Please make sure the `file.encoding` system property and the locale related env vars have sane (UTF-8ish) values on the slave.

Can you provide the specific characters which are in the problem file name? There are already automated tests in the code for various interesting characters, and it may be that we need to add more tests with the specific characters you have identified.

Also, can you confirm (as danielbeck noted) that the Java configuration of the slave running that process is using UTF-8 settings for its locale?

Mark:
Nothing specific in those filenames. I met this issue from time to time with different cyrillic filenames. For example лицо.png (face.png) or плавание.png (swim.png).

Daniel:
One build machine was configured to UTF-8 but another was not. I can not provoke bug now but if I did this I will comment this issue.

Thanks a lot for you help.

Code changed in jenkins
User: Mark Waite
Path:
src/test/java/org/jenkinsci/plugins/gitclient/GitAPITestCase.java
http://jenkins-ci.org/commit/git-client-plugin/f6900736f255f7cf99c772b1002fb42b87371905
Log:
Add test cyrillic file names from JENKINS-27910

This does not address the core java library refusal to delete files
named with unmappable characters. That needs a different solution, and
a solution which would be better done in Jenkins core than in the git
client plugin.

alexchernyy Any news about this? Did this occur again after you fixed the slave?

danielbeck It looks correct. There were no crashes after fix.

Config issue (though we could probably improve the docs), so resolving as not a defect.