error: "/home/xiaguangbo/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/Cargo.lock" does not exist

[xiaguangbo]

Problem

$ cargo build
error: "/home/xiaguangbo/.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

delete Cargo.lock target/ at my project, do rustup update, rebuild, report this err.
reinstall rust not solution

Steps

No response

Possible Solution(s)

at ...rustlib/src/rust/, do nano Cargo.lock, rebuild is ok

Notes

No response

Version

No response

[weihanglo]

Close as duplicate of rust-lang/rust#128808