It seems like an attempt was made to fix this in the past, but it's currently present:
rust W: ELF file ('usr/bin/rust') has executable stack.
rust W: ELF file ('usr/bin/rustc') has executable stack.
rust W: ELF file ('usr/bin/rusti') has executable stack.
rust W: ELF file ('usr/bin/rustdoc') has executable stack.
rust W: ELF file ('usr/bin/rustpkg') has executable stack.
rust W: ELF file ('usr/lib/libstd-4782a756585a81-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/librustc-c84825241471686d-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/libcore-c3ca5d77d81b46c1-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/librusti-5047c7f210c7cac8-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/librust-39583f72884834e3-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/libsyntax-84efebcb12c867a2-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-4782a756585a81-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/librustc-c84825241471686d-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/libcore-c3ca5d77d81b46c1-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/librusti-5047c7f210c7cac8-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/librust-39583f72884834e3-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/librustdoc-1ac3c0763957e4b0-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/libsyntax-84efebcb12c867a2-0.6.so') has executable stack.
rust W: ELF file ('usr/lib/rustc/x86_64-unknown-linux-gnu/lib/librustpkg-795073e423d025b-0.6.so') has executable stack.
This won't fly on systems like Fedora that use SELinux since it won't allow the binary to run with the default policies.
Clearing the executable stack with execstack
still leaves a working set of binaries, so it's definitely not required.
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