[DF] Add logging to RunGraphs

[eguiraud]

I am not a fan of the boolean switch now passed to RLoopManager::Run, but I could not think of anything else.

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-performance-centos8-multicore/cxx17. Running on olbdw-01.cern.ch:/data/sftnight/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.runtutorials.tutorial_tmva_TMVA_RNN_Classification_py

[phsft-bot]

Build failed on mac11/cxx14. Running on macphsft23.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.runtutorials.tutorial_tmva_TMVA_RNN_Classification_py

[phsft-bot]

Build failed on mac1015/cxx17. Running on macitois21.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.gui.webdisplay.test.test_webgui_ping
• projectroot.roottest.python.distrdf.dask.roottest_python_distrdf_dask_test_all
• projectroot.roottest.python.distrdf.spark.roottest_python_distrdf_spark_test_all

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on windows10/cxx14. Running on null:C:\build\workspace\root-pullrequests-build See console output.

Failing tests:

• projectroot.tree.dataframe.test.gtest_tree_dataframe_test_datasource_root

[phsft-bot]

Build failed on mac11/cxx14. Running on macphsft20.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.python.distrdf.common.roottest_python_distrdf_common_test_all

[phsft-bot]

Build failed on mac1015/cxx17. Running on macitois21.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.python.distrdf.dask.roottest_python_distrdf_dask_test_all
• projectroot.roottest.python.distrdf.spark.roottest_python_distrdf_spark_test_all

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[eguiraud]

Rebased to fix conflicts.

[phsft-bot]

Build failed on mac11/cxx14. Running on macphsft23.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.python.distrdf.common.roottest_python_distrdf_common_test_all

[phsft-bot]

Build failed on mac1015/cxx17. Running on macitois22.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.root.dataframe.roottest_root_dataframe_ctors

[eguiraud]

@phsft-bot build please

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on mac11/cxx14. Running on macphsft23.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Failing tests:

• projectroot.roottest.python.distrdf.common.roottest_python_distrdf_common_test_all