[INFO] fetching crate msiz_rustc-ap-graphviz 3.0.0...
[INFO] documenting msiz_rustc-ap-graphviz-3.0.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate msiz_rustc-ap-graphviz 3.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate msiz_rustc-ap-graphviz 3.0.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msiz_rustc-ap-graphviz 3.0.0
[INFO] finished tweaking crates.io crate msiz_rustc-ap-graphviz 3.0.0
[INFO] tweaked toml for crates.io crate msiz_rustc-ap-graphviz 3.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62e7fefb5402eb08c376f0dff2155fea72bab597b8e96f22360467f1e2575cd6
[INFO] running `Command { std: "docker" "start" "-a" "62e7fefb5402eb08c376f0dff2155fea72bab597b8e96f22360467f1e2575cd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62e7fefb5402eb08c376f0dff2155fea72bab597b8e96f22360467f1e2575cd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e7fefb5402eb08c376f0dff2155fea72bab597b8e96f22360467f1e2575cd6", kill_on_drop: false }`
[INFO] [stdout] 62e7fefb5402eb08c376f0dff2155fea72bab597b8e96f22360467f1e2575cd6
[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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a313e3e83980763d11e816ef6e76ea59936b1a7c1308462459739d0ec49d1310
[INFO] running `Command { std: "docker" "start" "-a" "a313e3e83980763d11e816ef6e76ea59936b1a7c1308462459739d0ec49d1310", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting msiz_rustc-ap-graphviz v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> lib.rs:277:1
[INFO] [stdout]     |
[INFO] [stdout] 277 | #![feature(rustc_private, nll)]
[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 `msiz_rustc-ap-graphviz`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name msiz_rustc_ap_graphviz lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 3.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a313e3e83980763d11e816ef6e76ea59936b1a7c1308462459739d0ec49d1310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a313e3e83980763d11e816ef6e76ea59936b1a7c1308462459739d0ec49d1310", kill_on_drop: false }`
[INFO] [stdout] a313e3e83980763d11e816ef6e76ea59936b1a7c1308462459739d0ec49d1310
