Error if unable to resolve endpoints.

lib/units/provider/index.js

@@ -81,6 +81,10 @@ module.exports = function(options) {
       })
     })
   })
+  .catch(function(err) {
+    log.fatal('Unable to connect to push endpoint', err)
+    lifecycle.fatal()
+  })
 
   // Input
   var sub = zmq.socket('sub')
@@ -93,6 +97,10 @@ module.exports = function(options) {
       })
     })
   })
+  .catch(function(err) {
+    log.fatal('Unable to connect to sub endpoint', err)
+    lifecycle.fatal()
+  })
 
   // Establish always-on channels
   ;[solo].forEach(function(channel) {