regression 1.50: Code breaks due to newly stabalized std lib methods `Ord::clamp` and `bool::then`

[rylev]

Two newly stabalized APIs (Ord::clamp and bool::then) caused regressions in crates due to their stabalization in the latest crater run. In total 4 crates were impacted by this.

This is likely to be closed with wont-fix, but I wanted to ensure it was noted somewhere.

@rustbot modify labels: +regression-from-stable-to-beta

[apiraino]

Issue has been mentioned and noted in the latest crater run, so it will tracked there.

[scottmcm]

clamp is almost certainly wont-fix as being expected -- Ord::clamp was backed out back in 2017 for breakage, so it finally stabilizing now seems like acceptance of this (allowed) breakage.

[Mark-Simulacrum]

Closing as expected and acceptable breakage.