https://github.com/rust-lang/rust-analyzer/blob/1e6cef94dfbc359e7b1e7d392de387c2c539b965/crates/mbe/src/expander/matcher.rs#L184 The transformation here is is not valid so the diagnostic shouldnt' trigger <!-- TRIAGEBOT_START --> <!-- TRIAGEBOT_ASSIGN_START --> <!-- TRIAGEBOT_ASSIGN_DATA_START$${"user":"davidsemakula"}$$TRIAGEBOT_ASSIGN_DATA_END --> <!-- TRIAGEBOT_ASSIGN_END --> <!-- TRIAGEBOT_END -->