add support to python3.8

3 jobs for master in 7 minutes and 30 seconds
Status Job ID Name Coverage
  Build
passed #16207
manylinux1

00:03:20

passed #16206
manylinux2010

00:04:09

failed #16208
osx_10.13.6
OSX

00:00:02

 
Name Stage Failure
failed
OSX Build
Checking out dfca4fd2 as master...
Skipping Git submodules setup
Checking cache for osx...
Runtime platform arch=amd64 os=darwin pid=32597 revision=unknown version=12.2.0
No URL provided, cache will not be downloaded from shared cache server. Instead a local version of cache will be extracted.

Successfully extracted cache
$ source /opt/usr/nemo/nemo_start.sh
bash: line 102: /opt/usr/nemo/nemo_start.sh: No such file or directory
ERROR: Job failed: exit status 1