diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cecc91a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/rayon-core-1.3.0.crate
diff --git a/rayon-core-1.3.0-fix-metadata.diff b/rayon-core-1.3.0-fix-metadata.diff
new file mode 100644
index 0000000..15f8c6c
--- /dev/null
+++ b/rayon-core-1.3.0-fix-metadata.diff
@@ -0,0 +1,11 @@
+--- rayon-core-1.3.0/Cargo.toml	1970-01-01T01:00:00+01:00
++++ rayon-core-1.3.0/Cargo.toml	2017-11-14T23:22:39.603559+01:00
+@@ -24,7 +24,7 @@
+ license = "Apache-2.0/MIT"
+ repository = "https://github.com/nikomatsakis/rayon"
+ [dependencies.coco]
+-version = "0.1.1"
++version = "0.3"
+ 
+ [dependencies.lazy_static]
+ version = "0.2.2"
diff --git a/rust-rayon-core.spec b/rust-rayon-core.spec
new file mode 100644
index 0000000..6a9a653
--- /dev/null
+++ b/rust-rayon-core.spec
@@ -0,0 +1,70 @@
+# Generated by rust2rpm
+# Tests require #![cfg_attr(test, feature(conservative_impl_trait))]
+%bcond_with check
+%global debug_package %{nil}
+
+%global crate rayon-core
+
+Name:           rust-%{crate}
+Version:        1.3.0
+Release:        1%{?dist}
+Summary:        Core APIs for Rayon
+
+License:        ASL 2.0 or MIT
+URL:            https://crates.io/crates/rayon-core
+Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
+# Initial patched metadata
+# * Bump coco to 0.3, https://github.com/rayon-rs/rayon/pull/471
+Patch0:         rayon-core-1.3.0-fix-metadata.diff
+
+ExclusiveArch:  %{rust_arches}
+
+BuildRequires:  rust-packaging
+# [dependencies]
+BuildRequires:  (crate(coco) >= 0.3.0 with crate(coco) < 0.4.0)
+BuildRequires:  (crate(lazy_static) >= 0.2.2 with crate(lazy_static) < 0.3.0)
+BuildRequires:  (crate(libc) >= 0.2.16 with crate(libc) < 0.3.0)
+BuildRequires:  (crate(num_cpus) >= 1.2.0 with crate(num_cpus) < 2.0.0)
+BuildRequires:  (crate(rand) >= 0.3.0 with crate(rand) < 0.4.0)
+
+%description
+%{summary}.
+
+%package        devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description    devel
+Core APIs for Rayon.
+
+This package contains library source intended for building other packages
+which use %{crate} from crates.io.
+
+%prep
+%autosetup -n %{crate}-%{version} -p1
+%cargo_prep
+
+%build
+%cargo_build
+
+%install
+%cargo_install
+
+%if %{with check}
+%check
+%cargo_test
+%endif
+
+%files          devel
+%license LICENSE-APACHE LICENSE-MIT
+%{cargo_registry}/%{crate}-%{version}/
+
+%changelog
+* Tue Nov 14 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.3.0-1
+- Update to 1.3.0
+
+* Thu Jun 15 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.2.1-1
+- Update to 1.2.1
+
+* Thu Jun 15 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.2.0-1
+- Initial package
diff --git a/sources b/sources
new file mode 100644
index 0000000..1b148f3
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (rayon-core-1.3.0.crate) = 62b890e0505af6464ff76e0d08b885030bf65cca78d79b9ae610503ac3978d58db93b5463ab8d4281dde1b510f4e2f3745e13b381410e29ec81376e34853a28e