{"action":"created","issue":{"url":"https://api.github.com/repos/aspnet/AspNetCore/issues/5700","repository_url":"https://api.github.com/repos/aspnet/AspNetCore","labels_url":"https://api.github.com/repos/aspnet/AspNetCore/issues/5700/labels{/name}","comments_url":"https://api.github.com/repos/aspnet/AspNetCore/issues/5700/comments","events_url":"https://api.github.com/repos/aspnet/AspNetCore/issues/5700/events","html_url":"https://github.com/aspnet/AspNetCore/issues/5700","id":392268827,"node_id":"MDU6SXNzdWUzOTIyNjg4Mjc=","number":5700,"title":".NET Core 3.0 Preview 1 makes app fail to start","user":{"login":"Eilon","id":202643,"node_id":"MDQ6VXNlcjIwMjY0Mw==","avatar_url":"https://avatars3.githubusercontent.com/u/202643?v=4","gravatar_id":"","url":"https://api.github.com/users/Eilon","html_url":"https://github.com/Eilon","followers_url":"https://api.github.com/users/Eilon/followers","following_url":"https://api.github.com/users/Eilon/following{/other_user}","gists_url":"https://api.github.com/users/Eilon/gists{/gist_id}","starred_url":"https://api.github.com/users/Eilon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Eilon/subscriptions","organizations_url":"https://api.github.com/users/Eilon/orgs","repos_url":"https://api.github.com/users/Eilon/repos","events_url":"https://api.github.com/users/Eilon/events{/privacy}","received_events_url":"https://api.github.com/users/Eilon/received_events","type":"User","site_admin":false},"labels":[{"id":1118663032,"node_id":"MDU6TGFiZWwxMTE4NjYzMDMy","url":"https://api.github.com/repos/aspnet/AspNetCore/labels/area-security","name":"area-security","color":"5319e7","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-12-18T17:54:14Z","updated_at":"2018-12-18T17:54:40Z","closed_at":null,"author_association":"MEMBER","body":"_From @godrose on Tuesday, 18 December 2018 06:44:00_\r\n\r\n# Issue Title\r\n\r\nUsing latest version of .NET Core 3.0.0 SDK (009812) introduces regression into an existing app\r\n\r\n# General\r\n\r\nUpgrading to the preview version and using it instead of 2.2.0 results in the following exception during app start:\r\n```\r\nApplication startup exception: System.InvalidOperationException: Scheme already exists: ASOS\r\n   at Microsoft.AspNetCore.Authentication.AuthenticationOptions.AddScheme(String name, Action1 configureBuilder)\r\n   at Microsoft.Extensions.Options.OptionsFactory1.Create(String name)\r\n   at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode)\r\n   at System.Lazy1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)\r\n   at System.Lazy1.CreateValue()\r\n   at Microsoft.AspNetCore.Authentication.AuthenticationSchemeProvider..ctor(IOptions1 options, IDictionary2 schemes)\r\n```\r\n\r\n_Copied from original issue: dotnet/core#2160_"},"comment":{"url":"https://api.github.com/repos/aspnet/AspNetCore/issues/comments/448310836","html_url":"https://github.com/aspnet/AspNetCore/issues/5700#issuecomment-448310836","issue_url":"https://api.github.com/repos/aspnet/AspNetCore/issues/5700","id":448310836,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0ODMxMDgzNg==","user":{"login":"Eilon","id":202643,"node_id":"MDQ6VXNlcjIwMjY0Mw==","avatar_url":"https://avatars3.githubusercontent.com/u/202643?v=4","gravatar_id":"","url":"https://api.github.com/users/Eilon","html_url":"https://github.com/Eilon","followers_url":"https://api.github.com/users/Eilon/followers","following_url":"https://api.github.com/users/Eilon/following{/other_user}","gists_url":"https://api.github.com/users/Eilon/gists{/gist_id}","starred_url":"https://api.github.com/users/Eilon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Eilon/subscriptions","organizations_url":"https://api.github.com/users/Eilon/orgs","repos_url":"https://api.github.com/users/Eilon/repos","events_url":"https://api.github.com/users/Eilon/events{/privacy}","received_events_url":"https://api.github.com/users/Eilon/received_events","type":"User","site_admin":false},"created_at":"2018-12-18T17:54:40Z","updated_at":"2018-12-18T17:54:40Z","author_association":"MEMBER","body":"@HaoK - any idea on this?"}}
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