[INFO] fetching crate mobc 0.5.12...
[INFO] documenting mobc-0.5.12 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate mobc 0.5.12 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mobc 0.5.12 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 mobc 0.5.12
[INFO] finished tweaking crates.io crate mobc 0.5.12
[INFO] tweaked toml for crates.io crate mobc 0.5.12 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate mobc 0.5.12 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 async-task v1.1.0
[INFO] [stderr]   Downloaded tide v0.5.1
[INFO] [stderr]   Downloaded postgres-protocol v0.5.0-alpha.2
[INFO] [stderr]   Downloaded postgres-types v0.1.0-alpha.2
[INFO] [stderr]   Downloaded tokio-postgres v0.5.0-alpha.2
[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" "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] 8f7fdf518aa0c2eb8ccff1112f7b19caf3e1eb51e103623719e6ebe275b79cac
[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" "8f7fdf518aa0c2eb8ccff1112f7b19caf3e1eb51e103623719e6ebe275b79cac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f7fdf518aa0c2eb8ccff1112f7b19caf3e1eb51e103623719e6ebe275b79cac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f7fdf518aa0c2eb8ccff1112f7b19caf3e1eb51e103623719e6ebe275b79cac", kill_on_drop: false }`
[INFO] [stdout] 8f7fdf518aa0c2eb8ccff1112f7b19caf3e1eb51e103623719e6ebe275b79cac
[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" "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] e5c2dee9c72d6164ea644a6a859769226ccaa32ba96c5a8e7e79c898fe74fd94
[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" "e5c2dee9c72d6164ea644a6a859769226ccaa32ba96c5a8e7e79c898fe74fd94", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking mio v0.6.20
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.0
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]  Documenting mobc v0.5.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.13s
[INFO] running `Command { std: "docker" "inspect" "e5c2dee9c72d6164ea644a6a859769226ccaa32ba96c5a8e7e79c898fe74fd94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c2dee9c72d6164ea644a6a859769226ccaa32ba96c5a8e7e79c898fe74fd94", kill_on_drop: false }`
[INFO] [stdout] e5c2dee9c72d6164ea644a6a859769226ccaa32ba96c5a8e7e79c898fe74fd94