bionic verification: ubuntu@crash-bionic:~/crash-7.2.8$ sudo sh ./debian/tests/live Adding linux-image debug symbols. Executing: /tmp/apt-key-gpghome.vuS9jI2yc6/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys C8CAB6595FDFF622 gpg: key C8CAB6595FDFF622: 5 signatures not checked due to missing keys gpg: key C8CAB6595FDFF622: "Ubuntu Debug Symbol Archive Automatic Signing Key (2016)