Index: b/test/formats/test_id3.py
===================================================================
--- a/test/formats/test_id3.py
+++ b/test/formats/test_id3.py
@@ -266,5 +266,5 @@
         def test_rename_txxx_tags(self):
             file_path = os.path.join('test', 'data', 'test-id3-rename-tags.mp3')
-            filename = self.copy_file_tmp(file_path, 'mp3')
+            filename = self.copy_file_tmp(file_path, '.mp3')
             raw_metadata = load_raw(filename)
             self.assertIn('TXXX:Artists', raw_metadata)
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<div class='path'>path: <a href='/guix/log/?id=cce229546c924d25b91ad84769982a8ef1a1e0f4'>root</a>/<a href='/guix/log/tests?id=cce229546c924d25b91ad84769982a8ef1a1e0f4'>tests</a>/<a href='/guix/log/tests/services?id=cce229546c924d25b91ad84769982a8ef1a1e0f4'>services</a>/<a href='/guix/log/tests/services/linux.scm?id=cce229546c924d25b91ad84769982a8ef1a1e0f4'>linux.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/services/linux.scm?id=cce229546c924d25b91ad84769982a8ef1a1e0f4&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-08-02 15:54:37 +0300'>2020-08-02</span></td><td><a href='/guix/commit/tests/services/linux.scm?id=587e0d911dfff81647015e89847084b606e68f71'>services: Add zram-device-service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/linux.scm (&lt;zram-device-configuration&gt;): New record.
(zram-device-service-type): New variable.
* doc/guix.texi (Linux Services): Document it.
* tests/services/linux.scm (zram-swap-device-test): New tests.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-01-31 23:37:13 -0500'>2020-01-31</span></td><td><a href='/guix/commit/tests/services/linux.scm?id=d3e439e355284f136ff13eb3e6fffb4661552f3b'>gnu: Add earlyoom-service-type.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/linux.scm: New file.
* tests/services/linux.scm: Add test.
* Makefile.am (SCM_TESTS): Register test.
* doc/guix.texi (Linux Services): Add a new section and document the new
service and its configuration.
</span></span></td><td>Maxim Cournoyer</td></tr>