gnu: Add rust-cargo-toml-0.16.

* gnu/packages/crates-io.scm (rust-cargo-toml-0.16): New variable.

Change-Id: I8f98d72d84b18f74a75107ca51c473eb633362df
Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/crates-io.scm

@@ -9262,6 +9262,27 @@ optional dependency graph analysis.")
 supported by Cargo.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-cargo-toml-0.16
+  (package
+    (name "rust-cargo-toml")
+    (version "0.16.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cargo_toml" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1lxgiwha2kqbk60iq5cvczbnd5xrqa4cj7bqk6k8wf64qsdn5yg3"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-serde" ,rust-serde-1)
+                       ("rust-toml" ,rust-toml-0.8))))
+    (home-page "https://lib.rs/cargo_toml")
+    (synopsis "`Cargo.toml` struct definitions for parsing with Serde")
+    (description "This package provides `Cargo.toml` struct definitions for
+parsing with Serde.")
+    (license (list license:asl2.0 license:expat))))
+
 (define-public rust-cargo-util-0.2
   (package
     (name "rust-cargo-util")