Could not compile with the latest rust toolchain

[xtexChooser]

I wrote my code by following the blog, but I got a error when compiling.

Then I cloned the post-03 branch from this repository, I got the same error.

   Compiling core v0.0.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\core)
   Compiling compiler_builtins v0.1.73
   Compiling rustc-std-workspace-core v1.99.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core)
error[E0465]: multiple rmeta candidates for `core` found
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
  |
note: candidate #1: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildl7B5Ms\target\x86_64-pc-windows-gnu\release\deps\libcore-87e8b19ea002f7b9.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
note: candidate #2: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildl7B5Ms\target\x86_64-pc-windows-gnu\release\deps\libcore-b9677cb8d030ac16.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^

error: could not compile `rustc-std-workspace-core` due to previous error
warning: build failed, waiting for other jobs to finish...
error: `"\\\\?\\E:\\rust\\rustup\\toolchains\\nightly-x86_64-pc-windows-gnu\\bin\\cargo.exe" "rustc" "-p" "alloc" "--release" "--manifest-path" "C:\\Users\\xtex\\AppData\\Local\\Temp\\cargo-xbuildl7B5Ms\\Cargo.toml" "--target" "x86_64-pc-windows-gnu" "--" "-Z" "force-unstable-if-unmarked"` failed with exit code: Some(101)

rustc 1.64.0-nightly (7fe022f5a 2022-07-24)

[xtexChooser]

Accoding to rust-lang/compiler-builtins#334#568784447, I removed line 2 in .cargo/config.toml, the cargo compiled successfully but bootimage not working.

[xtexChooser]

When I run cargo bootimage without --target, bootimage worked. However, I could not run it.

 thread 'main' panicked at 'unexpected llvm-size line output', build.rs:156:39

[asensio-project]

Can you show the line that panics?

[xtexChooser]

F:\Source\blog_os>cargo xbuild --target x86_64-blog_os.json
   Compiling compiler_builtins v0.1.73
   Compiling core v0.0.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\core)
   Compiling rustc-std-workspace-core v1.99.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core)
error[E0465]: multiple rmeta candidates for `core` found
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
  |
note: candidate #1: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildz2StPJ\target\x86_64-blog_os\release\deps\libcore-f120d4a5aeeb3d70.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
note: candidate #2: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildz2StPJ\target\x86_64-blog_os\release\deps\libcore-cdce86557829edc0.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^

error: could not compile `rustc-std-workspace-core` due to previous error
warning: build failed, waiting for other jobs to finish...
error: `"\\\\?\\E:\\rust\\rustup\\toolchains\\nightly-x86_64-pc-windows-gnu\\bin\\cargo.exe" "rustc" "-p" "alloc" "--release" "--manifest-path" "C:\\Users\\xtex\\AppData\\Local\\Temp\\cargo-xbuildz2StPJ\\Cargo.toml" "--target" "x86_64-blog_os.json" "--" "-Z" "force-unstable-if-unmarked"` failed with exit code: Some(101)

I do not know what is the line you said.

The whole lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs is just four lines.

#![feature(no_core)]
#![no_core]

pub use core::*;

[phil-opp]

Could you do a cargo clean and then try again?

[xtexChooser]

I tried. Everytime I try to compile it, I delete the repository and clone it again.

F:\Source\blog_os>ls
Cargo.lock  Cargo.toml  LICENSE-APACHE  LICENSE-MIT  README.md  bors.toml  rust-toolchain  src  x86_64-blog_os.json

F:\Source\blog_os>cargo xbuild --target x86_64-blog_os.json
   Compiling compiler_builtins v0.1.73
   Compiling core v0.0.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\core)
   Compiling rustc-std-workspace-core v1.99.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core)
error[E0465]: multiple rmeta candidates for `core` found
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
  |
note: candidate #1: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildx2wvMz\target\x86_64-blog_os\release\deps\libcore-f120d4a5aeeb3d70.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
note: candidate #2: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildx2wvMz\target\x86_64-blog_os\release\deps\libcore-cdce86557829edc0.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^

error: could not compile `rustc-std-workspace-core` due to previous error
warning: build failed, waiting for other jobs to finish...
error: `"\\\\?\\E:\\rust\\rustup\\toolchains\\nightly-x86_64-pc-windows-gnu\\bin\\cargo.exe" "rustc" "-p" "alloc" "--release" "--manifest-path" "C:\\Users\\xtex\\AppData\\Local\\Temp\\cargo-xbuildx2wvMz\\Cargo.toml" "--target" "x86_64-blog_os.json" "--" "-Z" "force-unstable-if-unmarked"` failed with exit code: Some(101)

F:\Source\blog_os>cargo clean

F:\Source\blog_os>cargo xbuild --target x86_64-blog_os.json
   Compiling core v0.0.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\core)
   Compiling compiler_builtins v0.1.73
   Compiling rustc-std-workspace-core v1.99.0 (E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core)
error[E0465]: multiple rmeta candidates for `core` found
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
  |
note: candidate #1: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildWOfpjg\target\x86_64-blog_os\release\deps\libcore-cdce86557829edc0.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^
note: candidate #2: \\?\C:\Users\xtex\AppData\Local\Temp\cargo-xbuildWOfpjg\target\x86_64-blog_os\release\deps\libcore-f120d4a5aeeb3d70.rmeta
 --> E:\rust\rustup\toolchains\nightly-x86_64-pc-windows-gnu\lib\rustlib\src\rust\library\rustc-std-workspace-core\lib.rs:4:9
  |
4 | pub use core::*;
  |         ^^^^

error: could not compile `rustc-std-workspace-core` due to previous error
warning: build failed, waiting for other jobs to finish...
error: `"\\\\?\\E:\\rust\\rustup\\toolchains\\nightly-x86_64-pc-windows-gnu\\bin\\cargo.exe" "rustc" "-p" "alloc" "--release" "--manifest-path" "C:\\Users\\xtex\\AppData\\Local\\Temp\\cargo-xbuildWOfpjg\\Cargo.toml" "--target" "x86_64-blog_os.json" "--" "-Z" "force-unstable-if-unmarked"` failed with exit code: Some(101)

F:\Source\blog_os>

[xtexChooser]

Currently cargo 1.65.0-nightly (4fd148c47 2022-08-03) rustc 1.65.0-nightly (2befdefdd 2022-08-06) rustup 1.25.1 (bb60b1e89 2022-07-12)

[phil-opp]

The post-03 code has a .cargo/config.toml file that enables cargo's build-std feature, so cargo-xbuild is no longer needed. Could you try to run just cargo build?

[xtexChooser]

Yeah, it works, please update the documentation.

[phil-opp]

Great to hear that!

please update the documentation.

Which documentation do you mean? The Readme in the post-03 branch already describes the build process using cargo build and the blog at https://os.phil-opp.com/ is not using cargo-xbuild anymore either.

[xtexChooser]

Oh the Chinese translations, I commented there.

[phil-opp]

Thanks!