http: added catch-all exception handler to show errors in logs.

vcsserver/http_main.py

@@ -207,6 +207,10 b' class HTTPApplication(object):'
             self.handle_vcs_exception, context=Exception,
             custom_predicates=[self.is_vcs_exception])
 
+        self.config.add_view(
+            self.general_error_handler, context=Exception)
+
+
     def wsgi_app(self):
         return self.config.make_wsgi_app()
 
@@ -359,6 +363,12 b' class HTTPApplication(object):'
         # Re-raise exception if we can not handle it.
         raise exception
 
+    def general_error_handler(self, exception, request):
+        log.exception(
+            'error occurred handling this request for path: %s',
+            request.path)
+        raise exception
+
 
 class ResponseFilter(object):