Ask if agent is in jam before deleting

This is an attempt to solve #273
4 jobs for escalator in 16 seconds (queued for 8 seconds)
latest
Status Job ID Name Coverage
  Configure
passed #35481
linux
configure-linux

00:00:16

 
  Compile
failed #36793
linux
make-linux

00:00:00

failed #35482
linux
make-linux

00:06:11

 
  Unit Test
skipped #35483
linux
test
 
Name Stage Failure
failed
make-linux Compile There has been a missing dependency failure
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