[INFO] fetching crate netx 0.0.1...
[INFO] checking netx-0.0.1 against master#c3def263a44e07e09ae6d57abfc8650227fb4972 for pr-118833
[INFO] extracting crate netx 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate netx 0.0.1 on toolchain c3def263a44e07e09ae6d57abfc8650227fb4972
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netx 0.0.1
[INFO] finished tweaking crates.io crate netx 0.0.1
[INFO] tweaked toml for crates.io crate netx 0.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking netx-0.0.1 against try#29596578cb5035fa2b7ac7fbdfea23fab38836e7 for pr-118833
[INFO] extracting crate netx 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate netx 0.0.1 on toolchain 29596578cb5035fa2b7ac7fbdfea23fab38836e7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netx 0.0.1
[INFO] finished tweaking crates.io crate netx 0.0.1
[INFO] tweaked toml for crates.io crate netx 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 455388f12b3ed0a36932b806508f2048cc0e09fae42d58d685f98cec66a76d4b
[INFO] running `Command { std: "docker" "start" "-a" "455388f12b3ed0a36932b806508f2048cc0e09fae42d58d685f98cec66a76d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "455388f12b3ed0a36932b806508f2048cc0e09fae42d58d685f98cec66a76d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455388f12b3ed0a36932b806508f2048cc0e09fae42d58d685f98cec66a76d4b", kill_on_drop: false }`
[INFO] [stdout] 455388f12b3ed0a36932b806508f2048cc0e09fae42d58d685f98cec66a76d4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+29596578cb5035fa2b7ac7fbdfea23fab38836e7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11157447e91074ab71f0940eac9dfba477dff80cf769974ec585e22a45193bd5
[INFO] running `Command { std: "docker" "start" "-a" "11157447e91074ab71f0940eac9dfba477dff80cf769974ec585e22a45193bd5", kill_on_drop: false }`
[INFO] [stderr]     Checking netx v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "11157447e91074ab71f0940eac9dfba477dff80cf769974ec585e22a45193bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11157447e91074ab71f0940eac9dfba477dff80cf769974ec585e22a45193bd5", kill_on_drop: false }`
[INFO] [stdout] 11157447e91074ab71f0940eac9dfba477dff80cf769974ec585e22a45193bd5