[INFO] fetching crate metrics-runtime 0.13.1...
[INFO] documenting metrics-runtime-0.13.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate metrics-runtime 0.13.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate metrics-runtime 0.13.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-runtime 0.13.1
[INFO] finished tweaking crates.io crate metrics-runtime 0.13.1
[INFO] tweaked toml for crates.io crate metrics-runtime 0.13.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate metrics-runtime 0.13.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73263505b4ea495c58fe3f675504309ac1dcd4405dfb7cdf57393862bc681a38
[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" "73263505b4ea495c58fe3f675504309ac1dcd4405dfb7cdf57393862bc681a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73263505b4ea495c58fe3f675504309ac1dcd4405dfb7cdf57393862bc681a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73263505b4ea495c58fe3f675504309ac1dcd4405dfb7cdf57393862bc681a38", kill_on_drop: false }`
[INFO] [stdout] 73263505b4ea495c58fe3f675504309ac1dcd4405dfb7cdf57393862bc681a38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0aefd570de8e39b5babf8895e56b693e18e6a164fda352fe02bb82bdd43c71e3
[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" "0aefd570de8e39b5babf8895e56b693e18e6a164fda352fe02bb82bdd43c71e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking metrics-core v0.5.2
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking smallvec v1.4.1
[INFO] [stderr]    Compiling metrics v0.12.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking atomic-shim v0.1.0
[INFO] [stderr]     Checking tracing-core v0.1.11
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking hdrhistogram v6.3.4
[INFO] [stderr]     Checking quanta v0.3.2
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking tracing v0.1.16
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking sized-chunks v0.6.2
[INFO] [stderr]     Checking metrics-util v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking metrics-observer-prometheus v0.1.4
[INFO] [stderr]     Checking metrics-observer-yaml v0.1.1
[INFO] [stderr]     Checking metrics-observer-json v0.1.1
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking metrics-exporter-log v0.4.0
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking metrics-exporter-http v0.3.0
[INFO] [stderr]  Documenting metrics-runtime v0.13.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.79s
[INFO] running `Command { std: "docker" "inspect" "0aefd570de8e39b5babf8895e56b693e18e6a164fda352fe02bb82bdd43c71e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aefd570de8e39b5babf8895e56b693e18e6a164fda352fe02bb82bdd43c71e3", kill_on_drop: false }`
[INFO] [stdout] 0aefd570de8e39b5babf8895e56b693e18e6a164fda352fe02bb82bdd43c71e3