Lint does not warn if format specifier missing

I added a debug statement
Timber.v("perm % is a valid combination %s",possibleCom,validCom);
instead of
Timber.v("perm %s is a valid combination %s",possibleCom,validCom);

There was no warning or error. The above bug (missing s after %) causes weird behavior.
In my case the subsequent library call post the debug log never completed.

Start by tracing how Timber.v handles and validates format strings, using the two examples in the issue as the reproduction. Determine where a missing format specifier should be reported, then add regression coverage showing that the malformed call produces a warning or error while the corrected call remains valid.

Written by the indexing model from the issue text.