Rollup of 6 pull requests#91413

Closed

matthiaskrgr wants to merge 16 commits intorust-lang:masterfrom

matthiaskrgr:rollup-xymm2y3

Commits on Sep 24, 2021

Disallow non-c-like but "fieldless" ADTs from being casted to integer...
nbdd0121
committed

Commits on Nov 16, 2021

Use get_diagnostic_name more
camsteffen
committed

Commits on Nov 23, 2021

Update CoverageMappingFormat Support to Version6

Swatinem
authored and
richkadel
committed

Commits on Nov 27, 2021

Improve error message for `E0659` if the source is not available
FabianWolff
committed

Commits on Nov 30, 2021

Commits on Dec 1, 2021