[INFO] fetching crate shr_parser_py 0.1.0...
[INFO] documenting shr_parser_py-0.1.0 against 1.90.0 for beta-rustdoc-1.91-2
[INFO] extracting crate shr_parser_py 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate shr_parser_py 0.1.0
[INFO] finished tweaking crates.io crate shr_parser_py 0.1.0
[INFO] tweaked toml for crates.io crate shr_parser_py 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate shr_parser_py 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding pyo3 v0.22.6 (available: v0.26.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shr_parser v1.0.8
[INFO] [stderr] error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shr_parser-1.0.8/Cargo.toml`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   the cargo feature `profile-rustflags` requires a nightly version of Cargo, but this is the `stable` channel
[INFO] [stderr]   See https://doc.rust-lang.org/book/appendix-07-nightly-rust.html for more information about Rust release channels.
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/unstable.html#profile-rustflags-option for more information about using this feature.


command failed: exit status: 101

 Downloading crates ...
  Downloaded shr_parser v1.0.8
error: failed to parse manifest at `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shr_parser-1.0.8/Cargo.toml`

Caused by:
  the cargo feature `profile-rustflags` requires a nightly version of Cargo, but this is the `stable` channel
  See https://doc.rust-lang.org/book/appendix-07-nightly-rust.html for more information about Rust release channels.
  See https://doc.rust-lang.org/cargo/reference/unstable.html#profile-rustflags-option for more information about using this feature.