{"action":"created","issue":{"url":"https://api.github.com/repos/rust-lang/rust/issues/26970","labels_url":"https://api.github.com/repos/rust-lang/rust/issues/26970/labels{/name}","comments_url":"https://api.github.com/repos/rust-lang/rust/issues/26970/comments","events_url":"https://api.github.com/repos/rust-lang/rust/issues/26970/events","html_url":"https://github.com/rust-lang/rust/issues/26970","id":94481703,"number":26970,"title":"Misleading error message on use of FnOnce<(T, U), Output=V>","user":{"login":"llogiq","id":4200835,"avatar_url":"https://avatars.githubusercontent.com/u/4200835?v=3","gravatar_id":"","url":"https://api.github.com/users/llogiq","html_url":"https://github.com/llogiq","followers_url":"https://api.github.com/users/llogiq/followers","following_url":"https://api.github.com/users/llogiq/following{/other_user}","gists_url":"https://api.github.com/users/llogiq/gists{/gist_id}","starred_url":"https://api.github.com/users/llogiq/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/llogiq/subscriptions","organizations_url":"https://api.github.com/users/llogiq/orgs","repos_url":"https://api.github.com/users/llogiq/repos","events_url":"https://api.github.com/users/llogiq/events{/privacy}","received_events_url":"https://api.github.com/users/llogiq/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/rust-lang/rust/labels/A-closures","name":"A-closures","color":"d7e102"},{"url":"https://api.github.com/repos/rust-lang/rust/labels/A-diagnostics","name":"A-diagnostics","color":"d7e102"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-07-11T15:17:00Z","updated_at":"2015-07-28T14:47:15Z","closed_at":null,"body":"[This stack overflow question](http://stackoverflow.com/questions/31353960/how-to-use-parentheses-for-generics/31354984?noredirect=1#comment50696461_31354984) shows that if one tries to declare a `FnOnce<(T, U), Output=V>` (which should be a `FnOnce(T, U) -> V`), the error message is quite misleading."},"comment":{"url":"https://api.github.com/repos/rust-lang/rust/issues/comments/125634754","html_url":"https://github.com/rust-lang/rust/issues/26970#issuecomment-125634754","issue_url":"https://api.github.com/repos/rust-lang/rust/issues/26970","id":125634754,"user":{"login":"llogiq","id":4200835,"avatar_url":"https://avatars.githubusercontent.com/u/4200835?v=3","gravatar_id":"","url":"https://api.github.com/users/llogiq","html_url":"https://github.com/llogiq","followers_url":"https://api.github.com/users/llogiq/followers","following_url":"https://api.github.com/users/llogiq/following{/other_user}","gists_url":"https://api.github.com/users/llogiq/gists{/gist_id}","starred_url":"https://api.github.com/users/llogiq/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/llogiq/subscriptions","organizations_url":"https://api.github.com/users/llogiq/orgs","repos_url":"https://api.github.com/users/llogiq/repos","events_url":"https://api.github.com/users/llogiq/events{/privacy}","received_events_url":"https://api.github.com/users/llogiq/received_events","type":"User","site_admin":false},"created_at":"2015-07-28T14:47:15Z","updated_at":"2015-07-28T14:47:15Z","body":"I just \"tested\" the commit (in the sense of reading and understanding it) successfully. :smile: \r\n@GuillaumeGomez Keep up the good work!"}}