I tried to build from GIT bash on windows 10, and first test that failed was
testSynopsisOrderCorrectWhenParametersDeclaredOutOfOrder in org.apache.logging.log4j.core.tools.picocli. CommandLineHelpTest:2008 It seems like the expected result format("<main class> <param0> <param1>%n") on line 2014 always assumes that no ANSI color codes is output, while the actual results have ANSI codes. I looked into the code, and saw that one of the things that was check was if TERM environment variable started with xterm, and did a test where I first did export TERM=zzzzz and did then build it again. Now without faults. The test should have more control on what environment it is running on. It is several other tests in the same testclass that fails because of same issue. I guess this is the same fault that Gary Gregory experienced here https://www.mail-archive.com/dev@logging.apache.org/msg05223.html in message from Nov 19, 2017, at 6:32 PM Best regards Atle