[INFO] cloning repository https://github.com/rick-learns-rust/structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rick-learns-rust/structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frick-learns-rust%2Fstructures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frick-learns-rust%2Fstructures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f786a3d9b561c7615790911769d66037a6d19cc
[INFO] checking rick-learns-rust/structures against master#a42d94ebb883116f2867cbe3016d9bde9ca6d3f7 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frick-learns-rust%2Fstructures" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rick-learns-rust/structures on toolchain a42d94ebb883116f2867cbe3016d9bde9ca6d3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rick-learns-rust/structures
[INFO] finished tweaking git repo https://github.com/rick-learns-rust/structures
[INFO] tweaked toml for git repo https://github.com/rick-learns-rust/structures written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rick-learns-rust/structures 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" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "fetch" "--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 rick-learns-rust/structures against try#031b389f0c31c0f91c9464d26313ae513dbe8d36 for pr-117593
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frick-learns-rust%2Fstructures" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rick-learns-rust/structures on toolchain 031b389f0c31c0f91c9464d26313ae513dbe8d36
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rick-learns-rust/structures
[INFO] finished tweaking git repo https://github.com/rick-learns-rust/structures
[INFO] tweaked toml for git repo https://github.com/rick-learns-rust/structures written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rick-learns-rust/structures 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" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d88f26398ff49f3bc50539088d4a22c75f0ef7890ecadaf0e1f7f69f5cc84d6d
[INFO] running `Command { std: "docker" "start" "-a" "d88f26398ff49f3bc50539088d4a22c75f0ef7890ecadaf0e1f7f69f5cc84d6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d88f26398ff49f3bc50539088d4a22c75f0ef7890ecadaf0e1f7f69f5cc84d6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88f26398ff49f3bc50539088d4a22c75f0ef7890ecadaf0e1f7f69f5cc84d6d", kill_on_drop: false }`
[INFO] [stdout] d88f26398ff49f3bc50539088d4a22c75f0ef7890ecadaf0e1f7f69f5cc84d6d
[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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc137520b13c3cf689a1e568582e9cee80c6dda99451e43da43fcbd32c1baa5f
[INFO] running `Command { std: "docker" "start" "-a" "bc137520b13c3cf689a1e568582e9cee80c6dda99451e43da43fcbd32c1baa5f", kill_on_drop: false }`
[INFO] [stderr]     Checking structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "bc137520b13c3cf689a1e568582e9cee80c6dda99451e43da43fcbd32c1baa5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc137520b13c3cf689a1e568582e9cee80c6dda99451e43da43fcbd32c1baa5f", kill_on_drop: false }`
[INFO] [stdout] bc137520b13c3cf689a1e568582e9cee80c6dda99451e43da43fcbd32c1baa5f