[INFO] fetching crate adivon 0.2.6...
[INFO] documenting adivon-0.2.6 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate adivon 0.2.6 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate adivon 0.2.6 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 crates.io crate adivon 0.2.6
[INFO] finished tweaking crates.io crate adivon 0.2.6
[INFO] tweaked toml for crates.io crate adivon 0.2.6 written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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" "+1.61.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.5.3
[INFO] [stderr]   Downloaded clippy v0.0.302
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded regex-syntax v0.3.9
[INFO] [stderr]   Downloaded env_logger v0.3.5
[INFO] [stderr]   Downloaded vec_map v0.6.0
[INFO] [stderr]   Downloaded thread_local v0.2.7
[INFO] [stderr]   Downloaded utf8-ranges v0.1.3
[INFO] [stderr]   Downloaded regex v0.1.80
[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded thread-id v2.0.0
[INFO] [stderr]   Downloaded quickcheck v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 26a80553b5f5a04136368011326dc4f565ab38726908a4689651b61b6a6b4d5c
[INFO] running `Command { std: "docker" "start" "-a" "26a80553b5f5a04136368011326dc4f565ab38726908a4689651b61b6a6b4d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26a80553b5f5a04136368011326dc4f565ab38726908a4689651b61b6a6b4d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a80553b5f5a04136368011326dc4f565ab38726908a4689651b61b6a6b4d5c", kill_on_drop: false }`
[INFO] [stdout] 26a80553b5f5a04136368011326dc4f565ab38726908a4689651b61b6a6b4d5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] fb8c2022e1601155d536f40ab32b6ddada162e2eff3c121471af5e1f54e2e803
[INFO] running `Command { std: "docker" "start" "-a" "fb8c2022e1601155d536f40ab32b6ddada162e2eff3c121471af5e1f54e2e803", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting adivon v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults, plugin)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/rbtree.rs:447:10
[INFO] [stdout]     |
[INFO] [stdout] 447 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/kdtree.rs:256:10
[INFO] [stdout]     |
[INFO] [stdout] 256 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `adivon`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name adivon src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=53cb62a6eb751736 -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-8c59ebd94109a87b.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-c476b9da6fac16c7.rmeta --cap-lints=warn --crate-version 0.2.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "fb8c2022e1601155d536f40ab32b6ddada162e2eff3c121471af5e1f54e2e803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb8c2022e1601155d536f40ab32b6ddada162e2eff3c121471af5e1f54e2e803", kill_on_drop: false }`
[INFO] [stdout] fb8c2022e1601155d536f40ab32b6ddada162e2eff3c121471af5e1f54e2e803