rust/tests/ui/feature-gates/feature-gate-trace_macros.s...

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error[E0658]: use of unstable library feature 'trace_macros': `trace_macros` is not stable enough for use and is subject to change
--> $DIR/feature-gate-trace_macros.rs:2:5
|
LL | trace_macros!(true);
| ^^^^^^^^^^^^
|
= note: see issue #29598 <https://github.com/rust-lang/rust/issues/29598> for more information
= help: add `#![feature(trace_macros)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0658`.