tr: Illegal byte sequence

Thread 1 (process 13721):
#0  0x00007fff93a5d168 in wait4 ()
#1  0x00007fff8c0715f5 in system ()
#2  0x000000010412c9a9 in TUnixSystem::StackTrace ()
#3  0x00000001087bf10b in FairLogger::Fatal (this=0x359c, file=0x0, line=0x7fff63c21598 "