gnu: Add rust-spsc-buffer-0.1.

* gnu/packages/crates-io.scm (rust-spsc-buffer-0.1):
New variable.

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

gnu/packages/crates-io.scm

@@ -12876,6 +12876,29 @@ initializers are available.")
          "07ywqn1vrpi3c43fmvsx7pawk9h3rb77yyqbnhap2micl454kb6f"))))
     (arguments '(#:skip-build? #t))))
 
+(define-public rust-spsc-buffer-0.1
+  (package
+    (name "rust-spsc-buffer")
+    (version "0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "spsc-buffer" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0fsv5zpxkax2n46flxhyajq1yblgh8f33la39gp86hksqcwkyv5y"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-criterion" ,rust-criterion-0.2))))
+    (home-page "https://github.com/davidhewitt/spsc-buffer")
+    (synopsis "Single-producer single-consumer lock-free buffer")
+    (description
+     "This package provides a single-producer single-consumer lock-free buffer.")
+    (license license:expat)))
+
 (define-public rust-stable-deref-trait-1.1
   (package
     (name "rust-stable-deref-trait")