Fix doc building on Python 2.7

12 jobs for doc27 in 24 minutes and 19 seconds (queued for 9 seconds)
Status Name Job ID Coverage
  Build
passed build_linux_27 #64853
conda-linux

00:09:08

passed build_linux_34 #64855
conda-linux

00:10:28

passed build_linux_35 #64857
conda-linux

00:06:57

passed build_macosx_27 #64858
conda-macosx

00:02:25

passed build_macosx_34 #64856
conda-macosx

00:03:10

passed build_macosx_35 #64854
conda-macosx

00:02:53

 
  Test
passed test_linux_27 #64863
conda-linux

00:03:14

74.0%
passed test_linux_34 #64861
conda-linux

00:08:11

74.0%
passed test_linux_35 #64859
conda-linux

00:05:24

74.0%
passed test_macosx_27 #64860
conda-macosx

00:03:02

74.0%
passed test_macosx_34 #64862
conda-macosx

00:02:07

74.0%
passed test_macosx_35 #64864
conda-macosx

00:01:43

74.0%