# LC_ALL="C" sudo yum -v install mock

<....>

Downloading packages:
mock-1.1.35-1.fc20.noarch.rpm                                                                                                                         | 213 kB  00:00:00     
Member: mock.noarch 0:1.1.35-1.fc20 - u
Adding Package mock-1.1.35-1.fc20.noarch in mode u
Running transaction check
Transaction check time: 0.021
Running transaction test
Transaction test succeeded
Transaction test time: 0.051
Running transaction
error: %pre(mock-1.1.35-1.fc20.noarch) scriptlet failed, exit status 127
Error in PREIN scriptlet in rpm package mock-1.1.35-1.fc20.noarch
Warning: scriptlet or other non-fatal errors occurred during transaction.
  Verifying  : mock-1.1.35-1.fc20.noarch                                                                                                                                 1/1 
What is this? mock-1.1.35-1.fc20.noarch
VerifyTransaction time: 0.096
Transaction time: 0.554

Failed:
  mock.noarch 0:1.1.35-1.fc20                                                                                                                                                

Complete!


Fedora 20, x86_64