[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 against master#c756124775121dea0e640652c5ee3c89e3dd0eb4 for pr-154971-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconundrumer%2Fcrossword" "/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/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-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/conundrumer/crossword on toolchain c756124775121dea0e640652c5ee3c89e3dd0eb4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efe26229bb012d85e4ed4e260ddb9bfadc805392ed2c6233afa1f1cb5fd53240
[INFO] running `Command { std: "docker" "start" "-a" "efe26229bb012d85e4ed4e260ddb9bfadc805392ed2c6233afa1f1cb5fd53240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efe26229bb012d85e4ed4e260ddb9bfadc805392ed2c6233afa1f1cb5fd53240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efe26229bb012d85e4ed4e260ddb9bfadc805392ed2c6233afa1f1cb5fd53240", kill_on_drop: false }`
[INFO] [stdout] efe26229bb012d85e4ed4e260ddb9bfadc805392ed2c6233afa1f1cb5fd53240
[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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19d40a6a9c71a4c89d283b704f8414ca0f14b76fd1b0232a6eae143c9c360b0b
[INFO] running `Command { std: "docker" "start" "-a" "19d40a6a9c71a4c89d283b704f8414ca0f14b76fd1b0232a6eae143c9c360b0b", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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<Iterator<Item=Crossword> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter<'b>(&'b self) -> Box<dyn Iterator<Item=Crossword> + '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<Iterator<Item=Crossword> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box<dyn Iterator<Item=Crossword> + '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 | ...dates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn from_word_vec_partial<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 | ...rd, candidates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=Crossword> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn from_word_vec_recursive<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=Crossword> + '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 | ...ates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn from_word_vec<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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<Iterator<Item=Crossword> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter<'b>(&'b self) -> Box<dyn Iterator<Item=Crossword> + '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<Iterator<Item=Crossword> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box<dyn Iterator<Item=Crossword> + '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 | ...dates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn from_word_vec_partial<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 | ...rd, candidates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=Crossword> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn from_word_vec_recursive<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=Crossword> + '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 | ...ates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn from_word_vec<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=(Crossword, Rc<Vec<usize>>)> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible 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)]` (part of `#[warn(unused)]`) on by default
[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") due to 4 previous errors; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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)]` (part of `#[warn(unused)]`) on by default
[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 4 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "19d40a6a9c71a4c89d283b704f8414ca0f14b76fd1b0232a6eae143c9c360b0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19d40a6a9c71a4c89d283b704f8414ca0f14b76fd1b0232a6eae143c9c360b0b", kill_on_drop: false }`
[INFO] [stdout] 19d40a6a9c71a4c89d283b704f8414ca0f14b76fd1b0232a6eae143c9c360b0b
