gnu: Remove rust-exitfailure-0.5.

* gnu/packages/crates-io.scm (rust-exitfailure-0.5): Delete variable.

Change-Id: I20567fa58a28d3ee6c961ba81c6dac36b3212bd1

gnu/packages/crates-io.scm

@@ -25353,35 +25353,6 @@ (define-public rust-exitcode-1
 by @file{sysexits.h}.")
     (license license:asl2.0)))
 
-(define-public rust-exitfailure-0.5
-  (package
-    (name "rust-exitfailure")
-    (version "0.5.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "exitfailure" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0585wix3b3pjjj90fkqj9x4ar46d24x82k8rdin3czzk5a1vvx9g"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-failure" ,rust-failure-0.1))
-       #:cargo-development-inputs
-       (("rust-assert-cmd" ,rust-assert-cmd-0.9)
-        ("rust-predicates" ,rust-predicates-0.9))
-       ;; Tests fail with "No such file or directory".
-       #:tests? #f))
-    (home-page "https://github.com/tismith/exitfailure")
-    (synopsis "Provide @code{newtype} wrappers for using @code{?} in @code{main}")
-    (description
-     "This package provides a basic @code{newtype} wrappers to help with using
-@code{?} in @code{main}.")
-    (license (list license:expat license:asl2.0))))
-
 (define-public rust-expat-sys-2
   (package
     (name "rust-expat-sys")