Adam Dinwoodie writes: > To my surprise, the test fails if the worktree is under "/cygdrive", /cygdrive is normally mounted with "posix=0", which only affects case sensitivity, so that isn't the reason for this particular fail. You should anyway not build a Cygwin package with that option in effect, instead create your own mount point for that directory (with "binary,user" options). > +++ diff -u f1_mode.expected f1_mode.actual > --- f1_mode.expected 2020-12-19 16:50:20.169378700 +0000 > +++ f1_mode.actual 2020-12-19 16:50:20.249126000 +0000 > @@ -1 +1 @@ > --rw------- > +-rw-rw-r-- You seemingly can't change the ACL and/or several mode bits and see the effective access that your euid / egid has instead. It is possible to set up the (default) ACL in a way that removes the permission to change them while otherwise still giving you what is effectively full access, in which case the test fail is the result of an inability to remove the default ACL from the directory. I suspect your build directory is owned by a different user than the one you're building with and/or has been moved or re-used from another Windows installation that has different SID. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Factory and User Sound Singles for Waldorf Blofeld: http://Synth.Stromeko.net/Downloads.html#WaldorfSounds