diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 295b9d2696..1f92fa8f15 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -50676,35 +50676,6 @@ way into rayon proper at some point.  In general, if you are not rustc, you
 should be using the real rayon crate, not rustc-rayon.")
     (license (list license:asl2.0 license:expat))))
 
-(define-public rust-rustc-rayon-0.3
-  (package
-    (inherit rust-rustc-rayon-0.4)
-    (name "rust-rustc-rayon")
-    (version "0.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "rustc-rayon" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0fjvy8bf0hd1zq9d3fdxbdp4z4p1k8jfyx51k5qip3wk1pwnf9zk"))))
-    (arguments
-     `(#:tests? #f
-       #:cargo-inputs
-       (("rust-crossbeam-deque" ,rust-crossbeam-deque-0.7)
-        ("rust-either" ,rust-either-1)
-        ("rust-rustc-rayon-core" ,rust-rustc-rayon-core-0.3))
-       #:cargo-development-inputs
-       (("rust-doc-comment" ,rust-doc-comment-0.3)
-        ("rust-docopt" ,rust-docopt-1)
-        ("rust-lazy-static" ,rust-lazy-static-1)
-        ("rust-rand" ,rust-rand-0.6)
-        ("rust-rand-xorshift" ,rust-rand-xorshift-0.1)
-        ("rust-serde" ,rust-serde-1)
-        ("rust-serde-derive" ,rust-serde-derive-1))))))
-
 (define-public rust-rustc-rayon-core-0.4
   (package
     (name "rust-rustc-rayon-core")