tests: add a critical flush() to run-tests.py to make output stable on py3
Differential Revision: https://phab.mercurial-scm.org/D5204
--- a/tests/run-tests.py Sat Oct 13 07:49:20 2018 -0700
+++ b/tests/run-tests.py Thu Nov 01 15:47:26 2018 -0400
@@ -482,6 +482,7 @@
parser.error('--with-hg must specify an executable hg script')
if os.path.basename(options.with_hg) not in [b'hg', b'hg.exe']:
sys.stderr.write('warning: --with-hg should specify an hg script\n')
+ sys.stderr.flush()
if options.local:
testdir = os.path.dirname(_bytespath(canonpath(sys.argv[0])))
reporootdir = os.path.dirname(testdir)