rust: run `cargo clippy`
These automatic fixes are good to have because they make the code
more idiomatic and less surprising.
The transform from `sort` -> `sort_unstable` is questionable, but this is
only in a test, so it doesn't matter in our case.
$ hg init repo
$ cd repo
$ echo a > a
$ hg ci -Ama
adding a
$ hg an a
0: a
$ hg --config ui.strict=False an a
0: a
$ echo "[ui]" >> $HGRCPATH
$ echo "strict=True" >> $HGRCPATH
$ hg an a
hg: unknown command 'an'
(use 'hg help' for a list of commands)
[10]
$ hg annotate a
0: a
should succeed - up is an alias, not an abbreviation
$ hg up
0 files updated, 0 files merged, 0 files removed, 0 files unresolved