Update autoconf tests for C++14

6 jobs for master in 167 minutes and 58 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #2132
amd64
job_clang_amd64

02:47:58

failed #2136
amd64
job_clang_amd64_nosh

02:46:13

passed #2134
amd64
job_clang_py2_amd64

02:47:40

passed #2131
amd64
job_gcc_amd64

02:14:05

failed #2135
amd64
job_gcc_amd64_nosh

02:11:32

passed #2133
amd64
job_gcc_py2_amd64

02:09:18

 
Name Stage Failure
failed
job_gcc_amd64_nosh 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, 157 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
failed
job_clang_amd64_nosh Test There is an unknown failure, please try again
===============
1005 tests
1 failure in tests
0 failures in setup code
0 failures in cleanup code
build finished with problems, 157 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")
ERROR: Build failed: exit status 1