third_party_rust_bitflags/CONTRIBUTING.md

Updating compile-fail test outputs

bitflags uses the trybuild crate to integration test its macros. Since Rust error messages change frequently enough that nightly builds produce spurious failures, we only check the compiler output in beta builds. If you run:

TRYBUILD=overwrite cargo +beta test --all

it will run the tests and update the trybuild output files.