The bamboo pegasus-s3 tests fail with this error:

09-Dec-2015 21:19:00 Test command: pegasus-transfer -f s3-step2.in
09-Dec-2015 21:19:00
09-Dec-2015 21:19:00 2015-12-09 21:19:00,654 INFO: Reading transfer specification from s3-step2.in
09-Dec-2015 21:19:00 2015-12-09 21:19:00,671 INFO: 3 transfers loaded
09-Dec-2015 21:19:00 2015-12-09 21:19:00,722 INFO: --------------------------------------------------------------------------------
09-Dec-2015 21:19:00 2015-12-09 21:19:00,722 INFO: Starting transfers - attempt 1
09-Dec-2015 21:19:02 2015-12-09 21:19:02,744 INFO: Tool found: pegasus-s3 Version: N/A Path: /lfs1/software/bamboo/data/xml-data/build-dir/PEGASUS-WT-T016/pegasus/bin/pegasus-s3
09-Dec-2015 21:19:02 2015-12-09 21:19:02,806 INFO: pegasus-s3 get 's3://test@amazon/pegasus-isi-transfer-tests/many-small-files/multimedia-volume-control.svg' '/lfs1/pegasus-transfer-testing/tmp/many-small-files/multimedia-volume-control.svg'
09-Dec-2015 21:19:04 2015-12-09 21:19:04,161 INFO: pegasus-s3 cp -f -c 's3s://test@amazon/pegasus-isi-transfer-tests/medium-files/b.txt' 's3s://test@amazon/pegasus-isi-transfer-tests/medium-files/d.txt'
09-Dec-2015 21:19:04 2015-12-09 21:19:04,727 INFO: pegasus-s3 cp -f -c 's3://test@amazon/pegasus-isi-transfer-tests/medium-files/b.txt' 's3://test@amazon/pegasus-isi-transfer-tests/medium-files/c.txt'
09-Dec-2015 21:21:17 2015-12-09 21:21:17,644 INFO: ERROR: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
09-Dec-2015 21:21:17 2015-12-09 21:21:17,644 ERROR: Command exited with non-zero exit code (1): pegasus-s3 ...
09-Dec-2015 21:21:46 2015-12-09 21:21:46,675 INFO: --------------------------------------------------------------------------------
09-Dec-2015 21:21:46 2015-12-09 21:21:46,675 INFO: Starting transfers - attempt 2
09-Dec-2015 21:21:48 2015-12-09 21:21:48,677 INFO: pegasus-s3 cp -f -c 's3s://test@amazon/pegasus-isi-transfer-tests/medium-files/b.txt' 's3s://test@amazon/pegasus-isi-transfer-tests/medium-files/d.txt'
09-Dec-2015 21:23:50 2015-12-09 21:23:50,316 INFO: ERROR: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
09-Dec-2015 21:23:50 2015-12-09 21:23:50,317 ERROR: Command exited with non-zero exit code (1): pegasus-s3 ...
09-Dec-2015 21:26:06 2015-12-09 21:26:06,416 INFO: --------------------------------------------------------------------------------
09-Dec-2015 21:26:06 2015-12-09 21:26:06,417 INFO: Starting transfers - attempt 3
09-Dec-2015 21:26:08 2015-12-09 21:26:08,420 INFO: pegasus-s3 cp -f -c 's3s://test@amazon/pegasus-isi-transfer-tests/medium-files/b.txt' 's3s://test@amazon/pegasus-isi-transfer-tests/medium-files/d.txt'
09-Dec-2015 21:29:04 2015-12-09 21:29:04,088 INFO: ERROR: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:581)
09-Dec-2015 21:29:04 2015-12-09 21:29:04,089 ERROR: Command exited with non-zero exit code (1): pegasus-s3 ...
09-Dec-2015 21:29:04 2015-12-09 21:29:04,090 INFO: --------------------------------------------------------------------------------
09-Dec-2015 21:29:04 2015-12-09 21:29:04,090 INFO: Unable to provide stats for third party gsiftp/srm transfers
09-Dec-2015 21:29:04 2015-12-09 21:29:04,090 CRITICAL: Some transfers failed! See above, and possibly stderr.