[INFO] fetching crate specs-visitor 0.3.0...
[INFO] documenting specs-visitor-0.3.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate specs-visitor 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate specs-visitor 0.3.0 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 specs-visitor 0.3.0
[INFO] finished tweaking crates.io crate specs-visitor 0.3.0
[INFO] tweaked toml for crates.io crate specs-visitor 0.3.0 written to /workspace/builds/worker-0/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] ad67c384ffea5d5208185fe0879aeae9a1882c45c196b242e203a576c3156bf2
[INFO] running `Command { std: "docker" "start" "-a" "ad67c384ffea5d5208185fe0879aeae9a1882c45c196b242e203a576c3156bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad67c384ffea5d5208185fe0879aeae9a1882c45c196b242e203a576c3156bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad67c384ffea5d5208185fe0879aeae9a1882c45c196b242e203a576c3156bf2", kill_on_drop: false }`
[INFO] [stdout] ad67c384ffea5d5208185fe0879aeae9a1882c45c196b242e203a576c3156bf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 12897a5b5f426e61614a752e265aca5057971ab76072c869aae92b2d0bd224c0
[INFO] running `Command { std: "docker" "start" "-a" "12897a5b5f426e61614a752e265aca5057971ab76072c869aae92b2d0bd224c0", kill_on_drop: false }`
[INFO] [stderr]     Checking hibitset v0.5.4
[INFO] [stderr]     Checking shred v0.7.2
[INFO] [stderr]     Checking specs v0.14.3
[INFO] [stderr]  Documenting specs-visitor v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.79s
[INFO] running `Command { std: "docker" "inspect" "12897a5b5f426e61614a752e265aca5057971ab76072c869aae92b2d0bd224c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12897a5b5f426e61614a752e265aca5057971ab76072c869aae92b2d0bd224c0", kill_on_drop: false }`
[INFO] [stdout] 12897a5b5f426e61614a752e265aca5057971ab76072c869aae92b2d0bd224c0