# Compile fail tests for Bevy macros This crate is not part of the Bevy workspace in order to not fail `crater` tests for Bevy. The tests assert on the exact compiler errors and can easily fail for new Rust versions due to updated compiler errors (e.g. changes in spans). The `CI` workflow executes these tests on the stable rust toolchain (see [tools/ci](../../../tools/ci/src/main.rs)). For information on writing tests see [compile_fail_utils/README.md](../../../tools/compile_fail_utils/README.md).