Make sure something appears in the trace file before trying to read it.

src/NzbDrone.Integration.Test/HttpLogFixture.cs

@@ -14,11 +14,13 @@ namespace NzbDrone.Integration.Test
             var config = HostConfig.Get(1);
             config.LogLevel = "Trace";
             HostConfig.Put(config);
+            
+            var resultGet = Series.All();
 
             var logFile = Path.Combine(_runner.AppData, "logs", "sonarr.trace.txt");
             var logLines = File.ReadAllLines(logFile);
 
-            var result = Series.InvalidPost(new Api.Series.SeriesResource());
+            var resultPost = Series.InvalidPost(new Api.Series.SeriesResource());
 
             logLines = File.ReadAllLines(logFile).Skip(logLines.Length).ToArray();