bevel_regression.blend in svn's test repository has not been updated for a long time, looks like in quiet a few cases (40) results are now different that what was expected, so guess it needs to be updated. ;)
I can't reproduce this. I've been updating bevel_regression.blend pretty regularly (last time Feb 11) and it passes for me.
This is what I do on MacOs:
(with Debug build)
build with lastest master
test with latest svn revision of tests
in the build directory run:
ctest -C Debug -R bevel
and it runs that bevel test and shows it passing.
Similarly if I "make test" on Linux.
Did you do something different? Any console output that you can show me? Another thing to try, doing it manually, is load the bevel_regression.blend file, go to the Text Editor, and change the runtests assignment to False, and then run the script. This will put more verbose info on the console.