[INFO] cloning repository https://github.com/steveklabnik/geekout2016
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steveklabnik/geekout2016" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fgeekout2016", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fgeekout2016'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f68ed9e6e5e7c6accac9a7d606788f834f346d6f
[INFO] checking steveklabnik/geekout2016 against master#3f28fe133475ec5faf3413b556bf3cfb0d51336c for pr-112365-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fgeekout2016" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steveklabnik/geekout2016 on toolchain 3f28fe133475ec5faf3413b556bf3cfb0d51336c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f28fe133475ec5faf3413b556bf3cfb0d51336c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/steveklabnik/geekout2016
[INFO] finished tweaking git repo https://github.com/steveklabnik/geekout2016
[INFO] tweaked toml for git repo https://github.com/steveklabnik/geekout2016 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/steveklabnik/geekout2016 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" "+3f28fe133475ec5faf3413b556bf3cfb0d51336c" "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 steveklabnik/geekout2016 against try#2eb702bf20a12c67e5629a5c82890c910c267bd9 for pr-112365-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fgeekout2016" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steveklabnik/geekout2016 on toolchain 2eb702bf20a12c67e5629a5c82890c910c267bd9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/steveklabnik/geekout2016
[INFO] finished tweaking git repo https://github.com/steveklabnik/geekout2016
[INFO] tweaked toml for git repo https://github.com/steveklabnik/geekout2016 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/steveklabnik/geekout2016 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" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.4.15
[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" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97d03e998b6fc49b4230fafabe5c04ec254930bcd038c00371a1ac538505c99f
[INFO] running `Command { std: "docker" "start" "-a" "97d03e998b6fc49b4230fafabe5c04ec254930bcd038c00371a1ac538505c99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97d03e998b6fc49b4230fafabe5c04ec254930bcd038c00371a1ac538505c99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97d03e998b6fc49b4230fafabe5c04ec254930bcd038c00371a1ac538505c99f", kill_on_drop: false }`
[INFO] [stdout] 97d03e998b6fc49b4230fafabe5c04ec254930bcd038c00371a1ac538505c99f
[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" "+2eb702bf20a12c67e5629a5c82890c910c267bd9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08e2821c86c7e63375c64af19cba7e2ba1e051d97b55cba9ec9945fc8e41b986
[INFO] running `Command { std: "docker" "start" "-a" "08e2821c86c7e63375c64af19cba7e2ba1e051d97b55cba9ec9945fc8e41b986", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.7
[INFO] [stderr]     Checking crossbeam v0.2.9
[INFO] [stderr]     Checking itertools v0.4.15
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking num_cpus v0.2.12
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking rayon v0.4.0
[INFO] [stderr]     Checking geekout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/bin/01.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xs`
[INFO] [stdout]  --> src/bin/01.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let xs = vec![1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_xs`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/bin/01.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xs`
[INFO] [stdout]  --> src/bin/01.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let xs = vec![1, 2, 3, 4, 5];
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_xs`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "08e2821c86c7e63375c64af19cba7e2ba1e051d97b55cba9ec9945fc8e41b986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e2821c86c7e63375c64af19cba7e2ba1e051d97b55cba9ec9945fc8e41b986", kill_on_drop: false }`
[INFO] [stdout] 08e2821c86c7e63375c64af19cba7e2ba1e051d97b55cba9ec9945fc8e41b986