It seems apt-get update
is failed on arch: arm64
and dist: xenial
environment by following error.
It is related to the mongodb repository issue. It is trying to get mongodb binary repository for amd64, not arm64, seeing the log.
$ tool/travis_retry.sh sudo apt-get update -yq
+ sudo apt-get update -yq
...
W: GPG error: https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/4.0 Release: The following signatures were invalid: BADSIG 68818C72E52529D4 MongoDB 4.0 Release Signing Key <packaging@mongodb.com>
W: The repository 'https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/4.0 Release' is not signed.
E: Failed to fetch https://repo.mongodb.org/apt/ubuntu/dists/xenial/mongodb-org/4.0/multiverse/binary-amd64/Packages Writing more data than expected (296872 > 286809)
...