The GIT_FSMONITOR_TEST variable allows you to roundtrip the fsmonitor codpath in the whole test suite. On both Debian & CentOS this breaks for me: (cd t && GIT_FSMONITOR_TEST=$PWD/t7519/fsmonitor-all ./t3404-rebase-interactive.sh -i) Whereas this works: (cd t && GIT_FSMONITOR_TEST=$PWD/t7519/fsmonitor-all GIT_SKIP_TESTS=t3404.6 ./t3404-rebase-interactive.sh -i) The entirety of the rest of the test suite still passes with GIT_FSMONITOR_TEST. This has been failing ever since GIT_FSMONITOR_TEST was introduced in 883e248b8a ("fsmonitor: teach git to optionally utilize a file system monitor to speed up detecting new or changed files.", 2017-09-22). Under -v -x -i: + echo test_must_fail: command succeeded: env FAKE_LINES=exec_echo_foo_>file1 1 git rebase -i HEAD^ test_must_fail: command succeeded: env FAKE_LINES=exec_echo_foo_>file1 1 git rebase -i HEAD^ + return 1 error: last command exited with $?=1 not ok 6 - rebase -i with the exec command checks tree cleanness # # git checkout master && # set_fake_editor && # test_must_fail env FAKE_LINES="exec_echo_foo_>file1 1" git rebase -i HEAD^ && Maybe once this is fixed running the test suite under GIT_FSMONITOR_TEST would be a useful Travis target, but I don't know the current status of adding new options to Travis.