Static rustc_lint::builtin::SOFT_UNSTABLE
source · [−]pub static SOFT_UNSTABLE: &'static Lint
Expand description
The soft_unstable
lint detects unstable features that were
unintentionally allowed on stable.
Example
ⓘ
#[cfg(test)]
extern crate test;
#[bench]
fn name(b: &mut test::Bencher) {
b.iter(|| 123)
}
{{produces}}
Explanation
The bench
attribute was accidentally allowed to be specified on
the stable release channel. Turning this to a hard error would have
broken some projects. This lint allows those projects to continue to
build correctly when --cap-lints
is used, but otherwise signal an
error that #[bench]
should not be used on the stable channel. This
is a future-incompatible lint to transition this to a hard error in
the future. See issue #64266 for more details.