Fix build with Rust 1.88

[K900]

No description provided.

[dtomvan]

Yeah, I have no idea why rust did this, because the two versions are completely incompatible with each other: you cannot compile it anymore under 1.86 after this change. Also for 1.88 you could remove #![feature(naked_functions)] because it has finally been stabilized

[ilyagr]

Perhaps https://docs.rs/rustversion/latest/rustversion/ might help if you need different attr on different Rust versions.

[Mic92]

nix-ld> error: variables can be used directly in the `format!` string
nix-ld>   --> build.rs:36:5
nix-ld>    |
nix-ld> 36 |     println!("cargo:rustc-env=NIX_LD_TEST_TARGET={}", target);
nix-ld>    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nix-ld>    |
nix-ld>    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
nix-ld>    = note: `-D clippy::uninlined-format-args` implied by `-D warnings`
nix-ld>    = help: to override `-D warnings` add `#[allow(clippy::uninlined_format_args)]`
nix-ld> help: change this to
nix-ld>    |
nix-ld> 36 -     println!("cargo:rustc-env=NIX_LD_TEST_TARGET={}", target);
nix-ld> 36 +     println!("cargo:rustc-env=NIX_LD_TEST_TARGET={target}");
nix-ld>    |
nix-ld> 
nix-ld> error: variables can be used directly in the `format!` string
nix-ld>   --> build.rs:40:49
nix-ld>    |
nix-ld> 40 |     if let Ok(target_default_nix_ld) = env::var(format!("DEFAULT_NIX_LD_{}", target_suffix)) {
nix-ld>    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nix-ld>    |
nix-ld>    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
nix-ld> help: change this to
nix-ld>    |
nix-ld> 40 -     if let Ok(target_default_nix_ld) = env::var(format!("DEFAULT_NIX_LD_{}", target_suffix)) {
nix-ld> 40 +     if let Ok(target_default_nix_ld) = env::var(format!("DEFAULT_NIX_LD_{target_suffix}")) {
nix-ld>    |
nix-ld> 
nix-ld> error: variables can be used directly in the `format!` string
nix-ld>   --> build.rs:41:9
nix-ld>    |
nix-ld> 41 |         println!("cargo:rustc-env=DEFAULT_NIX_LD={}", target_default_nix_ld);
nix-ld>    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nix-ld>    |
nix-ld>    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
nix-ld> help: change this to
nix-ld>    |
nix-ld> 41 -         println!("cargo:rustc-env=DEFAULT_NIX_LD={}", target_default_nix_ld);
nix-ld> 41 +         println!("cargo:rustc-env=DEFAULT_NIX_LD={target_default_nix_ld}");
nix-ld>    |
nix-ld> 
nix-ld> error: variables can be used directly in the `format!` string
nix-ld>   --> build.rs:46:9
nix-ld>    |
nix-ld> 46 |         println!("cargo:rustc-env=NIX_SYSTEM={}", underscored);
nix-ld>    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nix-ld>    |
nix-ld>    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
nix-ld> help: change this to
nix-ld>    |
nix-ld> 46 -         println!("cargo:rustc-env=NIX_SYSTEM={}", underscored);
nix-ld> 46 +         println!("cargo:rustc-env=NIX_SYSTEM={underscored}");
nix-ld>    |
nix-ld> 
nix-ld> error: could not compile `nix-ld` (build script) due to 4 previous errors
error: build of '/nix/store/ihxfg7b7sgriywaw6h9kmpq7vhxpvfva-nix-ld.drv' on 'ssh-ng://nix@yasmin' failed: builder for '/nix/store/ihxfg7b7sgriywaw6h9kmpq7vhxpvfva-nix-ld.drv' failed with exit code 101;
       last 25 log lines:
       >    |
       > 41 |         println!("cargo:rustc-env=DEFAULT_NIX_LD={}", target_default_nix_ld);
       >    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >    |
       >    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
       > help: change this to
       >    |
       > 41 -         println!("cargo:rustc-env=DEFAULT_NIX_LD={}", target_default_nix_ld);
       > 41 +         println!("cargo:rustc-env=DEFAULT_NIX_LD={target_default_nix_ld}");
       >    |
       >
       > error: variables can be used directly in the `format!` string
       >   --> build.rs:46:9
       >    |
       > 46 |         println!("cargo:rustc-env=NIX_SYSTEM={}", underscored);
       >    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >    |
       >    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
       > help: change this to
       >    |
       > 46 -         println!("cargo:rustc-env=NIX_SYSTEM={}", underscored);
       > 46 +         println!("cargo:rustc-env=NIX_SYSTEM={underscored}");
       >    |
       >
       > error: could not compile `nix-ld` (build script) due to 4 previous errors
       For full logs, run:
         nix log /nix/store/ihxfg7b7sgriywaw6h9kmpq7vhxpvfva-nix-ld.drv
error: Cannot build '/nix/store/ihxfg7b7sgriywaw6h9kmpq7vhxpvfva-nix-ld.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9v33ngx26h16fjp71y8r1faswkjplygj-nix-ld
program finished with exit code 1
elapsedTime=68.051891