Space in checkpointFile name will make it fail

[sjfleming]

I am using checkpointFile in the runtime section of a WDL task.

I accidentally included a space in the checkpoint file name, and I see in the logs that this (probably) breaks checkpointing.

Log file shows

CHECKPOINTING: Making local copy of /cromwell_root/noise_prompting_classical monocyte_H_shard0.csv
cp: can't create 'monocyte_H_shard0.csv-tmp/noise_prompting_classical': No such file or directory
cp: can't create 'monocyte_H_shard0.csv-tmp/monocyte_H_shard0.csv': No such file or directory
cp: can't create 'monocyte_H_shard0.csv-tmp/noise_prompting_classical': No such file or directory
CHECKPOINTING: Uploading new checkpoint content

Running on GCP via Terra.

When I remove the space in the filename, I see this in the logs, which appears to be working fine:

CHECKPOINTING: Making local copy of /cromwell_root/noise_prompting_classical_monocyte_H_shard0.csv
CHECKPOINTING: Uploading new checkpoint content