{"action":"created","issue":{"url":"https://api.github.com/repos/docker/docker/issues/13695","labels_url":"https://api.github.com/repos/docker/docker/issues/13695/labels{/name}","comments_url":"https://api.github.com/repos/docker/docker/issues/13695/comments","events_url":"https://api.github.com/repos/docker/docker/issues/13695/events","html_url":"https://github.com/docker/docker/issues/13695","id":84417450,"number":13695,"title":"Downgrade from 1.7 to 1.6 doesn't work","user":{"login":"ibuildthecloud","id":1754002,"avatar_url":"https://avatars.githubusercontent.com/u/1754002?v=3","gravatar_id":"","url":"https://api.github.com/users/ibuildthecloud","html_url":"https://github.com/ibuildthecloud","followers_url":"https://api.github.com/users/ibuildthecloud/followers","following_url":"https://api.github.com/users/ibuildthecloud/following{/other_user}","gists_url":"https://api.github.com/users/ibuildthecloud/gists{/gist_id}","starred_url":"https://api.github.com/users/ibuildthecloud/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ibuildthecloud/subscriptions","organizations_url":"https://api.github.com/users/ibuildthecloud/orgs","repos_url":"https://api.github.com/users/ibuildthecloud/repos","events_url":"https://api.github.com/users/ibuildthecloud/events{/privacy}","received_events_url":"https://api.github.com/users/ibuildthecloud/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/docker/docker/labels/kind/regression","name":"kind/regression","color":"DE6262"}],"state":"open","locked":false,"assignee":{"login":"calavera","id":1050,"avatar_url":"https://avatars.githubusercontent.com/u/1050?v=3","gravatar_id":"","url":"https://api.github.com/users/calavera","html_url":"https://github.com/calavera","followers_url":"https://api.github.com/users/calavera/followers","following_url":"https://api.github.com/users/calavera/following{/other_user}","gists_url":"https://api.github.com/users/calavera/gists{/gist_id}","starred_url":"https://api.github.com/users/calavera/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/calavera/subscriptions","organizations_url":"https://api.github.com/users/calavera/orgs","repos_url":"https://api.github.com/users/calavera/repos","events_url":"https://api.github.com/users/calavera/events{/privacy}","received_events_url":"https://api.github.com/users/calavera/received_events","type":"User","site_admin":false},"milestone":{"url":"https://api.github.com/repos/docker/docker/milestones/38","html_url":"https://github.com/docker/docker/milestones/1.7.0","labels_url":"https://api.github.com/repos/docker/docker/milestones/38/labels","id":1010239,"number":38,"title":"1.7.0","description":"Freeze May 26\r\nRelease  June 16","creator":{"login":"dmcgowan","id":169601,"avatar_url":"https://avatars.githubusercontent.com/u/169601?v=3","gravatar_id":"","url":"https://api.github.com/users/dmcgowan","html_url":"https://github.com/dmcgowan","followers_url":"https://api.github.com/users/dmcgowan/followers","following_url":"https://api.github.com/users/dmcgowan/following{/other_user}","gists_url":"https://api.github.com/users/dmcgowan/gists{/gist_id}","starred_url":"https://api.github.com/users/dmcgowan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dmcgowan/subscriptions","organizations_url":"https://api.github.com/users/dmcgowan/orgs","repos_url":"https://api.github.com/users/dmcgowan/repos","events_url":"https://api.github.com/users/dmcgowan/events{/privacy}","received_events_url":"https://api.github.com/users/dmcgowan/received_events","type":"User","site_admin":false},"open_issues":4,"closed_issues":76,"state":"open","created_at":"2015-03-07T01:54:49Z","updated_at":"2015-06-03T16:29:59Z","due_on":"2016-05-16T07:00:00Z","closed_at":null},"comments":5,"created_at":"2015-06-03T07:46:30Z","updated_at":"2015-06-03T16:50:50Z","closed_at":null,"body":"Before going into exactly what is failing I have to first ask the question whether this is supported.  If a user upgrades to 1.7 and then downgrade to 1.6, should things still work?  I would say yes they should as that has always seemed to work in the past.  With 1.7 I'm getting errors now.  Basically after reverting back to 1.6 I get errors like:\r\n\r\n```time=\"2015-06-03T07:43:11Z\" level=fatal msg=\"reflect: call of reflect.Value.Type on zero Value\" ```"},"comment":{"url":"https://api.github.com/repos/docker/docker/issues/comments/108520858","html_url":"https://github.com/docker/docker/issues/13695#issuecomment-108520858","issue_url":"https://api.github.com/repos/docker/docker/issues/13695","id":108520858,"user":{"login":"duglin","id":1944671,"avatar_url":"https://avatars.githubusercontent.com/u/1944671?v=3","gravatar_id":"","url":"https://api.github.com/users/duglin","html_url":"https://github.com/duglin","followers_url":"https://api.github.com/users/duglin/followers","following_url":"https://api.github.com/users/duglin/following{/other_user}","gists_url":"https://api.github.com/users/duglin/gists{/gist_id}","starred_url":"https://api.github.com/users/duglin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/duglin/subscriptions","organizations_url":"https://api.github.com/users/duglin/orgs","repos_url":"https://api.github.com/users/duglin/repos","events_url":"https://api.github.com/users/duglin/events{/privacy}","received_events_url":"https://api.github.com/users/duglin/received_events","type":"User","site_admin":false},"created_at":"2015-06-03T16:50:50Z","updated_at":"2015-06-03T16:50:50Z","body":"@ibuildthecloud how can I reproduce this? I switch between 1.7 and 1.6 a lot (usually when my 1.7 build fails to build) and I've never seen this.  What command were you running to see that error msg?"}}