try to remove coverage package

5 jobs for ci_experiments in 5 minutes and 39 seconds
Status Job ID Name Coverage
  Build Docker
passed #543740
build_docker

00:03:15

 
  Test
passed #543743
test_python2_mpi

00:02:03

passed #543741
test_python2_scalar

00:01:14

passed #543744
test_python3_mpi

00:02:24

passed #543742
test_python3_scalar

00:01:24