Use generators to save memory

12 jobs for generator in 20 minutes and 27 seconds (queued for 41 seconds)
Status Job ID Name Coverage
  Build
passed #87080
conda-linux
build_linux_27

00:02:06

passed #87081
conda-linux
build_linux_35

00:01:44

passed #87082
conda-linux
build_linux_36

00:02:01

passed #87083
conda-macosx
build_macosx_27

00:02:57

passed #87084
conda-macosx
build_macosx_35

00:03:02

passed #87085
conda-macosx
build_macosx_36

00:02:43

 
  Test
passed #87086
conda-linux
test_linux_27

00:01:37

passed #87087
conda-linux
test_linux_35

00:01:42

passed #87088
conda-linux
test_linux_36

00:01:39

passed #87089
conda-macosx
test_macosx_27

00:03:04

passed #87090
conda-macosx
test_macosx_35

00:03:04

passed #87091
conda-macosx
test_macosx_36

00:02:47