Ungarble output of ansible command

  I have been trying to use the ansible command and found if there are enough hosts the output is garbled. Which makes it a lot less usable. Since you can't tell what host output came from. 

  I tried various fixes, including locks. I eventually stumbled across this very simple fix of flushing the output buffers.

Example command:
ansible -i inventory \* -m shell -a '/bin/cat /etc/passwd | head -3' -f 100 
    
Garbled output:
hosta.foo.com | success | rc=0 >>
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
    
daemon:x:2:2 ccess | rc=0 >> root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
    
Ungarbled output:
hosta.foo.com | success | rc=0 >>
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
    
hostb.foo.com | success | rc=0 >>
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin