feat: drop python2

--HG--
branch : seda21
13 jobs for !22 with topic/seda21/drop-python2 in 4 minutes and 33 seconds (queued for 17 seconds)
detached
Status Job ID Name Coverage
  Lint
passed #336542
check-manifest

00:00:26

passed #336541
flake8

00:00:39

 
  Tests
failed #342960
py27

00:02:40

failed #346278
py3

00:01:13

failed #336543
py27

00:02:18

failed #342885
py27

00:02:43

failed #342812
py27

00:02:38

failed #342738
py27

00:02:41

failed #342111
py27

00:03:40

failed #339524
py27

00:07:11

failed #339488
py27

00:02:19

failed #339401
py27

00:03:08

failed #336544
py3

00:01:35

 
Name Stage Failure
failed
py3 Tests
Uploading artifacts for failed job
Uploading artifacts...
py3-deprecated-warnings.json: found 1 matching files and directories

Uploading artifacts as "archive" to coordinator... ok
id=346278 responseStatus=201 Created token=Vsj9Ggy2
Uploading artifacts...
report.xml: found 1 matching files and directories

Uploading artifacts as "junit" to coordinator... ok
id=346278 responseStatus=201 Created token=Vsj9Ggy2
Cleaning up file based variables
ERROR: Job failed: command terminated with exit code 1
failed
py27 Tests
E       Diff is 857 characters long. Set self.maxDiff to None to see it.

test/test_xsd2yams.py:261: AssertionError
============== 42 failed, 10 passed, 82 skipped in 100.80 seconds ==============
ERROR: InvocationError for command /builds/cubicweb/cubes/seda/.tox/py27/bin/python -m pytest test (exited with code 1)
___________________________________ summary ____________________________________
ERROR: py27: commands failed
Cleaning up file based variables
ERROR: Job failed: command terminated with exit code 1