[INFO] fetching crate langley 0.0.1...
[INFO] documenting langley-0.0.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate langley 0.0.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate langley 0.0.1 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate langley 0.0.1
[INFO] finished tweaking crates.io crate langley 0.0.1
[INFO] tweaked toml for crates.io crate langley 0.0.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded secrecy v0.6.0
[INFO] [stderr]   Downloaded gumdrop v0.7.0
[INFO] [stderr]   Downloaded tracing-subscriber v0.1.6
[INFO] [stderr]   Downloaded gumdrop_derive v0.7.0
[INFO] [stderr]   Downloaded abscissa_core v0.5.2
[INFO] [stderr]   Downloaded abscissa_derive v0.5.0
[INFO] [stderr]   Downloaded canonical-path v2.0.2
[INFO] [stderr]   Downloaded color-backtrace v0.3.0
[INFO] [stderr]   Downloaded abscissa v0.5.1
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77eaad4ea7c197a72fd16d7c5e4c75dd0a3406d7b3be86adaa29321ef5bba834
[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" "77eaad4ea7c197a72fd16d7c5e4c75dd0a3406d7b3be86adaa29321ef5bba834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77eaad4ea7c197a72fd16d7c5e4c75dd0a3406d7b3be86adaa29321ef5bba834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77eaad4ea7c197a72fd16d7c5e4c75dd0a3406d7b3be86adaa29321ef5bba834", kill_on_drop: false }`
[INFO] [stdout] 77eaad4ea7c197a72fd16d7c5e4c75dd0a3406d7b3be86adaa29321ef5bba834
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 126b629121f6339d66346209f1aa86cb392e1ef0ee0dbd0d35d4476a21836786
[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" "126b629121f6339d66346209f1aa86cb392e1ef0ee0dbd0d35d4476a21836786", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking canonical-path v2.0.2
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking color-backtrace v0.3.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling gumdrop_derive v0.7.0
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking gumdrop v0.7.0
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling abscissa_derive v0.5.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking secrecy v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking handlebars v2.0.4
[INFO] [stderr]     Checking tracing-subscriber v0.1.6
[INFO] [stderr]     Checking abscissa_core v0.5.2
[INFO] [stderr]     Checking abscissa v0.5.1
[INFO] [stderr]  Documenting langley v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.25s
[INFO] running `Command { std: "docker" "inspect" "126b629121f6339d66346209f1aa86cb392e1ef0ee0dbd0d35d4476a21836786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126b629121f6339d66346209f1aa86cb392e1ef0ee0dbd0d35d4476a21836786", kill_on_drop: false }`
[INFO] [stdout] 126b629121f6339d66346209f1aa86cb392e1ef0ee0dbd0d35d4476a21836786