{"action":"opened","issue":{"url":"https://api.github.com/repos/immutables/immutables/issues/146","labels_url":"https://api.github.com/repos/immutables/immutables/issues/146/labels{/name}","comments_url":"https://api.github.com/repos/immutables/immutables/issues/146/comments","events_url":"https://api.github.com/repos/immutables/immutables/issues/146/events","html_url":"https://github.com/immutables/immutables/issues/146","id":98565241,"number":146,"title":"Compile error for derived collection: implementation type mismatch","user":{"login":"augustotravillio","id":4958369,"avatar_url":"https://avatars.githubusercontent.com/u/4958369?v=3","gravatar_id":"","url":"https://api.github.com/users/augustotravillio","html_url":"https://github.com/augustotravillio","followers_url":"https://api.github.com/users/augustotravillio/followers","following_url":"https://api.github.com/users/augustotravillio/following{/other_user}","gists_url":"https://api.github.com/users/augustotravillio/gists{/gist_id}","starred_url":"https://api.github.com/users/augustotravillio/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/augustotravillio/subscriptions","organizations_url":"https://api.github.com/users/augustotravillio/orgs","repos_url":"https://api.github.com/users/augustotravillio/repos","events_url":"https://api.github.com/users/augustotravillio/events{/privacy}","received_events_url":"https://api.github.com/users/augustotravillio/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/immutables/immutables/labels/bug","name":"bug","color":"fc2929"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/immutables/immutables/milestones/13","html_url":"https://github.com/immutables/immutables/milestones/2.1","labels_url":"https://api.github.com/repos/immutables/immutables/milestones/13/labels","id":1212347,"number":13,"title":"2.1","description":null,"creator":{"login":"elucash","id":1692611,"avatar_url":"https://avatars.githubusercontent.com/u/1692611?v=3","gravatar_id":"","url":"https://api.github.com/users/elucash","html_url":"https://github.com/elucash","followers_url":"https://api.github.com/users/elucash/followers","following_url":"https://api.github.com/users/elucash/following{/other_user}","gists_url":"https://api.github.com/users/elucash/gists{/gist_id}","starred_url":"https://api.github.com/users/elucash/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/elucash/subscriptions","organizations_url":"https://api.github.com/users/elucash/orgs","repos_url":"https://api.github.com/users/elucash/repos","events_url":"https://api.github.com/users/elucash/events{/privacy}","received_events_url":"https://api.github.com/users/elucash/received_events","type":"User","site_admin":false},"open_issues":7,"closed_issues":0,"state":"open","created_at":"2015-07-17T06:24:04Z","updated_at":"2015-08-01T22:27:07Z","due_on":null,"closed_at":null},"comments":0,"created_at":"2015-08-01T22:27:07Z","updated_at":"2015-08-01T22:27:07Z","closed_at":null,"body":"```java\r\n@Value.Immutable\r\nabstract class Val {\r\n  @Value.Derived Set<Integer> available() {\r\n    return ImmutableSet.of(1);\r\n  }\r\n}\r\n```\r\n\r\nCompile error in generated code:\r\nType mismatch: cannot convert from Set<Integer> to ImmutableSet<Integer>\r\n"}}