Couldn't copy error during build

[DrDinosaur]

I am following this guide: https://github.com/johnthagen/min-sized-rust#optimize-libstd-with-xargo

I ran the following commands:

$ rustup toolchain install nightly
$ rustup override set nightly
$ rustup component add rust-src
$ cargo install xargo

When I run this command, I get an error.

xargo build --target x86_64-pc-windows-gnu --release
error: couldn't copy /home/drdinosaur/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-pc-windows-gnu/lib/rsbegin.o to /home/drdinosaur/.xargo/lib/rustlib/x86_64-pc-windows-gnu/lib/rsbegin.o
caused by: No such file or directory (os error 2)
note: run with `RUST_BACKTRACE=1` for a backtrace

I am attempting to compile to Windows from Linux. I'm not sure what the issue is from that. I'm still, new to Rust, I'm just trying to reduce my binary size through this method. Thanks.

[RalfJung]

Building for Windows needs some extra object files that it seems you do not have. You could try rustup target add x86_64-pc-windows-gnu.

But also... maybe try using std-aware cargo instead? xargo is not developed any more, just some (not all) of the existing use-cases are kept working on a best-effort basis.