-- [`Ipv4::from_str` will now reject octal format IP addresses.][83652] The octal format
- can lead to confusion and potential security vulnerabilities and [is no longer recommended][ietf6943].
-
+- [`Ipv4::from_str` will now reject octal format IP addresses in addition
+ to rejecting hexadecimal IP addresses.][83652] The octal format can lead
+ to confusion and potential security vulnerabilities and [is no
+ longer recommended][ietf6943].
+- [The added `BITS` constant may conflict with external definitions.][85667]
+ In particular, this was known to be a problem in the `lexical-core` crate,
+ but they have published fixes for semantic versions 0.4 through 0.7. To
+ update this dependency alone, use `cargo update -p lexical-core`.
+- Incremental compilation remains off by default, unless one uses the `RUSTC_FORCE_INCREMENTAL=1` environment variable added in 1.52.1.