Test fixes for ROOT PR1468

[dpiparo]

[phsft-bot]

Starting build on centos7/gcc49, mac1012/native, slc6/gcc49, slc6/gcc62, slc6/gcc62, ubuntu14/native, ubuntu14/native, windows10/vc15 with flags -Dvc=OFF -Dimt=ON -Dccache=ON How to customize builds

[phsft-bot]

Build failed on slc6/gcc62. See console output.

Errors:

• ERROR: Timeout after 10 minutes
• ERROR: Error cloning remote repo 'origin'
• ERROR: Error cloning remote repo 'origin'
• ccache: error: Failed to fork: Resource temporarily unavailable

[phsft-bot]

Build failed on centos7/gcc49. See console output.

Failing tests:

• projectroot.roottest.root.multicore.roottest_root_multicore_ttree_read_imt

[phsft-bot]

Build failed on slc6/gcc49. See console output.

Failing tests:

• projectroot.roottest.root.multicore.roottest_root_multicore_ttree_read_imt

[phsft-bot]

Build failed on slc6/gcc62. See console output.

Failing tests:

• projectroot.roottest.root.multicore.roottest_root_multicore_ttree_read_imt

[phsft-bot]

Build failed on mac1012/native. See console output.

Errors:

• ERROR: Timeout after 10 minutes
• ERROR: Error cloning remote repo 'origin'
• error: index-pack died of signal 15
• ERROR: Error cloning remote repo 'origin'

Failing tests:

• projectroot.roottest.root.multicore.roottest_root_multicore_ttree_read_imt

[phsft-bot]

Build failed on ubuntu14/native. See console output.

Failing tests:

• projectroot.roottest.root.multicore.roottest_root_multicore_ttree_read_imt

[phsft-bot]

Build failed on ubuntu14/native. See console output.

Failing tests:

• projectroot.roottest.root.multicore.roottest_root_multicore_ttree_read_imt

[etejedor]

@dpiparo does this still make sense?