[INFO] fetching crate kunai 0.4.0...
[INFO] documenting kunai-0.4.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate kunai 0.4.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate kunai 0.4.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kunai 0.4.0
[INFO] finished tweaking crates.io crate kunai 0.4.0
[INFO] tweaked toml for crates.io crate kunai 0.4.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate kunai 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cssparser-macros v0.3.6
[INFO] [stderr]   Downloaded annotate-snippets v0.6.1
[INFO] [stderr]   Downloaded rustversion v1.0.0
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded opener v0.4.1
[INFO] [stderr]   Downloaded tendril v0.4.1
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.3
[INFO] [stderr]   Downloaded dtoa-short v0.3.2
[INFO] [stderr]   Downloaded hermit-abi v0.1.5
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded rust-argon2 v0.5.1
[INFO] [stderr]   Downloaded globset v0.4.4
[INFO] [stderr]   Downloaded strip-ansi-escapes v0.1.0
[INFO] [stderr]   Downloaded hex v0.4.0
[INFO] [stderr]   Downloaded constant_time_eq v0.1.4
[INFO] [stderr]   Downloaded jobserver v0.1.17
[INFO] [stderr]   Downloaded bstr v0.2.8
[INFO] [stderr]   Downloaded socket2 v0.3.11
[INFO] [stderr]   Downloaded rustfix v0.4.6
[INFO] [stderr]   Downloaded cc v1.0.48
[INFO] [stderr]   Downloaded blake2b_simd v0.5.9
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v610.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.3.0
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v610.0.0
[INFO] [stderr]   Downloaded cssparser v0.25.9
[INFO] [stderr]   Downloaded git2 v0.10.2
[INFO] [stderr]   Downloaded home v0.5.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v610.0.0
[INFO] [stderr]   Downloaded html5ever v0.24.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v610.0.0
[INFO] [stderr]   Downloaded procedural-masquerade v0.1.6
[INFO] [stderr]   Downloaded libgit2-sys v0.9.2
[INFO] [stderr]   Downloaded rustc-ap-graphviz v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-serialize v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v610.0.0
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.0
[INFO] [stderr]   Downloaded curl v0.4.25
[INFO] [stderr]   Downloaded im-rc v13.0.0
[INFO] [stderr]   Downloaded rustc-ap-arena v610.0.0
[INFO] [stderr]   Downloaded git2-curl v0.11.0
[INFO] [stderr]   Downloaded crates-io v0.29.0
[INFO] [stderr]   Downloaded rustc-ap-syntax_pos v610.0.0
[INFO] [stderr]   Downloaded markup5ever v0.9.0
[INFO] [stderr]   Downloaded selectors v0.21.0
[INFO] [stderr]   Downloaded shell-escape v0.1.4
[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded utf8parse v0.1.1
[INFO] [stderr]   Downloaded termion v1.5.4
[INFO] [stderr]   Downloaded vte v0.3.3
[INFO] [stderr]   Downloaded rustc-ap-syntax v610.0.0
[INFO] [stderr]   Downloaded rustfmt-nightly v1.4.11
[INFO] [stderr]   Downloaded cargo v0.41.0
[INFO] [stderr]   Downloaded ego-tree v0.6.2
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.17
[INFO] [stderr]   Downloaded scraper v0.11.0
[INFO] [stderr]   Downloaded bytesize v1.0.0
[INFO] [stderr]   Downloaded cargo-platform v0.1.0
[INFO] [stderr]   Downloaded commoncrypto-sys v0.2.0
[INFO] [stderr]   Downloaded crypto-hash v0.3.4
[INFO] [stderr]   Downloaded fwdansi v1.1.0
[INFO] [stderr]   Downloaded sized-chunks v0.3.1
[INFO] [stderr]   Downloaded serde_ignored v0.1.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v610.0.0
[INFO] [stderr]   Downloaded redox_users v0.3.1
[INFO] [stderr]   Downloaded tar v0.4.26
[INFO] [stderr]   Downloaded same-file v1.0.5
[INFO] [stderr]   Downloaded rustfmt-config_proc_macro v0.2.0
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded miow v0.3.3
[INFO] [stderr]   Downloaded rustc-hash v1.0.1
[INFO] [stderr]   Downloaded cargo_metadata v0.8.2
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded derive-new v0.5.8
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded diff v0.1.12
[INFO] [stderr]   Downloaded serde_json v1.0.44
[INFO] [stderr]   Downloaded walkdir v2.2.9
[INFO] [stderr]   Downloaded ignore v0.4.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 711dabd64526c180b845150ddb2a0751e771148d0c06b5c4b2fe13156f035b22
[INFO] running `Command { std: "docker" "start" "-a" "711dabd64526c180b845150ddb2a0751e771148d0c06b5c4b2fe13156f035b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "711dabd64526c180b845150ddb2a0751e771148d0c06b5c4b2fe13156f035b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "711dabd64526c180b845150ddb2a0751e771148d0c06b5c4b2fe13156f035b22", kill_on_drop: false }`
[INFO] [stdout] 711dabd64526c180b845150ddb2a0751e771148d0c06b5c4b2fe13156f035b22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8123473ec2b82ab67eff31dc6b31b3837f7bfa8313cd3d776b8f0837b0cc8b8c
[INFO] running `Command { std: "docker" "start" "-a" "8123473ec2b82ab67eff31dc6b31b3837f7bfa8313cd3d776b8f0837b0cc8b8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[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/crossbeam-utils-0.6.5/src/lib.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![cfg_attr(feature = "nightly", feature(alloc))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/crossbeam-utils-0.6.5/src/lib.rs:33:34
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![cfg_attr(feature = "nightly", feature(cfg_target_has_atomic))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/crossbeam-utils-0.6.5/src/lib.rs:32:42
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![cfg_attr(feature = "nightly", feature(alloc))]
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stdout] error: aborting due to 3 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 compile `crossbeam-utils` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8123473ec2b82ab67eff31dc6b31b3837f7bfa8313cd3d776b8f0837b0cc8b8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8123473ec2b82ab67eff31dc6b31b3837f7bfa8313cd3d776b8f0837b0cc8b8c", kill_on_drop: false }`
[INFO] [stdout] 8123473ec2b82ab67eff31dc6b31b3837f7bfa8313cd3d776b8f0837b0cc8b8c
