2. Thank you for running builds on ubuntu 22.04 so it's compatible with it. You might want to compile with cross or zig to support even older operating systems.
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I'm not sure where you got this idea. The binary you distribute is dynamically linked:
> fresh: ELF 64-bit LSB pie executable, x86-64, [...], dynamically linked, [...]
and it links with libc, libm, and libgcc_s, which means the distro will matter, because GLIBC is not compatible that way.
How did you, after building this entire app, come to the conclusion that its statically linked? Rust apps typically aren't, by default.
2. Thank you for running builds on ubuntu 22.04 so it's compatible with it. You might want to compile with cross or zig to support even older operating systems.