[INFO] cloning repository https://github.com/wvandyk/tetris-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wvandyk/tetris-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvandyk%2Ftetris-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvandyk%2Ftetris-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa908bbc1fc33123a31332332db90a12f9fbb5eb
[INFO] checking wvandyk/tetris-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvandyk%2Ftetris-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wvandyk/tetris-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wvandyk/tetris-rust
[INFO] finished tweaking git repo https://github.com/wvandyk/tetris-rust
[INFO] tweaked toml for git repo https://github.com/wvandyk/tetris-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wvandyk/tetris-rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad3357042e2228ef7848580865de18c222c40aca3431f000290c173804b5da68
[INFO] running `Command { std: "docker" "start" "-a" "ad3357042e2228ef7848580865de18c222c40aca3431f000290c173804b5da68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad3357042e2228ef7848580865de18c222c40aca3431f000290c173804b5da68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad3357042e2228ef7848580865de18c222c40aca3431f000290c173804b5da68", kill_on_drop: false }`
[INFO] [stdout] ad3357042e2228ef7848580865de18c222c40aca3431f000290c173804b5da68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19a20f63c276b8714d049a9ba41440b50b60507baf1f95d1a76ff130c6bbb8e2
[INFO] running `Command { std: "docker" "start" "-a" "19a20f63c276b8714d049a9ba41440b50b60507baf1f95d1a76ff130c6bbb8e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.36.0
[INFO] [stderr]    Compiling sdl2-sys v0.36.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tetris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]    --> src/tetris_game_graphics.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub struct Sprite<'a> {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 183 |     pub texture: sdl2::render::Texture<'a>,
[INFO] [stdout] 184 |     pub width: u32,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 185 |     pub height: u32,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetPalette` is never used
[INFO] [stdout]    --> src/tetris_game_graphics.rs:235:11
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub trait GetPalette {
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]    --> src/tetris_game_graphics.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub struct Sprite<'a> {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 183 |     pub texture: sdl2::render::Texture<'a>,
[INFO] [stdout] 184 |     pub width: u32,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 185 |     pub height: u32,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetPalette` is never used
[INFO] [stdout]    --> src/tetris_game_graphics.rs:235:11
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub trait GetPalette {
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.53s
[INFO] running `Command { std: "docker" "inspect" "19a20f63c276b8714d049a9ba41440b50b60507baf1f95d1a76ff130c6bbb8e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a20f63c276b8714d049a9ba41440b50b60507baf1f95d1a76ff130c6bbb8e2", kill_on_drop: false }`
[INFO] [stdout] 19a20f63c276b8714d049a9ba41440b50b60507baf1f95d1a76ff130c6bbb8e2
[INFO] checking wvandyk/tetris-rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvandyk%2Ftetris-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wvandyk/tetris-rust on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wvandyk/tetris-rust
[INFO] finished tweaking git repo https://github.com/wvandyk/tetris-rust
[INFO] tweaked toml for git repo https://github.com/wvandyk/tetris-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/wvandyk/tetris-rust 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 303be116f416f10fe54c680159d8ce9a749e8c58e261cff497c02e390be6794e
[INFO] running `Command { std: "docker" "start" "-a" "303be116f416f10fe54c680159d8ce9a749e8c58e261cff497c02e390be6794e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "303be116f416f10fe54c680159d8ce9a749e8c58e261cff497c02e390be6794e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "303be116f416f10fe54c680159d8ce9a749e8c58e261cff497c02e390be6794e", kill_on_drop: false }`
[INFO] [stdout] 303be116f416f10fe54c680159d8ce9a749e8c58e261cff497c02e390be6794e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d06b81dee14273702b778fc4906895a345c9bcceb11bdecebcc2e488feb0ad9d
[INFO] running `Command { std: "docker" "start" "-a" "d06b81dee14273702b778fc4906895a345c9bcceb11bdecebcc2e488feb0ad9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.36.0
[INFO] [stderr]    Compiling sdl2-sys v0.36.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tetris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]    --> src/tetris_game_graphics.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub struct Sprite<'a> {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 183 |     pub texture: sdl2::render::Texture<'a>,
[INFO] [stdout] 184 |     pub width: u32,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 185 |     pub height: u32,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetPalette` is never used
[INFO] [stdout]    --> src/tetris_game_graphics.rs:235:11
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub trait GetPalette {
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]    --> src/tetris_game_graphics.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub struct Sprite<'a> {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 183 |     pub texture: sdl2::render::Texture<'a>,
[INFO] [stdout] 184 |     pub width: u32,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 185 |     pub height: u32,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GetPalette` is never used
[INFO] [stdout]    --> src/tetris_game_graphics.rs:235:11
[INFO] [stdout]     |
[INFO] [stdout] 235 | pub trait GetPalette {
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.41s
[INFO] running `Command { std: "docker" "inspect" "d06b81dee14273702b778fc4906895a345c9bcceb11bdecebcc2e488feb0ad9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d06b81dee14273702b778fc4906895a345c9bcceb11bdecebcc2e488feb0ad9d", kill_on_drop: false }`
[INFO] [stdout] d06b81dee14273702b778fc4906895a345c9bcceb11bdecebcc2e488feb0ad9d