t5400 failure on Windows

From: Johannes Sixt <j6t@kdbg.org>
Date: May 15, 2017, 20:05 UTC
Message-ID: <50f6d8b7-383b-7673-22ad-9a9b80bec2d1@kdbg.org>

I observe the following failure on Windws with origin/next, in t5400-send-pack.sh

+++ diff -u expect refs --- expect Mon May 15 06:54:59 2017 +++ refs Mon May 15 06:54:59 2017

@@ -1,4 +1,3 @@
 5285e1710002a06a379056b0d21357a999f3c642 refs/heads/master
-5285e1710002a06a379056b0d21357a999f3c642 refs/remotes/origin/HEAD
 5285e1710002a06a379056b0d21357a999f3c642 refs/remotes/origin/master
 53d9066ca10f2e103b33caf3a16a723553c33b00 .have
error: last command exited with $?=1
not ok 16 - receive-pack de-dupes .have lines


The trace file looks like this:

-------- trace --------
packet: receive-pack> 5285e1710002a06a379056b0d21357a999f3c642 refs/heads/master\0report-status delete-refs side-band-64k quiet atomic ofs-delta agent=git/2.13.0.497.g5af12421b0
packet: receive-pack> 5285e1710002a06a379056b0d21357a999f3c642 refs/remotes/origin/HEAD
packet:         push< 5285e1710002a06a379056b0d21357a999f3c642 refs/heads/master\0report-status delete-refs side-band-64k quiet atomic ofs-delta agent=git/2.13.0.497.g5af12421b0
packet: receive-pack> 5285e1710002a06a379056b0d21357a999f3c642 refs/remotes/origin/master
packet:         push< 5285e1710002a06a379056b0d21357a999f3c642 refs/remotes/origin/master
packet: receive-pack> 53d9066ca10f2e103b33caf3a16a723553c33b00 .have
packet:         push< 53d9066ca10f2e103b33caf3a16a723553c33b00 .have
packet: receive-pack> 0000
packet:         push< 0000
packet:         push> 0000000000000000000000000000000000000000 b1a1c97e94b6388c108e195d28a3e89f00c81698 refs/heads/foo\0 report-status agent=git/2.13.0.497.g5af12421b0
packet:         push> 0000
packet: receive-pack< 0000000000000000000000000000000000000000 b1a1c97e94b6388c108e195d28a3e89f00c81698 refs/heads/foo\0 report-status agent=git/2.13.0.497.g5af12421b0
packet: receive-pack< 0000
packet: receive-pack> unpack ok
packet: receive-pack> ok refs/heads/foo
packet: receive-pack> 0000
packet:         push< unpack ok
packet:         push< ok refs/heads/foo
packet:         push< 0000
-------- end of trace --------

Where should I start looking? On a Linux box, the test case does
produce an additional line

packet:         push< 5285e1710002a06a379056b0d21357a999f3c642 refs/remotes/origin/HEAD

in the trace file. I also do not see that any tests would be skipped
on Windows. (But I forgot to check whether refs/remotes/origin/HEAD
is present in any of the repositories.)

-- Hannes