Continue to debug CI

- find what the real exception is
4 jobs for 43-unittests in 1 minute and 20 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #1954
Go-py2.7

00:01:12

passed #1955
Go-py3.4

00:01:20

passed #1956
Go-py3.5

00:00:51

passed #1957
Go-py3.6

00:01:19

58.0%