[INFO] cloning repository https://github.com/teevik/piston-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teevik/piston-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteevik%2Fpiston-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteevik%2Fpiston-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c9292ff793746b7274ebf7548b678f6c5bd80f2
[INFO] building teevik/piston-test against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteevik%2Fpiston-test" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/teevik/piston-test on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/teevik/piston-test
[INFO] finished tweaking git repo https://github.com/teevik/piston-test
[INFO] tweaked toml for git repo https://github.com/teevik/piston-test written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/teevik/piston-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded piston-graphics_api_version v1.0.0
[INFO] [stderr]   Downloaded glutin_emscripten_sys v0.1.1
[INFO] [stderr]   Downloaded pistoncore-input v1.0.0
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.66.0
[INFO] [stderr]   Downloaded piston2d-graphics v0.37.0
[INFO] [stderr]   Downloaded num-rational v0.3.0
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.52.0
[INFO] [stderr]   Downloaded rayon-core v1.8.0
[INFO] [stderr]   Downloaded camera_controllers v0.32.0
[INFO] [stderr]   Downloaded piston v0.52.0
[INFO] [stderr]   Downloaded num-iter v0.1.41
[INFO] [stderr]   Downloaded rayon v1.4.0
[INFO] [stderr]   Downloaded image v0.23.9
[INFO] [stderr]   Downloaded piston3d-cam v0.4.0
[INFO] [stderr]   Downloaded piston2d-drag_controller v0.30.0
[INFO] [stderr]   Downloaded tiff v0.5.0
[INFO] [stderr]   Downloaded piston2d-deform_grid v0.7.0
[INFO] [stderr]   Downloaded piston-gfx_texture v0.41.0
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.70.0
[INFO] [stderr]   Downloaded cc v1.0.59
[INFO] [stderr]   Downloaded piston_window v0.112.0
[INFO] [stderr]   Downloaded miniz_oxide v0.4.1
[INFO] [stderr]   Downloaded pistoncore-window v0.47.0
[INFO] [stderr]   Downloaded shader_version v0.7.0
[INFO] [stderr]   Downloaded piston2d-sprite v0.61.0
[INFO] [stderr]   Downloaded piston-ai_behavior v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ee39c86cc04a843560439fd28ad007d8e1b0b6d214cf7e0d6886221df2a87ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5ee39c86cc04a843560439fd28ad007d8e1b0b6d214cf7e0d6886221df2a87ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ee39c86cc04a843560439fd28ad007d8e1b0b6d214cf7e0d6886221df2a87ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ee39c86cc04a843560439fd28ad007d8e1b0b6d214cf7e0d6886221df2a87ba", kill_on_drop: false }`
[INFO] [stdout] 5ee39c86cc04a843560439fd28ad007d8e1b0b6d214cf7e0d6886221df2a87ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3debab0afe5e10ad9d124cb36120191bc2927680c9c44e0efa9cd42894636542
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3debab0afe5e10ad9d124cb36120191bc2927680c9c44e0efa9cd42894636542", kill_on_drop: false }`
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[INFO] [stderr]    Compiling byteorder v1.3.4
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[INFO] [stderr]    Compiling khronos_api v3.1.0
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[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling piston-graphics_api_version v1.0.0
[INFO] [stderr]    Compiling xdg v2.2.0
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[INFO] [stderr]    Compiling piston3d-cam v0.4.0
[INFO] [stderr]    Compiling wayland-sys v0.21.13
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[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
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[INFO] [stderr]    Compiling gfx v0.18.2
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[INFO] [stderr]    Compiling piston2d-graphics v0.37.0
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling piston2d-deform_grid v0.7.0
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling wayland-commons v0.21.13
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling image v0.23.9
[INFO] [stderr]    Compiling gfx_device_gl v0.16.2
[INFO] [stderr]    Compiling smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling piston-gfx_texture v0.41.0
[INFO] [stderr]    Compiling piston2d-gfx_graphics v0.70.0
[INFO] [stderr]    Compiling pistoncore-input v1.0.0
[INFO] [stderr]    Compiling winit v0.19.5
[INFO] [stderr]    Compiling pistoncore-window v0.47.0
[INFO] [stderr]    Compiling piston-ai_behavior v0.32.0
[INFO] [stderr]    Compiling piston2d-drag_controller v0.30.0
[INFO] [stderr]    Compiling camera_controllers v0.32.0
[INFO] [stderr]    Compiling pistoncore-event_loop v0.52.0
[INFO] [stderr]    Compiling piston v0.52.0
[INFO] [stderr]    Compiling piston2d-sprite v0.61.0
[INFO] [stderr]    Compiling glutin v0.21.2
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.66.0
[INFO] [stderr]    Compiling piston_window v0.112.0
[INFO] [stderr]    Compiling spinning-square v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `vec2_cast`
[INFO] [stdout]  --> src/cell_grid.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 | use vecmath::{Vector2, vec2_add, vec2_cast};
[INFO] [stdout]   |                                  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Chunk`
[INFO] [stdout]  --> src/cell_grid.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::{Itertools, Chunk};
[INFO] [stdout]   |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::f32::INFINITY`
[INFO] [stdout]   --> src/cell_grid.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::f32::INFINITY;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/cell_grid.rs:250:23
[INFO] [stdout]     |
[INFO] [stdout] 250 |         for column in (0..5) {
[INFO] [stdout]     |                       ^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/cell_grid.rs:251:24
[INFO] [stdout]     |
[INFO] [stdout] 251 |             for row in (0..3) {
[INFO] [stdout]     |                        ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Vector2`, `vec2_mul`, `vec2_sub`
[INFO] [stdout]  --> src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use vecmath::{Vector2, vec2_mul, vec2_scale, vec2_sub};
[INFO] [stdout]   |               ^^^^^^^  ^^^^^^^^              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Filter`, `G2d`
[INFO] [stdout]  --> src/main.rs:7:110
[INFO] [stdout]   |
[INFO] [stdout] 7 | use piston_window::{clear, WindowSettings, OpenGL, PistonWindow, RenderEvent, MouseCursorEvent, Transformed, Filter, math, G2d, PressEven...
[INFO] [stdout]   |                                                                                                              ^^^^^^        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::constants::CHUNK_SIZE`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::constants::CHUNK_SIZE;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vecmath::traits::Cast`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use vecmath::traits::Cast;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Itertools`
[INFO] [stdout]  --> src/cell_grid.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::{Itertools, Chunk};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `live_cell`
[INFO] [stdout]    --> src/cell_grid.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |             Cell::Live(live_cell) => Rgba([0, 0, 0, 255])
[INFO] [stdout]     |                        ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_live_cell`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_even`
[INFO] [stdout]    --> src/cell_grid.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let is_even = current_frame % 2 == 0;
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_even`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `neighbor_chunks`
[INFO] [stdout]    --> src/cell_grid.rs:178:50
[INFO] [stdout]     |
[INFO] [stdout] 178 |     pub fn update(&mut self, current_frame: u64, neighbor_chunks: [Option<&mut CellChunk>; 8]) {
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_neighbor_chunks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cell_grid.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let mut cells = [[Cell::Empty; CHUNK_SIZE]; CHUNK_SIZE];
[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/cell_grid.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |         let mut canvas = ImageBuffer::new(CHUNK_SIZE as u32, CHUNK_SIZE as u32);
[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/cell_grid.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let mut texture = Texture::from_image(
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:316:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] 316 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [-1, -1]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:317:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] 316 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [-1, -1]),
[INFO] [stdout] 317 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [0, -1]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:318:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 318 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [1, -1]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:319:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 319 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [-1, 0]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:320:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 320 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [1, 0]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:321:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 321 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [-1, 1]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:322:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 322 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [0, 1]),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `self.chunks` as mutable more than once at a time
[INFO] [stdout]    --> src/cell_grid.rs:323:45
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let chunk = self.chunks.get_mut(&chunk_position);
[INFO] [stdout]     |                             ----------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 315 |                     chunk.update(current_frame, [
[INFO] [stdout]     |                           ------ first borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 323 |                         get_chunk_at_offset(&mut self.chunks, chunk_position, [1, 1])
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors; 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spinning-square`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3debab0afe5e10ad9d124cb36120191bc2927680c9c44e0efa9cd42894636542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3debab0afe5e10ad9d124cb36120191bc2927680c9c44e0efa9cd42894636542", kill_on_drop: false }`
[INFO] [stdout] 3debab0afe5e10ad9d124cb36120191bc2927680c9c44e0efa9cd42894636542
