Rollup of 6 pull requests#91414

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matthiaskrgr wants to merge 14 commits intorust-lang:masterfrom

matthiaskrgr:rollup-tc59aqv

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 25, 2021

When recovering from a `:` in a pattern, use adequate AST pattern
estebank
committed

Commits on Nov 27, 2021

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

Commits on Nov 29, 2021

review comments: clean up
estebank
committed

Commits on Nov 30, 2021

Commits on Dec 1, 2021