Adopt to new macro

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

rust-heapsize.spec

@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        0.4.2
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Infrastructure for measuring the total runtime size of an object on the heap
 
 License:        MIT or ASL 2.0
@@ -45,7 +45,7 @@ which use %{crate} from crates.io.
 
 %if %{with check}
 %check
-%cargo_test --features flexible-tests
+%cargo_test -f flexible-tests
 %endif
 
 %files          devel
@@ -55,6 +55,9 @@ which use %{crate} from crates.io.
 %exclude %{cargo_registry}/%{crate}-%{version}/appveyor.yml
 
 %changelog
+* Sat Jun 23 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.4.2-3
+- Adopt to new macro
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0.4.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild