[INFO] fetching crate prometheus-mpd-exporter 0.1.0...
[INFO] checking prometheus-mpd-exporter-0.1.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate prometheus-mpd-exporter 0.1.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate prometheus-mpd-exporter 0.1.0 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus-mpd-exporter 0.1.0
[INFO] finished tweaking crates.io crate prometheus-mpd-exporter 0.1.0
[INFO] tweaked toml for crates.io crate prometheus-mpd-exporter 0.1.0 written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] crate crates.io crate prometheus-mpd-exporter 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustls-native-certs v0.3.0
[INFO] [stderr]   Downloaded sha-1 v0.9.2
[INFO] [stderr]   Downloaded smart-default v0.6.0
[INFO] [stderr]   Downloaded derive_more v0.99.11
[INFO] [stderr]   Downloaded bytestring v0.1.5
[INFO] [stderr]   Downloaded futures v0.3.8
[INFO] [stderr]   Downloaded trust-dns-resolver v0.19.6
[INFO] [stderr]   Downloaded parse-display-derive v0.4.0
[INFO] [stderr]   Downloaded actix-router v0.2.5
[INFO] [stderr]   Downloaded trust-dns-proto v0.19.6
[INFO] [stderr]   Downloaded parse-display v0.4.0
[INFO] [stderr]   Downloaded standback v0.2.14
[INFO] [stderr]   Downloaded async-mpd v0.4.0
[INFO] [stderr]   Downloaded prometheus_exporter_base v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01ce780e87df2616ef2396e75238d06439974fbe114a482c8a5d1239fa62cfb8
[INFO] running `Command { std: "docker" "start" "-a" "01ce780e87df2616ef2396e75238d06439974fbe114a482c8a5d1239fa62cfb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01ce780e87df2616ef2396e75238d06439974fbe114a482c8a5d1239fa62cfb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01ce780e87df2616ef2396e75238d06439974fbe114a482c8a5d1239fa62cfb8", kill_on_drop: false }`
[INFO] [stdout] 01ce780e87df2616ef2396e75238d06439974fbe114a482c8a5d1239fa62cfb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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" "RUSTFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8905d6910a1f1d58069e8cb831db88b853918cd95fbda4dad3da6a9dd2f7e4c7
[INFO] running `Command { std: "docker" "start" "-a" "8905d6910a1f1d58069e8cb831db88b853918cd95fbda4dad3da6a9dd2f7e4c7", kill_on_drop: false }`
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "8905d6910a1f1d58069e8cb831db88b853918cd95fbda4dad3da6a9dd2f7e4c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8905d6910a1f1d58069e8cb831db88b853918cd95fbda4dad3da6a9dd2f7e4c7", kill_on_drop: false }`
[INFO] [stdout] 8905d6910a1f1d58069e8cb831db88b853918cd95fbda4dad3da6a9dd2f7e4c7