Missing Cargo.lock in nightly, unable to build stdlib

[dunric]

Verification

• I searched for recent similar issues at https://github.com/rust-lang/rustup/issues?q=is%3Aissue+is%3Aopen%2Cclosed and found no duplicates.
• I am on the latest version of Rustup according to https://github.com/rust-lang/rustup/tags and am still able to reproduce my issue.

Problem

Recent nightly toolchain package for x86_64-unknown-linux-gnu platform miss in its rust-src component Cargo.lock file, which rust compiler expects when rebuild of standard library is required.

Steps

1. Make sure toolchain nightly-x86_64-unknown-linux-gnu is installed with its rust-src component
2. Attempt to compile a cargo project with build-std option like
   cargo +nightly build -Z build-std=std,panic_abort --target=x86_64-unknown-linux-gnu -r
3. Compilation fails with

error: "/home/whatever/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/Cargo.lock" does not exist, unable to build with the standard library, try:
rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu

rust-src for nightly is indeed installed and subdirectory ~/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust contains bin/ and library/ from nightly, only Cargo.lock is not there.

Possible Solution(s)

No response

Notes

No response

Rustup version

rustup 1.27.1 (54dd3d00f 2024-04-24)

Installed toolchains

stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu

OS version

Linux x86_64 (Arch Linux)

[rami3l]

@dunric Thanks for filing this issue! I'm not sure if this is a Rustup issue, but it might indicate a faulty installation caused by something like #988. For the moment being, I suggest uninstalling and reinstalling the toolchain in question.

[ChrisDenton]

This is a Cargo issue and is fixed by rust-lang/cargo#14370

[dunric]

This is a Cargo issue and is fixed by rust-lang/cargo#14370

Aha, thanks for the quick reply. Good to know there is already PR which fixes this issue.