[INFO] cloning repository https://github.com/ligebit/SUDOKU
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ligebit/SUDOKU" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fligebit%2FSUDOKU", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fligebit%2FSUDOKU'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3d74e23a590ba20557c3fff9cad2ad971a3fc4f
[INFO] checking ligebit/SUDOKU against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fligebit%2FSUDOKU" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ligebit/SUDOKU
[INFO] finished tweaking git repo https://github.com/ligebit/SUDOKU
[INFO] tweaked toml for git repo https://github.com/ligebit/SUDOKU written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ligebit/SUDOKU on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ligebit/SUDOKU 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dyn-clone v1.0.10
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.91
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.91
[INFO] [stderr]   Downloaded proc-macro-crate v1.3.0
[INFO] [stderr]   Downloaded toml_datetime v0.5.1
[INFO] [stderr]   Downloaded cxx-build v1.0.91
[INFO] [stderr]   Downloaded nom8 v0.2.0
[INFO] [stderr]   Downloaded toml_edit v0.18.1
[INFO] [stderr]   Downloaded cxx v1.0.91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05907be816b1d1e3741b5da9643b30d93a8a4c68b4692ff99a67848f62044bef
[INFO] running `Command { std: "docker" "start" "-a" "05907be816b1d1e3741b5da9643b30d93a8a4c68b4692ff99a67848f62044bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05907be816b1d1e3741b5da9643b30d93a8a4c68b4692ff99a67848f62044bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05907be816b1d1e3741b5da9643b30d93a8a4c68b4692ff99a67848f62044bef", kill_on_drop: false }`
[INFO] [stdout] 05907be816b1d1e3741b5da9643b30d93a8a4c68b4692ff99a67848f62044bef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31641d18d22ac4cf1463bac52b67246a68609e54d4b6093c5685a4e4bef508b9
[INFO] running `Command { std: "docker" "start" "-a" "31641d18d22ac4cf1463bac52b67246a68609e54d4b6093c5685a4e4bef508b9", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling toml_datetime v0.5.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling serde_json v1.0.93
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling rustversion v1.0.11
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]    Compiling parity-secp256k1 v0.7.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]    Compiling reed-solomon-erasure v4.0.2
[INFO] [stderr]    Compiling schemars v0.8.11
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]    Compiling nom8 v0.2.0
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking dyn-clone v1.0.10
[INFO] [stderr]     Checking keccak v0.1.3
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling easy-ext v0.2.9
[INFO] [stderr]     Checking bytesize v1.1.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking near-sys v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking strum v0.19.5
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking fixed-hash v0.7.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking c2-chacha v0.3.3
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]     Checking sha3 v0.10.6
[INFO] [stderr]     Checking ripemd v0.1.3
[INFO] [stderr]    Compiling toml_edit v0.18.1
[INFO] [stderr]    Compiling proc-macro-crate v1.3.0
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.9.3
[INFO] [stderr]    Compiling borsh-derive-internal v0.9.3
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_derive_internals v0.26.0
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.3.1
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling smart-default v0.6.0
[INFO] [stderr]    Compiling near-sdk-macros v4.1.1
[INFO] [stderr]    Compiling strum_macros v0.19.4
[INFO] [stderr]    Compiling zeroize_derive v1.3.3
[INFO] [stderr]    Compiling schemars_derive v0.8.11
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking curve25519-dalek v3.2.1
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking parity-scale-codec v2.3.1
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling near-rpc-error-core v0.14.0
[INFO] [stderr]     Checking impl-codec v0.5.1
[INFO] [stderr]     Checking primitive-types v0.10.1
[INFO] [stderr]    Compiling near-rpc-error-macro v0.14.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling borsh-derive v0.9.3
[INFO] [stderr]     Checking borsh v0.9.3
[INFO] [stderr]     Checking near-account-id v0.14.0
[INFO] [stderr]     Checking zeropool-bn v0.5.11
[INFO] [stderr]     Checking near-abi v0.3.0
[INFO] [stderr]     Checking near-primitives-core v0.14.0
[INFO] [stderr]     Checking near-crypto v0.14.0
[INFO] [stderr]     Checking near-vm-errors v0.14.0
[INFO] [stderr]     Checking near-primitives v0.14.0
[INFO] [stderr]     Checking near-vm-logic v0.14.0
[INFO] [stderr]     Checking near-sdk v4.1.1
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:73:7
[INFO] [stdout]    |
[INFO] [stdout] 73 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:78:7
[INFO] [stdout]    |
[INFO] [stdout] 78 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:96:7
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> src/board/sudoku.rs:111:7
[INFO] [stdout]     |
[INFO] [stdout] 111 | #[cfg(feature = "serde")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `*` and `self`
[INFO] [stdout]  --> src/board/sudoku.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use near_sdk::serde::{self, *};
[INFO] [stdout]   |                       ^^^^  ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unchecked_indexing`
[INFO] [stdout]    --> src/solver.rs:902:17
[INFO] [stdout]     |
[INFO] [stdout] 902 |         if cfg!(feature = "unchecked_indexing") {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `unchecked_indexing` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unchecked_indexing`
[INFO] [stdout]    --> src/solver.rs:913:17
[INFO] [stdout]     |
[INFO] [stdout] 913 |         if cfg!(feature = "unchecked_indexing") {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `unchecked_indexing` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:73:7
[INFO] [stdout]    |
[INFO] [stdout] 73 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:78:7
[INFO] [stdout]    |
[INFO] [stdout] 78 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/board/sudoku.rs:96:7
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg(feature = "serde")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> src/board/sudoku.rs:111:7
[INFO] [stdout]     |
[INFO] [stdout] 111 | #[cfg(feature = "serde")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `*` and `self`
[INFO] [stdout]  --> src/board/sudoku.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use near_sdk::serde::{self, *};
[INFO] [stdout]   |                       ^^^^  ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unchecked_indexing`
[INFO] [stdout]    --> src/solver.rs:902:17
[INFO] [stdout]     |
[INFO] [stdout] 902 |         if cfg!(feature = "unchecked_indexing") {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `unchecked_indexing` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unchecked_indexing`
[INFO] [stdout]    --> src/solver.rs:913:17
[INFO] [stdout]     |
[INFO] [stdout] 913 |         if cfg!(feature = "unchecked_indexing") {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `unchecked_indexing` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/board/canonicalization.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub(crate) fn random(mut rng: &mut StdRng) -> Self {
[INFO] [stdout]    |                          ----^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/board/canonicalization.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub(crate) fn random(mut rng: &mut StdRng) -> Self {
[INFO] [stdout]    |                          ----^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GridState` is never constructed
[INFO] [stdout]  --> src/board/grid_state.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct GridState([CellState; 81]);
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `clues` is never read
[INFO] [stdout]   --> src/strategy/solver.rs:52:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct StrategySolver {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub(crate) clues: Option<Sudoku>,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StrategySolver` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/board/sudoku.rs:751:17
[INFO] [stdout]     |
[INFO] [stdout] 751 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 751 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `clues` is never read
[INFO] [stdout]   --> src/strategy/solver.rs:52:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct StrategySolver {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub(crate) clues: Option<Sudoku>,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StrategySolver` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/board/sudoku.rs:751:17
[INFO] [stdout]     |
[INFO] [stdout] 751 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 751 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.11s
[INFO] running `Command { std: "docker" "inspect" "31641d18d22ac4cf1463bac52b67246a68609e54d4b6093c5685a4e4bef508b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31641d18d22ac4cf1463bac52b67246a68609e54d4b6093c5685a4e4bef508b9", kill_on_drop: false }`
[INFO] [stdout] 31641d18d22ac4cf1463bac52b67246a68609e54d4b6093c5685a4e4bef508b9
