Rust 1.0 was explicitly intended to be a Minimum Viable Product, containing only the work they felt they couldn't revise later without breaking their API stabil

Rust 1.0 was explicitly intended to be a Minimum Viable Product, containing only the work they felt they couldn't revise later without breaking their API stability promise. As such, they started with the versions of allocating APIs that are most commonly desired... the ones equivalent to how array[index] will either get what you want or panic if you're out of bounds. The try_ allocation APIs which are equivalent to .get on a container then came later. A web browser, while a good program to stress the capabilities of a language's design to make sure it can meet demand, is not a typical program.