[INFO] fetching crate macchanger 0.4.0...
[INFO] documenting macchanger-0.4.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate macchanger 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate macchanger 0.4.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate macchanger 0.4.0
[INFO] finished tweaking crates.io crate macchanger 0.4.0
[INFO] tweaked toml for crates.io crate macchanger 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90aa2b3a79351bc6ed28a65006de466d0c5f490f102590df7d4419a9dede2cd7
[INFO] running `Command { std: "docker" "start" "-a" "90aa2b3a79351bc6ed28a65006de466d0c5f490f102590df7d4419a9dede2cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90aa2b3a79351bc6ed28a65006de466d0c5f490f102590df7d4419a9dede2cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90aa2b3a79351bc6ed28a65006de466d0c5f490f102590df7d4419a9dede2cd7", kill_on_drop: false }`
[INFO] [stdout] 90aa2b3a79351bc6ed28a65006de466d0c5f490f102590df7d4419a9dede2cd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 406ad9d0c69c12e05c53f5373d5e92bda832dc4f128d91b3d0bfef48427a8c25
[INFO] running `Command { std: "docker" "start" "-a" "406ad9d0c69c12e05c53f5373d5e92bda832dc4f128d91b3d0bfef48427a8c25", kill_on_drop: false }`
[INFO] [stderr]     Checking netdevice v0.1.1
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]  Documenting macchanger v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(termination_trait_lib, process_exitcode_placeholder, try_from)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `macchanger`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name macchanger src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-8470f762d4b535ec.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-76e5fa6b6a740c7f.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-d38c567ce4ccc50e.rmeta --extern netdevice=/opt/rustwide/target/debug/deps/libnetdevice-b5a8d537228bbaeb.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "406ad9d0c69c12e05c53f5373d5e92bda832dc4f128d91b3d0bfef48427a8c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "406ad9d0c69c12e05c53f5373d5e92bda832dc4f128d91b3d0bfef48427a8c25", kill_on_drop: false }`
[INFO] [stdout] 406ad9d0c69c12e05c53f5373d5e92bda832dc4f128d91b3d0bfef48427a8c25
