[INFO] fetching crate timeout-readwrite 0.3.1...
[INFO] documenting timeout-readwrite-0.3.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate timeout-readwrite 0.3.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate timeout-readwrite 0.3.1 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 timeout-readwrite 0.3.1
[INFO] finished tweaking crates.io crate timeout-readwrite 0.3.1
[INFO] tweaked toml for crates.io crate timeout-readwrite 0.3.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate timeout-readwrite 0.3.1 already has a lockfile, it will not be regenerated
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] c80b60f74f8e9020885f92225e2c8f8eff5d0181e3198b4c07c8131ce4f18159
[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" "c80b60f74f8e9020885f92225e2c8f8eff5d0181e3198b4c07c8131ce4f18159", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c80b60f74f8e9020885f92225e2c8f8eff5d0181e3198b4c07c8131ce4f18159", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c80b60f74f8e9020885f92225e2c8f8eff5d0181e3198b4c07c8131ce4f18159", kill_on_drop: false }`
[INFO] [stdout] c80b60f74f8e9020885f92225e2c8f8eff5d0181e3198b4c07c8131ce4f18159
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 7860731ac38599889f66396eac93e6dc73c4e956440a8659d15391c2ff2f71db
[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" "7860731ac38599889f66396eac93e6dc73c4e956440a8659d15391c2ff2f71db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]  Documenting timeout-readwrite v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.99s
[INFO] running `Command { std: "docker" "inspect" "7860731ac38599889f66396eac93e6dc73c4e956440a8659d15391c2ff2f71db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7860731ac38599889f66396eac93e6dc73c4e956440a8659d15391c2ff2f71db", kill_on_drop: false }`
[INFO] [stdout] 7860731ac38599889f66396eac93e6dc73c4e956440a8659d15391c2ff2f71db