Downgrade deps

oxipng-fix-metadata.diff

@@ -0,0 +1,20 @@
+--- oxipng-5.0.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ oxipng-5.0.0/Cargo.toml	2021-07-12T05:29:27.914572+00:00
+@@ -51,7 +51,7 @@
+ optional = true
+ 
+ [dependencies.crc]
+-version = "^2.0.0"
++version = "^1.9.0"
+ 
+ [dependencies.crossbeam-channel]
+ version = "0.5.0"
+@@ -100,7 +100,7 @@
+ version = "^0.4.0"
+ optional = true
+ [build-dependencies.rustc_version]
+-version = "0.4"
++version = "0.3"
+ 
+ [features]
+ binary = ["clap", "wild", "stderrlog"]

rust-oxipng.spec

@@ -12,6 +12,10 @@ Summary:        Lossless PNG compression optimizer
 License:        MIT
 URL:            https://crates.io/crates/oxipng
 Source:         %{crates_source}
+# Initial patched metadata
+# * Downgrade crc to version 1.9.0
+# * Downgrade rustc_version to version 0.3
+Patch0:         oxipng-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 %if %{__cargo_skip_build}