Indeed. The other day I was messing around with making various associative data structures in Zig.

I stole someone else's benchmark to use, and at one point I ran into seriously buggy behavior on strings (but not integers) that wasn't caught at the point where it happened early even with -Odebug.

Turns out the benchmark was freeing the strings before it finished performing all of the operations on the data structure. That's the sort of thing that Rust makes nearly impossible, but Zig didn't catch at all.