[INFO] fetching crate dfrs 0.0.4...
[INFO] documenting dfrs-0.0.4 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate dfrs 0.0.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate dfrs 0.0.4 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 dfrs 0.0.4
[INFO] finished tweaking crates.io crate dfrs 0.0.4
[INFO] tweaked toml for crates.io crate dfrs 0.0.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate dfrs 0.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] bcd5c0ba6adbe01b37c54c1b17d53d5ec9b588ce1e2398c919c2c73d187c8436
[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" "bcd5c0ba6adbe01b37c54c1b17d53d5ec9b588ce1e2398c919c2c73d187c8436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcd5c0ba6adbe01b37c54c1b17d53d5ec9b588ce1e2398c919c2c73d187c8436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcd5c0ba6adbe01b37c54c1b17d53d5ec9b588ce1e2398c919c2c73d187c8436", kill_on_drop: false }`
[INFO] [stdout] bcd5c0ba6adbe01b37c54c1b17d53d5ec9b588ce1e2398c919c2c73d187c8436
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2b23ef32e3c59f66ea7acd9b7ff8fe51ea9559ab9ad4bdaca2f1a779bd35857f
[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" "2b23ef32e3c59f66ea7acd9b7ff8fe51ea9559ab9ad4bdaca2f1a779bd35857f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]     Checking strum v0.18.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]  Documenting dfrs v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.27s
[INFO] running `Command { std: "docker" "inspect" "2b23ef32e3c59f66ea7acd9b7ff8fe51ea9559ab9ad4bdaca2f1a779bd35857f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b23ef32e3c59f66ea7acd9b7ff8fe51ea9559ab9ad4bdaca2f1a779bd35857f", kill_on_drop: false }`
[INFO] [stdout] 2b23ef32e3c59f66ea7acd9b7ff8fe51ea9559ab9ad4bdaca2f1a779bd35857f