- [`rustc` will now warn about some incorrect uses of
`mem::{uninitialized, zeroed}` that are known to cause undefined behaviour.][63346]
+Compatibility Notes
+-------------------
+- Unfortunately the [`x86_64-unknown-uefi` platform can not be built][62785]
+ with rustc 1.39.0.
+- The [`armv7-unknown-linux-gnueabihf` platform is also known to have
+ issues][62896] for certain crates such as libc.
+
[60260]: https://github.com/rust-lang/rust/pull/60260/
[61457]: https://github.com/rust-lang/rust/pull/61457/
[61491]: https://github.com/rust-lang/rust/pull/61491/
[62735]: https://github.com/rust-lang/rust/pull/62735/
[62766]: https://github.com/rust-lang/rust/pull/62766/
[62784]: https://github.com/rust-lang/rust/pull/62784/
+[62785]: https://github.com/rust-lang/rust/issues/62785/
[62814]: https://github.com/rust-lang/rust/pull/62814/
+[62896]: https://github.com/rust-lang/rust/issues/62896/
[63000]: https://github.com/rust-lang/rust/pull/63000/
[63056]: https://github.com/rust-lang/rust/pull/63056/
[63107]: https://github.com/rust-lang/rust/pull/63107/