[INFO] fetching crate bitflow 0.5.1...
[INFO] documenting bitflow-0.5.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate bitflow 0.5.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate bitflow 0.5.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitflow 0.5.1
[INFO] finished tweaking crates.io crate bitflow 0.5.1
[INFO] tweaked toml for crates.io crate bitflow 0.5.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.46.0" "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] cfc73d8a76a3e01a331a80bd96cc6b72722a9745be7fbd2d44efed1cdcbedb85
[INFO] running `Command { std: "docker" "start" "-a" "cfc73d8a76a3e01a331a80bd96cc6b72722a9745be7fbd2d44efed1cdcbedb85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfc73d8a76a3e01a331a80bd96cc6b72722a9745be7fbd2d44efed1cdcbedb85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc73d8a76a3e01a331a80bd96cc6b72722a9745be7fbd2d44efed1cdcbedb85", kill_on_drop: false }`
[INFO] [stdout] cfc73d8a76a3e01a331a80bd96cc6b72722a9745be7fbd2d44efed1cdcbedb85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecd72463a9b01257ddc3626f3fd7cc0af600686533068ef1f7ec66901492978
[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" "4ecd72463a9b01257ddc3626f3fd7cc0af600686533068ef1f7ec66901492978", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking md5 v0.3.8
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking mimesniff v0.3.0
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking uname v0.1.1
[INFO] [stderr]    Compiling im v12.3.4
[INFO] [stderr]    Compiling rusoto_core v0.39.0
[INFO] [stderr]    Compiling sentry v0.12.1
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking sized-chunks v0.1.3
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking slog-scope v4.3.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking futures-fs v0.0.5
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-signal v0.2.9
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-process v0.2.5
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking hmac v0.5.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking slog-json v2.3.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking debugid v0.3.1
[INFO] [stderr]     Checking sentry-types v0.8.1
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking rusoto_credential v0.39.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking rusoto_s3 v0.39.0
[INFO] [stderr]  Documenting bitflow v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.93s
[INFO] running `Command { std: "docker" "inspect" "4ecd72463a9b01257ddc3626f3fd7cc0af600686533068ef1f7ec66901492978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecd72463a9b01257ddc3626f3fd7cc0af600686533068ef1f7ec66901492978", kill_on_drop: false }`
[INFO] [stdout] 4ecd72463a9b01257ddc3626f3fd7cc0af600686533068ef1f7ec66901492978