std.format doesn't want to work

[solidstate1991]

On Sunday, 17 October 2021 at 13:03:46 UTC, jfondren wrote:
> then it's likely that some memory corruption prior to format() 
> has broken the GC, and format's allocation of a string is 
> what's failing. Try sprinkling `@safe` and and see what it 
> complains about; try valgrind; try reducing your problem. I 
> don't think we can help you more without a way to replicate the 
> fault.

I ran Valgrind, and I've noticed some possible leakage in a 
library I've written, but I'll check for it further once I'll 
have a bit more time.