can't find crate for `std`

[tmoonlight]

I try compile this project ,but failed like this:

[root@iz0xi6fyb0guktgu5ux21tz warp]# make
make build
make[1]: Entering directory `/root/warp'
cargo build -p warp-runner --release --target x86_64-unknown-linux-gnu
   Compiling warp-runner v0.3.0 (/root/warp/warp-runner)
warning: trait objects without an explicit `dyn` are deprecated
  --> warp-runner/src/main.rs:46:29
   |
46 | fn main() -> Result<(), Box<Error>> {
   |                             ^^^^^ help: use `dyn`: `dyn Error`
   |
   = note: `#[warn(bare_trait_objects)]` on by default

    Finished release [optimized] target(s) in 3.16s
strip target/x86_64-unknown-linux-gnu/release/warp-runner
cargo build -p warp-runner --release --target x86_64-pc-windows-gnu
   Compiling approx v0.1.1
error[E0463]: can't find crate for `std`
  |
  = note: the `x86_64-pc-windows-gnu` target may not be installed

error: aborting due to previous error

For more information about this error, try `rustc --explain E0463`.
error: Could not compile `approx`.

To learn more, run the command again with --verbose.
make[1]: *** [build] Error 101
make[1]: Leaving directory `/root/warp'
make: *** [all] Error 2
[root@iz0xi6fyb0guktgu5ux21tz warp]# ^C

Can you help me? Thank you very much