[gnulinux]

REPL stands for read eval print loop. Being "compiled" is not a property of the language, but a property of the implementation. You can provide a "compiler" for python or "interpreter" for C. In Rust's case "eval" part of REPL would do compile->run. Note that even "interpreted" languages such as python are internally compiled (but this is not the output), e.g. cpython compiles python to python-byte-code, and then executes.

[FunnyLookinHat]

Aha that's a good way of putting it - thanks! I guess my experience with Go and C has made me only expect REPLs with dynamic languages that use VMs. Some of the other comments also noted that Haskell and Erlang are compiled but also provide REPLs.