Add experiment to produce precompiled builds of serde_derive

precompiled/x86_64-unknown-linux-gnu/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "serde_derive-x86_64-unknown-linux-gnu"
+version = "1.0.171-alpha.0"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+categories = ["no-std", "no-std::no-alloc"]
+description = "Precompiled implementation of #[derive(Serialize, Deserialize)]"
+documentation = "https://serde.rs/derive.html"
+edition = "2015"
+homepage = "https://serde.rs"
+include = ["serde_derive", "src"]
+keywords = ["serde", "serialization", "no_std", "derive"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/serde-rs/serde"
+
+[lib]
+name = "serde_derive"
+proc-macro = true
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[workspace]