From https://github.com/graydon/rust/wiki/language-faq :

    *Have you seen this Google language, Go? How does Rust compare?*

    Yes.

    Rust development was several years underway before Go 
    launched, no direct inspiration.
        Though Pike’s previous languages in the Go family
        (Newsqueak, Alef, Limbo) were influential.

    Go adopted semantics (safety and memory model) that 
    are quite unsatisfactory.
        - Shared mutable state.
        - Global GC.
        - Null pointers.
        - No RAII or destructors.
        - No type-parametric user code.

    There are a number of other fine coroutine / actor
    languages in development presently. It’s an area of
    focus across the PL community.