[INFO] fetching crate mingrep_cx 0.1.0...
[INFO] checking mingrep_cx-0.1.0 against master#aa067fb984d36462548bb785da221bfaf38253f0 for pr-122470
[INFO] extracting crate mingrep_cx 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mingrep_cx 0.1.0 on toolchain aa067fb984d36462548bb785da221bfaf38253f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mingrep_cx 0.1.0
[INFO] finished tweaking crates.io crate mingrep_cx 0.1.0
[INFO] tweaked toml for crates.io crate mingrep_cx 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate mingrep_cx 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c7cdecc967881fc2690963614326e95192259378d4e31e6861b11c4df3639c0
[INFO] running `Command { std: "docker" "start" "-a" "3c7cdecc967881fc2690963614326e95192259378d4e31e6861b11c4df3639c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c7cdecc967881fc2690963614326e95192259378d4e31e6861b11c4df3639c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c7cdecc967881fc2690963614326e95192259378d4e31e6861b11c4df3639c0", kill_on_drop: false }`
[INFO] [stdout] 3c7cdecc967881fc2690963614326e95192259378d4e31e6861b11c4df3639c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aa067fb984d36462548bb785da221bfaf38253f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c795d1e119624f9c7dffbf1ccdf75b091a243a4e8b49928785c857eec09cf77a
[INFO] running `Command { std: "docker" "start" "-a" "c795d1e119624f9c7dffbf1ccdf75b091a243a4e8b49928785c857eec09cf77a", kill_on_drop: false }`
[INFO] [stderr]     Checking mingrep_cx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "c795d1e119624f9c7dffbf1ccdf75b091a243a4e8b49928785c857eec09cf77a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c795d1e119624f9c7dffbf1ccdf75b091a243a4e8b49928785c857eec09cf77a", kill_on_drop: false }`
[INFO] [stdout] c795d1e119624f9c7dffbf1ccdf75b091a243a4e8b49928785c857eec09cf77a
[ERROR] this task or one of its parent failed!
[ERROR] error sending request for url (https://crater.rust-lang.org/agent-api/record-progress): connection closed before message completed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking mingrep_cx-0.1.0 against try#707d6562f55b55a7aab4ab3a904997116b358314 for pr-122470
[INFO] extracting crate mingrep_cx 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate mingrep_cx 0.1.0 on toolchain 707d6562f55b55a7aab4ab3a904997116b358314
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+707d6562f55b55a7aab4ab3a904997116b358314" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mingrep_cx 0.1.0
[INFO] finished tweaking crates.io crate mingrep_cx 0.1.0
[INFO] tweaked toml for crates.io crate mingrep_cx 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate mingrep_cx 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+707d6562f55b55a7aab4ab3a904997116b358314" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+707d6562f55b55a7aab4ab3a904997116b358314" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7a6fd0058f8beff4f5f227882b016a2f0e5e216e27e8a8b71b3e0ae3cd7f904
[INFO] running `Command { std: "docker" "start" "-a" "d7a6fd0058f8beff4f5f227882b016a2f0e5e216e27e8a8b71b3e0ae3cd7f904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7a6fd0058f8beff4f5f227882b016a2f0e5e216e27e8a8b71b3e0ae3cd7f904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7a6fd0058f8beff4f5f227882b016a2f0e5e216e27e8a8b71b3e0ae3cd7f904", kill_on_drop: false }`
[INFO] [stdout] d7a6fd0058f8beff4f5f227882b016a2f0e5e216e27e8a8b71b3e0ae3cd7f904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+707d6562f55b55a7aab4ab3a904997116b358314" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f85de74a8b0bbb3a8c04173af3321a9d618b27066ea26062b54322bf61a9e7e
[INFO] running `Command { std: "docker" "start" "-a" "6f85de74a8b0bbb3a8c04173af3321a9d618b27066ea26062b54322bf61a9e7e", kill_on_drop: false }`
[INFO] [stderr]     Checking mingrep_cx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "6f85de74a8b0bbb3a8c04173af3321a9d618b27066ea26062b54322bf61a9e7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f85de74a8b0bbb3a8c04173af3321a9d618b27066ea26062b54322bf61a9e7e", kill_on_drop: false }`
[INFO] [stdout] 6f85de74a8b0bbb3a8c04173af3321a9d618b27066ea26062b54322bf61a9e7e