diff --git a/.gitignore b/.gitignore
index e280255..fa551de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /fragile-0.3.0.crate
 /fragile-1.0.0.crate
 /fragile-1.1.0.crate
+/fragile-1.2.0.crate
diff --git a/rust-fragile.spec b/rust-fragile.spec
index 51e04de..83a0cdc 100644
--- a/rust-fragile.spec
+++ b/rust-fragile.spec
@@ -1,11 +1,11 @@
-# Generated by rust2rpm 20
+# Generated by rust2rpm 21
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate fragile
 
 Name:           rust-%{crate}
-Version:        1.1.0
+Version:        1.2.0
 Release:        %autorelease
 Summary:        Provides wrapper types for sending non-send values to other threads
 
@@ -16,7 +16,7 @@ Source:         %{crates_source}
 
 ExclusiveArch:  %{rust_arches}
 
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Provides wrapper types for sending non-send values to other threads.}
@@ -33,9 +33,10 @@ This package contains library source intended for building other packages which
 use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE
-%doc README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE
+%doc %{crate_instdir}/CHANGELOG.md
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -47,7 +48,19 @@ This package contains library source intended for building other packages which
 use the "default" feature of the "%{crate}" crate.
 
 %files       -n %{name}+default-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
+
+%package     -n %{name}+slab-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+slab-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "slab" feature of the "%{crate}" crate.
+
+%files       -n %{name}+slab-devel
+%ghost %{crate_instdir}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
diff --git a/sources b/sources
index 6052f2b..a5df1b4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (fragile-1.1.0.crate) = dbb835aa85fa7153d284e2c3319aef639b62529b5d622a671bf9c8816048f2f44b143ec1e329b681fb850a00d6c2a296da3a44128db02b0d9422e66d6658637a
+SHA512 (fragile-1.2.0.crate) = 2cc20896a2a8cc5225fbf796d4b1cd4b81529ce7c86aab52b91037248dab21161defebe9a26b6f55df3f76d711c5c2c4d6013ba813956db1e3cff245eedbad54