Fixed up some errors and do the guid cache fix on the module instead of backend coz that would cause other issues.

src/Lidarr.Api.V3/Indexers/ReleaseModule.cs

@@ -53,7 +53,7 @@ namespace Lidarr.Api.V3.Indexers
 
         private Response DownloadRelease(ReleaseResource release)
         {
-            var remoteAlbum = _remoteAlbumCache.Find(release.Guid);
+            var remoteAlbum = _remoteAlbumCache.Find(GetCacheKey(release));
 
             if (remoteAlbum == null)
             {
@@ -68,7 +68,7 @@ namespace Lidarr.Api.V3.Indexers
             }
             catch (ReleaseDownloadException ex)
             {
-                _logger.ErrorException(ex.Message, ex);
+                _logger.Error(ex, ex.Message);
                 throw new NzbDroneClientException(HttpStatusCode.Conflict, "Getting release from indexer failed");
             }
 
@@ -96,7 +96,7 @@ namespace Lidarr.Api.V3.Indexers
             }
             catch (Exception ex)
             {
-                _logger.ErrorException("Album search failed: " + ex.Message, ex);
+                _logger.Error(ex, "Album search failed: " + ex.Message);
             }
 
             return new List<ReleaseResource>();
@@ -113,8 +113,14 @@ namespace Lidarr.Api.V3.Indexers
 
         protected override ReleaseResource MapDecision(DownloadDecision decision, int initialWeight)
         {
-            _remoteAlbumCache.Set(decision.RemoteAlbum.Release.Guid, decision.RemoteAlbum, TimeSpan.FromMinutes(30));
-           return base.MapDecision(decision, initialWeight);
+            var resource = base.MapDecision(decision, initialWeight);
+            _remoteAlbumCache.Set(GetCacheKey(resource), decision.RemoteAlbum, TimeSpan.FromMinutes(30));
+            return resource;
+        }
+
+        private string GetCacheKey(ReleaseResource resource)
+        {
+            return string.Concat(resource.IndexerId, "_", resource.Guid);
         }
     }
 }

src/NzbDrone.Core.Test/IndexerTests/TorrentRssIndexerTests/TorrentRssSettingsDetectorFixture.cs

@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Moq;
 using NUnit.Framework;
 using NzbDrone.Common.Http;
@@ -253,12 +253,9 @@ namespace NzbDrone.Core.Test.IndexerTests.TorrentRssIndexerTests
             });
         }
 
-        [TestCase("BitMeTv/BitMeTv.xml")]
-        [TestCase("Fanzub/fanzub.xml")]
         [TestCase("IPTorrents/IPTorrents.xml")]
         [TestCase("Newznab/newznab_nzb_su.xml")]
         [TestCase("Nyaa/Nyaa.xml")]
-        [TestCase("Omgwtfnzbs/Omgwtfnzbs.xml")]
         [TestCase("Torznab/torznab_hdaccess_net.xml")]
         [TestCase("Torznab/torznab_tpb.xml")]
         public void should_detect_recent_feed(string rssXmlFile)