[INFO] cloning repository https://github.com/cburchert/rust_invaders
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cburchert/rust_invaders" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcburchert%2Frust_invaders", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcburchert%2Frust_invaders'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 224444d051707819b606634b3d0b3354d23cbf08
[INFO] checking cburchert/rust_invaders against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcburchert%2Frust_invaders" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cburchert/rust_invaders on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cburchert/rust_invaders
[INFO] finished tweaking git repo https://github.com/cburchert/rust_invaders
[INFO] tweaked toml for git repo https://github.com/cburchert/rust_invaders written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/cburchert/rust_invaders already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af4a7bbe464b1b8714ef6f7f32dcf17a0f999ef57fdd3c6dc521fbf93313c1c9
[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" "af4a7bbe464b1b8714ef6f7f32dcf17a0f999ef57fdd3c6dc521fbf93313c1c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af4a7bbe464b1b8714ef6f7f32dcf17a0f999ef57fdd3c6dc521fbf93313c1c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af4a7bbe464b1b8714ef6f7f32dcf17a0f999ef57fdd3c6dc521fbf93313c1c9", kill_on_drop: false }`
[INFO] [stdout] af4a7bbe464b1b8714ef6f7f32dcf17a0f999ef57fdd3c6dc521fbf93313c1c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d01d98aec83cc6b4b8bc3872fc95c3834565be6c6e9a6cb18ff3d87723bd372
[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" "8d01d98aec83cc6b4b8bc3872fc95c3834565be6c6e9a6cb18ff3d87723bd372", kill_on_drop: false }`
[INFO] [stderr]    Compiling sfml-build v0.3.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking widestring v0.4.3
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]    Compiling csfml-system-sys v0.5.0
[INFO] [stderr]    Compiling csfml-window-sys v0.5.0
[INFO] [stderr]    Compiling csfml-audio-sys v0.5.0
[INFO] [stderr]    Compiling csfml-graphics-sys v0.5.0
[INFO] [stderr]     Checking sfml v0.15.1
[INFO] [stderr]     Checking rust_invaders v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `mut_at`
[INFO] [stdout]   --> src/matrix.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn mut_at(&mut self, col: usize, row: usize) -> &mut T {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mut_at`
[INFO] [stdout]   --> src/matrix.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn mut_at(&mut self, col: usize, row: usize) -> &mut T {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.56s
[INFO] running `Command { std: "docker" "inspect" "8d01d98aec83cc6b4b8bc3872fc95c3834565be6c6e9a6cb18ff3d87723bd372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d01d98aec83cc6b4b8bc3872fc95c3834565be6c6e9a6cb18ff3d87723bd372", kill_on_drop: false }`
[INFO] [stdout] 8d01d98aec83cc6b4b8bc3872fc95c3834565be6c6e9a6cb18ff3d87723bd372