2017/06/08 14:54:23.100878 taskrunner.go:367: DEBUG: Running task 46 on Do: Mount snap "core" (1689)
2017/06/08 14:54:23.658729 taskrunner.go:367: DEBUG: Running task 47 on Do: Copy snap "core" data
2017/06/08 14:54:23.703330 taskrunner.go:367: DEBUG: Running task 48 on Do: Setup snap "core" (1689) security profiles
2017/06/08 14:54:24.090572 cmd.go:118: DEBUG: re-exec disabled by user
2017/06/08 14:54:24.119527 task.go:303: DEBUG: 2017-06-08T14:54:24+01:00 ERROR cannot setup mount for snap "core": cannot update mount namespace of snap "core": cannot update preserved namespace of snap "core": cannot update snap namespace: not implemented
2017/06/08 14:54:24.138691 task.go:303: DEBUG: 2017-06-08T14:54:24+01:00 ERROR cannot update mount namespace of snap "core": cannot update preserved namespace of snap "core": cannot update snap namespace: not implemented
2017/06/08 14:54:24.161573 taskrunner.go:367: DEBUG: Running task 47 on Undo: Copy snap "core" data
2017/06/08 14:54:24.201253 taskrunner.go:367: DEBUG: Running task 44 on Undo: Download snap "core" (1689) from channel "stable"
2017/06/08 14:54:24.222930 errtracker.go:159: errtracker.Report is *not* sent because SNAPPY_TESTING is set
2017/06/08 14:54:24.223009 errtracker.go:160: report: map[ProblemType:Snap DuplicateSignature:snap-install:
download-snap: Undoing
 snap-setup: "core"
validate-snap: Done
mount-snap: Undo
copy-snap-data: Undoing
setup-profiles: Error
 ERROR cannot setup mount for snap "core": cannot update mount namespace of snap "core": cannot update preserved namespace of snap "core": cannot update snap namespace: not implemented
 ERROR cannot update mount namespace of snap "core": cannot update preserved namespace of snap "core": cannot update snap namespace: not implemented
link-snap: Hold
setup-profiles: Hold
set-auto-aliases: Hold
setup-aliases: Hold
start-snap-services: Hold
run-hook: Hold SnapConfineAppArmorProfileDpkgNewMD5Sum: Channel:stable Revision:1689 SnapdVersion:2.26.3+git324.g27a9d88.dirty HostSnapdBuildID:f4b6cf3f5428dc8c7f4e80d803644db2038403a6 Snap:core SnapConfineAppArmorProfileCurrentMD5Sum:48222764f959562761258fae6bf6199b KernelVersion:4.4.0-78-generic DidSnapdReExec:no Architecture:amd64 DistroRelease:Ubuntu 16.04 CoreSnapdBuildID:unknown Date:Thu Jun  8 14:54:24 2017 ErrorMessage:change "install-snap": "Install \"core\" snap"
download-snap: Undoing
 snap-setup: "core" (1689) "stable"
validate-snap: Done
mount-snap: Undo
copy-snap-data: Undoing
setup-profiles: Error
 ERROR cannot setup mount for snap "core": cannot update mount namespace of snap "core": cannot update preserved namespace of snap "core": cannot update snap namespace: not implemented
 ERROR cannot update mount namespace of snap "core": cannot update preserved namespace of snap "core": cannot update snap namespace: not implemented
link-snap: Hold
setup-profiles: Hold
set-auto-aliases: Hold
setup-aliases: Hold
start-snap-services: Hold
run-hook: Hold]
2017/06/08 14:54:24.223075 handlers.go:204: Reported install problem for "core" as oops-not-sent
2017/06/08 14:54:24.261425 taskrunner.go:367: DEBUG: Running task 46 on Undo: Mount snap "core" (1689)