[INFO] cloning repository https://github.com/Luminoth/mazes-for-programmers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Luminoth/mazes-for-programmers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuminoth%2Fmazes-for-programmers", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa8461c720efc03529fb0acc2732ca999195a509
[INFO] testing Luminoth/mazes-for-programmers against 1.83.0 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuminoth%2Fmazes-for-programmers" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Luminoth/mazes-for-programmers on toolchain 1.83.0
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[INFO] finished tweaking git repo https://github.com/Luminoth/mazes-for-programmers
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[INFO] crate git repo https://github.com/Luminoth/mazes-for-programmers 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" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] error[E0609]: no field `north` on type `&cell::Cell`
[INFO] [stdout]   --> core/src/generators/binarytree.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |         if let Some(north) = cell.north {
[INFO] [stdout]    |                                   ^^^^^ unknown field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `east` on type `&cell::Cell`
[INFO] [stdout]   --> core/src/generators/binarytree.rs:26:34
[INFO] [stdout]    |
[INFO] [stdout] 26 |         if let Some(east) = cell.east {
[INFO] [stdout]    |                                  ^^^^ unknown field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `east` on type `&cell::Cell`
[INFO] [stdout]   --> core/src/generators/sidewinder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let at_eastern_boundary = cell.east.is_none();
[INFO] [stdout]    |                                        ^^^^ unknown field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `north` on type `&cell::Cell`
[INFO] [stdout]   --> core/src/generators/sidewinder.rs:27:41
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let at_northern_boundary = cell.north.is_none();
[INFO] [stdout]    |                                         ^^^^^ unknown field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `north` on type `&cell::Cell`
[INFO] [stdout]   --> core/src/generators/sidewinder.rs:38:41
[INFO] [stdout]    |
[INFO] [stdout] 38 |             if let Some(north) = member.north {
[INFO] [stdout]    |                                         ^^^^^ unknown field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `east` on type `&cell::Cell`
[INFO] [stdout]   --> core/src/generators/sidewinder.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |             Some((cell_handle, cell.east.unwrap()))
[INFO] [stdout]    |                                     ^^^^ unknown field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for mutable reference `&mut OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:423:26
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     self.get(row - 1, col).map(|cell| cell.handle())
[INFO] [stdout]     |                          ^^^ method not found in `&mut OrthogonalGrid`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `get`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `SliceIndex`
[INFO] [stdout] help: one of the expressions' fields has a method of the same name
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     self.grid.get(row - 1, col).map(|cell| cell.handle())
[INFO] [stdout]     |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for mutable reference `&mut OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:428:34
[INFO] [stdout]     |
[INFO] [stdout] 428 |                 let south = self.get(row + 1, col).map(|cell| cell.handle());
[INFO] [stdout]     |                                  ^^^ method not found in `&mut OrthogonalGrid`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `get`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `SliceIndex`
[INFO] [stdout] help: one of the expressions' fields has a method of the same name
[INFO] [stdout]     |
[INFO] [stdout] 428 |                 let south = self.grid.get(row + 1, col).map(|cell| cell.handle());
[INFO] [stdout]     |                                  +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for mutable reference `&mut OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:431:26
[INFO] [stdout]     |
[INFO] [stdout] 431 |                     self.get(row, col - 1).map(|cell| cell.handle())
[INFO] [stdout]     |                          ^^^ method not found in `&mut OrthogonalGrid`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `get`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `SliceIndex`
[INFO] [stdout] help: one of the expressions' fields has a method of the same name
[INFO] [stdout]     |
[INFO] [stdout] 431 |                     self.grid.get(row, col - 1).map(|cell| cell.handle())
[INFO] [stdout]     |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for mutable reference `&mut OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:436:33
[INFO] [stdout]     |
[INFO] [stdout] 436 |                 let east = self.get(row, col + 1).map(|cell| cell.handle());
[INFO] [stdout]     |                                 ^^^ method not found in `&mut OrthogonalGrid`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `get`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `SliceIndex`
[INFO] [stdout] help: one of the expressions' fields has a method of the same name
[INFO] [stdout]     |
[INFO] [stdout] 436 |                 let east = self.grid.get(row, col + 1).map(|cell| cell.handle());
[INFO] [stdout]     |                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get_mut` found for mutable reference `&mut OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:438:33
[INFO] [stdout]     |
[INFO] [stdout] 438 |                 let cell = self.get_mut(row, col);
[INFO] [stdout]     |                                 ^^^^^^^ method not found in `&mut OrthogonalGrid`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `get_mut`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `SliceIndex`
[INFO] [stdout] help: one of the expressions' fields has a method of the same name
[INFO] [stdout]     |
[INFO] [stdout] 438 |                 let cell = self.grid.get_mut(row, col);
[INFO] [stdout]     |                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `empty_cell_contents` found for reference `&OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:457:36
[INFO] [stdout]     |
[INFO] [stdout] 457 |         let (digits, empty) = self.empty_cell_contents();
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^ method not found in `&OrthogonalGrid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `rows_iter` found for reference `&OrthogonalGrid` in the current scope
[INFO] [stdout]    --> core/src/grid.rs:463:25
[INFO] [stdout]     |
[INFO] [stdout] 463 |         for row in self.rows_iter() {
[INFO] [stdout]     |                         ^^^^^^^^^ method not found in `&OrthogonalGrid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&OrthogonalGrid` is not an iterator
[INFO] [stdout]    --> core/src/grid.rs:585:21
[INFO] [stdout]     |
[INFO] [stdout] 585 |         for cell in self {
[INFO] [stdout]     |                     ^^^^ `&OrthogonalGrid` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Iterator` is not implemented for `&OrthogonalGrid`, which is required by `&OrthogonalGrid: IntoIterator`
[INFO] [stdout]     = help: there are multiple different versions of crate `core` in the dependency graph
[INFO] [stdout]     = help: you can use `cargo tree` to explore your dependency tree
[INFO] [stdout]     = note: required for `&OrthogonalGrid` to implement `IntoIterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&OrthogonalGrid` is not an iterator
[INFO] [stdout]    --> core/src/grid.rs:605:21
[INFO] [stdout]     |
[INFO] [stdout] 605 |         for cell in self {
[INFO] [stdout]     |                     ^^^^ `&OrthogonalGrid` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Iterator` is not implemented for `&OrthogonalGrid`, which is required by `&OrthogonalGrid: IntoIterator`
[INFO] [stdout]     = help: there are multiple different versions of crate `core` in the dependency graph
[INFO] [stdout]     = help: you can use `cargo tree` to explore your dependency tree
[INFO] [stdout]     = note: required for `&OrthogonalGrid` to implement `IntoIterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&PolarGrid` is not an iterator
[INFO] [stdout]    --> core/src/grid.rs:736:21
[INFO] [stdout]     |
[INFO] [stdout] 736 |         for cell in self {
[INFO] [stdout]     |                     ^^^^ `&PolarGrid` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Iterator` is not implemented for `&PolarGrid`, which is required by `&PolarGrid: IntoIterator`
[INFO] [stdout]     = help: there are multiple different versions of crate `core` in the dependency graph
[INFO] [stdout]     = help: you can use `cargo tree` to explore your dependency tree
[INFO] [stdout]     = note: required for `&PolarGrid` to implement `IntoIterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `self.outward` which is behind a shared reference
[INFO] [stdout]    --> core/src/cell.rs:359:24
[INFO] [stdout]     |
[INFO] [stdout] 359 |         for outward in self.outward {
[INFO] [stdout]     |                        ^^^^^^^^^^^^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        `self.outward` moved due to this implicit call to `.into_iter()`
[INFO] [stdout]     |                        move occurs because `self.outward` has type `Vec<cell::CellHandle>`, which does not implement the `Copy` trait
[INFO] [stdout]     |
[INFO] [stdout] note: `std::iter::IntoIterator::into_iter` takes ownership of the receiver `self`, which moves `self.outward`
[INFO] [stdout]    --> /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/iter/traits/collect.rs:346:18
[INFO] [stdout] help: consider iterating over a slice of the `Vec<cell::CellHandle>`'s content to avoid moving into the `for` loop
[INFO] [stdout]     |
[INFO] [stdout] 359 |         for outward in &self.outward {
[INFO] [stdout]     |                        +
[INFO] [stdout] help: consider cloning the value if the performance cost is acceptable
[INFO] [stdout]     |
[INFO] [stdout] 359 |         for outward in self.outward.clone() {
[INFO] [stdout]     |                                    ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `grid` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> core/src/grid.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let grid = OrthogonalGrid::new(rows, cols);
[INFO] [stdout]    |             ^^^^ not mutable
[INFO] [stdout] 26 |         grid.init_grid();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout] 27 |         grid.init_cells();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut grid = OrthogonalGrid::new(rows, cols);
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `grid` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> core/src/grid.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let grid = OrthogonalGrid::from_mask(mask);
[INFO] [stdout]    |             ^^^^ not mutable
[INFO] [stdout] 37 |         grid.init_grid();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout] 38 |         grid.init_cells();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut grid = OrthogonalGrid::from_mask(mask);
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `grid` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> core/src/grid.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let grid = PolarGrid::new(rows, cols);
[INFO] [stdout]    |             ^^^^ not mutable
[INFO] [stdout] 48 |         grid.init_grid();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout] 49 |         grid.init_cells();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut grid = PolarGrid::new(rows, cols);
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `grid` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> core/src/grid.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let grid = PolarGrid::from_mask(mask);
[INFO] [stdout]    |             ^^^^ not mutable
[INFO] [stdout] 59 |         grid.init_grid();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout] 60 |         grid.init_cells();
[INFO] [stdout]    |         ---- cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let mut grid = PolarGrid::from_mask(mask);
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> core/src/grid.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |         mut cell_size: usize,
[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[E0507]: cannot move out of `self.mask` as enum variant `Some` which is behind a mutable reference
[INFO] [stdout]    --> core/src/grid.rs:404:48
[INFO] [stdout]     |
[INFO] [stdout] 404 |                 let cell = if let Some(mask) = self.mask {
[INFO] [stdout]     |                                        ----    ^^^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        data moved here
[INFO] [stdout]     |                                        move occurs because `mask` has type `mask::Mask`, which does not implement the `Copy` trait
[INFO] [stdout]     |
[INFO] [stdout] help: consider borrowing here
[INFO] [stdout]     |
[INFO] [stdout] 404 |                 let cell = if let Some(mask) = &self.mask {
[INFO] [stdout]     |                                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `solver`
[INFO] [stdout]    --> core/src/grid.rs:660:28
[INFO] [stdout]     |
[INFO] [stdout] 660 |     fn render_ascii(&self, solver: Option<&impl Solver>) -> String {
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_solver`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ax`
[INFO] [stdout]    --> core/src/grid.rs:685:13
[INFO] [stdout]     |
[INFO] [stdout] 685 |         let ax = (image_center.0 + (inner_radius * theta_ccw.cos())) as usize;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_ax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ay`
[INFO] [stdout]    --> core/src/grid.rs:686:13
[INFO] [stdout]     |
[INFO] [stdout] 686 |         let ay = (image_center.1 + (inner_radius * theta_ccw.sin())) as usize;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_ay`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> core/src/grid.rs:689:13
[INFO] [stdout]     |
[INFO] [stdout] 689 |         let cx = (image_center.0 + (inner_radius * theta_cw.cos())) as usize;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cy`
[INFO] [stdout]    --> core/src/grid.rs:690:13
[INFO] [stdout]     |
[INFO] [stdout] 690 |         let cy = (image_center.1 + (inner_radius * theta_cw.sin())) as usize;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_cy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dx`
[INFO] [stdout]    --> core/src/grid.rs:691:13
[INFO] [stdout]     |
[INFO] [stdout] 691 |         let dx = (image_center.0 + (outer_radius * theta_cw.cos())) as usize;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_dx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dy`
[INFO] [stdout]    --> core/src/grid.rs:692:13
[INFO] [stdout]     |
[INFO] [stdout] 692 |         let dy = (image_center.1 + (outer_radius * theta_cw.sin())) as usize;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_dy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_dimensions`
[INFO] [stdout]    --> core/src/grid.rs:668:9
[INFO] [stdout]     |
[INFO] [stdout] 668 |         image_dimensions: (usize, usize),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_dimensions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wall`
[INFO] [stdout]    --> core/src/grid.rs:670:9
[INFO] [stdout]     |
[INFO] [stdout] 670 |         wall: Color,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_wall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> core/src/grid.rs:671:13
[INFO] [stdout]     |
[INFO] [stdout] 671 |         mut data: impl AsMut<[u8]>,
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> core/src/grid.rs:671:9
[INFO] [stdout]     |
[INFO] [stdout] 671 |         mut data: impl AsMut<[u8]>,
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0507, E0596, E0599, E0609.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core` (lib) due to 22 previous errors; 12 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "153cf3c919ccb9c9f7680b62e46c9cae7a69536825b672f1b55ba79a217016e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "153cf3c919ccb9c9f7680b62e46c9cae7a69536825b672f1b55ba79a217016e5", kill_on_drop: false }`
[INFO] [stdout] 153cf3c919ccb9c9f7680b62e46c9cae7a69536825b672f1b55ba79a217016e5
