[INFO] cloning repository https://github.com/mfontanini/dns-metrics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mfontanini/dns-metrics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfontanini%2Fdns-metrics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfontanini%2Fdns-metrics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49b0eb57870927f48eab4886085e3d5a3c933fc6
[INFO] checking mfontanini/dns-metrics against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfontanini%2Fdns-metrics" "/workspace/builds/worker-44/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-44/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mfontanini/dns-metrics 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 git repo https://github.com/mfontanini/dns-metrics
[INFO] finished tweaking git repo https://github.com/mfontanini/dns-metrics
[INFO] tweaked toml for git repo https://github.com/mfontanini/dns-metrics written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] crate git repo https://github.com/mfontanini/dns-metrics 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 data-encoding v2.3.1
[INFO] [stderr]   Downloaded ctr v0.6.0
[INFO] [stderr]   Downloaded hkdf v0.10.0
[INFO] [stderr]   Downloaded aes v0.6.0
[INFO] [stderr]   Downloaded aes-gcm v0.8.0
[INFO] [stderr]   Downloaded async-lock v2.3.0
[INFO] [stderr]   Downloaded smol v1.2.5
[INFO] [stderr]   Downloaded async-h1 v2.2.1
[INFO] [stderr]   Downloaded async-fs v1.5.0
[INFO] [stderr]   Downloaded smallvec v1.5.1
[INFO] [stderr]   Downloaded aes-soft v0.6.4
[INFO] [stderr]   Downloaded etherparse v0.9.0
[INFO] [stderr]   Downloaded async-net v1.5.0
[INFO] [stderr]   Downloaded signal-hook v0.1.16
[INFO] [stderr]   Downloaded parking_lot_core v0.8.1
[INFO] [stderr]   Downloaded async-sse v4.1.0
[INFO] [stderr]   Downloaded async-process v1.0.1
[INFO] [stderr]   Downloaded http-types v2.9.0
[INFO] [stderr]   Downloaded http-client v6.2.0
[INFO] [stderr]   Downloaded pcap-sys v0.1.3
[INFO] [stderr]   Downloaded tide v0.15.0
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.2
[INFO] [stderr]   Downloaded polyval v0.4.3
[INFO] [stderr]   Downloaded protobuf v2.18.1
[INFO] [stderr]   Downloaded aesni v0.10.0
[INFO] [stderr]   Downloaded serde_qs v0.7.2
[INFO] [stderr]   Downloaded pcap-async v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 02040a5c844f78320178511684fd8babcf52d6bad446d35f3d26a3681f0790b9
[INFO] running `Command { std: "docker" "start" "-a" "02040a5c844f78320178511684fd8babcf52d6bad446d35f3d26a3681f0790b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02040a5c844f78320178511684fd8babcf52d6bad446d35f3d26a3681f0790b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02040a5c844f78320178511684fd8babcf52d6bad446d35f3d26a3681f0790b9", kill_on_drop: false }`
[INFO] [stdout] 02040a5c844f78320178511684fd8babcf52d6bad446d35f3d26a3681f0790b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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] 3d760ea998e3ad58637ecaccd21bc273bd39ccbf9b6f2adb654146a1f6ac643e
[INFO] running `Command { std: "docker" "start" "-a" "3d760ea998e3ad58637ecaccd21bc273bd39ccbf9b6f2adb654146a1f6ac643e", 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] 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" "3d760ea998e3ad58637ecaccd21bc273bd39ccbf9b6f2adb654146a1f6ac643e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d760ea998e3ad58637ecaccd21bc273bd39ccbf9b6f2adb654146a1f6ac643e", kill_on_drop: false }`
[INFO] [stdout] 3d760ea998e3ad58637ecaccd21bc273bd39ccbf9b6f2adb654146a1f6ac643e