Rollup of 10 pull requests#89572

Merged

bors merged 26 commits intorust-lang:masterfrom

Manishearth:rollup-obz5ycp

Oct 6, 2021

Commits on Sep 6, 2021

Normalize assoc types when checking ret ty of main
ThePuzzlemaker
committed

Commits on Sep 7, 2021

Clean up the fix a bit
ThePuzzlemaker
committed

Commits on Sep 10, 2021

Use `libc::sigaction()` instead of `sys::signal()` to prevent a deadlock
FabianWolff
committed

Commits on Sep 12, 2021

Fix suggestion for nested struct patterns
FabianWolff
committed

Commits on Sep 29, 2021

Clean up unneeded explicit pointer cast
dtolnay
committed

Commits on Oct 1, 2021

Call `libc::sigaction()` only on Android
FabianWolff
committed

Commits on Oct 3, 2021

Fix Lower/UpperExp formatting for integers and precision zero
FabianWolff
committed

Commits on Oct 4, 2021

Commits on Oct 5, 2021