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Update RELEASES.md

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RELEASES.md
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@ -29,23 +29,22 @@ Cargo
`--locked` to disable this behaviour.
- [`cargo-install` will now ignore the target triple specified in a project
directory's `.cargo/config`.][cargo/5606]
- [`cargo-install` will now allow you to cross compile an install
using `--target`][cargo/5614]
- [Added the `cargo-fix` to automatically move project code from 2015 edition
to 2018.][cargo/5723]
- [Added the `cargo-fix` subcommand to automatically move project code from
2015 edition to 2018.][cargo/5723]
Misc
----
- [`rustdoc` now has the `--cap-lints` which allows you to set what level of
lint will cause and compilation failure.][52354]
- [`rustc` and `rustdoc` will now have the exit code of one if compilation
fails, and 101 if there is a panic.][52197]
- [`rustdoc` now has the `--cap-lints` option which demotes all lints above
the specified level to that level.][52354] For example `--cap-lints warn`
will demote `deny` and `forbid` lints to `warn`.
- [`rustc` and `rustdoc` will now have the exit code of `1` if compilation
fails, and `101` if there is a panic.][52197]
Compatibility Notes
-------------------
- [`str::{slice_unchecked, slice_unchecked_mut}` are now deprecated.][51807]
Use `str::get_unchecked(begin..end)` instead.
- [`std::env::home_dir` is now deprecated for it's unintuitive behaviour.][51656]
- [`std::env::home_dir` is now deprecated for its unintuitive behaviour.][51656]
Consider using the `home_dir` function from
https://crates.io/crates/dirs instead.
- [`rustc` will no longer silently ignore invalid data in target spec.][52330]
@ -67,7 +66,6 @@ Compatibility Notes
[51178]: https://github.com/rust-lang/rust/pull/51178/
[50494]: https://github.com/rust-lang/rust/pull/50494/
[cargo/5606]: https://github.com/rust-lang/cargo/pull/5606/
[cargo/5614]: https://github.com/rust-lang/cargo/pull/5614/
[cargo/5723]: https://github.com/rust-lang/cargo/pull/5723/
[cargo/5831]: https://github.com/rust-lang/cargo/pull/5831/
[`Arc::downcast`]: https://doc.rust-lang.org/std/sync/struct.Arc.html#method.downcast