Improve parallelism in motifs()

6 jobs for master in 175 minutes and 39 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #2213
amd64
job_clang_amd64

02:55:38

failed #2217
amd64
job_clang_amd64_nosh

02:44:38

failed #2215
amd64
job_clang_py2_amd64

02:51:16

failed #2212
amd64
job_gcc_amd64

02:09:06

failed #2216
amd64
job_gcc_amd64_nosh

02:07:14

failed #2214
amd64
job_gcc_py2_amd64

02:08:47

 
Name Stage Failure
failed
job_clang_amd64_nosh Test There is an unknown failure, please try again

Doctest summary
===============
1024 tests
1 failure in tests
0 failures in setup code
0 failures in cleanup code
build finished with problems, 158 warnings.
ERROR: Build failed: exit status 1
failed
job_gcc_amd64_nosh Test There is an unknown failure, please try again
/usr/lib/python3.6/site-packages/matplotlib/pyplot.py:524: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)
/usr/lib/python3.6/site-packages/matplotlib/tight_layout.py:222: UserWarning: tight_layout : falling back to Agg renderer
warnings.warn("tight_layout : falling back to Agg renderer")
/usr/lib/python3.6/site-packages/matplotlib/pyplot.py:524: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)
/usr/lib/python3.6/site-packages/matplotlib/pyplot.py:524: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)
ERROR: Build failed: exit status 1
failed
job_clang_py2_amd64 Test There is an unknown failure, please try again

Doctest summary
===============
1024 tests
1 failure in tests
0 failures in setup code
0 failures in cleanup code
build finished with problems, 164 warnings.
ERROR: Build failed: exit status 1
failed
job_gcc_py2_amd64 Test There is an unknown failure, please try again

Doctest summary
===============
1024 tests
1 failure in tests
0 failures in setup code
0 failures in cleanup code
build finished with problems, 164 warnings.
ERROR: Build failed: exit status 1
failed
job_clang_amd64 Test There is an unknown failure, please try again
/usr/lib/python3.6/site-packages/matplotlib/tight_layout.py:222: UserWarning: tight_layout : falling back to Agg renderer
warnings.warn("tight_layout : falling back to Agg renderer")
/usr/lib/python3.6/site-packages/matplotlib/pyplot.py:524: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)
/usr/lib/python3.6/site-packages/matplotlib/tight_layout.py:222: UserWarning: tight_layout : falling back to Agg renderer
warnings.warn("tight_layout : falling back to Agg renderer")
/usr/lib/python3.6/site-packages/matplotlib/pyplot.py:524: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)
ERROR: Build failed: exit status 1
failed
job_gcc_amd64 Test There is an unknown failure, please try again
    1 failure in tests
0 failures in setup code
0 failures in cleanup code
build finished with problems, 158 warnings.
/usr/lib/python3.6/site-packages/matplotlib/tight_layout.py:222: UserWarning: tight_layout : falling back to Agg renderer
warnings.warn("tight_layout : falling back to Agg renderer")
/usr/lib/python3.6/site-packages/matplotlib/pyplot.py:524: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)
ERROR: Build failed: exit status 1