[INFO] fetching crate c-ares-resolver 7.1.2...
[INFO] documenting c-ares-resolver-7.1.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate c-ares-resolver 7.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate c-ares-resolver 7.1.2 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 c-ares-resolver 7.1.2
[INFO] finished tweaking crates.io crate c-ares-resolver 7.1.2
[INFO] tweaked toml for crates.io crate c-ares-resolver 7.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate c-ares-resolver 7.1.2 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c-ares-sys v5.0.0
[INFO] [stderr]   Downloaded c-ares v7.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 1d5e644a4efd01815165ec5c68fe25cee8f4a25a3590b34260560655b1db7a9e
[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" "1d5e644a4efd01815165ec5c68fe25cee8f4a25a3590b34260560655b1db7a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d5e644a4efd01815165ec5c68fe25cee8f4a25a3590b34260560655b1db7a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5e644a4efd01815165ec5c68fe25cee8f4a25a3590b34260560655b1db7a9e", kill_on_drop: false }`
[INFO] [stdout] 1d5e644a4efd01815165ec5c68fe25cee8f4a25a3590b34260560655b1db7a9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] c3491bd2c4f48672b9e87cbad4e536e5359d8762e621ad2a524deed6c2ee25fc
[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" "c3491bd2c4f48672b9e87cbad4e536e5359d8762e621ad2a524deed6c2ee25fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking c-types v2.0.2
[INFO] [stderr]     Checking polling v0.1.5
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling c-ares-sys v5.0.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking c-ares v7.2.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]  Documenting c-ares-resolver v7.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.23s
[INFO] running `Command { std: "docker" "inspect" "c3491bd2c4f48672b9e87cbad4e536e5359d8762e621ad2a524deed6c2ee25fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3491bd2c4f48672b9e87cbad4e536e5359d8762e621ad2a524deed6c2ee25fc", kill_on_drop: false }`
[INFO] [stdout] c3491bd2c4f48672b9e87cbad4e536e5359d8762e621ad2a524deed6c2ee25fc