[INFO] fetching crate b2histogram 1.0.0...
[INFO] documenting b2histogram-1.0.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate b2histogram 1.0.0 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate b2histogram 1.0.0 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 b2histogram 1.0.0
[INFO] finished tweaking crates.io crate b2histogram 1.0.0
[INFO] tweaked toml for crates.io crate b2histogram 1.0.0 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate crates.io crate b2histogram 1.0.0 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] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] [stdout] fb4a9b08546e2b57b7bcd3927e5f350fb01da0ed506201c3cade2ad57b957c0f
[INFO] running `Command { std: "docker" "start" "-a" "fb4a9b08546e2b57b7bcd3927e5f350fb01da0ed506201c3cade2ad57b957c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb4a9b08546e2b57b7bcd3927e5f350fb01da0ed506201c3cade2ad57b957c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4a9b08546e2b57b7bcd3927e5f350fb01da0ed506201c3cade2ad57b957c0f", kill_on_drop: false }`
[INFO] [stdout] fb4a9b08546e2b57b7bcd3927e5f350fb01da0ed506201c3cade2ad57b957c0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] 177053f0b71e295ed9c3032898b32c979d75100d5ac00b52a224436eadbc258d
[INFO] running `Command { std: "docker" "start" "-a" "177053f0b71e295ed9c3032898b32c979d75100d5ac00b52a224436eadbc258d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Checking b2histogram v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting b2histogram v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `Command { std: "docker" "inspect" "177053f0b71e295ed9c3032898b32c979d75100d5ac00b52a224436eadbc258d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "177053f0b71e295ed9c3032898b32c979d75100d5ac00b52a224436eadbc258d", kill_on_drop: false }`
[INFO] [stdout] 177053f0b71e295ed9c3032898b32c979d75100d5ac00b52a224436eadbc258d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] e553dc2a115d38c89f9e060be575f7fed2fae4494d9e8b7dff243d3adf520adc
[INFO] running `Command { std: "docker" "start" "-a" "e553dc2a115d38c89f9e060be575f7fed2fae4494d9e8b7dff243d3adf520adc", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Documenting b2histogram v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "e553dc2a115d38c89f9e060be575f7fed2fae4494d9e8b7dff243d3adf520adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e553dc2a115d38c89f9e060be575f7fed2fae4494d9e8b7dff243d3adf520adc", kill_on_drop: false }`
[INFO] [stdout] e553dc2a115d38c89f9e060be575f7fed2fae4494d9e8b7dff243d3adf520adc