[INFO] fetching crate rengine 0.0.2...
[INFO] checking rengine-0.0.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate rengine 0.0.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rengine 0.0.2 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rengine 0.0.2
[INFO] finished tweaking crates.io crate rengine 0.0.2
[INFO] tweaked toml for crates.io crate rengine 0.0.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate rengine 0.0.2 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbea68653a014f81f444dea75ac1c9bd47f6fc9d271b3fe16003afd3e4236b48
[INFO] running `Command { std: "docker" "start" "-a" "bbea68653a014f81f444dea75ac1c9bd47f6fc9d271b3fe16003afd3e4236b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbea68653a014f81f444dea75ac1c9bd47f6fc9d271b3fe16003afd3e4236b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbea68653a014f81f444dea75ac1c9bd47f6fc9d271b3fe16003afd3e4236b48", kill_on_drop: false }`
[INFO] [stdout] bbea68653a014f81f444dea75ac1c9bd47f6fc9d271b3fe16003afd3e4236b48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd88d1091977b7f2cbc93e175fbd367685e700a671577b78670e2c19302a142f
[INFO] running `Command { std: "docker" "start" "-a" "dd88d1091977b7f2cbc93e175fbd367685e700a671577b78670e2c19302a142f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking sdl2-sys v0.35.2
[INFO] [stderr]     Checking rengine v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `pixels::Color`
[INFO] [stdout]  --> src/engine/game.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sdl2::{pixels::Color, render::WindowCanvas, EventPump, Sdl, VideoSubsystem};
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]  --> src/engine/game_builder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sdl2::pixels::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `pixels::Color`
[INFO] [stdout]  --> src/engine/game.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sdl2::{pixels::Color, render::WindowCanvas, EventPump, Sdl, VideoSubsystem};
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]  --> src/engine/game_builder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sdl2::pixels::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/engine/game_builder.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut canvas = window.into_canvas().build().map_err(|e| e.to_string())?;
[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/engine/game_builder.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut canvas = window.into_canvas().build().map_err(|e| e.to_string())?;
[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: fields `sdl` and `video_subsystem` are never read
[INFO] [stdout]  --> src/engine/game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Game<'a> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 7 |     settings: &'a GameSettings,
[INFO] [stdout] 8 |     sdl: Sdl,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 9 |     video_subsystem: VideoSubsystem,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reserved` is never read
[INFO] [stdout]  --> src/engine/game_builder.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct GameBuilder<'a> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     reserved: &'a (),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sdl` and `video_subsystem` are never read
[INFO] [stdout]  --> src/engine/game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Game<'a> {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 7 |     settings: &'a GameSettings,
[INFO] [stdout] 8 |     sdl: Sdl,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 9 |     video_subsystem: VideoSubsystem,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reserved` is never read
[INFO] [stdout]  --> src/engine/game_builder.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct GameBuilder<'a> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     reserved: &'a (),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "dd88d1091977b7f2cbc93e175fbd367685e700a671577b78670e2c19302a142f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd88d1091977b7f2cbc93e175fbd367685e700a671577b78670e2c19302a142f", kill_on_drop: false }`
[INFO] [stdout] dd88d1091977b7f2cbc93e175fbd367685e700a671577b78670e2c19302a142f