[INFO] fetching crate sodoku 0.0.1...
[INFO] checking sodoku-0.0.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate sodoku 0.0.1 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate sodoku 0.0.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sodoku 0.0.1
[INFO] finished tweaking crates.io crate sodoku 0.0.1
[INFO] tweaked toml for crates.io crate sodoku 0.0.1 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate crates.io crate sodoku 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f310b0b40f724e3648aaf8eb134dd39bb309ca0df074e0e08a5924248420baa5
[INFO] running `Command { std: "docker" "start" "-a" "f310b0b40f724e3648aaf8eb134dd39bb309ca0df074e0e08a5924248420baa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f310b0b40f724e3648aaf8eb134dd39bb309ca0df074e0e08a5924248420baa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f310b0b40f724e3648aaf8eb134dd39bb309ca0df074e0e08a5924248420baa5", kill_on_drop: false }`
[INFO] [stdout] f310b0b40f724e3648aaf8eb134dd39bb309ca0df074e0e08a5924248420baa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a993956582d966d82d801ac6f00258993440a0bd742098fffb64cc2dcb897e1e
[INFO] running `Command { std: "docker" "start" "-a" "a993956582d966d82d801ac6f00258993440a0bd742098fffb64cc2dcb897e1e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking sodoku v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/dec.rs:36:28
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn with_difficulty(score: u8) -> Self {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/dec.rs:36:28
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn with_difficulty(score: u8) -> Self {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.65s
[INFO] running `Command { std: "docker" "inspect" "a993956582d966d82d801ac6f00258993440a0bd742098fffb64cc2dcb897e1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a993956582d966d82d801ac6f00258993440a0bd742098fffb64cc2dcb897e1e", kill_on_drop: false }`
[INFO] [stdout] a993956582d966d82d801ac6f00258993440a0bd742098fffb64cc2dcb897e1e