{"action":"created","issue":{"url":"https://api.github.com/repos/rust-lang/rust/issues/30300","labels_url":"https://api.github.com/repos/rust-lang/rust/issues/30300/labels{/name}","comments_url":"https://api.github.com/repos/rust-lang/rust/issues/30300/comments","events_url":"https://api.github.com/repos/rust-lang/rust/issues/30300/events","html_url":"https://github.com/rust-lang/rust/pull/30300","id":121501457,"number":30300,"title":"Move built-in syntax extensions to a separate crate","user":{"login":"sanxiyn","id":45249,"avatar_url":"https://avatars.githubusercontent.com/u/45249?v=3","gravatar_id":"","url":"https://api.github.com/users/sanxiyn","html_url":"https://github.com/sanxiyn","followers_url":"https://api.github.com/users/sanxiyn/followers","following_url":"https://api.github.com/users/sanxiyn/following{/other_user}","gists_url":"https://api.github.com/users/sanxiyn/gists{/gist_id}","starred_url":"https://api.github.com/users/sanxiyn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sanxiyn/subscriptions","organizations_url":"https://api.github.com/users/sanxiyn/orgs","repos_url":"https://api.github.com/users/sanxiyn/repos","events_url":"https://api.github.com/users/sanxiyn/events{/privacy}","received_events_url":"https://api.github.com/users/sanxiyn/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"nikomatsakis","id":155238,"avatar_url":"https://avatars.githubusercontent.com/u/155238?v=3","gravatar_id":"","url":"https://api.github.com/users/nikomatsakis","html_url":"https://github.com/nikomatsakis","followers_url":"https://api.github.com/users/nikomatsakis/followers","following_url":"https://api.github.com/users/nikomatsakis/following{/other_user}","gists_url":"https://api.github.com/users/nikomatsakis/gists{/gist_id}","starred_url":"https://api.github.com/users/nikomatsakis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nikomatsakis/subscriptions","organizations_url":"https://api.github.com/users/nikomatsakis/orgs","repos_url":"https://api.github.com/users/nikomatsakis/repos","events_url":"https://api.github.com/users/nikomatsakis/events{/privacy}","received_events_url":"https://api.github.com/users/nikomatsakis/received_events","type":"User","site_admin":false},"milestone":null,"comments":6,"created_at":"2015-12-10T14:44:33Z","updated_at":"2015-12-15T16:48:57Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/rust-lang/rust/pulls/30300","html_url":"https://github.com/rust-lang/rust/pull/30300","diff_url":"https://github.com/rust-lang/rust/pull/30300.diff","patch_url":"https://github.com/rust-lang/rust/pull/30300.patch"},"body":"This reduces iteration time (`make rustc-stage1`) for moved syntax extensions from 11 minutes to 3 minutes on my machine.\r\n\r\nBecause of the signature change, this is a [breaking-change] for people directly calling `expand_crate`. I think it is rare: from GitHub search, only case I found is [glassful](https://github.com/kmcallister/glassful)."},"comment":{"url":"https://api.github.com/repos/rust-lang/rust/issues/comments/164824038","html_url":"https://github.com/rust-lang/rust/pull/30300#issuecomment-164824038","issue_url":"https://api.github.com/repos/rust-lang/rust/issues/30300","id":164824038,"user":{"login":"nikomatsakis","id":155238,"avatar_url":"https://avatars.githubusercontent.com/u/155238?v=3","gravatar_id":"","url":"https://api.github.com/users/nikomatsakis","html_url":"https://github.com/nikomatsakis","followers_url":"https://api.github.com/users/nikomatsakis/followers","following_url":"https://api.github.com/users/nikomatsakis/following{/other_user}","gists_url":"https://api.github.com/users/nikomatsakis/gists{/gist_id}","starred_url":"https://api.github.com/users/nikomatsakis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nikomatsakis/subscriptions","organizations_url":"https://api.github.com/users/nikomatsakis/orgs","repos_url":"https://api.github.com/users/nikomatsakis/repos","events_url":"https://api.github.com/users/nikomatsakis/events{/privacy}","received_events_url":"https://api.github.com/users/nikomatsakis/received_events","type":"User","site_admin":false},"created_at":"2015-12-15T16:48:57Z","updated_at":"2015-12-15T16:48:57Z","body":"@bors r+"}}