[lenkite]

This issue is caught and flagged by clang-tidy. Though technically the standard says it is in valid but un-specified state. Because of short string optimisation, the move might be possibly a copy, so one should not rely on the contents being empty.

[deschutes]

Clang tidy covers only the most trivial use after move scenarios. It's useful coverage but isn't and never will be complete like the rust borrow checker.