Rustup: Unable to add component `rust-src` with `rustup` 1.20.2

[popzxc]

Problem
I have rustup 1.20.2 installed with complete profile.

When I try to do:

rustup component add rust-src

I get the following error:

error: component 'rust-src' for target 'x86_64-unknown-linux-gnu' is unavailable for download for channel stable

Steps

1. Install rustup 1.20.2 and use complete profile.
2. Type rustup component add rust-src

Notes

rustup metadata:

╭─user@pc ~ 
╰─$ rustup --version
rustup 1.20.2 (13979c968 2019-10-16)

╭─user@pc ~ 
╰─$ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/user/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.38.0 (625451e37 2019-09-23)

╭─user@pc ~ 
╰─$ rustup component list
cargo-x86_64-unknown-linux-gnu (installed)
clippy-x86_64-unknown-linux-gnu (installed)
llvm-tools-preview-x86_64-unknown-linux-gnu (installed)
rls-x86_64-unknown-linux-gnu (installed)
rust-analysis-x86_64-unknown-linux-gnu (installed)
rust-docs-x86_64-unknown-linux-gnu (installed)
rust-src
rust-std-aarch64-apple-ios
rust-std-aarch64-fuchsia
rust-std-aarch64-linux-android
rust-std-aarch64-pc-windows-msvc
rust-std-aarch64-unknown-linux-gnu
rust-std-aarch64-unknown-linux-musl
rust-std-arm-linux-androideabi
rust-std-arm-unknown-linux-gnueabi
rust-std-arm-unknown-linux-gnueabihf
rust-std-arm-unknown-linux-musleabi
rust-std-arm-unknown-linux-musleabihf
rust-std-armebv7r-none-eabi
rust-std-armebv7r-none-eabihf
rust-std-armv5te-unknown-linux-gnueabi
rust-std-armv5te-unknown-linux-musleabi
rust-std-armv7-apple-ios
rust-std-armv7-linux-androideabi
rust-std-armv7-unknown-linux-gnueabi
rust-std-armv7-unknown-linux-gnueabihf
rust-std-armv7-unknown-linux-musleabi
rust-std-armv7-unknown-linux-musleabihf
rust-std-armv7r-none-eabi
rust-std-armv7r-none-eabihf
rust-std-armv7s-apple-ios
rust-std-asmjs-unknown-emscripten
rust-std-i386-apple-ios
rust-std-i586-pc-windows-msvc
rust-std-i586-unknown-linux-gnu
rust-std-i586-unknown-linux-musl
rust-std-i686-apple-darwin
rust-std-i686-linux-android
rust-std-i686-pc-windows-gnu
rust-std-i686-pc-windows-msvc
rust-std-i686-unknown-freebsd
rust-std-i686-unknown-linux-gnu
rust-std-i686-unknown-linux-musl
rust-std-mips-unknown-linux-gnu
rust-std-mips-unknown-linux-musl
rust-std-mips64-unknown-linux-gnuabi64
rust-std-mips64el-unknown-linux-gnuabi64
rust-std-mipsel-unknown-linux-gnu
rust-std-mipsel-unknown-linux-musl
rust-std-nvptx64-nvidia-cuda
rust-std-powerpc-unknown-linux-gnu
rust-std-powerpc64-unknown-linux-gnu
rust-std-powerpc64le-unknown-linux-gnu
rust-std-riscv32i-unknown-none-elf
rust-std-riscv32imac-unknown-none-elf
rust-std-riscv32imc-unknown-none-elf
rust-std-riscv64gc-unknown-none-elf
rust-std-riscv64imac-unknown-none-elf
rust-std-s390x-unknown-linux-gnu
rust-std-sparc64-unknown-linux-gnu
rust-std-sparcv9-sun-solaris
rust-std-thumbv6m-none-eabi
rust-std-thumbv7em-none-eabi
rust-std-thumbv7em-none-eabihf
rust-std-thumbv7m-none-eabi
rust-std-thumbv7neon-linux-androideabi
rust-std-thumbv7neon-unknown-linux-gnueabihf
rust-std-thumbv8m.base-none-eabi
rust-std-thumbv8m.main-none-eabi
rust-std-thumbv8m.main-none-eabihf
rust-std-wasm32-unknown-emscripten
rust-std-wasm32-unknown-unknown
rust-std-wasm32-wasi
rust-std-x86_64-apple-darwin
rust-std-x86_64-apple-ios
rust-std-x86_64-fortanix-unknown-sgx
rust-std-x86_64-fuchsia
rust-std-x86_64-linux-android
rust-std-x86_64-pc-windows-gnu
rust-std-x86_64-pc-windows-msvc
rust-std-x86_64-rumprun-netbsd
rust-std-x86_64-sun-solaris
rust-std-x86_64-unknown-cloudabi
rust-std-x86_64-unknown-freebsd
rust-std-x86_64-unknown-linux-gnu (installed)
rust-std-x86_64-unknown-linux-gnux32
rust-std-x86_64-unknown-linux-musl
rust-std-x86_64-unknown-netbsd
rustc-x86_64-unknown-linux-gnu (installed)
rustfmt-x86_64-unknown-linux-gnu (installed)

[kinnison]

I have just installed 1.38.0 freshly for the same target and I can rustup component add rust-src into it.

Could you please find and attach ~/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/multirust-channel-manifest.toml so that I can take a look and see if that has been damaged?

[popzxc]

Hello, no problem, here it is.

Uploaded (renamed to .txt because github doesn't allow to attach .toml files`)

[wdhwg001]

multirust-channel-manifest.toml.txt

I got similar error in Windows with rust 1.38.0 and rustup 1.20.2:

error: component 'rust-src' for target 'x86_64-pc-windows-msvc' is unavailable for download for channel stable

[wdhwg001]

I solved it by following these steps:

1. Uninstall anything using rustup uninstall stable and rustup self uninstall.
2. Re-install rust using rustup-init.exe but using default profile instad of complete (and everything else default).

Then it surprisingly works. I guess there might be some issues in the complete profile.

[kinnison]

All those channel manifests look right, so I have no idea how it could have happened for one of you, let alone both of you.

I'd really appreciate it if you could see if you can come up with a reproduction method from fresh install, because if you can, I'll be able to investigate more effectively.

[wdhwg001]

@kinnison Try these steps:

1. Fully uninstall rust in Windows, specifically Windows 10 1903 x64.
2. Download rustup-init.exe form the official website or below.
   rustup-init.zip
3. Run it in (your download folder), no need to run as admin.
4. Customize it to "x86_64-pc-windows-msvc", "stable", "complete" and "yes".
5. Install and make sure you've installed rustup 1.20.2 and rust 1.38.0.
6. In a cmd of your download folder, type rustup component add rust-src.
7. Hopefully you will get the error mentioned. (And the --verbose will show that it reads 12)
   (7. You may try rustup uninstall stable, and try rustup install stable, it will fail in the installation and said they cannot find some packages.)

C:\Users\0w0\Downloads>rustc --version
rustc 1.38.0 (625451e37 2019-09-23)

C:\Users\0w0\Downloads>rustup component add rust-src
error: component 'rust-src' for target 'x86_64-pc-windows-msvc' is unavailable for download for channel stable

C:\Users\0w0\Downloads>rustup update
info: syncing channel updates for 'stable-x86_64-pc-windows-msvc'
info: checking for self-updates

  stable-x86_64-pc-windows-msvc unchanged - rustc 1.38.0 (625451e37 2019-09-23)

C:\Users\0w0\Downloads>rustup component list
cargo-x86_64-pc-windows-msvc (installed)
clippy-x86_64-pc-windows-msvc (installed)
llvm-tools-preview-x86_64-pc-windows-msvc (installed)
rls-x86_64-pc-windows-msvc (installed)
rust-analysis-x86_64-pc-windows-msvc (installed)
rust-docs-x86_64-pc-windows-msvc (installed)
rust-src
rust-std-aarch64-apple-ios
rust-std-aarch64-fuchsia
rust-std-aarch64-linux-android
rust-std-aarch64-pc-windows-msvc
rust-std-aarch64-unknown-linux-gnu
rust-std-aarch64-unknown-linux-musl
rust-std-arm-linux-androideabi
rust-std-arm-unknown-linux-gnueabi
rust-std-arm-unknown-linux-gnueabihf
rust-std-arm-unknown-linux-musleabi
rust-std-arm-unknown-linux-musleabihf
rust-std-armebv7r-none-eabi
rust-std-armebv7r-none-eabihf
rust-std-armv5te-unknown-linux-gnueabi
rust-std-armv5te-unknown-linux-musleabi
rust-std-armv7-apple-ios
rust-std-armv7-linux-androideabi
rust-std-armv7-unknown-linux-gnueabi
rust-std-armv7-unknown-linux-gnueabihf
rust-std-armv7-unknown-linux-musleabi
rust-std-armv7-unknown-linux-musleabihf
rust-std-armv7r-none-eabi
rust-std-armv7r-none-eabihf
rust-std-armv7s-apple-ios
rust-std-asmjs-unknown-emscripten
rust-std-i386-apple-ios
rust-std-i586-pc-windows-msvc
rust-std-i586-unknown-linux-gnu
rust-std-i586-unknown-linux-musl
rust-std-i686-apple-darwin
rust-std-i686-linux-android
rust-std-i686-pc-windows-gnu
rust-std-i686-pc-windows-msvc
rust-std-i686-unknown-freebsd
rust-std-i686-unknown-linux-gnu
rust-std-i686-unknown-linux-musl
rust-std-mips-unknown-linux-gnu
rust-std-mips-unknown-linux-musl
rust-std-mips64-unknown-linux-gnuabi64
rust-std-mips64el-unknown-linux-gnuabi64
rust-std-mipsel-unknown-linux-gnu
rust-std-mipsel-unknown-linux-musl
rust-std-nvptx64-nvidia-cuda
rust-std-powerpc-unknown-linux-gnu
rust-std-powerpc64-unknown-linux-gnu
rust-std-powerpc64le-unknown-linux-gnu
rust-std-riscv32i-unknown-none-elf
rust-std-riscv32imac-unknown-none-elf
rust-std-riscv32imc-unknown-none-elf
rust-std-riscv64gc-unknown-none-elf
rust-std-riscv64imac-unknown-none-elf
rust-std-s390x-unknown-linux-gnu
rust-std-sparc64-unknown-linux-gnu
rust-std-sparcv9-sun-solaris
rust-std-thumbv6m-none-eabi
rust-std-thumbv7em-none-eabi
rust-std-thumbv7em-none-eabihf
rust-std-thumbv7m-none-eabi
rust-std-thumbv7neon-linux-androideabi
rust-std-thumbv7neon-unknown-linux-gnueabihf
rust-std-thumbv8m.base-none-eabi
rust-std-thumbv8m.main-none-eabi
rust-std-thumbv8m.main-none-eabihf
rust-std-wasm32-unknown-emscripten
rust-std-wasm32-unknown-unknown
rust-std-wasm32-wasi
rust-std-x86_64-apple-darwin
rust-std-x86_64-apple-ios
rust-std-x86_64-fortanix-unknown-sgx
rust-std-x86_64-fuchsia
rust-std-x86_64-linux-android
rust-std-x86_64-pc-windows-gnu
rust-std-x86_64-pc-windows-msvc (installed)
rust-std-x86_64-rumprun-netbsd
rust-std-x86_64-sun-solaris
rust-std-x86_64-unknown-cloudabi
rust-std-x86_64-unknown-freebsd
rust-std-x86_64-unknown-linux-gnu
rust-std-x86_64-unknown-linux-gnux32
rust-std-x86_64-unknown-linux-musl
rust-std-x86_64-unknown-netbsd
rustc-x86_64-pc-windows-msvc (installed)
rustfmt-x86_64-pc-windows-msvc (installed)

C:\Users\0w0\Downloads>where rustup
C:\Users\0w0\.cargo\bin\rustup.exe

C:\Users\0w0\Downloads>rustup uninstall stable
info: uninstalling toolchain 'stable-x86_64-pc-windows-msvc'
info: toolchain 'stable-x86_64-pc-windows-msvc' uninstalled

C:\Users\0w0\Downloads>rustup self update
info: checking for self-updates

C:\Users\0w0\Downloads>rustup install stable
info: syncing channel updates for 'stable-x86_64-pc-windows-msvc'
info: latest update on 2019-09-26, rust version 1.38.0 (625451e37 2019-09-23)
error: some components unavailable for download for channel stable: 'lldb-preview', 'miri'
If you require these components, please install and use the latest successful build version,
which you can find at <https://rust-lang.github.io/rustup-components-history>.

After determining the correct date, install it with a command such as:

    rustup toolchain install nightly-2018-12-27

Then you can use the toolchain with commands such as:

    cargo +nightly-2018-12-27 build

C:\Users\0w0\Downloads>rustup --verbose install stable
verbose: read metadata version: '12'
verbose: installing toolchain 'stable-x86_64-pc-windows-msvc'
verbose: toolchain directory: 'C:\Users\0w0\.rustup\toolchains\stable-x86_64-pc-windows-msvc'
info: syncing channel updates for 'stable-x86_64-pc-windows-msvc'
verbose: creating temp file: C:\Users\0w0\.rustup\tmp\6wjtkknb701gamfe_file
verbose: downloading file from: 'https://static.rust-lang.org/dist/channel-rust-stable.toml.sha256'
verbose: downloading with reqwest
verbose: deleted temp file: C:\Users\0w0\.rustup\tmp\6wjtkknb701gamfe_file
verbose: no update hash at: 'C:\Users\0w0\.rustup\update-hashes\stable-x86_64-pc-windows-msvc'
verbose: creating temp file: C:\Users\0w0\.rustup\tmp\pdw93618vak27kie_file.toml
verbose: downloading file from: 'https://static.rust-lang.org/dist/channel-rust-stable.toml'
verbose: downloading with reqwest
verbose: checksum passed
verbose: deleted temp file: C:\Users\0w0\.rustup\tmp\pdw93618vak27kie_file.toml
info: latest update on 2019-09-26, rust version 1.38.0 (625451e37 2019-09-23)
verbose: removing toolchain directory: 'C:\Users\0w0\.rustup\toolchains\stable-x86_64-pc-windows-msvc'
error: some components unavailable for download for channel stable: 'lldb-preview', 'miri'
If you require these components, please install and use the latest successful build version,
which you can find at <https://rust-lang.github.io/rustup-components-history>.

After determining the correct date, install it with a command such as:

    rustup toolchain install nightly-2018-12-27

Then you can use the toolchain with commands such as:

    cargo +nightly-2018-12-27 build

[popzxc]

My actions were completely the same, but for linux.

[kinnison]

Wonderful, thank you for that reproduction process. I shall try it out and see if I can work out what's going on.

[kinnison]

Okay this is something odd about how we install rust-src when it's specified by the profile rather than on the CLI.

My analysis thus-far is:

1. It is actually installing rust-src
2. rustup component list | grep rust-src does not show it as installed, though it is there
3. When installed, rustup component add rust-src will fail with that bad error message
4. rustup component remove rust-src will uninstall it
5. At which point rustup component add rust-src will install it
6. At which point rustup component list | grep rust-src shows it installed
7. And then rustup component add rust-src says it's already up-to-date.

So I'm going to look into how rustup component add rust-src differs in terms of how the component is installed relative to how it comes from the profile directly.