Rollup of 12 pull requests#89158

Merged

bors merged 26 commits intorust-lang:masterfrom

the8472:rollup-3e4ijth

Sep 22, 2021

Commits on Sep 10, 2021

Improve diagnostics if a character literal contains combining marks
FabianWolff
committed

Commits on Sep 17, 2021

Stabilize `Iterator::map_while`
WaffleLapkin
committed

Commits on Sep 18, 2021

Commits on Sep 19, 2021

[bootstrap] Improve the error message when `ninja` is not found to link to installation instructions.
daira
committed
Restore the suggestion to set `ninja = false`.
daira
authored

Commits on Sep 21, 2021