Rollup of 5 pull requests#91596

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matthiaskrgr wants to merge 13 commits into

rust-lang:masterfrom

matthiaskrgr:rollup-za25un8

Commits on Oct 19, 2021

Update std::env::temp_dir to use GetTempPath2 on Windows when available.
talagrand
committed

Commits on Oct 27, 2021

Clarify platform availability of GetTempPath2
talagrand
committed

Commits on Dec 3, 2021

Remove a code path that is neither documented nor can I see the reason it existed.
oli-obk
committed
Tweak "call this function" suggestion to have smaller span
estebank
committed

Commits on Dec 4, 2021

Commits on Dec 5, 2021

doc: suggest try_reserve in try_reserve_exact
TennyZhuang
committed