In 24765, we said that we supported rust stable in CodingStandardsRust.md.
But we left GettingStartedRust.md saying that we support rust nightly.
Closes 27160.
Strive to change the C API as little as possible.
-We are currently targetting Rust nightly, *for now*. We expect this to change
-moving forward, as we understand more about which nightly features we need. It
-is on our TODO list to try to cultivate good standing with various distro
+We are currently targetting Rust stable. (See CodingStandardsRust.md for more
+details.)
+
+It is on our TODO list to try to cultivate good standing with various distro
maintainers of `rustc` and `cargo`, in order to ensure that whatever version we
solidify on is readily available.