Attempt at fixing issue yegor256#576.

src/main/resources/com/rultor/agents/req/_head.sh

@@ -68,7 +68,7 @@ echo "${scripts[@]}" >> script.sh
 
 function docker_when_possible {
   while true; do
-    load=$(uptime | awk '{print $12}' | cut -d ',' -f 1)
+    load=$(uptime | sed 's/ /\n/g' | tail -n 1)
     if [ `echo $load \> 30 | bc` -eq 1 ]; then
       echo "load average is ${load}, too high to run a new Docker container"
       echo "I will try again in 15 seconds"