Replace panics with our logging framework

core/chat/utils.go

@@ -1,11 +1,14 @@
 package chat
 
-import "syscall"
+import (
+	"syscall"
+	log "github.com/sirupsen/logrus"
+)
 
 func getMaximumConcurrentConnectionLimit() int64 {
 	var rLimit syscall.Rlimit
 	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit); err != nil {
-		panic(err)
+		log.Fatalln(err)
 	}
 
 	// Return the limit to 70% of max so the machine doesn't die even if it's maxed out for some reason.