add back accidentally removed std feature

.rust2rpm.conf

@@ -3,7 +3,6 @@ unwanted-features =
   compiler_builtins
   core
   rustc-dep-of-std
-  std
   stdweb
   test-in-browser
   wasm-bindgen

rust-getrandom0.1.spec

@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}0.1
 Version:        0.1.15
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Small cross-platform library for retrieving random data from system source
 
 # Upstream license specification: MIT OR Apache-2.0
@@ -79,6 +79,18 @@ which use "log" feature of "%{crate}" crate.
 %files       -n %{name}+log-devel
 %ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
 
+%package     -n %{name}+std-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+std-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "std" feature of "%{crate}" crate.
+
+%files       -n %{name}+std-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
 %cargo_prep
@@ -98,6 +110,9 @@ which use "log" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sat Nov 28 2020 Fabio Valentini <decathorpe@gmail.com> - 0.1.15-3
+- Add back accidentally removed std feature.
+
 * Sat Nov 28 2020 Fabio Valentini <decathorpe@gmail.com> - 0.1.15-2
 - Remove dependencies on compiler internals.