Tracking Issue for `-Zno-embed-metadata`

[Kobzol]

Summary

Implementation: #15378
Documentation: https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#no-embed-metadata

The -Zno-embed-metadata flag tells Cargo to pass -Zembed-metadata=no to rustc, which saves disk space in the target directory, by avoiding generating duplicated metadata.

Unresolved Issues

• Is this a breaking change? Since rlibs/dylibs will not contain metadata after this change, it could break some users who depended on this.

Future Extensions

No response

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