fix(deps): update rust crate wasmtime to v42

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
wasmtime	dependencies	major	40.0.0 → 42.0.0

---

Release Notes

bytecodealliance/wasmtime (wasmtime)

v42.0.1

Compare Source

42.0.1

Released 2026-02-25.

Fixed

• Fix some minor bindgen! issues with anyhow: true
  #​12658

v42.0.0

Compare Source

42.0.0

Released 2026-02-20.

Added

• Cranelift now supports bitwise operations on floats on aarch64.
  #​12326

• Cranelift now supports NaN canonicalization of f16 and f128.
  #​12337

• Wasmtime has gained minimal support to implement fixed-length lists in the
  component model being communicated between composed components.
  #​10619

• Wasmtime's Error and Result types are now built-in to the wasmtime crate
  and are no longer defined by the anyhow crate. Wasmtime exports a
  mostly-compatible anyhow-like API at wasmtime::error which is used
  instead. Wasmtime's own Error handles OOM internally and is foundational
  part of Wasmtime's work-in-progress support to gracefully handle OOM.
  #​12309

• Wasmtime now exports an extension trait to convert anyhow::Result<T> into
  wasmtime::Result<T>.
  #​12255

• Wasmtime supports a new bindgen! option to generate bindings specifically
  with anyhow::Result instead of wasmtime::Result.
  #​12331

• The Nvidia-Cuda execution provider is now supported for the wasi-nn onnx
  backend.
  #​12044

• Non-exported and private entities can now be accessed through the debugger
  API.
  #​12367

• A new Store::try_new API has been added which handles OOM.
  #​12415

• Initial configuration knobs for record-and-replay support have been added.
  #​12375

• Cranelift's s390x backend now has support for instructions added in z17.
  #​12319

• Wasmtime's implementation of fibers can now be compiled on riscv32imac
  platforms.
  #​12506

• Wasmtime's implementation of WASI now correctly limits resource consumption on
  behalf of the guest, such as host-allocated memory, by default. This means
  that some behaviors previously allowed by Wasmtime are now disallowed by
  default if they rely on transferring a large amount of data from the guest to
  the host. Additionally calls to wasi:random/random.get-random-bytes, for
  example, now have limits in place by default to avoid allocating too much
  memory on the host. For more information on this see the related security
  advisory with further details on knobs added and what behaviors are now
  restricted by default.
  GHSA-852m-cvvp-9p4w

Changed

• Reentrance rules for WebAssembly components have changed in accordance with
  upstream specification changes. Embeddings are not expected to be affected,
  but please reach out if you find problems.
  #​12349

• Wasmtime's Config::async_support option is now removed and no longer
  necessary. Embeddings can likely just remove turning this on and everything
  should keep working like normal.
  #​12371

• Wasmtime now supports Config::concurrency_support as a knob to enable or
  disable *_concurrent APIs at runtime when the component-model-async crate
  feature is enabled.
  #​12416

• The post_return-style functions in Wasmtime's API are now noops and will be
  removed in the future.
  #​12498

• Translation of global.get of a defined, immutable global is now turned into
  a CLIF constant.
  #​12234

• The wasmtime-wasi-nn crate's dependency on ort has been updated.
  #​12162

• Error bounds requiring using hyper::Error in wasmtime-wasi-http have been
  relaxed to taking E: Into<ErrorCode> instead.
  #​12227

• The cranelift-assembler-x64, and cranelift-isle crates now supports
  no_std targets. The cranelift-codegen crate now mostly supports no_std,
  but not entirely.
  #​12222
  #​12235
  #​12236

• Android release binaries are now compiled with a larger page size configured.
  #​12246

• Implicit binds are now allowed for WASIp3 sockets.
  #​12225

• Wasmtime's implementation of component-model-async now correctly checks for
  whether tasks are allowed to block in all guest-to-guest situations.
  #​12282

• The wasmtime-wasi-tls crate now has an OpenSSL backend.
  #​12228

• Wasmtime's OutOfMemory error now keeps track of the attempted allocation
  size that failed.
  #​12351

• Wasmtime's *_unchecked functions now work with MaybeUninit<ValRaw> instead
  of ValRaw directly.
  #​12366

• Wasmtime now requires Rust 1.91.0 to compile.
  #​12392

• Wasmtime's management of component-model-async tasks is now consistently done
  in all boundaries between guest/host tasks.
  #​12379

Fixed

• The HeapType::matches implementation for NoExn has been fixed.
  #​12350

• Enum discriminant validation for composed components has been fixed.
  #​12356

• Shifts in some situations on aarch64 with Winch have been fixed.
  #​12501

• Debug value locations around cold blocks have been improved.
  #​12484

• Panics when adding too many headers to a wasi:http/types.fields has been
  resolved
  GHSA-243v-98vx-264h

v41.0.4

Compare Source

41.0.4

Released 2026-02-24.

Changed

• Wasmtime's implementation of WASI now has the ability to limit resource
  consumption on behalf of the guest, such as host-allocated memory. This means
  that some behaviors previously allowed by Wasmtime can now disallowed, such as
  transferring excessive data from the guest to the host. Additionally calls to
  wasi:random/random.get-random-bytes, for example, can have limits in place
  to avoid allocating too much memory on the host. To preserve
  backwards-compatible behavior these limits are NOT set by default. Embedders
  must opt-in to configuring these knobs as appropriate for their embeddings.
  For more information on this see the related security advisory with further
  details on knobs added and what behaviors can be restricted.
  GHSA-852m-cvvp-9p4w

Fixed

• Panics when adding too many headers to a wasi:http/types.fields has been
  resolved
  GHSA-243v-98vx-264h

• Panic when dropping a [Typed]Func::call_async future.
  GHSA-xjhv-v822-pf94

v41.0.3

Compare Source

41.0.3

Released 2026-02-04.

Fixed

• Fix an incorrect mid-end optimization rule that could cause a compiler panic
  due to mismatched types.
  #​12504

v41.0.2

Compare Source

41.0.2

Released 2026-02-03.

Fixed

• Reduce the dependencies of the wasmtime-internal-jit-icache-coherence crate.
  #​12446

v41.0.1

Compare Source

41.0.1

Released 2026-01-26.

Fixed

• Fixed a bug in lowering of f64.copysign on x86-64 whereby when combined
  with an f64.load, the resulting machine code could read 16 bytes rather
  than 8 bytes. This could result in a segfault when Wasmtime is configured
  without signals-based traps.

v41.0.0

Compare Source

41.0.0

Released 2026-01-20.

Added

• Support for {Future,Stream}Any in the component model has improved.
  #​12142

• Wasmtime has initial support for breakpoints and single-stepping with the
  debug feature for guest programs.
  #​12133

• Wasmtime has begun adding a new Error type which is similar to
  anyhow::Error but supports gracefully handling OOM. Wasmtime still uses
  anyhow::Error but this will change in the future to wasmtime::Error which
  will be a distinct type.
  #​12163

• An initial top-level crate for async-debugging guest programs has been added.
  #​12183

Changed

• Cranelift now optimizes redundant select + icmp instructions.
  #​12135

• Synchronous component model functions can no longer block before returning.
  This implements a change in the upstream specification to the upcoming async
  support in the component model which places stricter restrictions on
  non-async functions and their ability to perform blocking operations.
  #​12043

• Frame iteration in debug mode now visits all activations which enables
  seeing all frames from recursive wasm calls.
  #​12176

• Wasmtime now requires Rust 1.90.0 or later.
  #​12167

• Intra-component stream/future reads/writes are now allowed for simple data
  types.
  #​12181

• The POLL callback code has been removed from the canonical ABI for async
  functions and the waitable-set.poll function no longer yields.
  #​12182

• Guest-to-guest adapters injected by Wasmtime now have improved trapping error
  messages.
  #​12215

Fixed

• #[derive(Lift)] for enums with exactly 256 cases has been fixed.
  #​12140

• With component-model-async support recursively calling a guest from a host
  function has now been fixed.
  #​12152

v40.0.4

Compare Source

40.0.4

Released 2026-02-24.

Changed

• Wasmtime's implementation of WASI now has the ability to limit resource
  consumption on behalf of the guest, such as host-allocated memory. This means
  that some behaviors previously allowed by Wasmtime can now disallowed, such as
  transferring excessive data from the guest to the host. Additionally calls to
  wasi:random/random.get-random-bytes, for example, can have limits in place
  to avoid allocating too much memory on the host. To preserve
  backwards-compatible behavior these limits are NOT set by default. Embedders
  must opt-in to configuring these knobs as appropriate for their embeddings.
  For more information on this see the related security advisory with further
  details on knobs added and what behaviors can be restricted.
  GHSA-852m-cvvp-9p4w

Fixed

• Panics when adding too many headers to a wasi:http/types.fields has been
  resolved
  GHSA-243v-98vx-264h

• Panic when dropping a [Typed]Func::call_async future.
  GHSA-xjhv-v822-pf94

v40.0.3

Compare Source

40.0.3

Released 2026-01-26.

Fixed

• Fixed a bug in lowering of f64.copysign on x86-64 whereby when combined
  with an f64.load, the resulting machine code could read 16 bytes rather
  than 8 bytes. This could result in a segfault when Wasmtime is configured
  without signals-based traps.

v40.0.2

Compare Source

40.0.2

Released 2026-01-14.

Fixed

• A possible stack overflow in the x64 backend with cmp emission has been
  fixed.
  #​12333

• Some ISLE optimization rules which created erroneous IR for vector inputs have
  been fixed.
  #​12179
  #​12335

• The x64 lowering of shld has been fixed for some edge caxes.
  #​12321

v40.0.1

Compare Source

40.0.1

Released 2026-01-07.

Changed

• This release is a test of Wasmtime's CI-based crate publishing infrastructure.
  Wasmtime is switching to crates.io-based trusted publishing for this release
  and is testing that everything works.
  #​12257

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