[INFO] cloning repository https://github.com/GGalizzi/composite
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GGalizzi/composite" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGGalizzi%2Fcomposite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGGalizzi%2Fcomposite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f35f4f5fe931886f4d07a5725ad898db53947d4
[INFO] documenting GGalizzi/composite against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGGalizzi%2Fcomposite" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GGalizzi/composite on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GGalizzi/composite
[INFO] finished tweaking git repo https://github.com/GGalizzi/composite
[INFO] tweaked toml for git repo https://github.com/GGalizzi/composite written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate git repo https://github.com/GGalizzi/composite already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de7dee7dc3f643ef2022ea4cc5edcb695acfe8c9002174ef34554b359549422c
[INFO] running `Command { std: "docker" "start" "-a" "de7dee7dc3f643ef2022ea4cc5edcb695acfe8c9002174ef34554b359549422c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7dee7dc3f643ef2022ea4cc5edcb695acfe8c9002174ef34554b359549422c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7dee7dc3f643ef2022ea4cc5edcb695acfe8c9002174ef34554b359549422c", kill_on_drop: false }`
[INFO] [stdout] de7dee7dc3f643ef2022ea4cc5edcb695acfe8c9002174ef34554b359549422c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1a9f384742060b16a95df021f68d55970b5f0fe1a96f6de69047c95f99755ef
[INFO] running `Command { std: "docker" "start" "-a" "d1a9f384742060b16a95df021f68d55970b5f0fe1a96f6de69047c95f99755ef", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting composite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(append,drain)]
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(append,drain)]
[INFO] [stdout]   |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/behavior.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 11 | | //! pub struct MovementBehavior;
[INFO] [stdout] 12 | | //! 
[INFO] [stdout] 13 | | //! impl Behavior<EntityData, Event> for MovementBehavior {
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | | //! behaviors!([MovementBehavior: family: movable, events: movement]]);
[INFO] [stdout] 20 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout]    = note: error from rustc: unexpected closing delimiter: `)`
[INFO] [stdout]    = note: error from rustc: mismatched closing delimiter: `]`
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 10 | //! ```text
[INFO] [stdout]    |        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `composite`
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name composite src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6cfac20033a62667 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d1a9f384742060b16a95df021f68d55970b5f0fe1a96f6de69047c95f99755ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1a9f384742060b16a95df021f68d55970b5f0fe1a96f6de69047c95f99755ef", kill_on_drop: false }`
[INFO] [stdout] d1a9f384742060b16a95df021f68d55970b5f0fe1a96f6de69047c95f99755ef