On 30/08/2019 21.26, Michael Spencer via 

The dependency scanner succeeds and then the compiler sees the code and

   i̴̝̍ĝ̸̠̳͚̻ņ̸̱̗̅́̾̐͠o̶̲̳̫͒͊͊ȑ̵̺̱͚̩͎͌͑͒̕e̸̗̾s̸̮̰̻̥͑̑͊̂̆ ̴̤͍̄ȉ̸̬͝m̵̞͈̿́p̷̢̛̣̹̒̑̽̀ǫ̴̜̖̱̈̏̈͝r̸̨̻̖̪̔̍̾ͅt̵̙̑s̸̩͎̜̼͑́̚ ̵̤̒͑ȩ̶̹̫̥͗̂r̵͍͈̦͗r̵̩̲̊̿͝ǫ̸̞̙́͊͐͗͗r̷̝̥̬̲͇̀͋̚s̷̰̠͙̤̉ͅ due to undefined behavior.

What on Earth happened here?