[INFO] fetching crate hyperfine 1.10.0...
[INFO] documenting hyperfine-1.10.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate hyperfine 1.10.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate hyperfine 1.10.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hyperfine 1.10.0
[INFO] finished tweaking crates.io crate hyperfine 1.10.0
[INFO] tweaked toml for crates.io crate hyperfine 1.10.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate hyperfine 1.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indicatif v0.14.0
[INFO] [stderr]   Downloaded statistical v1.0.0
[INFO] [stderr]   Downloaded rust_decimal v1.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 8bd2e50d331a3d01127c57700b73d0f77fa8dfddd76c3815ede08bd1b21c3bb6
[INFO] running `Command { std: "docker" "start" "-a" "8bd2e50d331a3d01127c57700b73d0f77fa8dfddd76c3815ede08bd1b21c3bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bd2e50d331a3d01127c57700b73d0f77fa8dfddd76c3815ede08bd1b21c3bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bd2e50d331a3d01127c57700b73d0f77fa8dfddd76c3815ede08bd1b21c3bb6", kill_on_drop: false }`
[INFO] [stdout] 8bd2e50d331a3d01127c57700b73d0f77fa8dfddd76c3815ede08bd1b21c3bb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 25248e75dfad1da772a3435d7d497cf35dbfd38d723b8f856936b323f7c15dd7
[INFO] running `Command { std: "docker" "start" "-a" "25248e75dfad1da772a3435d7d497cf35dbfd38d723b8f856936b323f7c15dd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rust_decimal v1.6.0
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking terminal_size v0.1.12
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking indicatif v0.14.0
[INFO] [stderr]     Checking statistical v1.0.0
[INFO] [stderr]    Compiling hyperfine v1.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting hyperfine v1.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.59s
[INFO] running `Command { std: "docker" "inspect" "25248e75dfad1da772a3435d7d497cf35dbfd38d723b8f856936b323f7c15dd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25248e75dfad1da772a3435d7d497cf35dbfd38d723b8f856936b323f7c15dd7", kill_on_drop: false }`
[INFO] [stdout] 25248e75dfad1da772a3435d7d497cf35dbfd38d723b8f856936b323f7c15dd7