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Pants

So, what I appear to be seeing is that the checkstyle tool is re-bootstrapped on every run:
```
21:37:47 00:58       [bootstrap-checkstyle]WARN] Scrubbing _JAVA_OPTIONS= -Djava.awt.headless=true -Duser.timezone=UTC

                   Caching artifacts for 1 target.
21:37:47 00:58       [bootstrap-jar-tool]WARN] Scrubbing _JAVA_OPTIONS= -Djava.awt.headless=true -Duser.timezone=UTC

                   Caching artifacts for 1 target.
21:37:48 00:59       [jar-tool]WARN] Scrubbing _JAVA_OPTIONS= -Djava.awt.headless=true -Duser.timezone=UTC

21:37:48 00:59       [bootstrap-jarjar]WARN] Scrubbing _JAVA_OPTIONS= -Djava.awt.headless=true -Duser.timezone=UTC

                   Caching artifacts for 1 target.
21:37:50 01:01       [shade-checkstyle]WARN] Scrubbing _JAVA_OPTIONS= -Djava.awt.headless=true -Duser.timezone=UTC

                   Caching artifacts for 1 target.
21:38:05 01:16       [checkstyle]WARN] Scrubbing _JAVA_OPTIONS= -Djava.awt.headless=true -Duser.timezone=UTC
```