[INFO] fetching crate search_trees 0.0.3...
[INFO] documenting search_trees-0.0.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate search_trees 0.0.3 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate search_trees 0.0.3 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate search_trees 0.0.3
[INFO] finished tweaking crates.io crate search_trees 0.0.3
[INFO] tweaked toml for crates.io crate search_trees 0.0.3 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate search_trees 0.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ac0ccd4a9bbf9b3fbd5abfdd15ad9cf67e7a458e9c9deb3ef2523e1978815be
[INFO] running `Command { std: "docker" "start" "-a" "2ac0ccd4a9bbf9b3fbd5abfdd15ad9cf67e7a458e9c9deb3ef2523e1978815be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ac0ccd4a9bbf9b3fbd5abfdd15ad9cf67e7a458e9c9deb3ef2523e1978815be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac0ccd4a9bbf9b3fbd5abfdd15ad9cf67e7a458e9c9deb3ef2523e1978815be", kill_on_drop: false }`
[INFO] [stdout] 2ac0ccd4a9bbf9b3fbd5abfdd15ad9cf67e7a458e9c9deb3ef2523e1978815be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 586bdfec79b4f2d4e7138947196d1d868e76238b3edcfd1796f7fe710310f571
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "586bdfec79b4f2d4e7138947196d1d868e76238b3edcfd1796f7fe710310f571", kill_on_drop: false }`
[INFO] [stderr]  Documenting search_trees v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `!` or `::`, found keyword `use`
[INFO] [stdout]   --> src/avltree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | ppppp
[INFO] [stdout]    |      - expected one of `!` or `::`
[INFO] [stdout] 11 | use std::cell::RefCell;
[INFO] [stdout]    | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::avltree::AVLTree`
[INFO] [stdout]   --> src/prelude.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use crate::avltree::AVLTree;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ no `AVLTree` in `avltree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `search_trees`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name search_trees src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=21c86ad793ca9521 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.0.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "586bdfec79b4f2d4e7138947196d1d868e76238b3edcfd1796f7fe710310f571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "586bdfec79b4f2d4e7138947196d1d868e76238b3edcfd1796f7fe710310f571", kill_on_drop: false }`
[INFO] [stdout] 586bdfec79b4f2d4e7138947196d1d868e76238b3edcfd1796f7fe710310f571