`bin` file does not exist

[erayerdin]

Hello, I've been following A Minimal Rust Kernel tutorial. I am on Creating a Bootimage section. The problem is, even though build finishes successfully, .bin file does not exist. Here's build stdout:

WARNING: `CARGO_MANIFEST_DIR` env variable not set
Building kernel
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
Building bootloader
    Finished `release` profile [optimized + debuginfo] target(s) in 0.07s
Created bootimage for `cernel` at `/var/home/erayerdin/Projects/cernel/target/x86_64-cernel/debug/bootimage-cernel.bin`

I do ls target/x86-64_cernel/debug/, which does not show any bin file at all.

Just in case if it is needed, here are some configurations:

# Cargo.toml
[package]
name = "cernel"
version = "0.1.0"
edition = "2024"

[dependencies]
bootloader = "0.9"

[profile.dev]
panic = "abort"

[profile.release]
panic = "abort"

[[bin]]
name = "cernel"
test = false
bench = false

# .cargo/config.toml

[unstable]
json-target-spec = true
build-std = ["core", "compiler_builtins"]
build-std-features = ["compiler-builtins-mem"]

[build]
target = "x86_64-cernel.json"

// x86_64-cernel.json
{
  "llvm-target": "x86_64-unknown-none",
  "data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128",
  "arch": "x86_64",
  "target-endian": "little",
  "target-pointer-width": 64,
  "target-c-int-width": 32,
  "os": "none",
  "executables": true,
  "linker-flavor": "ld.lld",
  "linker": "rust-lld",
  "panic-strategy": "abort",
  "disable-redzone": true,
  "features": "-mmx,-sse,+soft-float",
  "rustc-abi": "x86-softfloat"
}

# rust-toolchain.toml
[toolchain]
channel = "nightly"

[Freax13]

I cannot reproduce this.

I used your files and the following src/main.rs file:

// src/main.rs

#![no_std] // don't link the Rust standard library
#![no_main] // disable all Rust-level entry points

use core::panic::PanicInfo;

/// This function is called on panic.
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
    loop {}
}

#[unsafe(no_mangle)] // don't mangle the name of this function
pub extern "C" fn _start() -> ! {
    // this function is the entry point, since the linker looks for a function
    // named `_start` by default
    loop {}
}

Log:

[nix-shell:~/code/cernel]$ cargo bootimage
WARNING: `CARGO_MANIFEST_DIR` env variable not set
Building kernel
   Compiling compiler_builtins v0.1.160 (/home/freax13/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/compiler-builtins/compiler-builtins)
   Compiling bootloader v0.9.34
   Compiling core v0.0.0 (/home/freax13/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core)
   Compiling cernel v0.1.0 (/home/freax13/code/cernel)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.60s
Building bootloader
   Compiling compiler_builtins v0.1.160 (/home/freax13/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/compiler-builtins/compiler-builtins)
   Compiling core v0.0.0 (/home/freax13/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core)
   Compiling serde v1.0.116
   Compiling bitflags v1.2.1
   Compiling llvm-tools v0.1.1
   Compiling x86_64 v0.14.7
   Compiling toml v0.5.6
   Compiling bootloader v0.9.34 (/home/freax13/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/bootloader-0.9.34)
   Compiling bit_field v0.10.1
   Compiling volatile v0.4.4
   Compiling zero v0.1.2
   Compiling fixedvec v0.2.4
   Compiling rlibc v1.0.0
   Compiling usize_conversions v0.2.0
   Compiling xmas-elf v0.6.2
    Finished `release` profile [optimized + debuginfo] target(s) in 10.79s
Created bootimage for `cernel` at `/home/freax13/code/cernel/target/x86_64-cernel/debug/bootimage-cernel.bin`

[nix-shell:~/code/cernel]$ ls target/x86_64-cernel/debug/
bootimage-cernel.bin  build  cernel  cernel.d  deps  examples  incremental