[INFO] fetching crate mdns-client 0.1.0...
[INFO] checking mdns-client-0.1.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate mdns-client 0.1.0 into /workspace/builds/worker-79/source
[INFO] validating manifest of crates.io crate mdns-client 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 mdns-client 0.1.0
[INFO] finished tweaking crates.io crate mdns-client 0.1.0
[INFO] tweaked toml for crates.io crate mdns-client 0.1.0 written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syntex_syntax v0.42.0
[INFO] [stderr]   Downloaded pnet_macros v0.27.2
[INFO] [stderr]   Downloaded glob v0.2.11
[INFO] [stderr]   Downloaded dns-message-parser v0.4.6
[INFO] [stderr]   Downloaded ipnetwork v0.17.0
[INFO] [stderr]   Downloaded pnet_datalink v0.27.2
[INFO] [stderr]   Downloaded pnet_base v0.27.2
[INFO] [stderr]   Downloaded pnet_transport v0.27.2
[INFO] [stderr]   Downloaded pnet v0.27.2
[INFO] [stderr]   Downloaded pnet_macros_support v0.27.2
[INFO] [stderr]   Downloaded syntex_pos v0.42.0
[INFO] [stderr]   Downloaded syntex_errors v0.42.0
[INFO] [stderr]   Downloaded pnet_packet v0.27.2
[INFO] [stderr]   Downloaded pnet_sys v0.27.2
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded syntex v0.42.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] b75429204f2cfe5ab8f0308a325810e49f7844f3a67b11a078034eb1b94757c6
[INFO] running `Command { std: "docker" "start" "-a" "b75429204f2cfe5ab8f0308a325810e49f7844f3a67b11a078034eb1b94757c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b75429204f2cfe5ab8f0308a325810e49f7844f3a67b11a078034eb1b94757c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b75429204f2cfe5ab8f0308a325810e49f7844f3a67b11a078034eb1b94757c6", kill_on_drop: false }`
[INFO] [stdout] b75429204f2cfe5ab8f0308a325810e49f7844f3a67b11a078034eb1b94757c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 01c377f46c33a9b6ffedf6c73e22044775a880a8eea5f6b1fefef13173b52f33
[INFO] running `Command { std: "docker" "start" "-a" "01c377f46c33a9b6ffedf6c73e22044775a880a8eea5f6b1fefef13173b52f33", 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" "01c377f46c33a9b6ffedf6c73e22044775a880a8eea5f6b1fefef13173b52f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c377f46c33a9b6ffedf6c73e22044775a880a8eea5f6b1fefef13173b52f33", kill_on_drop: false }`
[INFO] [stdout] 01c377f46c33a9b6ffedf6c73e22044775a880a8eea5f6b1fefef13173b52f33