relocation R_X86_64_32S out of range

[polyproline]

When I build a Kernel Os with some crates ,it happend.
Then I tried to give RUSTFLAGS and rebuilded those crates, also failed.
But when I used .cargo/config.toml ,set build-std and env RUSTFLAGS then it did well
Is cargo-xbuild question or have another resolution I don`t find?

[phil-opp]

We don't pass RUSTFLAGS when building core and the other sysroot crates because we need to set our own RUSTFLAGS. If your project works with cargo's build-std feature, I recommend using that instead of cargo-xbuild.