[INFO] fetching crate causality 0.2.0...
[INFO] documenting causality-0.2.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate causality 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate causality 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate causality 0.2.0
[INFO] finished tweaking crates.io crate causality 0.2.0
[INFO] tweaked toml for crates.io crate causality 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simple-error v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0aa2b5bd03f82450bffee4e0d7e412493346ca37934a258cb71a2452034da7b
[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" "d0aa2b5bd03f82450bffee4e0d7e412493346ca37934a258cb71a2452034da7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0aa2b5bd03f82450bffee4e0d7e412493346ca37934a258cb71a2452034da7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0aa2b5bd03f82450bffee4e0d7e412493346ca37934a258cb71a2452034da7b", kill_on_drop: false }`
[INFO] [stdout] d0aa2b5bd03f82450bffee4e0d7e412493346ca37934a258cb71a2452034da7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "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] b55147701bc0936968747f3b3f68522cdb2acbcd0cdaeb33c9638e1933bfdc8f
[INFO] running `Command { std: "docker" "start" "-a" "b55147701bc0936968747f3b3f68522cdb2acbcd0cdaeb33c9638e1933bfdc8f", kill_on_drop: false }`
[INFO] [stderr]  Documenting causality v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "b55147701bc0936968747f3b3f68522cdb2acbcd0cdaeb33c9638e1933bfdc8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b55147701bc0936968747f3b3f68522cdb2acbcd0cdaeb33c9638e1933bfdc8f", kill_on_drop: false }`
[INFO] [stdout] b55147701bc0936968747f3b3f68522cdb2acbcd0cdaeb33c9638e1933bfdc8f
