2017/06/16 14:32:26 Error executing external:raspbian-8-arm-32:tests/main/classic-ubuntu-core-transition : 
-----
stdin: is not a tty
+ . /home/gopath/src/github.com/snapcore/snapd/tests/lib/pkgdb.sh
++ . /home/gopath/src/github.com/snapcore/snapd/tests/lib/quiet.sh
++ DISTRO_BUILD_DEPS=()
++ export DISTRO_BUILD_DEPS
++ case "$SPREAD_SYSTEM" in
++ DISTRO_BUILD_DEPS=(build-essential curl devscripts expect gdebi-core jq rng-tools git netcat-openbsd)
+ echo 'Ensure core is gone and we have ubuntu-core instead'
Ensure core is gone and we have ubuntu-core instead
+ dpkg --purge --force-depends snapd
(Reading database ... 32639 files and directories currently installed.)
Removing snapd (2.26.4+raspbian2) ...
Warning: Stopping snapd.service, but it can still be activated by:
  snapd.socket
Purging configuration files for snapd (2.26.4+raspbian2) ...
Stopping snap-core-1690.mount
Stoping snap-core-1690.mount
Removing snap core
Removing snap-core-1690.mount
Stopping snap-core-2181.mount
Stoping snap-core-2181.mount
Removing snap core
Removing snap-core-2181.mount
Final directory cleanup
Discarding preserved snap namespaces
umount: /run/snapd/ns/aliases.mnt: not mounted
umount: /run/snapd/ns/basic-hooks.mnt: not mounted
umount: /run/snapd/ns/basic-iface-hooks-consumer.mnt: not mounted
umount: /run/snapd/ns/basic-iface-hooks-producer.mnt: not mounted
umount: /run/snapd/ns/core.mnt: not mounted
umount: /run/snapd/ns/data-writer.mnt: not mounted
umount: /run/snapd/ns/failing-config-hooks.mnt: not mounted
umount: /run/snapd/ns/generic-consumer.mnt: not mounted
umount: /run/snapd/ns/hardware-observe-consumer.mnt: not mounted
umount: /run/snapd/ns/home-consumer.mnt: not mounted
umount: /run/snapd/ns/mount-observe-consumer.mnt: not mounted
umount: /run/snapd/ns/network-bind-consumer.mnt: not mounted
umount: /run/snapd/ns/network-consumer.mnt: not mounted
umount: /run/snapd/ns/network-observe-consumer.mnt: not mounted
umount: /run/snapd/ns/process-control-consumer.mnt: not mounted
umount: /run/snapd/ns/snapctl-from-snap.mnt: not mounted
umount: /run/snapd/ns/snapctl-hooks.mnt: not mounted
umount: /run/snapd/ns/test-snapd-auto-aliases.mnt: not mounted
umount: /run/snapd/ns/test-snapd-control-consumer.mnt: not mounted
umount: /run/snapd/ns/test-snapd-dbus-provider.mnt: not mounted
umount: /run/snapd/ns/test-snapd-fuse-consumer.mnt: not mounted
umount: /run/snapd/ns/test-snapd-go-webserver.mnt: not mounted
umount: /run/snapd/ns/test-snapd-multi-service.mnt: not mounted
umount: /run/snapd/ns/test-snapd-openvswitch-consumer.mnt: not mounted
umount: /run/snapd/ns/test-snapd-python-webserver.mnt: not mounted
umount: /run/snapd/ns/test-snapd-service-try.mnt: not mounted
umount: /run/snapd/ns/test-snapd-service.mnt: not mounted
umount: /run/snapd/ns/test-snapd-tools.mnt: not mounted
umount: /run/snapd/ns/test-snapd-upower-observe-consumer.mnt: not mounted
umount: /run/snapd/ns/: not mounted
Removing extra snap-confine apparmor rules
Removing snapd state
Processing triggers for man-db (2.7.0.2-5) ...
+ apt-get install -f -y
Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
  apparmor libapparmor-perl libapparmor1 liblzo2-2 squashfs-tools
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 53 not upgraded.
+ distro_install_build_snapd
+ '[' 1 = 1 ']'
+ apt install -y snapd

WARNING: apt does not have a stable CLI interface yet. Use with caution in scripts.

Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
  snapd
0 upgraded, 1 newly installed, 0 to remove and 53 not upgraded.
Need to get 0 B/7,138 kB of archives.
After this operation, 38.9 MB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  snapd
E: There are problems and -y was used without --force-yes