[INFO] cloning repository https://github.com/dgendill/n-queens-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dgendill/n-queens-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgendill%2Fn-queens-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgendill%2Fn-queens-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] dbccdfa94a970d0f38f43e0768cc904cb4c6968c [INFO] testing dgendill/n-queens-rust against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgendill%2Fn-queens-rust" "/workspace/builds/worker-118/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-118/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dgendill/n-queens-rust on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/dgendill/n-queens-rust [INFO] finished tweaking git repo https://github.com/dgendill/n-queens-rust [INFO] tweaked toml for git repo https://github.com/dgendill/n-queens-rust written to /workspace/builds/worker-118/source/Cargo.toml [INFO] crate git repo https://github.com/dgendill/n-queens-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1ab6177ad37f46e313997231a78adecb5c01aadd5ca4dc94cd34892dd99ad107 [INFO] running `Command { std: "docker" "start" "-a" "1ab6177ad37f46e313997231a78adecb5c01aadd5ca4dc94cd34892dd99ad107", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1ab6177ad37f46e313997231a78adecb5c01aadd5ca4dc94cd34892dd99ad107", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1ab6177ad37f46e313997231a78adecb5c01aadd5ca4dc94cd34892dd99ad107", kill_on_drop: false }` [INFO] [stdout] 1ab6177ad37f46e313997231a78adecb5c01aadd5ca4dc94cd34892dd99ad107 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 502e3766216ff9756c79b554b7f5f8d2bc58c07c53240a10f92d3aadb7dacbb5 [INFO] running `Command { std: "docker" "start" "-a" "502e3766216ff9756c79b554b7f5f8d2bc58c07c53240a10f92d3aadb7dacbb5", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling guessing_game2 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:233:9 [INFO] [stdout] | [INFO] [stdout] 233 | let mut board = Board::new(150); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:312:9 [INFO] [stdout] | [INFO] [stdout] 312 | let mut board = Board::new(n); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `from_index` [INFO] [stdout] --> src/main.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | fn from_index(index: usize, n: usize) -> Point { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `t` [INFO] [stdout] --> src/main.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | fn t(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `b` [INFO] [stdout] --> src/main.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn b(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `r` [INFO] [stdout] --> src/main.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn r(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `l` [INFO] [stdout] --> src/main.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | fn l(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `has_queen_at` [INFO] [stdout] --> src/main.rs:151:8 [INFO] [stdout] | [INFO] [stdout] 151 | fn has_queen_at(&self, p: &Point) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `row_has_queen` [INFO] [stdout] --> src/main.rs:176:8 [INFO] [stdout] | [INFO] [stdout] 176 | fn row_has_queen(&self, row: usize) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `diag_has_queen` [INFO] [stdout] --> src/main.rs:184:12 [INFO] [stdout] | [INFO] [stdout] 184 | pub fn diag_has_queen(&self, intersection: &Point) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.24s [INFO] running `Command { std: "docker" "inspect" "502e3766216ff9756c79b554b7f5f8d2bc58c07c53240a10f92d3aadb7dacbb5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "502e3766216ff9756c79b554b7f5f8d2bc58c07c53240a10f92d3aadb7dacbb5", kill_on_drop: false }` [INFO] [stdout] 502e3766216ff9756c79b554b7f5f8d2bc58c07c53240a10f92d3aadb7dacbb5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0c1c30971a0ad7c888cc011f7a24582e7f726bf55bd6d8c8284c30d9d8782ff0 [INFO] running `Command { std: "docker" "start" "-a" "0c1c30971a0ad7c888cc011f7a24582e7f726bf55bd6d8c8284c30d9d8782ff0", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:233:9 [INFO] [stdout] | [INFO] [stdout] 233 | let mut board = Board::new(150); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:312:9 [INFO] [stdout] | [INFO] [stdout] 312 | let mut board = Board::new(n); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `from_index` [INFO] [stdout] --> src/main.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | fn from_index(index: usize, n: usize) -> Point { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling guessing_game2 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: associated function is never used: `t` [INFO] [stdout] --> src/main.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | fn t(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `b` [INFO] [stdout] --> src/main.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn b(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `r` [INFO] [stdout] --> src/main.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn r(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `l` [INFO] [stdout] --> src/main.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | fn l(&self) -> Option { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `has_queen_at` [INFO] [stdout] --> src/main.rs:151:8 [INFO] [stdout] | [INFO] [stdout] 151 | fn has_queen_at(&self, p: &Point) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `row_has_queen` [INFO] [stdout] --> src/main.rs:176:8 [INFO] [stdout] | [INFO] [stdout] 176 | fn row_has_queen(&self, row: usize) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `diag_has_queen` [INFO] [stdout] --> src/main.rs:184:12 [INFO] [stdout] | [INFO] [stdout] 184 | pub fn diag_has_queen(&self, intersection: &Point) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `board` [INFO] [stdout] --> src/main.rs:483:13 [INFO] [stdout] | [INFO] [stdout] 483 | let board = solve_n_queens_f(board, None); //Some((1,1))); //mandatory_coords: Option<(usize, usize)>) [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_board` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:233:9 [INFO] [stdout] | [INFO] [stdout] 233 | let mut board = Board::new(150); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:312:9 [INFO] [stdout] | [INFO] [stdout] 312 | let mut board = Board::new(n); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:413:13 [INFO] [stdout] | [INFO] [stdout] 413 | let mut board = Board::new(10); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 5.52s [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0c1c30971a0ad7c888cc011f7a24582e7f726bf55bd6d8c8284c30d9d8782ff0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0c1c30971a0ad7c888cc011f7a24582e7f726bf55bd6d8c8284c30d9d8782ff0", kill_on_drop: false }` [INFO] [stdout] 0c1c30971a0ad7c888cc011f7a24582e7f726bf55bd6d8c8284c30d9d8782ff0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7b3584aeed21ae30652eb5a688f8fb8ba5aa311a59404d56d7f08ed51bf35aa4 [INFO] running `Command { std: "docker" "start" "-a" "7b3584aeed21ae30652eb5a688f8fb8ba5aa311a59404d56d7f08ed51bf35aa4", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stdout] [INFO] [stderr] --> src/main.rs:233:9 [INFO] [stdout] running 6 tests [INFO] [stderr] | [INFO] [stdout] test tests::diag_has_queen_test ... ok [INFO] [stderr] 233 | let mut board = Board::new(150); [INFO] [stdout] test tests::test_points ... ok [INFO] [stderr] | ----^^^^^ [INFO] [stdout] test tests::test_positions ... ok [INFO] [stderr] | | [INFO] [stdout] test tests::test_has_queen ... ok [INFO] [stderr] | help: remove this `mut` [INFO] [stdout] test tests::test_row_and_col_checks ... ok [INFO] [stderr] | [INFO] [stdout] test tests::perf ... ok [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stderr] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stdout] [INFO] [stderr] --> src/main.rs:312:9 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] running 0 tests [INFO] [stderr] 312 | let mut board = Board::new(n); [INFO] [stdout] [INFO] [stderr] | ----^^^^^ [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | | [INFO] [stdout] [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `from_index` [INFO] [stderr] --> src/main.rs:32:8 [INFO] [stderr] | [INFO] [stderr] 32 | fn from_index(index: usize, n: usize) -> Point { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `t` [INFO] [stderr] --> src/main.rs:38:8 [INFO] [stderr] | [INFO] [stderr] 38 | fn t(&self) -> Option { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `b` [INFO] [stderr] --> src/main.rs:47:8 [INFO] [stderr] | [INFO] [stderr] 47 | fn b(&self) -> Option { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `r` [INFO] [stderr] --> src/main.rs:57:8 [INFO] [stderr] | [INFO] [stderr] 57 | fn r(&self) -> Option { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `l` [INFO] [stderr] --> src/main.rs:68:8 [INFO] [stderr] | [INFO] [stderr] 68 | fn l(&self) -> Option { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `has_queen_at` [INFO] [stderr] --> src/main.rs:151:8 [INFO] [stderr] | [INFO] [stderr] 151 | fn has_queen_at(&self, p: &Point) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `row_has_queen` [INFO] [stderr] --> src/main.rs:176:8 [INFO] [stderr] | [INFO] [stderr] 176 | fn row_has_queen(&self, row: usize) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `diag_has_queen` [INFO] [stderr] --> src/main.rs:184:12 [INFO] [stderr] | [INFO] [stderr] 184 | pub fn diag_has_queen(&self, intersection: &Point) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `board` [INFO] [stderr] --> src/main.rs:483:13 [INFO] [stderr] | [INFO] [stderr] 483 | let board = solve_n_queens_f(board, None); //Some((1,1))); //mandatory_coords: Option<(usize, usize)>) [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_board` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:413:13 [INFO] [stderr] | [INFO] [stderr] 413 | let mut board = Board::new(10); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: `guessing_game2` (bin "guessing_game2") generated 10 warnings [INFO] [stderr] warning: `guessing_game2` (bin "guessing_game2" test) generated 4 warnings (2 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.19s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/guessing_game2-48a7ffed057c02c1) [INFO] [stderr] Running tests/test.rs (/opt/rustwide/target/debug/deps/test-06ba15caa131a022) [INFO] running `Command { std: "docker" "inspect" "7b3584aeed21ae30652eb5a688f8fb8ba5aa311a59404d56d7f08ed51bf35aa4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b3584aeed21ae30652eb5a688f8fb8ba5aa311a59404d56d7f08ed51bf35aa4", kill_on_drop: false }` [INFO] [stdout] 7b3584aeed21ae30652eb5a688f8fb8ba5aa311a59404d56d7f08ed51bf35aa4