This release deprecates the old Serde compiler plugin serde_macros in favor of the Macros 1.1-based implementation serde_derive.
We do not intend to release any further version of serde_macros, not even to fix breakage in future nightly versions. The design of Macros 1.1 is such that we do not expect to see the regular breakage with serde_derive that we used to see with serde_macros, as it depends on a far more limited set of unstable compiler internals.
See https://serde.rs/codegen-nightly.html for steps to set up serde_derive, or https://serde.rs/codegen-hybrid.html for steps to set up a hybrid serde_codegen/serde_derive approach that works on stable.
Old approach
[dependencies]
serde_macros = "0.8"#![feature(plugin, custom_derive)]
#![plugin(serde_macros)]New approach
[dependencies]
serde_derive = "0.8"#![feature(rustc_macro)]
#[macro_use]
extern crate serde_derive;
// everything else is the same