The jslint jobs are being run under /srv/ssd/jenkins-slave/workspace . On the gallium host /srv is also a checkout of integration/docroot.git which contains .jshint and .jsignore
The result is that whenever a repo does not provide .js* files, it ends up reusing the one from the CI docroot.
The workaround is to provide a nill .jshintrc like have been done on labs/tools/grrrit https://gerrit.wikimedia.org/r/#/c/77309/
Version: wmf-deployment
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=47260