RUST fails to extract because libdeflate-gzip -dc | tar -xf is being used, instead of just tar -zxf

I draw your attention to the:

~/openwrt/staging_dir/host/bin/libdeflate-gzip -dc ~/openwrt/dl/rustc-1.85.0-src.tar.gz | tar -C ~/openwrt/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/host/rustc-1.85.0-src/.. -xf -

command, below:

`mkdir -p ~/openwrt/dl
SHELL= flock ~/openwrt/tmp/.rustc-1.85.0-src.tar.gz.flock -c ' /openwrt/scripts/download.pl "/openwrt/dl" "rustc-1.85.0-src.tar.gz" "2f4f3142ffb7c8402139cfa0796e24baaac8b9fd3f96b2deec3b94b4045c6a8a" "" "https://static.rust-lang.org/dist/" '

• curl -f --connect-timeout 20 --retry 5 --location https://static.rust-lang.org/dist/rustc-1.85.0-src.tar.gz
  % Total % Received % Xferd Average Speed Time Time Time Current
  Dload Upload Total Spent Left Speed
  100 565M 100 565M 0 0 10.8M 0 0:00:52 0:00:52 --:--:-- 10.9M
  . ~/openwrt/include/shell.sh; ~/openwrt/staging_dir/host/bin/libdeflate-gzip -dc ~/openwrt/dl/rustc-1.85.0-src.tar.gz | tar -C /openwrt/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/host/rustc-1.85.0-src/.. -xf -
  tar: This does not look like a tar archive
  tar: Exiting with failure status due to previous errors...make: *** [/openwrt/include/toplevel.mk:233: world] Error 2`

I can
curl https://static.rust-lang.org/dist/rustc-1.85.0-src.tar.gz --output rustc-1.85.0-src.tar.gz mkdir rustctest cd rustctest tar -zxf ../rustc-1.85.0-src.tar.gz

and it extracts normally.

Is there a way to have the build process use tar -xzf directly, instead of the Rube Goldberg method?

Start with the reported extraction command and trace how scripts/download.pl and the build path ending at include/toplevel.mk:233 invoke it. Compare the libdeflate-gzip pipeline with direct tar gzip extraction, then verify that the Rust source archive unpacks successfully and the affected world build completes.