Reserved crate name. Heap cooperation for safe applications & libraries in Rust (initially optimized only on Linux, but available for any target).

coop_heap may become a set of (std/no_std) targets that make heap types co-operate with the allocator.

That goes against existing Rust documentation. (For example, that Vec is and always will be a (pointer, capacity, length) triplet .)

Of course, these custom targets and std library will NOT work with some unsafe crates - but only if those crates make extra & unnecessary assumptions.