Rollup of 7 pull requests#100879

Closed

Dylan-DPC wants to merge 19 commits intorust-lang:masterfrom

Dylan-DPC:rollup-q1orvo6

Commits on Jun 17, 2022

expand inner `or` pattern
ouz-a
committed

Commits on Jun 24, 2022

use true recursion
ouz-a
committed

Commits on Aug 9, 2022

Guarantee `try_reserve` preserves the contents on error
lo48576
committed

Commits on Aug 12, 2022

make some const prop tests unit-test
Noratrieb
committed

Commits on Aug 17, 2022

add new test and combine old ones
ouz-a
committed

Commits on Aug 21, 2022

Commits on Aug 22, 2022