Implement a lint to warn about unused macro rules#96150

Merged

bors merged 6 commits intorust-lang:masterfrom est31:unused_macro_rules

May 12, 2022

+400-78

Commits on May 4, 2022

Add unused_macro_rules lint definition
est31
committed

Commits on May 10, 2022

Also allow unused macro rules in stdarch
est31
committed