Source: ck Version: 0.7.2-10 ck's build tests run without ending on arm64 as seen on Ubuntu's Launchpad builders. This was noticed with 0.7.2-5 and I confirmed it also happens with 0.7.2-10. https://launchpad.net/bugs/2097833
Therefore, please remove arm64 from the list of architectures where this package runs dh_auto_test. Thank you, Jeremy Bícha
