rustc-perf

bed5b940 - Bump libc from 0.2.66 to 0.2.67

Bump libc from 0.2.66 to 0.2.67 Bumps [libc](https://github.com/rust-lang/libc) from 0.2.66 to 0.2.67. - [Release notes](https://github.com/rust-lang/libc/releases) - [Commits](https://github.com/rust-lang/libc/compare/0.2.66...0.2.67) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>