Constant rustc_expand::errors::_DERIVE_rustc_errors_AddToDiagnostic_FOR_FeatureRemovedReason
source · const _DERIVE_rustc_errors_AddToDiagnostic_FOR_FeatureRemovedReason: ();const _DERIVE_rustc_errors_AddToDiagnostic_FOR_FeatureRemovedReason: ();