I have `arc lint` configured with rubocop:
```
$ arc linters
[snip]
AVAILABLE ruby (Ruby)
CONFIGURED rubocop (Ruby static code analyzer)
AVAILABLE script-and-regex (Script and Regex)
[snip]
(Run `arc linters --verbose` for more details.)
```
I tried running with `--amend-all` and got some suggestions that I think //should// be auto-fixable. For example:
```
$ arc lint --amend-all file.rb
>>> Lint for file.rb:
Warning (Style/StringLiterals) RuboCop
Prefer single-quoted strings when you don't need string interpolation or
special symbols.
[snip]
>>> 4 describe "invitation" do
[snip]
```
But no changes are applied. The repo is under git source control.
How can I make `arc lint` apply a patch?