Line monitoring output collides (Moore tests fail)

We now have two lines that try to write to monitor.root and this seems to cause issues in the tests:

Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Error in <TFile::ReadBuffer>: error reading all requested bytes from file output/monitor.root, got 63 of 300
Error in <TFile::Init>: output/monitor.root failed to read the file type data.
Error in <TROOT::WriteTObject>: The current directory (root) is not associated with a file. The object (monitor_treeHlt1RICH1Alignment) has not been written.
Warning in <TFile::Init>: file output/monitor.root probably not closed, cannot read free segments
Warning in <TFile::Init>: file output/monitor.root probably not closed, trying to recover
Info in <TFile::Recover>: output/monitor.root, recovered key TTree:monitor_treeHlt1KsToPiPi at address 234
Warning in <TFile::Init>: successfully recovered 1 keys
 *** Break *** segmentation violation