Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
[headless_shell:458/35389] COPY default_for_rust_host_build_tools/obj/build/rust/std/libadler.rlib default_for_rust_host_build_tools/prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler.rlib
FAILED: default_for_rust_host_build_tools/prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler.rlib 
ln -f default_for_rust_host_build_tools/obj/build/rust/std/libadler.rlib default_for_rust_host_build_tools/prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler.rlib 2>/dev/null || (rm -rf default_for_rust_host_build_tools/prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler.rlib && cp -af default_for_rust_host_build_tools/obj/build/rust/std/libadler.rlib default_for_rust_host_build_tools/prebuilt_rustc_sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler.rlib)
cp: cannot stat 'default_for_rust_host_build_tools/obj/build/rust/std/libadler.rlib': No such file or directory
This relevant error message saying that 'COPY default_for_rust_host_build_tools/obj/build/rust/std/libadler.rlib' failed because libadler.rlib is not found.