[INFO] cloning repository https://github.com/Piping/sudoku-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Piping/sudoku-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ee775c2a0d9726b49b5cc7ec54c19133e8652c6b [INFO] checking Piping/sudoku-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs" "/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/Piping/sudoku-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/Piping/sudoku-rs [INFO] finished tweaking git repo https://github.com/Piping/sudoku-rs [INFO] tweaked toml for git repo https://github.com/Piping/sudoku-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Piping/sudoku-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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded serde_cbor v0.11.1 [INFO] [stderr] Downloaded half v1.7.1 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.73 [INFO] [stderr] Downloaded plotters-svg v0.3.0 [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.73 [INFO] [stderr] Downloaded memoffset v0.6.3 [INFO] [stderr] Downloaded cast v0.2.5 [INFO] [stderr] Downloaded plotters-backend v0.3.0 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.73 [INFO] [stderr] Downloaded criterion-plot v0.4.3 [INFO] [stderr] Downloaded itertools v0.10.0 [INFO] [stderr] Downloaded wasm-bindgen v0.2.73 [INFO] [stderr] Downloaded bstr v0.2.15 [INFO] [stderr] Downloaded criterion v0.3.4 [INFO] [stderr] Downloaded js-sys v0.3.50 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.73 [INFO] [stderr] Downloaded crossbeam-epoch v0.9.3 [INFO] [stderr] Downloaded plotters v0.3.0 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e3cb5b859e6d09d76da45f10a7b5f9cba384494cb974df4295665a7e2311bb15 [INFO] running `Command { std: "docker" "start" "-a" "e3cb5b859e6d09d76da45f10a7b5f9cba384494cb974df4295665a7e2311bb15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e3cb5b859e6d09d76da45f10a7b5f9cba384494cb974df4295665a7e2311bb15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e3cb5b859e6d09d76da45f10a7b5f9cba384494cb974df4295665a7e2311bb15", kill_on_drop: false }` [INFO] [stdout] e3cb5b859e6d09d76da45f10a7b5f9cba384494cb974df4295665a7e2311bb15 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b279347959447f2ab60eb8df47150c776cd4301a6a440fbb2d8158c20170f8de [INFO] running `Command { std: "docker" "start" "-a" "b279347959447f2ab60eb8df47150c776cd4301a6a440fbb2d8158c20170f8de", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.3 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling cast v0.2.5 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Compiling syn v1.0.70 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking crossbeam-epoch v0.9.3 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking plotters-backend v0.3.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking plotters-svg v0.3.0 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking regex-syntax v0.6.23 [INFO] [stderr] Checking half v1.7.1 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking itertools v0.10.0 [INFO] [stderr] Checking plotters v0.3.0 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking sudoku-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [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 | pub 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] [stderr] Checking regex v1.4.6 [INFO] [stdout] warning: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking bstr v0.2.15 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.3.4 [INFO] [stdout] warning: found module declaration for lib.rs [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | pub 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: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.22s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "b279347959447f2ab60eb8df47150c776cd4301a6a440fbb2d8158c20170f8de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b279347959447f2ab60eb8df47150c776cd4301a6a440fbb2d8158c20170f8de", kill_on_drop: false }` [INFO] [stdout] b279347959447f2ab60eb8df47150c776cd4301a6a440fbb2d8158c20170f8de [INFO] checking Piping/sudoku-rs against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs" "/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/Piping/sudoku-rs on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Piping/sudoku-rs [INFO] finished tweaking git repo https://github.com/Piping/sudoku-rs [INFO] tweaked toml for git repo https://github.com/Piping/sudoku-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Piping/sudoku-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 49e95b6acd415ac080fb290084d9c4ce032ca2609a217b210c9ecb8fe0fe689d [INFO] running `Command { std: "docker" "start" "-a" "49e95b6acd415ac080fb290084d9c4ce032ca2609a217b210c9ecb8fe0fe689d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "49e95b6acd415ac080fb290084d9c4ce032ca2609a217b210c9ecb8fe0fe689d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "49e95b6acd415ac080fb290084d9c4ce032ca2609a217b210c9ecb8fe0fe689d", kill_on_drop: false }` [INFO] [stdout] 49e95b6acd415ac080fb290084d9c4ce032ca2609a217b210c9ecb8fe0fe689d [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 632f942356fc6f34c8d5589d294bcb4f28177817de9e0d742b30bb9168889373 [INFO] running `Command { std: "docker" "start" "-a" "632f942356fc6f34c8d5589d294bcb4f28177817de9e0d742b30bb9168889373", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.3 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling cast v0.2.5 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling syn v1.0.70 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Checking plotters-backend v0.3.0 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Checking crossbeam-epoch v0.9.3 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking plotters-svg v0.3.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking half v1.7.1 [INFO] [stderr] Checking regex-syntax v0.6.23 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking itertools v0.10.0 [INFO] [stderr] Checking plotters v0.3.0 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking regex v1.4.6 [INFO] [stderr] Checking sudoku-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [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 | pub 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: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking bstr v0.2.15 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.3.4 [INFO] [stdout] warning: found module declaration for lib.rs [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | pub 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: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `options_for_with_hashset` is never used [INFO] [stdout] --> src/lib.rs:147:4 [INFO] [stdout] | [INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.17s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "632f942356fc6f34c8d5589d294bcb4f28177817de9e0d742b30bb9168889373", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "632f942356fc6f34c8d5589d294bcb4f28177817de9e0d742b30bb9168889373", kill_on_drop: false }` [INFO] [stdout] 632f942356fc6f34c8d5589d294bcb4f28177817de9e0d742b30bb9168889373