during build packages, chaps build fails a couple of times and then succeeds after retry.

This can be confusing at times. (Spend sometime looking at this failure when the real failure I was supposed to look at was later in the build_packages process.

Please fix.

An example is here:
https://uberchromegw.corp.google.com/i/chromeos/builders/falco-paladin/builds/12377/steps/BuildPackages/logs/stdio

Assigning to dkrahn, please assign to the right person. Dont know what labels to use.