1.26 Release notes document unstable nightly cargo feature

[ehuss]

The release notes for 1.26 mention Cargo.lock files are now included in published crates. but that is a nightly-only unstable feature. Was that intentional?

[est31]

cc @Aaronepower

[XAMPPRocky]

Yes this seems unintentional, which is odd since it was marked relnotes and unstable features tend not to get that tag. cc @rust-lang/cargo would anyone be able to clarify cargo/5093?

[alexcrichton]

rust-lang/cargo#5093 was initially intended for stable but through testing we ended up realizing it would be a breaking change and is not always desirable. Instead of stabilizing it rust-lang/cargo#5093 was landed as a nightly feature, guarded by cargo-features = ["publish-lockfile"] in the manifest