Spurious CI failures on "apt-get update"
Some of my jobs get failed due well-known failure of apt-get update: hash mismatch. This error does not represent that there is something wrong with my package, only that mirror, used by Gitlab is in inconsistent state.
Failure of "apt-get update" command is obliviously not a problem in package being tested, it is some transient error.
Please, consider making this command to be more robust: switch to another mirror and try again, for example.