rustc suggests in non-user-defined external library #142403
Description
This issue is used to keep track of similar suggestion errors.
rustc often makes suggestions in non-user-defined external libraries that we can't apply because it's automatically downloaded by Cargo or exists in the standard library.
Related Issues: #142359, #139830, #139253, #139251, #139247, #139051, #139050, #139049
A preliminary solution: #139316, but there are some problems...