diff -ru work.orig/Mojolicious-6.12/lib/Mojo/UserAgent.pm work/Mojolicious-6.12/lib/Mojo/UserAgent.pm
--- work.orig/Mojolicious-6.12/lib/Mojo/UserAgent.pm	2015-06-10 10:14:05.000000000 -0400
+++ work/Mojolicious-6.12/lib/Mojo/UserAgent.pm	2015-07-07 15:05:31.000000000 -0400
@@ -76,7 +76,7 @@
   $self->_finish($_, 1) for keys %{$self->{connections} || {}};
 
   # Clean up keep-alive connections
-  my $loop = $self->_loop(0);
+  my $loop = $self->_loop(0) or return;
   $loop->remove($_->[1]) for @{delete $self->{queue} || []};
   $loop = $self->_loop(1);
   $loop->remove($_->[1]) for @{delete $self->{nb_queue} || []};