[INFO] cloning repository https://github.com/ahmadaliadeel/uw-task1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahmadaliadeel/uw-task1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmadaliadeel%2Fuw-task1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmadaliadeel%2Fuw-task1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 967e8d09b9a376efccf91bb8802eb872088fbbcb
[INFO] checking ahmadaliadeel/uw-task1 against try#26ad8a85dc4eed299af809e52f278da81e284602 for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmadaliadeel%2Fuw-task1" "/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/ahmadaliadeel/uw-task1 on toolchain 26ad8a85dc4eed299af809e52f278da81e284602
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ahmadaliadeel/uw-task1
[INFO] finished tweaking git repo https://github.com/ahmadaliadeel/uw-task1
[INFO] tweaked toml for git repo https://github.com/ahmadaliadeel/uw-task1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ahmadaliadeel/uw-task1 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" "+26ad8a85dc4eed299af809e52f278da81e284602" "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 ahmadaliadeel/uw-task1 against try#26ad8a85dc4eed299af809e52f278da81e284602 for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahmadaliadeel%2Fuw-task1" "/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/ahmadaliadeel/uw-task1 on toolchain 26ad8a85dc4eed299af809e52f278da81e284602
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ahmadaliadeel/uw-task1
[INFO] finished tweaking git repo https://github.com/ahmadaliadeel/uw-task1
[INFO] tweaked toml for git repo https://github.com/ahmadaliadeel/uw-task1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ahmadaliadeel/uw-task1 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" "+26ad8a85dc4eed299af809e52f278da81e284602" "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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09a11a5c846ff5caef80445c307e0565cb33f9bb65f115b0710268d0379df6a5
[INFO] running `Command { std: "docker" "start" "-a" "09a11a5c846ff5caef80445c307e0565cb33f9bb65f115b0710268d0379df6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09a11a5c846ff5caef80445c307e0565cb33f9bb65f115b0710268d0379df6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a11a5c846ff5caef80445c307e0565cb33f9bb65f115b0710268d0379df6a5", kill_on_drop: false }`
[INFO] [stdout] 09a11a5c846ff5caef80445c307e0565cb33f9bb65f115b0710268d0379df6a5
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 993ddf5ab3eb4d3d3180534d30b3b40544ce421e39a41f4310fbc417ddf95177
[INFO] running `Command { std: "docker" "start" "-a" "993ddf5ab3eb4d3d3180534d30b3b40544ce421e39a41f4310fbc417ddf95177", kill_on_drop: false }`
[INFO] [stderr]     Checking uw-rust-task-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]  --> src/lib.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Value
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains` is never used
[INFO] [stdout]   --> src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn contains(list : &HashSet<Value>, value : u32) -> bool
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attempt` is never used
[INFO] [stdout]   --> src/lib.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn attempt(available2 : &Vec<u32>, allowed : &HashSet<Value>, prefered : &mut Vec<Value>) -> HashSet<u32>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "993ddf5ab3eb4d3d3180534d30b3b40544ce421e39a41f4310fbc417ddf95177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "993ddf5ab3eb4d3d3180534d30b3b40544ce421e39a41f4310fbc417ddf95177", kill_on_drop: false }`
[INFO] [stdout] 993ddf5ab3eb4d3d3180534d30b3b40544ce421e39a41f4310fbc417ddf95177