[INFO] cloning repository https://github.com/Harmful-Alchemist/rukanren
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Harmful-Alchemist/rukanren" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarmful-Alchemist%2Frukanren", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarmful-Alchemist%2Frukanren'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee3ab02f4ca881467d136a68171907f3b9072e2b
[INFO] checking Harmful-Alchemist/rukanren against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarmful-Alchemist%2Frukanren" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Harmful-Alchemist/rukanren
[INFO] finished tweaking git repo https://github.com/Harmful-Alchemist/rukanren
[INFO] tweaked toml for git repo https://github.com/Harmful-Alchemist/rukanren written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Harmful-Alchemist/rukanren on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Harmful-Alchemist/rukanren 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" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "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
[INFO] checking Harmful-Alchemist/rukanren against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarmful-Alchemist%2Frukanren" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Harmful-Alchemist/rukanren
[INFO] finished tweaking git repo https://github.com/Harmful-Alchemist/rukanren
[INFO] tweaked toml for git repo https://github.com/Harmful-Alchemist/rukanren written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Harmful-Alchemist/rukanren on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Harmful-Alchemist/rukanren 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" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "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-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923
[INFO] running `Command { std: "docker" "start" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923" "/opt/rustwide/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923" "/opt/rustwide/cargo-home/bin/cargo" "+4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking ukanren v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `reify_state` is never used
[INFO] [stdout]    --> src/main.rs:479:4
[INFO] [stdout]     |
[INFO] [stdout] 479 | fn reify_state<T>((s, _c): (Substitution<T>, i32)) -> Vec<Term<T>>
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `walk_star` is never used
[INFO] [stdout]    --> src/main.rs:492:4
[INFO] [stdout]     |
[INFO] [stdout] 492 | fn walk_star<T>(x: Rc<RefCell<Term<T>>>, s: Substitution<T>) -> Vec<Term<T>>
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reify_state` is never used
[INFO] [stdout]    --> src/main.rs:479:4
[INFO] [stdout]     |
[INFO] [stdout] 479 | fn reify_state<T>((s, _c): (Substitution<T>, i32)) -> Vec<Term<T>>
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `walk_star` is never used
[INFO] [stdout]    --> src/main.rs:492:4
[INFO] [stdout]     |
[INFO] [stdout] 492 | fn walk_star<T>(x: Rc<RefCell<Term<T>>>, s: Substitution<T>) -> Vec<Term<T>>
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923", kill_on_drop: false }`
[INFO] [stdout] 1b8b2ed216cfb60484876ae3a7fa77b80b504d096b3878fa28326ab590e99923
