[perl #122983] [BUG] spurt busted in Rakudo

[Carl Mäsak via RT]

<masak> I found the error message that spurt emits. it's in Moar. 
               
https://github.com/MoarVM/MoarVM/blob/256554b8a23cb226e374b4dd57e8af668d2654c1/src/io/syncfile.c#L89
<masak> FROGGS++ has since made that error not happen: 
               
https://github.com/MoarVM/MoarVM/commit/03ac9a70f6dee026ab264767a59ab76379049bee
<masak> so it's possible that the simplest way to unbreak spurt would be to 
make Rakudo depend on a newer Moar.