Raise when chromium headless crashed, instead of silently return None

4 jobs for master in 3 minutes and 41 seconds (queued for 12 seconds)
latest
Status Job ID Name Coverage
  Download
failed #275218
dbnomics-fetcher
download

00:03:41

 
  Convert
skipped #275223
dbnomics-fetcher
convert
 
  Validate
skipped #275229
dbnomics-fetcher
validate
 
  Index
skipped #275234
dbnomics-indexer
index
 
Name Stage Failure
failed
download Download
real	0m27.115s
user 0m1.883s
sys 0m0.684s
+ kill 2680
Uploading artifacts for failed job
Uploading artifacts...
WARNING: /builds/dbnomics-fetchers/bcb-fetcher/job.env: no matching files
ERROR: No files to upload
ERROR: Job failed: command terminated with exit code 1