[WIP] MIR move elimination pass

[Amanieu]

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This is very much a work in progress, and will sometimes generate broken/unsound MIR.

[Amanieu]

@bors try @rust-timer queue

[rust-bors]

💔 Test for 884fdb2 failed: CI. Failed job:

• try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

[Amanieu]

@bors try

[rust-bors]

💔 Test for b42852b failed: CI. Failed job:

• try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

[Amanieu]

@bors try

[rust-bors]

💔 Test for 8165e10 failed: CI. Failed job:

• try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

[Amanieu]

@bors try

[rust-bors]

☀️ Try build successful (CI)
Build commit: 995f4a4 (995f4a47e156613c9fe05379fcda5d85d80a4916, parent: 4feb7221f4d445120a5061b16ce7222adbfdf6f6)

[rust-timer]

Finished benchmarking commit (995f4a4): comparison URL.

Overall result: ❌✅ regressions and improvements - please read:

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

Next, please: If you can, justify the regressions found in this try perf run in writing along with @rustbot label: +perf-regression-triaged. If not, fix the regressions and do another perf run. Neutral or positive results will clear the label automatically.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	2.7%	[0.2%, 29.0%]	41
Regressions ❌ (secondary)	12.0%	[0.0%, 769.2%]	74
Improvements ✅ (primary)	-1.2%	[-6.7%, -0.2%]	119
Improvements ✅ (secondary)	-1.3%	[-11.7%, -0.2%]	127
All ❌✅ (primary)	-0.2%	[-6.7%, 29.0%]	160

Max RSS (memory usage)

Results (primary 1.7%, secondary -0.7%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	4.2%	[1.1%, 10.1%]	10
Regressions ❌ (secondary)	0.8%	[0.7%, 0.9%]	2
Improvements ✅ (primary)	-3.3%	[-5.9%, -0.5%]	5
Improvements ✅ (secondary)	-1.3%	[-2.5%, -0.5%]	5
All ❌✅ (primary)	1.7%	[-5.9%, 10.1%]	15

Cycles

Results (primary 0.9%, secondary 2.3%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	50.5%	[2.1%, 102.6%]	4
Regressions ❌ (secondary)	29.2%	[0.8%, 291.5%]	12
Improvements ✅ (primary)	-3.0%	[-5.8%, -1.6%]	51
Improvements ✅ (secondary)	-5.0%	[-18.2%, -0.8%]	44
All ❌✅ (primary)	0.9%	[-5.8%, 102.6%]	55

Binary size

Results (primary 0.6%, secondary 1.5%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	1.7%	[0.1%, 8.2%]	78
Regressions ❌ (secondary)	2.4%	[0.1%, 8.2%]	82
Improvements ✅ (primary)	-0.9%	[-2.8%, -0.1%]	61
Improvements ✅ (secondary)	-1.3%	[-7.2%, -0.1%]	27
All ❌✅ (primary)	0.6%	[-2.8%, 8.2%]	139

Bootstrap: 495.518s -> 485.421s (-2.04%)
Artifact size: 394.42 MiB -> 392.60 MiB (-0.46%)

[Amanieu]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[Amanieu]

@bors try cancel

[rust-bors]

Try build cancelled. Cancelled workflows:

• https://github.com/rust-lang/rust/actions/runs/25464006088

[Amanieu]

@bors try

[rust-bors]

💔 Test for b6075f4 failed: CI. Failed job:

• try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

[Amanieu]

@bors try

[rust-bors]

⌛ Trying commit 5e02732 with merge b212d8c…

To cancel the try build, run the command @bors try cancel.

Workflow: https://github.com/rust-lang/rust/actions/runs/25471004465

[rust-log-analyzer]

The job aarch64-gnu-llvm-21-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

Executing "/scripts/stage_2_test_set1.sh"
+ /scripts/stage_2_test_set1.sh
PR_CI_JOB set; skipping tidy
+ '[' 1 == 1 ']'
+ echo 'PR_CI_JOB set; skipping tidy'
+ SKIP_TIDY='--skip tidy'
+ ../x.py --stage 2 test --skip tidy --skip compiler --skip src
##[group]Building bootstrap
    Finished `dev` profile [unoptimized] target(s) in 0.04s
##[endgroup]
downloading https://static.rust-lang.org/dist/2026-04-14/rustfmt-nightly-aarch64-unknown-linux-gnu.tar.xz
---
---- [ui] tests/ui/drop/drop_order.rs#edition2024 stdout ----

error in revision `edition2024`: test compilation failed although it shouldn't!
status: exit status: 101
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/drop/drop_order.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--cfg" "edition2024" "--check-cfg" "cfg(test,FALSE,edition2021,edition2024)" "-O" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "-o" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/drop/drop_order.edition2024/a" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2024" "-Z" "validate-mir" "-Z" "lint-mir"
stdout: none
--- stderr -------------------------------
note: no errors encountered even though delayed bugs were created

note: those delayed bugs will now be shown as internal compiler errors

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass MoveElimination) at bb30[0]:
                                use of local _7, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass MoveElimination) at bb28[0]:
                                use of local _14, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass MoveElimination) at bb26[0]:
                                use of local _21, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass MoveElimination) at bb24[0]:
                                use of local _28, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass MoveElimination) at bb22[0]:
                                use of local _35, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass SimplifyLocals-final) at bb30[0]:
                                use of local _6, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass SimplifyLocals-final) at bb28[0]:
                                use of local _12, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass SimplifyLocals-final) at bb26[0]:
                                use of local _18, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass SimplifyLocals-final) at bb24[0]:
                                use of local _24, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:23 ~ drop_order[ca1a]::main)) (after pass SimplifyLocals-final) at bb22[0]:
                                use of local _30, which has no storage here
  --> /checkout/tests/ui/drop/drop_order.rs:252:1
---
note: please make sure that you have updated to the latest nightly

note: rustc 1.97.0-nightly (646f5b8d8 2026-05-07) running on aarch64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -Z simulate-remapped-rust-src-base=/rustc/FAKE_PREFIX -Z translate-remapped-path-to-local-path=no -Z ignore-directory-in-diagnostics-source-blocks=/cargo -Z ignore-directory-in-diagnostics-source-blocks=/checkout/vendor -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -Z write-long-types-to-disk=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0 -Z validate-mir -Z lint-mir

query stack during panic:
end of query stack
------------------------------------------

---- [ui] tests/ui/drop/drop_order.rs#edition2024 stdout end ----
---- [ui] tests/ui/drop/drop_order_if_let_rescope.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 101
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/drop/drop_order_if_let_rescope.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "-O" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "-o" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/drop/drop_order_if_let_rescope/a" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2024" "-Z" "validate-mir" "-Z" "lint-mir"
stdout: none
--- stderr -------------------------------
note: no errors encountered even though delayed bugs were created

note: those delayed bugs will now be shown as internal compiler errors

error: internal compiler error: broken MIR in Item(DefId(0:18 ~ drop_order_if_let_rescope[b603]::main)) (after pass MoveElimination) at bb10[0]:
                                use of local _7, which has no storage here
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:18 ~ drop_order_if_let_rescope[b603]::main)) (after pass SimplifyLocals-final) at bb10[0]:
                                use of local _6, which has no storage here
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:18 ~ drop_order_if_let_rescope[b603]::main)) (after pass AddCallGuards) at bb10[0]:
                                use of local _6, which has no storage here
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:18 ~ drop_order_if_let_rescope[b603]::main)) (after pass PreCodegen) at bb10[0]:
                                use of local _6, which has no storage here
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^

error: internal compiler error: broken MIR in Item(DefId(0:18 ~ drop_order_if_let_rescope[b603]::main)) (after phase change to runtime-optimized) at bb10[0]:
                                use of local _6, which has no storage here
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
   |
LL | }
   | ^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:80:22
         0: <std::backtrace::Backtrace>::create
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         3: <rustc_errors::diagnostic::Diag>::emit_producing_error_guaranteed
         4: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         5: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         6: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_local
         7: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_place
         8: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_terminator
         9: rustc_mir_transform::lint::lint_body
        10: rustc_mir_transform::pass_manager::run_passes_inner
        11: rustc_mir_transform::run_optimization_passes
        12: rustc_mir_transform::optimized_mir
        13: rustc_query_impl::query_impl::optimized_mir::invoke_provider_fn::__rust_begin_short_backtrace
        14: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 8]>>
        15: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefIdCache<rustc_middle::query::erase::ErasedData<[u8; 8]>>, false>
        16: rustc_query_impl::query_impl::optimized_mir::execute_query_non_incr::__rust_end_short_backtrace
        17: <rustc_middle::ty::context::TyCtxt>::instance_mir
        18: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures::sync::parallel::par_for_each_in<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>::{closure#0}::{closure#1}::{closure#0}>>
        19: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_interface::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
        20: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#1}>
        21: rustc_interface::passes::analysis
        22: rustc_query_impl::query_impl::analysis::invoke_provider_fn::__rust_begin_short_backtrace
        23: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_impl::execution::execute_job_non_incr<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>::{closure#0}, rustc_middle::query::erase::ErasedData<[u8; 0]>>
        24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
        25: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
        26: std::panicking::catch_unwind::<core::option::Option<rustc_interface::queries::Linker>, core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>>
        27: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
        28: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}>
        29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
        30: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}::{closure#0}>>
        31: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        32: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
        33: rustc_span::create_session_globals_then::<(), rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}>
        34: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        35: std::panicking::catch_unwind::<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1}::{closure#0}>>
        36: <std::thread::lifecycle::spawn_unchecked<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        37: <std::sys::thread::unix::Thread>::new::thread_start
        38: <unknown>
        39: <unknown>
      
  --> /checkout/tests/ui/drop/drop_order_if_let_rescope.rs:119:1
---
note: please make sure that you have updated to the latest nightly

note: rustc 1.97.0-nightly (646f5b8d8 2026-05-07) running on aarch64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -Z simulate-remapped-rust-src-base=/rustc/FAKE_PREFIX -Z translate-remapped-path-to-local-path=no -Z ignore-directory-in-diagnostics-source-blocks=/cargo -Z ignore-directory-in-diagnostics-source-blocks=/checkout/vendor -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -Z write-long-types-to-disk=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0 -Z validate-mir -Z lint-mir

query stack during panic:
end of query stack
------------------------------------------