this is funny though! apparently tidy parsed `.gitignore`, but did not recognize unignore lines (`!...`), so tidy was ignoring `rustc_mir_build` this whole time (at least for some lints?).
this is funny though! apparently tidy parsed `.gitignore`, but did not recognize unignore lines (`!...`), so tidy was ignoring `rustc_mir_build` this whole time (at least for some lints?).