[INFO] cloning repository https://github.com/jovinlidan/minesweeper-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jovinlidan/minesweeper-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovinlidan%2Fminesweeper-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovinlidan%2Fminesweeper-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5540edb68d819aea547f81cad828359e5402fff8
[INFO] checking jovinlidan/minesweeper-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovinlidan%2Fminesweeper-rs" "/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/jovinlidan/minesweeper-rs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jovinlidan/minesweeper-rs
[INFO] finished tweaking git repo https://github.com/jovinlidan/minesweeper-rs
[INFO] tweaked toml for git repo https://github.com/jovinlidan/minesweeper-rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jovinlidan/minesweeper-rs 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bb5d11affd436bbcb80332244a010a1e821af024671e14012245b9ee0c752ce
[INFO] running `Command { std: "docker" "start" "-a" "0bb5d11affd436bbcb80332244a010a1e821af024671e14012245b9ee0c752ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bb5d11affd436bbcb80332244a010a1e821af024671e14012245b9ee0c752ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb5d11affd436bbcb80332244a010a1e821af024671e14012245b9ee0c752ce", kill_on_drop: false }`
[INFO] [stdout] 0bb5d11affd436bbcb80332244a010a1e821af024671e14012245b9ee0c752ce
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7018086d07066501392ffadef27488fae14a260731e5802a1189a8b9a7eb867
[INFO] running `Command { std: "docker" "start" "-a" "a7018086d07066501392ffadef27488fae14a260731e5802a1189a8b9a7eb867", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.87
[INFO] [stderr]    Compiling bumpalo v3.13.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.87
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[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]    Compiling wasm-bindgen-backend v0.2.87
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.87
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.87
[INFO] [stderr]     Checking minesweeper-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/minesweeper.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(u8),
[INFO] [stdout]    |     ------ ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/minesweeper.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(u8),
[INFO] [stdout]    |     ------ ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.80s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.87
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a7018086d07066501392ffadef27488fae14a260731e5802a1189a8b9a7eb867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7018086d07066501392ffadef27488fae14a260731e5802a1189a8b9a7eb867", kill_on_drop: false }`
[INFO] [stdout] a7018086d07066501392ffadef27488fae14a260731e5802a1189a8b9a7eb867
[INFO] checking jovinlidan/minesweeper-rs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjovinlidan%2Fminesweeper-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jovinlidan/minesweeper-rs on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jovinlidan/minesweeper-rs
[INFO] finished tweaking git repo https://github.com/jovinlidan/minesweeper-rs
[INFO] tweaked toml for git repo https://github.com/jovinlidan/minesweeper-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jovinlidan/minesweeper-rs 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 919ff5951ee987d4c094b5d1a6c76b4336e8d145fe7564db43c8b61470850f6d
[INFO] running `Command { std: "docker" "start" "-a" "919ff5951ee987d4c094b5d1a6c76b4336e8d145fe7564db43c8b61470850f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "919ff5951ee987d4c094b5d1a6c76b4336e8d145fe7564db43c8b61470850f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "919ff5951ee987d4c094b5d1a6c76b4336e8d145fe7564db43c8b61470850f6d", kill_on_drop: false }`
[INFO] [stdout] 919ff5951ee987d4c094b5d1a6c76b4336e8d145fe7564db43c8b61470850f6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cd9f36b25bce643f79096c5db04569a9dc039be8a3e18ed1680ecd017a30cfb
[INFO] running `Command { std: "docker" "start" "-a" "0cd9f36b25bce643f79096c5db04569a9dc039be8a3e18ed1680ecd017a30cfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.87
[INFO] [stderr]    Compiling bumpalo v3.13.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.87
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[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]    Compiling wasm-bindgen-backend v0.2.87
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.87
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.87
[INFO] [stderr]     Checking minesweeper-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/minesweeper.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(u8),
[INFO] [stdout]    |     ------ ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/minesweeper.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(u8),
[INFO] [stdout]    |     ------ ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoMine(()),
[INFO] [stdout]    |            ~~
[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` profile [unoptimized + debuginfo] target(s) in 8.98s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.87
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "0cd9f36b25bce643f79096c5db04569a9dc039be8a3e18ed1680ecd017a30cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd9f36b25bce643f79096c5db04569a9dc039be8a3e18ed1680ecd017a30cfb", kill_on_drop: false }`
[INFO] [stdout] 0cd9f36b25bce643f79096c5db04569a9dc039be8a3e18ed1680ecd017a30cfb