[INFO] cloning repository https://github.com/112batuhan/codewars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/112batuhan/codewars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F112batuhan%2Fcodewars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F112batuhan%2Fcodewars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18262021ed2efb4a13cb1e9cea808ec8c5b3432f
[INFO] checking 112batuhan/codewars/18262021ed2efb4a13cb1e9cea808ec8c5b3432f against master#8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F112batuhan%2Fcodewars" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/112batuhan/codewars on toolchain 8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/112batuhan/codewars
[INFO] finished tweaking git repo https://github.com/112batuhan/codewars
[INFO] tweaked toml for git repo https://github.com/112batuhan/codewars written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/112batuhan/codewars 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" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3478955cf0314dd4dfd7e3134b2b55915e028d8e8a11b3cf09112d2587205dcf
[INFO] running `Command { std: "docker" "start" "-a" "3478955cf0314dd4dfd7e3134b2b55915e028d8e8a11b3cf09112d2587205dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3478955cf0314dd4dfd7e3134b2b55915e028d8e8a11b3cf09112d2587205dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3478955cf0314dd4dfd7e3134b2b55915e028d8e8a11b3cf09112d2587205dcf", kill_on_drop: false }`
[INFO] [stdout] 3478955cf0314dd4dfd7e3134b2b55915e028d8e8a11b3cf09112d2587205dcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9d32ffb6e7b9e975c74e0e85730b355f0f95c9c7291031e0f0582020b11486f
[INFO] running `Command { std: "docker" "start" "-a" "a9d32ffb6e7b9e975c74e0e85730b355f0f95c9c7291031e0f0582020b11486f", kill_on_drop: false }`
[INFO] [stderr]     Checking codewars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc::sync_channel`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::sync_channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::sync_channel`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::sync_channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/solutions/pyramid_slide_down.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn calculate(&self, node: Option<Arc<Mutex<Node>>>) -> u16 {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree_lock`
[INFO] [stdout]    --> src/solutions/pyramid_slide_down.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let tree_lock = tree_root.lock().unwrap();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/solutions/pyramid_slide_down.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn calculate(&self, node: Option<Arc<Mutex<Node>>>) -> u16 {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree_lock`
[INFO] [stdout]    --> src/solutions/pyramid_slide_down.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let tree_lock = tree_root.lock().unwrap();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "a9d32ffb6e7b9e975c74e0e85730b355f0f95c9c7291031e0f0582020b11486f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d32ffb6e7b9e975c74e0e85730b355f0f95c9c7291031e0f0582020b11486f", kill_on_drop: false }`
[INFO] [stdout] a9d32ffb6e7b9e975c74e0e85730b355f0f95c9c7291031e0f0582020b11486f