1 Invalid free() / delete / delete[] / realloc()
2 at 0x........: free (vg_replace_malloc.c:...)
3 by 0x........: <rustc_middle::ty::PredicateKind as rustc_middle::ty::fold::TypeFoldable>::fold_with::<rustc_infer::infer::resolve::OpportunisticVarResolver> (demangle-rust.c:13)
4 by 0x........: rustc_expand::mbe::macro_parser::parse_tt (demangle-rust.c:20)
5 by 0x........: core::str::lossy::Utf8Lossy::from_bytes (demangle-rust.c:26)
6 by 0x........: main (demangle-rust.c:31)
7 Address 0x........ is 0 bytes inside a block of size 4 free'd
8 at 0x........: free (vg_replace_malloc.c:...)
9 by 0x........: <rustc_middle::ty::PredicateKind as rustc_middle::ty::fold::TypeFoldable>::fold_with::<rustc_infer::infer::resolve::OpportunisticVarResolver> (demangle-rust.c:12)
10 by 0x........: rustc_expand::mbe::macro_parser::parse_tt (demangle-rust.c:20)
11 by 0x........: core::str::lossy::Utf8Lossy::from_bytes (demangle-rust.c:26)
12 by 0x........: main (demangle-rust.c:31)
14 at 0x........: malloc (vg_replace_malloc.c:...)
15 by 0x........: main (demangle-rust.c:31)