[INFO] cloning repository https://github.com/conundrumer/crossword [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/conundrumer/crossword" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconundrumer%2Fcrossword", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconundrumer%2Fcrossword'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cec0ee1cc7277c14c4afeb48fc9488b7fa941ab3 [INFO] checking conundrumer/crossword/cec0ee1cc7277c14c4afeb48fc9488b7fa941ab3 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconundrumer%2Fcrossword" "/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/conundrumer/crossword on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/conundrumer/crossword [INFO] finished tweaking git repo https://github.com/conundrumer/crossword [INFO] tweaked toml for git repo https://github.com/conundrumer/crossword written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/conundrumer/crossword 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 19cbc57b2563e737170ba6e6b0a1705ce088b87b652a0ba01ca8574136e354cc [INFO] running `Command { std: "docker" "start" "-a" "19cbc57b2563e737170ba6e6b0a1705ce088b87b652a0ba01ca8574136e354cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "19cbc57b2563e737170ba6e6b0a1705ce088b87b652a0ba01ca8574136e354cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "19cbc57b2563e737170ba6e6b0a1705ce088b87b652a0ba01ca8574136e354cc", kill_on_drop: false }` [INFO] [stdout] 19cbc57b2563e737170ba6e6b0a1705ce088b87b652a0ba01ca8574136e354cc [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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] da084961d75f9854b588392a5d6dcc4eb4fb34e6497863990d91d1a0502a88c6 [INFO] running `Command { std: "docker" "start" "-a" "da084961d75f9854b588392a5d6dcc4eb4fb34e6497863990d91d1a0502a88c6", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking crossword v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/grid.rs:25:21 [INFO] [stdout] | [INFO] [stdout] 25 | vec![Empty; ((bb.width() as usize) * (bb.height() as usize))] [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 25 - vec![Empty; ((bb.width() as usize) * (bb.height() as usize))] [INFO] [stdout] 25 + vec![Empty; (bb.width() as usize) * (bb.height() as usize)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(conservative_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/grid.rs:25:21 [INFO] [stdout] | [INFO] [stdout] 25 | vec![Empty; ((bb.width() as usize) * (bb.height() as usize))] [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 25 - vec![Empty; ((bb.width() as usize) * (bb.height() as usize))] [INFO] [stdout] 25 + vec![Empty; (bb.width() as usize) * (bb.height() as usize)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(conservative_impl_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:41:38 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn iter<'b>(&'b self) -> Box + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 41 | pub fn iter<'b>(&'b self) -> Box + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:46:62 [INFO] [stdout] | [INFO] [stdout] 46 | pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 46 | pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:78:112 [INFO] [stdout] | [INFO] [stdout] 78 | ...didates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 78 | fn from_word_vec_partial<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:89:114 [INFO] [stdout] | [INFO] [stdout] 89 | ...word, candidates: Rc>, seed: u64) -> Box + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 89 | fn from_word_vec_recursive<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:100:104 [INFO] [stdout] | [INFO] [stdout] 100 | ...didates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 100 | fn from_word_vec<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:41:38 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn iter<'b>(&'b self) -> Box + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 41 | pub fn iter<'b>(&'b self) -> Box + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:46:62 [INFO] [stdout] | [INFO] [stdout] 46 | pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 46 | pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:78:112 [INFO] [stdout] | [INFO] [stdout] 78 | ...didates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 78 | fn from_word_vec_partial<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:89:114 [INFO] [stdout] | [INFO] [stdout] 89 | ...word, candidates: Rc>, seed: u64) -> Box + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 89 | fn from_word_vec_recursive<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:100:104 [INFO] [stdout] | [INFO] [stdout] 100 | ...didates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 100 | fn from_word_vec<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/generate.rs:187:73 [INFO] [stdout] | [INFO] [stdout] 187 | pub fn test_generator(words: Vec<&str>, num_areas: usize, test_fn: &Fn(Generator) -> ()) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 187 | pub fn test_generator(words: Vec<&str>, num_areas: usize, test_fn: &dyn Fn(Generator) -> ()) { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:33:31 [INFO] [stdout] | [INFO] [stdout] 33 | if area > prev_area { [INFO] [stdout] | ^^^^^^^^^ expected `&i16`, found `i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 33 | if *area > prev_area { [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:34:49 [INFO] [stdout] | [INFO] [stdout] 34 | return (overlaps as i8, area) [INFO] [stdout] | ^^^^ expected `i16`, found `&i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 34 | return (overlaps as i8, *area) [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:57:27 [INFO] [stdout] | [INFO] [stdout] 57 | if area > last_area { [INFO] [stdout] | ---- ^^^^^^^^^ expected `i16`, found `&i16` [INFO] [stdout] | | [INFO] [stdout] | expected because this is `i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 57 | if area > *last_area { [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:60:27 [INFO] [stdout] | [INFO] [stdout] 60 | if area < last_area && !areas.contains(&area) { [INFO] [stdout] | ---- ^^^^^^^^^ expected `i16`, found `&i16` [INFO] [stdout] | | [INFO] [stdout] | expected because this is `i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 60 | if area < *last_area && !areas.contains(&area) { [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:33:31 [INFO] [stdout] | [INFO] [stdout] 33 | if area > prev_area { [INFO] [stdout] | ^^^^^^^^^ expected `&i16`, found `i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 33 | if *area > prev_area { [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:34:49 [INFO] [stdout] | [INFO] [stdout] 34 | return (overlaps as i8, area) [INFO] [stdout] | ^^^^ expected `i16`, found `&i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 34 | return (overlaps as i8, *area) [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:57:27 [INFO] [stdout] | [INFO] [stdout] 57 | if area > last_area { [INFO] [stdout] | ---- ^^^^^^^^^ expected `i16`, found `&i16` [INFO] [stdout] | | [INFO] [stdout] | expected because this is `i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 57 | if area > *last_area { [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/filter.rs:60:27 [INFO] [stdout] | [INFO] [stdout] 60 | if area < last_area && !areas.contains(&area) { [INFO] [stdout] | ---- ^^^^^^^^^ expected `i16`, found `&i16` [INFO] [stdout] | | [INFO] [stdout] | expected because this is `i16` [INFO] [stdout] | [INFO] [stdout] help: consider dereferencing the borrow [INFO] [stdout] | [INFO] [stdout] 60 | if area < *last_area && !areas.contains(&area) { [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/filter.rs:115:17 [INFO] [stdout] | [INFO] [stdout] 115 | let mut seen = &mut self.seen.borrow_mut(); [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] error: aborting due to 4 previous errors; 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/filter.rs:115:17 [INFO] [stdout] | [INFO] [stdout] 115 | let mut seen = &mut self.seen.borrow_mut(); [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] [stderr] error: could not compile `crossword` (bin "crossword") due to 5 previous errors; 8 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 4 previous errors; 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `crossword` (bin "crossword" test) due to 5 previous errors; 9 warnings emitted [INFO] running `Command { std: "docker" "inspect" "da084961d75f9854b588392a5d6dcc4eb4fb34e6497863990d91d1a0502a88c6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da084961d75f9854b588392a5d6dcc4eb4fb34e6497863990d91d1a0502a88c6", kill_on_drop: false }` [INFO] [stdout] da084961d75f9854b588392a5d6dcc4eb4fb34e6497863990d91d1a0502a88c6