[INFO] cloning repository https://github.com/qreilly00/terminal-squares [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qreilly00/terminal-squares" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqreilly00%2Fterminal-squares", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqreilly00%2Fterminal-squares'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] deb68c96c852a845c817cbd203794589c5cb8af7 [INFO] testing qreilly00/terminal-squares against beta-2025-01-12 for beta-1.85-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqreilly00%2Fterminal-squares" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/qreilly00/terminal-squares on toolchain beta-2025-01-12 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-01-12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/qreilly00/terminal-squares [INFO] finished tweaking git repo https://github.com/qreilly00/terminal-squares [INFO] tweaked toml for git repo https://github.com/qreilly00/terminal-squares written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/qreilly00/terminal-squares 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" "+beta-2025-01-12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded wayland-protocols v0.32.3 [INFO] [stderr] Downloaded wayland-protocols-wlr v0.3.3 [INFO] [stderr] Downloaded wayland-protocols-plasma v0.3.3 [INFO] [stderr] Downloaded libc v0.2.157 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 69aee518b15df816514a1d7fc8f164880703cbf66ec546a9b55e7cd71590639b [INFO] running `Command { std: "docker" "start" "-a" "69aee518b15df816514a1d7fc8f164880703cbf66ec546a9b55e7cd71590639b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "69aee518b15df816514a1d7fc8f164880703cbf66ec546a9b55e7cd71590639b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69aee518b15df816514a1d7fc8f164880703cbf66ec546a9b55e7cd71590639b", kill_on_drop: false }` [INFO] [stdout] 69aee518b15df816514a1d7fc8f164880703cbf66ec546a9b55e7cd71590639b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b374e51551532a2b9dbfd60e79206c8f862b231e8d9c3280f0356bf2b3a434fa [INFO] running `Command { std: "docker" "start" "-a" "b374e51551532a2b9dbfd60e79206c8f862b231e8d9c3280f0356bf2b3a434fa", kill_on_drop: false }` [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling autocfg v1.3.0 [INFO] [stderr] Compiling bitflags v2.6.0 [INFO] [stderr] Compiling once_cell v1.19.0 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling log v0.4.22 [INFO] [stderr] Compiling libc v0.2.157 [INFO] [stderr] Compiling libloading v0.8.5 [INFO] [stderr] Compiling smallvec v1.13.2 [INFO] [stderr] Compiling pkg-config v0.3.30 [INFO] [stderr] Compiling rustix v0.38.34 [INFO] [stderr] Compiling linux-raw-sys v0.4.14 [INFO] [stderr] Compiling shlex v1.3.0 [INFO] [stderr] Compiling dlib v0.5.2 [INFO] [stderr] Compiling thiserror v1.0.63 [INFO] [stderr] Compiling cc v1.1.13 [INFO] [stderr] Compiling memchr v2.7.4 [INFO] [stderr] Compiling scoped-tls v1.0.1 [INFO] [stderr] Compiling downcast-rs v1.2.1 [INFO] [stderr] Compiling wayland-client v0.31.5 [INFO] [stderr] Compiling version_check v0.9.5 [INFO] [stderr] Compiling wayland-sys v0.31.4 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling quick-xml v0.34.0 [INFO] [stderr] Compiling syn v2.0.75 [INFO] [stderr] Compiling ahash v0.8.11 [INFO] [stderr] Compiling getrandom v0.2.15 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling zerocopy v0.7.35 [INFO] [stderr] Compiling bytemuck v1.17.0 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Compiling pin-project-lite v0.2.14 [INFO] [stderr] Compiling tracing-core v0.1.32 [INFO] [stderr] Compiling arrayvec v0.7.6 [INFO] [stderr] Compiling parking_lot_core v0.9.10 [INFO] [stderr] Compiling wayland-scanner v0.31.4 [INFO] [stderr] Compiling wayland-backend v0.3.6 [INFO] [stderr] Compiling libloading v0.7.4 [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling tracing v0.1.40 [INFO] [stderr] Compiling bit-vec v0.6.3 [INFO] [stderr] Compiling ash v0.37.3+1.3.251 [INFO] [stderr] Compiling termcolor v1.4.1 [INFO] [stderr] Compiling khronos-egl v4.1.0 [INFO] [stderr] Compiling unicode-width v0.1.13 [INFO] [stderr] Compiling allocator-api2 v0.2.18 [INFO] [stderr] Compiling scopeguard v1.2.0 [INFO] [stderr] Compiling codespan-reporting v0.11.1 [INFO] [stderr] Compiling spirv v0.2.0+1.5.4 [INFO] [stderr] Compiling hashbrown v0.14.5 [INFO] [stderr] Compiling bit-set v0.5.3 [INFO] [stderr] Compiling gpu-alloc-types v0.2.0 [INFO] [stderr] Compiling gpu-descriptor-types v0.1.2 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling raw-window-handle v0.5.2 [INFO] [stderr] Compiling hexf-parse v0.2.1 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling gpu-descriptor v0.2.4 [INFO] [stderr] Compiling parking_lot v0.12.3 [INFO] [stderr] Compiling gpu-alloc v0.5.4 [INFO] [stderr] Compiling wgpu-types v0.16.1 [INFO] [stderr] Compiling cursor-icon v1.1.0 [INFO] [stderr] Compiling strict-num v0.1.1 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Compiling profiling v1.0.15 [INFO] [stderr] Compiling arrayref v0.3.8 [INFO] [stderr] Compiling xkeysym v0.2.1 [INFO] [stderr] Compiling smithay-client-toolkit v0.19.2 [INFO] [stderr] Compiling ttf-parser v0.24.1 [INFO] [stderr] Compiling xcursor v0.3.8 [INFO] [stderr] Compiling renderdoc-sys v1.1.0 [INFO] [stderr] Compiling glow v0.12.3 [INFO] [stderr] Compiling tiny-skia-path v0.11.4 [INFO] [stderr] Compiling safe_arch v0.7.2 [INFO] [stderr] Compiling memmap2 v0.9.4 [INFO] [stderr] Compiling x11-dl v2.21.0 [INFO] [stderr] Compiling ab_glyph_rasterizer v0.1.8 [INFO] [stderr] Compiling cfg_aliases v0.2.1 [INFO] [stderr] Compiling naga v0.12.3 [INFO] [stderr] Compiling tiny-skia v0.11.4 [INFO] [stderr] Compiling winit v0.30.5 [INFO] [stderr] Compiling polling v3.7.3 [INFO] [stderr] Compiling wide v0.7.28 [INFO] [stderr] Compiling calloop v0.13.0 [INFO] [stderr] Compiling wayland-csd-frame v0.3.0 [INFO] [stderr] Compiling owned_ttf_parser v0.24.0 [INFO] [stderr] Compiling static_assertions v1.1.0 [INFO] [stderr] Compiling ab_glyph v0.2.28 [INFO] [stderr] Compiling as-raw-xcb-connection v1.0.1 [INFO] [stderr] Compiling x11rb-protocol v0.13.1 [INFO] [stderr] Compiling ultraviolet v0.9.2 [INFO] [stderr] Compiling xkbcommon-dl v0.4.2 [INFO] [stderr] Compiling smol_str v0.2.2 [INFO] [stderr] Compiling wayland-protocols v0.32.3 [INFO] [stderr] Compiling wayland-cursor v0.31.5 [INFO] [stderr] Compiling calloop-wayland-source v0.3.0 [INFO] [stderr] Compiling percent-encoding v2.3.1 [INFO] [stderr] Compiling pollster v0.3.0 [INFO] [stderr] Compiling dpi v0.1.1 [INFO] [stderr] Compiling raw-window-handle v0.6.2 [INFO] [stderr] Compiling wgpu-hal v0.16.2 [INFO] [stderr] Compiling wayland-protocols-wlr v0.3.3 [INFO] [stderr] Compiling wayland-protocols-plasma v0.3.3 [INFO] [stderr] Compiling sctk-adwaita v0.10.1 [INFO] [stderr] Compiling wgpu-core v0.16.1 [INFO] [stderr] Compiling wgpu v0.16.3 [INFO] [stderr] Compiling x11rb v0.13.1 [INFO] [stderr] Compiling pixels v0.13.0 [INFO] [stderr] Compiling terminal-squares v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `wgpu::Color` [INFO] [stdout] --> src/main.rs:242:9 [INFO] [stdout] | [INFO] [stdout] 242 | wgpu::Color, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `WindowId` [INFO] [stdout] --> src/main.rs:354:13 [INFO] [stdout] | [INFO] [stdout] 354 | WindowId, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `event_loop` [INFO] [stdout] --> src/main.rs:340:37 [INFO] [stdout] | [INFO] [stdout] 340 | fn about_to_wait(&mut self, event_loop: &ActiveEventLoop) { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_loop` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:372:18 [INFO] [stdout] | [INFO] [stdout] 372 | for (i, pixel) in self.pixels.frame_mut().chunks_exact_mut(4).enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:379:13 [INFO] [stdout] | [INFO] [stdout] 379 | self.pixels.render(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 379 | let _ = self.pixels.render(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 07s [INFO] running `Command { std: "docker" "inspect" "b374e51551532a2b9dbfd60e79206c8f862b231e8d9c3280f0356bf2b3a434fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b374e51551532a2b9dbfd60e79206c8f862b231e8d9c3280f0356bf2b3a434fa", kill_on_drop: false }` [INFO] [stdout] b374e51551532a2b9dbfd60e79206c8f862b231e8d9c3280f0356bf2b3a434fa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a7da9b94d23aee686a02ff51ddd9784f6c9e02d242c34dd0f1f88753d4af3814 [INFO] running `Command { std: "docker" "start" "-a" "a7da9b94d23aee686a02ff51ddd9784f6c9e02d242c34dd0f1f88753d4af3814", kill_on_drop: false }` [INFO] [stderr] Compiling terminal-squares v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `wgpu::Color` [INFO] [stdout] --> src/main.rs:242:9 [INFO] [stdout] | [INFO] [stdout] 242 | wgpu::Color, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `WindowId` [INFO] [stdout] --> src/main.rs:354:13 [INFO] [stdout] | [INFO] [stdout] 354 | WindowId, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `event_loop` [INFO] [stdout] --> src/main.rs:340:37 [INFO] [stdout] | [INFO] [stdout] 340 | fn about_to_wait(&mut self, event_loop: &ActiveEventLoop) { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_loop` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:372:18 [INFO] [stdout] | [INFO] [stdout] 372 | for (i, pixel) in self.pixels.frame_mut().chunks_exact_mut(4).enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:379:13 [INFO] [stdout] | [INFO] [stdout] 379 | self.pixels.render(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 379 | let _ = self.pixels.render(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 2.45s [INFO] running `Command { std: "docker" "inspect" "a7da9b94d23aee686a02ff51ddd9784f6c9e02d242c34dd0f1f88753d4af3814", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7da9b94d23aee686a02ff51ddd9784f6c9e02d242c34dd0f1f88753d4af3814", kill_on_drop: false }` [INFO] [stdout] a7da9b94d23aee686a02ff51ddd9784f6c9e02d242c34dd0f1f88753d4af3814 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b6aa8956b77142fef438d3bc49ab4830f4c70f321510df80f7b52a35d87693ed [INFO] running `Command { std: "docker" "start" "-a" "b6aa8956b77142fef438d3bc49ab4830f4c70f321510df80f7b52a35d87693ed", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `wgpu::Color` [INFO] [stderr] --> src/main.rs:242:9 [INFO] [stderr] | [INFO] [stderr] 242 | wgpu::Color, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `WindowId` [INFO] [stderr] --> src/main.rs:354:13 [INFO] [stderr] | [INFO] [stderr] 354 | WindowId, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `event_loop` [INFO] [stderr] --> src/main.rs:340:37 [INFO] [stderr] | [INFO] [stderr] 340 | fn about_to_wait(&mut self, event_loop: &ActiveEventLoop) { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_loop` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:372:18 [INFO] [stderr] | [INFO] [stderr] 372 | for (i, pixel) in self.pixels.frame_mut().chunks_exact_mut(4).enumerate() { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/main.rs:379:13 [INFO] [stderr] | [INFO] [stderr] 379 | self.pixels.render(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 379 | let _ = self.pixels.render(); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `terminal-squares` (bin "terminal-squares" test) generated 5 warnings (run `cargo fix --bin "terminal-squares" --tests` to apply 2 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/terminal_squares-1208c095e4c5ee54) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b6aa8956b77142fef438d3bc49ab4830f4c70f321510df80f7b52a35d87693ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6aa8956b77142fef438d3bc49ab4830f4c70f321510df80f7b52a35d87693ed", kill_on_drop: false }` [INFO] [stdout] b6aa8956b77142fef438d3bc49ab4830f4c70f321510df80f7b52a35d87693ed