The Rust stdlib has added those functions that return errors, and the types are parameterized by the allocator trait. The trait is coming to stable in the next release!

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smj-edison 10 hours ago | parent [-]

Oh that's exciting! I knew about the allocator work, but I hadn't heard about error reporting for failed allocations, or that it was about to be stabilized.

	▲	steveklabnik 9 hours ago \| parent [-]
		To be specific, I’m talking about try_ variants of functions that allocate and return Result. I’m not sure when those are becoming stable, but Rust for Linux has been driving a bunch of this work, in my understanding, so that’s helped a lot.