[INFO] fetching crate dobot 0.1.1...
[INFO] documenting dobot-0.1.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate dobot 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate dobot 0.1.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dobot 0.1.1
[INFO] finished tweaking crates.io crate dobot 0.1.1
[INFO] tweaked toml for crates.io crate dobot 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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 IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded serialport v3.3.0
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded mio-serial v3.3.1
[INFO] [stderr]   Downloaded tokio-serial v4.3.3
[INFO] [stderr]   Downloaded getset v0.0.9
[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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c76876c76fee053871887902aed85c0abb51321cb366befd74f4d5d46c52053
[INFO] running `Command { std: "docker" "start" "-a" "6c76876c76fee053871887902aed85c0abb51321cb366befd74f4d5d46c52053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c76876c76fee053871887902aed85c0abb51321cb366befd74f4d5d46c52053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c76876c76fee053871887902aed85c0abb51321cb366befd74f4d5d46c52053", kill_on_drop: false }`
[INFO] [stdout] 6c76876c76fee053871887902aed85c0abb51321cb366befd74f4d5d46c52053
[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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 481f1ce8d3c21dd684b732a992e43fbf3089820a8f82c90c0caa394a21834423
[INFO] running `Command { std: "docker" "start" "-a" "481f1ce8d3c21dd684b732a992e43fbf3089820a8f82c90c0caa394a21834423", 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]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking mio-serial v3.3.1
[INFO] [stderr]     Checking tokio-serial v4.3.3
[INFO] [stderr]  Documenting dobot v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::array::FixedSizeArray`
[INFO] [stdout]  --> src/message.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{array::FixedSizeArray, convert::TryInto, io::prelude::*, marker::Unpin};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^ no `FixedSizeArray` in `array`
[INFO] [stdout] 
[INFO] [stdout] 
[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(fixed_size_array)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `dobot`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dobot src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-c0d08a6b0e1c6da6.rmeta --extern getset=/opt/rustwide/target/debug/deps/libgetset-1b50a1392523cafb.so --extern tokio=/opt/rustwide/target/debug/deps/libtokio-62a05a13c44f86b0.rmeta --extern tokio_serial=/opt/rustwide/target/debug/deps/libtokio_serial-54dc203d39374502.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "481f1ce8d3c21dd684b732a992e43fbf3089820a8f82c90c0caa394a21834423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "481f1ce8d3c21dd684b732a992e43fbf3089820a8f82c90c0caa394a21834423", kill_on_drop: false }`
[INFO] [stdout] 481f1ce8d3c21dd684b732a992e43fbf3089820a8f82c90c0caa394a21834423
