[Ygg2]

And from Internals discussion (https://internals.rust-lang.org/t/add-some-form-of-precompil...) it seems this causes more problems than it solves.

It requires huge storage, for each combination of targets, and even if it is was solved some members of Rust community would see it as a step back.

Me included. They are hard to audit and are step back to OSS nature of Rust.

[pjmlp]

A systems programming language is supposed to support all deployment scenarios, not to be religious.

[Ygg2]

Wdym? The language supports it, how else could have serde done it?

The issue here is getting storage and compute for build artifacs for cargo. Cargo isn't the language though.