Rollup of 4 pull requests#84600

Merged

bors merged 11 commits intorust-lang:masterfrom

m-ou-se:rollup-mf5m2z8

Apr 26, 2021

Commits on Apr 12, 2021

Pretend Duration::MAX was part of duration_saturating_ops
workingjubilee
committed

Commits on Apr 24, 2021

Commits on Apr 25, 2021

Unify the docs of std::env::{args_os, args} more
r00ster
authored
Change wording
r00ster
authored
Update to reflect feedback on the constraints
workingjubilee
committed