[INFO] fetching crate atopology 0.0.33...
[INFO] testing atopology-0.0.33 against 1.75.0 for beta-1.76-1
[INFO] extracting crate atopology 0.0.33 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate atopology 0.0.33 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atopology 0.0.33
[INFO] finished tweaking crates.io crate atopology 0.0.33
[INFO] tweaked toml for crates.io crate atopology 0.0.33 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cstr_core v0.2.6
[INFO] [stderr]   Downloaded io-lifetimes v0.7.5
[INFO] [stderr]   Downloaded procfs v0.13.3
[INFO] [stderr]   Downloaded rustix v0.35.16
[INFO] [stderr]   Downloaded linux-raw-sys v0.0.46
[INFO] [stderr]   Downloaded x86 v0.52.0
[INFO] [stderr]   Downloaded libacpica v0.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9277771d1791bb7146a30215b31b938688f17e8eac3e50e61ff3c438b3316f30
[INFO] running `Command { std: "docker" "start" "-a" "9277771d1791bb7146a30215b31b938688f17e8eac3e50e61ff3c438b3316f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9277771d1791bb7146a30215b31b938688f17e8eac3e50e61ff3c438b3316f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9277771d1791bb7146a30215b31b938688f17e8eac3e50e61ff3c438b3316f30", kill_on_drop: false }`
[INFO] [stdout] 9277771d1791bb7146a30215b31b938688f17e8eac3e50e61ff3c438b3316f30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87cf00fa908d520c2cc59c2ea18e4b39b349d4de579b9a9371e315ede469a82a
[INFO] running `Command { std: "docker" "start" "-a" "87cf00fa908d520c2cc59c2ea18e4b39b349d4de579b9a9371e315ede469a82a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling io-lifetimes v0.7.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling rustix v0.35.16
[INFO] [stderr]    Compiling procfs v0.13.3
[INFO] [stderr]    Compiling linux-raw-sys v0.0.46
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling termcolor v1.4.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling cstr_core v0.2.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/x86-0.52.0/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "unstable", feature(step_trait))]
[INFO] [stdout]   |                                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "87cf00fa908d520c2cc59c2ea18e4b39b349d4de579b9a9371e315ede469a82a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87cf00fa908d520c2cc59c2ea18e4b39b349d4de579b9a9371e315ede469a82a", kill_on_drop: false }`
[INFO] [stdout] 87cf00fa908d520c2cc59c2ea18e4b39b349d4de579b9a9371e315ede469a82a
