[INFO] cloning repository https://github.com/snoopcheri/knight-path-problem-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snoopcheri/knight-path-problem-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnoopcheri%2Fknight-path-problem-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnoopcheri%2Fknight-path-problem-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 915e790a45f55c9f66b53978c94a72df28848ae4
[INFO] checking snoopcheri/knight-path-problem-rust against master#3cdcdaf31b45f8045164aae9604573d23091970b for pr-122267
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnoopcheri%2Fknight-path-problem-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snoopcheri/knight-path-problem-rust on toolchain 3cdcdaf31b45f8045164aae9604573d23091970b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3cdcdaf31b45f8045164aae9604573d23091970b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snoopcheri/knight-path-problem-rust
[INFO] finished tweaking git repo https://github.com/snoopcheri/knight-path-problem-rust
[INFO] tweaked toml for git repo https://github.com/snoopcheri/knight-path-problem-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/snoopcheri/knight-path-problem-rust 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" "+3cdcdaf31b45f8045164aae9604573d23091970b" "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 snoopcheri/knight-path-problem-rust against try#05804f728f276cf7ecedbf71c814df440d37f293 for pr-122267
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnoopcheri%2Fknight-path-problem-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snoopcheri/knight-path-problem-rust on toolchain 05804f728f276cf7ecedbf71c814df440d37f293
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+05804f728f276cf7ecedbf71c814df440d37f293" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snoopcheri/knight-path-problem-rust
[INFO] finished tweaking git repo https://github.com/snoopcheri/knight-path-problem-rust
[INFO] tweaked toml for git repo https://github.com/snoopcheri/knight-path-problem-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/snoopcheri/knight-path-problem-rust 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" "+05804f728f276cf7ecedbf71c814df440d37f293" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+05804f728f276cf7ecedbf71c814df440d37f293" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfec55ab1dddd7bc7c3847e5c9223e32db70c2b81e00e82021cc1f538d48da23
[INFO] running `Command { std: "docker" "start" "-a" "dfec55ab1dddd7bc7c3847e5c9223e32db70c2b81e00e82021cc1f538d48da23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfec55ab1dddd7bc7c3847e5c9223e32db70c2b81e00e82021cc1f538d48da23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfec55ab1dddd7bc7c3847e5c9223e32db70c2b81e00e82021cc1f538d48da23", kill_on_drop: false }`
[INFO] [stdout] dfec55ab1dddd7bc7c3847e5c9223e32db70c2b81e00e82021cc1f538d48da23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+05804f728f276cf7ecedbf71c814df440d37f293" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8b7a581763ea06830c415621535151ddc5f618d0441ec40c01121da0370eff7
[INFO] running `Command { std: "docker" "start" "-a" "d8b7a581763ea06830c415621535151ddc5f618d0441ec40c01121da0370eff7", kill_on_drop: false }`
[INFO] [stderr]     Checking knight-path-problem-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lib::solver::Solver`
[INFO] [stdout]  --> src/lib/prelude.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use lib::solver::Solver;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Solver` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lib::prelude::*;
[INFO] [stdout]   |     --------------- the item `Solver` is already imported here
[INFO] [stdout] 5 | use crate::lib::board::Color::{BLACK, WHITE};
[INFO] [stdout] 6 | use crate::lib::solver::Solver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lib::solver::Solver`
[INFO] [stdout]  --> src/lib/prelude.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use lib::solver::Solver;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `E4`
[INFO] [stdout]   --> src/lib/moves_generator.rs:49:52
[INFO] [stdout]    |
[INFO] [stdout] 49 |     use crate::{A3, B1, B5, BLACK, C2, C3, C4, D2, E4, WHITE};
[INFO] [stdout]    |                                                    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Solver` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lib::prelude::*;
[INFO] [stdout]   |     --------------- the item `Solver` is already imported here
[INFO] [stdout] 5 | use crate::lib::board::Color::{BLACK, WHITE};
[INFO] [stdout] 6 | use crate::lib::solver::Solver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `count_ones` are never used
[INFO] [stdout]   --> src/lib/bitboard.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl BitBoard {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 17 |     pub fn new(val: u64) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn count_ones(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "d8b7a581763ea06830c415621535151ddc5f618d0441ec40c01121da0370eff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b7a581763ea06830c415621535151ddc5f618d0441ec40c01121da0370eff7", kill_on_drop: false }`
[INFO] [stdout] d8b7a581763ea06830c415621535151ddc5f618d0441ec40c01121da0370eff7