I have this occasional problem where cargo fmt and rustfmt just stop... doing anything. Like, I'll run cargo fmt against a branch that I know has formatting issues, and nothing will change. If I run cargo fmt -- --check, it returns 0. If I run rustfmt directly, same result. Any idea what could be wrong? These tools have worked correctly on this machine in the past.
$ rustfmt --version rustfmt 1.4.36-stable (7de6968 2021-02-07) $ cargo --version cargo 1.51.0 (43b129a20 2021-03-16)