[INFO] cloning repository https://github.com/timothyjulian/rust-concurrency-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timothyjulian/rust-concurrency-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-concurrency-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-concurrency-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7899d057cc05a5d4e46440835b3ccacc5ab8682a
[INFO] checking timothyjulian/rust-concurrency-tutorial against try#9961e55b3687a6d0b2bab4af0e5e81494b09be81 for pr-139087-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-concurrency-tutorial" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/timothyjulian/rust-concurrency-tutorial
[INFO] finished tweaking git repo https://github.com/timothyjulian/rust-concurrency-tutorial
[INFO] tweaked toml for git repo https://github.com/timothyjulian/rust-concurrency-tutorial written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/timothyjulian/rust-concurrency-tutorial on toolchain 9961e55b3687a6d0b2bab4af0e5e81494b09be81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/timothyjulian/rust-concurrency-tutorial 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" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking timothyjulian/rust-concurrency-tutorial against try#9961e55b3687a6d0b2bab4af0e5e81494b09be81 for pr-139087-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimothyjulian%2Frust-concurrency-tutorial" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/timothyjulian/rust-concurrency-tutorial
[INFO] finished tweaking git repo https://github.com/timothyjulian/rust-concurrency-tutorial
[INFO] tweaked toml for git repo https://github.com/timothyjulian/rust-concurrency-tutorial written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/timothyjulian/rust-concurrency-tutorial on toolchain 9961e55b3687a6d0b2bab4af0e5e81494b09be81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/timothyjulian/rust-concurrency-tutorial 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" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edf7c0ca02c84c6fa4f81da1116bea71b1d5aa12da5ca57410c51a4019317333
[INFO] running `Command { std: "docker" "start" "-a" "edf7c0ca02c84c6fa4f81da1116bea71b1d5aa12da5ca57410c51a4019317333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edf7c0ca02c84c6fa4f81da1116bea71b1d5aa12da5ca57410c51a4019317333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edf7c0ca02c84c6fa4f81da1116bea71b1d5aa12da5ca57410c51a4019317333", kill_on_drop: false }`
[INFO] [stdout] edf7c0ca02c84c6fa4f81da1116bea71b1d5aa12da5ca57410c51a4019317333
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9961e55b3687a6d0b2bab4af0e5e81494b09be81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dbca031307adacaf0ac69e16a1ccd31e66b78d26c3d97b8b8414b0e9d4596be
[INFO] running `Command { std: "docker" "start" "-a" "8dbca031307adacaf0ac69e16a1ccd31e66b78d26c3d97b8b8414b0e9d4596be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.173
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking rust-concurrency-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.01s
[INFO] running `Command { std: "docker" "inspect" "8dbca031307adacaf0ac69e16a1ccd31e66b78d26c3d97b8b8414b0e9d4596be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dbca031307adacaf0ac69e16a1ccd31e66b78d26c3d97b8b8414b0e9d4596be", kill_on_drop: false }`
[INFO] [stdout] 8dbca031307adacaf0ac69e16a1ccd31e66b78d26c3d97b8b8414b0e9d4596be