diff --git a/.travis.yml b/.travis.yml
index 2bd5168..5b25b5f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,11 +3,15 @@ os:
  - linux
 language: d
 d:
+ - dmd-nightly
  - dmd-beta
  - dmd
+ - ldc-beta
  - ldc
 
 matrix:
+  allow_failures:
+    - d: ldc
   include:
     - d: dmd-2.070.2 # the deployment compiler
       env: COVERAGE=true
diff --git a/dub.sdl b/dub.sdl
index 705165b..d2207d0 100644
--- a/dub.sdl
+++ b/dub.sdl
@@ -4,7 +4,7 @@ copyright "Copyright © 2015, Martin Nowak"
 authors "Martin Nowak"
 dependency "vibe-d" version="~>0.7.30"
 configuration "default" {
-	versions "VibeDefaultMain"
+	versions "VibeCustomMain"
 	targetType "executable"
 }
 configuration "unittest" {
diff --git a/source/dlangbot/app.d b/source/dlangbot/app.d
index fcd892d..f12cb40 100644
--- a/source/dlangbot/app.d
+++ b/source/dlangbot/app.d
@@ -7,10 +7,10 @@ public import dlangbot.bugzilla : bugzillaURL;
 public import dlangbot.github   : githubAPIURL, githubAuth, hookSecret;
 public import dlangbot.trello   : trelloAPIURL, trelloAuth, trelloSecret;
 
-string cronDailySecret;
-
 import std.datetime : Clock, days, Duration, minutes, seconds, SysTime;
 
+import vibe.core.args;
+import vibe.core.core;
 import vibe.core.log;
 import vibe.data.json;
 import vibe.http.client : HTTPClient;
@@ -29,32 +29,6 @@ Duration prInactivityDur = 90.days; // PRs with no activity within X days will g
 
 enum trelloHookURL = "https://dlang-bot.herokuapp.com/trello_hook";
 
-version(unittest){} else
-shared static this()
-{
-    import std.process : environment;
-    import vibe.core.args : readOption;
-
-    auto settings = new HTTPServerSettings;
-    settings.port = 8080;
-    readOption("port|p", &settings.port, "Sets the port used for serving.");
-    startServer(settings);
-
-    githubAuth = "token "~environment["GH_TOKEN"];
-    trelloSecret = environment["TRELLO_SECRET"];
-    trelloAuth = "key="~environment["TRELLO_KEY"]~"&token="~environment["TRELLO_TOKEN"];
-    hookSecret = environment["GH_HOOK_SECRET"];
-    cronDailySecret = environment["CRON_DAILY_SECRET"];
-
-    // workaround for stupid openssl.conf on Heroku
-    if (environment.get("DYNO") !is null)
-    {
-        HTTPClient.setTLSSetupCallback((ctx) {
-            ctx.useTrustedCertificateFile("/etc/ssl/certs/ca-certificates.crt");
-        });
-    }
-}
-
 void startServer(HTTPServerSettings settings)
 {
     import vibe.core.core : vibeVersionString;
@@ -71,7 +45,6 @@ void startServer(HTTPServerSettings settings)
         .post("/github_hook", &githubHook)
         .match(HTTPMethod.HEAD, "/trello_hook", (req, res) => res.writeVoidBody)
         .post("/trello_hook", &trelloHook)
-        .get("/cron_daily", &cronDaily)
         ;
 
     HTTPClient.setUserAgentString("dlang-bot vibe.d/"~vibeVersionString);
@@ -152,19 +125,13 @@ void githubHook(HTTPServerRequest req, HTTPServerResponse res)
 
 //==============================================================================
 
-void cronDaily(HTTPServerRequest req, HTTPServerResponse res)
+void cronDaily()
 {
-    enforceBadRequest(req.query.length > 0, "No repo slugs provided");
-    enforceHTTP(req.query.get("secret") == cronDailySecret,
-                HTTPStatus.unauthorized, "Invalid or no secret provided");
-
-    foreach (ref slug; req.query.getAll("repo"))
+    foreach (repo; ["dlang/phobos"])
     {
-        logInfo("running cron.daily for: %s", slug);
-        runTaskHelper(&searchForInactivePrs, slug, prInactivityDur);
+        logInfo("running cron.daily for: %s", repo);
+        searchForInactivePrs(repo, prInactivityDur);
     }
-
-    return res.writeBody("OK");
 }
 
 //==============================================================================
@@ -213,3 +180,39 @@ void handlePR(string action, PullRequest* _pr)
     if (runTrello)
         updateTrelloCard(action, pr.htmlURL, refs, descs);
 }
+
+//==============================================================================
+
+version (unittest) {}
+else void main(string[] args)
+{
+    import std.process : environment;
+    import vibe.core.args : readOption;
+
+    githubAuth = "token "~environment["GH_TOKEN"];
+    trelloSecret = environment["TRELLO_SECRET"];
+    trelloAuth = "key="~environment["TRELLO_KEY"]~"&token="~environment["TRELLO_TOKEN"];
+    hookSecret = environment["GH_HOOK_SECRET"];
+
+    // workaround for stupid openssl.conf on Heroku
+    if (environment.get("DYNO") !is null)
+    {
+        HTTPClient.setTLSSetupCallback((ctx) {
+            ctx.useTrustedCertificateFile("/etc/ssl/certs/ca-certificates.crt");
+        });
+    }
+
+    bool runDailyCron;
+    auto settings = new HTTPServerSettings;
+    settings.port = 8080;
+    readOption("port|p", &settings.port, "Sets the port used for serving.");
+    readOption("cron-daily", &runDailyCron, "Run daily cron tasks.");
+    if (!finalizeCommandLineOptions())
+        return;
+    if (runDailyCron)
+        return cronDaily();
+
+    startServer(settings);
+    lowerPrivileges();
+    runEventLoop();
+}
diff --git a/source/dlangbot/github.d b/source/dlangbot/github.d
index 274294d..e2f554d 100644
--- a/source/dlangbot/github.d
+++ b/source/dlangbot/github.d
@@ -420,7 +420,7 @@ struct PullRequest
     }
     Branch base, head;
     enum State { open, closed }
-    enum MergeableState { clean, dirty, unstable, unknown }
+    enum MergeableState { clean, dirty, unstable, blocked, unknown }
     @byName State state;
     uint number;
     string title;
diff --git a/test/cronjob.d b/test/cronjob.d
index d94dfab..2bea385 100644
--- a/test/cronjob.d
+++ b/test/cronjob.d
@@ -47,5 +47,6 @@ unittest
         },
     );
 
-    openUrl("/cron_daily?repo=dlang/phobos&secret=" ~ cronDailySecret, "OK");
+    import dlangbot.app : cronDaily;
+    cronDaily();
 }
diff --git a/test/utils.d b/test/utils.d
index 6e3bb65..753f3c1 100644
--- a/test/utils.d
+++ b/test/utils.d
@@ -29,7 +29,6 @@ shared static this()
     githubAuth = "GH_DUMMY_AUTH_TOKEN";
     hookSecret = "GH_DUMMY_HOOK_SECRET";
     trelloAuth = "key=01234&token=abcde";
-    cronDailySecret = "dummyCronSecret";
 
     // start our hook server
     auto settings = new HTTPServerSettings;
@@ -124,9 +123,12 @@ auto payloadServer(scope HTTPServerRequest req, scope HTTPServerResponse res)
             if (expectation.jsonHandler !is null)
                 expectation.jsonHandler(payloadJson);
 
-            payload = payloadJson.toString;
+            return res.writeJsonBody(payloadJson);
+        }
+        else
+        {
+            return res.writeBody(payload);
         }
-        return res.writeBody(payload);
     }
 }
 
@@ -168,18 +170,19 @@ struct APIExpectation
     }
 }
 
-APIExpectation[] apiExpectations;
+__gshared APIExpectation[] apiExpectations;
 
 void setAPIExpectations(Args...)(Args args)
 {
     import std.functional : toDelegate;
     import std.traits :  Parameters;
+    synchronized {
     apiExpectations.length = 0;
     foreach (i, arg; args)
     {
         static if (is(Args[i] : string))
         {
-            apiExpectations ~= APIExpectation(arg);
+                apiExpectations ~= APIExpectation(arg);
         }
         else
         {
@@ -200,6 +203,7 @@ void setAPIExpectations(Args...)(Args args)
                    apiExpectations[$ - 1].reqHandler is null, "Either provide a reqHandler or a jsonHandler");
         }
     }
+    }
 }
 
 void postGitHubHook(string payload, string eventType = "pull_request",