[INFO] fetching crate metrics-util 0.4.0-alpha.2...
[INFO] documenting metrics-util-0.4.0-alpha.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate metrics-util 0.4.0-alpha.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate metrics-util 0.4.0-alpha.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 metrics-util 0.4.0-alpha.2
[INFO] finished tweaking crates.io crate metrics-util 0.4.0-alpha.2
[INFO] tweaked toml for crates.io crate metrics-util 0.4.0-alpha.2 written to /workspace/builds/worker-5/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 metrics v0.13.0-alpha.3
[INFO] [stderr]   Downloaded metrics-macros v0.1.0-alpha.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] b3be5deed9420a0e42d280f1392d70164d426244d3cfdbbf2779fac5fc0d9af0
[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" "b3be5deed9420a0e42d280f1392d70164d426244d3cfdbbf2779fac5fc0d9af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3be5deed9420a0e42d280f1392d70164d426244d3cfdbbf2779fac5fc0d9af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3be5deed9420a0e42d280f1392d70164d426244d3cfdbbf2779fac5fc0d9af0", kill_on_drop: false }`
[INFO] [stdout] b3be5deed9420a0e42d280f1392d70164d426244d3cfdbbf2779fac5fc0d9af0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 06f835141bb693b9d90497df7ef989815dd55deee238b243b91c39e7788e63a2
[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" "06f835141bb693b9d90497df7ef989815dd55deee238b243b91c39e7788e63a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling metrics v0.13.0-alpha.3
[INFO] [stderr]    Compiling im v14.3.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling metrics-macros v0.1.0-alpha.2
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]  Documenting metrics-util v0.4.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.69s
[INFO] running `Command { std: "docker" "inspect" "06f835141bb693b9d90497df7ef989815dd55deee238b243b91c39e7788e63a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f835141bb693b9d90497df7ef989815dd55deee238b243b91c39e7788e63a2", kill_on_drop: false }`
[INFO] [stdout] 06f835141bb693b9d90497df7ef989815dd55deee238b243b91c39e7788e63a2