[INFO] fetching crate messagebird-async 0.5.0...
[INFO] documenting messagebird-async-0.5.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate messagebird-async 0.5.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate messagebird-async 0.5.0 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 messagebird-async 0.5.0
[INFO] finished tweaking crates.io crate messagebird-async 0.5.0
[INFO] tweaked toml for crates.io crate messagebird-async 0.5.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate messagebird-async 0.5.0 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 49462df8823cc87153894ef94d205a09006a546d4d3dbe8f4c16d4a8b5f0db25
[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" "49462df8823cc87153894ef94d205a09006a546d4d3dbe8f4c16d4a8b5f0db25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49462df8823cc87153894ef94d205a09006a546d4d3dbe8f4c16d4a8b5f0db25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49462df8823cc87153894ef94d205a09006a546d4d3dbe8f4c16d4a8b5f0db25", kill_on_drop: false }`
[INFO] [stdout] 49462df8823cc87153894ef94d205a09006a546d4d3dbe8f4c16d4a8b5f0db25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 1bc8d2985ff2d6cef75a4dd5d3b7dc993ab406c973d3363e899b769bfbb23d7c
[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" "1bc8d2985ff2d6cef75a4dd5d3b7dc993ab406c973d3363e899b769bfbb23d7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking data-encoding v2.2.0
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking serde_plain v0.3.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking serde_url_params v0.2.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking serde_qs v0.5.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]    Compiling enum-primitive-derive v0.1.2
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking webpki v0.18.1
[INFO] [stderr]     Checking sct v0.4.0
[INFO] [stderr]     Checking ct-logs v0.4.0
[INFO] [stderr]     Checking rustls v0.14.0
[INFO] [stderr]     Checking webpki-roots v0.15.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking tokio-rustls v0.8.1
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking common_failures v0.1.1
[INFO] [stderr]     Checking hyper-rustls v0.15.1
[INFO] [stderr]  Documenting messagebird-async v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.64s
[INFO] running `Command { std: "docker" "inspect" "1bc8d2985ff2d6cef75a4dd5d3b7dc993ab406c973d3363e899b769bfbb23d7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc8d2985ff2d6cef75a4dd5d3b7dc993ab406c973d3363e899b769bfbb23d7c", kill_on_drop: false }`
[INFO] [stdout] 1bc8d2985ff2d6cef75a4dd5d3b7dc993ab406c973d3363e899b769bfbb23d7c