[INFO] cloning repository https://github.com/NicoBliss/puzzle_15
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NicoBliss/puzzle_15" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicoBliss%2Fpuzzle_15", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicoBliss%2Fpuzzle_15'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2303a3f18311da7db04c5d7bbd32fed0096bbfe9
[INFO] checking NicoBliss/puzzle_15 against try#f3dc08d20a1589b87bde75bb82ee6423307f9bde for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicoBliss%2Fpuzzle_15" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NicoBliss/puzzle_15 on toolchain f3dc08d20a1589b87bde75bb82ee6423307f9bde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NicoBliss/puzzle_15
[INFO] finished tweaking git repo https://github.com/NicoBliss/puzzle_15
[INFO] tweaked toml for git repo https://github.com/NicoBliss/puzzle_15 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/NicoBliss/puzzle_15 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" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bafb3aac1e384502d062a60bd733b1bdc5fe5020b5f000088267511d26367c9
[INFO] running `Command { std: "docker" "start" "-a" "7bafb3aac1e384502d062a60bd733b1bdc5fe5020b5f000088267511d26367c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bafb3aac1e384502d062a60bd733b1bdc5fe5020b5f000088267511d26367c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bafb3aac1e384502d062a60bd733b1bdc5fe5020b5f000088267511d26367c9", kill_on_drop: false }`
[INFO] [stdout] 7bafb3aac1e384502d062a60bd733b1bdc5fe5020b5f000088267511d26367c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f3dc08d20a1589b87bde75bb82ee6423307f9bde" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ae1c13b7bb1792545fa6bdccaa0f4a251c08c0c49de219db89066bc1e05f931
[INFO] running `Command { std: "docker" "start" "-a" "8ae1c13b7bb1792545fa6bdccaa0f4a251c08c0c49de219db89066bc1e05f931", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking puzzle_15 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `minheap::minheap::Heap`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use minheap::minheap::Heap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `minheap::minheap::Heap`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use minheap::minheap::Heap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.57s
[INFO] running `Command { std: "docker" "inspect" "8ae1c13b7bb1792545fa6bdccaa0f4a251c08c0c49de219db89066bc1e05f931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ae1c13b7bb1792545fa6bdccaa0f4a251c08c0c49de219db89066bc1e05f931", kill_on_drop: false }`
[INFO] [stdout] 8ae1c13b7bb1792545fa6bdccaa0f4a251c08c0c49de219db89066bc1e05f931