Auto merge of #114038 - Stargateur:108277, r=ChrisDenton

unix time module now return result

First try to fix #108277 without break anything.

if anyone who read this know tips to be able to check compilation for different target I could use some help. So far I installed many target with rustup but `./x check --all-targets` doesn't seem to use them.

TODO:

- [x] better error
- [ ] test, how ?

`@rustbot` label -S-waiting-on-author +S-waiting-on-review

Author: bors