Fix skip_build

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

rust-memchr.spec

@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        2.2.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Safe interface to memchr
 
 # Upstream license specification: Unlicense/MIT
@@ -20,9 +20,11 @@ BuildArch:      noarch
 %endif
 
 BuildRequires:  rust-packaging
+%if ! %{__cargo_skip_build}
 %if %{with check}
 BuildRequires:  (crate(quickcheck) >= 0.8.0 with crate(quickcheck) < 0.9.0)
 %endif
+%endif
 
 %global _description %{expand:
 Safe interface to memchr.}
@@ -95,6 +97,9 @@ which use "use_std" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sun Jun 09 12:27:43 CEST 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 2.2.0-4
+- Fix skip_build
+
 * Sun Jun 09 10:20:13 CEST 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 2.2.0-3
 - Regenerate