test: make compatible with the latest rustc

Author: loyd

Cargo.toml

@@ -56,7 +56,7 @@ anyhow = { version = "1.0.38", default-features = false }
 colored = "2.0.0"
 criterion = "0.3.3"
 derive_more = "0.99.9"
-trybuild = "1.0.39"
+trybuild = "1.0.85"
 serde_json = "1"
 proptest = "1.0.0"
 rust_decimal = "1.22.0"

tests/const_fn/01_fixnum_const_bad_str_with_too_long_fractional_part.stderr

@@ -1,20 +1,18 @@
-error[E0080]: evaluation of constant value failed
-   --> src/const_fn.rs
-    |
-    |     const_assert!(exp <= coef);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ exceeded interpreter step limit (see `#[const_eval_limit]`)
-    |
-note: inside `fixnum::_priv::parse_fixed`
-   --> src/const_fn.rs
-    |
-    |     const_assert!(exp <= coef);
-    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
-note: inside `VALUE_INNER`
-   --> tests/const_fn/01_fixnum_const_bad_str_with_too_long_fractional_part.rs:7:36
-    |
-7   | const VALUE: FixedPoint<i64, U9> = fixnum_const!(0.1234567891, 9);
-    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-    = note: this error originates in the macro `const_assert` which comes from the expansion of the macro `fixnum_const` (in Nightly builds, run with -Z macro-backtrace for more info)
+error: constant evaluation is taking a long time
+ --> src/const_fn.rs
+  |
+  |     const_assert!(exp <= coef);
+  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+  |
+  = note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval.
+          If your compilation actually takes a long time, you can safely allow the lint.
+help: the constant being evaluated
+ --> tests/const_fn/01_fixnum_const_bad_str_with_too_long_fractional_part.rs:7:36
+  |
+7 | const VALUE: FixedPoint<i64, U9> = fixnum_const!(0.1234567891, 9);
+  |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  = note: `#[deny(long_running_const_eval)]` on by default
+  = note: this error originates in the macro `const_assert` which comes from the expansion of the macro `fixnum_const` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 note: erroneous constant used
  --> tests/const_fn/01_fixnum_const_bad_str_with_too_long_fractional_part.rs:7:36