gnu: Add rust-ntest-timeout-0.8.

* gnu/packages/crates-io.scm (rust-ntest-timeout-0.8): New variable.
(rust-ntest-timeout-0.3): Inherit from rust-ntest-timeout-0.8.

gnu/packages/crates-io.scm

@@ -37943,8 +37943,34 @@ enhances the built-in library with some useful features.")
         ("rust-quote" ,rust-quote-1)
         ("rust-syn" ,rust-syn-1))))))
 
+(define-public rust-ntest-timeout-0.8
+  (package
+    (name "rust-ntest-timeout")
+    (version "0.8.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "ntest_timeout" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "01vcdlz9xj471z5knk2qynm7adz3p614glf6n0pgn161qynym9mw"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-ntest-proc-macro-helper" ,rust-ntest-proc-macro-helper-0.8)
+        ("rust-proc-macro-crate" ,rust-proc-macro-crate-1)
+        ("rust-proc-macro2" ,rust-proc-macro2-1)
+        ("rust-quote" ,rust-quote-1)
+        ("rust-syn" ,rust-syn-1))))
+    (home-page "https://github.com/becheran/ntest")
+    (synopsis "Timeout attribute for the ntest framework")
+    (description "This package provides a timeout attribute for the ntest
+framework.")
+    (license license:expat)))
+
 (define-public rust-ntest-timeout-0.3
   (package
+    (inherit rust-ntest-timeout-0.8)
     (name "rust-ntest-timeout")
     (version "0.3.3")
     (source
@@ -37955,18 +37981,12 @@ enhances the built-in library with some useful features.")
        (sha256
         (base32
          "0klryn3rgjxnq3cv6j8bwcsr0b7zw3x216h63144v22aja18p0g0"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs
        (("rust-proc-macro2" ,rust-proc-macro2-1)
         ("rust-quote" ,rust-quote-1)
         ("rust-syn" ,rust-syn-1)
-        ("rust-timebomb" ,rust-timebomb-0.1))))
+        ("rust-timebomb" ,rust-timebomb-0.1))))))
-    (home-page "https://github.com/becheran/ntest")
-    (synopsis "Timeout attribute for the ntest framework")
-    (description "This package provides a timeout attribute for the ntest
-framework.")
-    (license license:expat)))
 
 (define-public rust-num-0.4
   (package