[INFO] cloning repository https://github.com/lucascaro/rust-snake-game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lucascaro/rust-snake-game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucascaro%2Frust-snake-game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucascaro%2Frust-snake-game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b649cd4766e0fd28c1fddbaf67b586f0bae05068
[INFO] checking lucascaro/rust-snake-game against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucascaro%2Frust-snake-game" "/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/lucascaro/rust-snake-game on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lucascaro/rust-snake-game
[INFO] finished tweaking git repo https://github.com/lucascaro/rust-snake-game
[INFO] tweaked toml for git repo https://github.com/lucascaro/rust-snake-game written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lucascaro/rust-snake-game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 621ceaeba039c9e68daf9995014cffaa9c21f845b12a8c3dca5ce61348ffb308
[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" "621ceaeba039c9e68daf9995014cffaa9c21f845b12a8c3dca5ce61348ffb308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "621ceaeba039c9e68daf9995014cffaa9c21f845b12a8c3dca5ce61348ffb308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "621ceaeba039c9e68daf9995014cffaa9c21f845b12a8c3dca5ce61348ffb308", kill_on_drop: false }`
[INFO] [stdout] 621ceaeba039c9e68daf9995014cffaa9c21f845b12a8c3dca5ce61348ffb308
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1f99aa5faf3cefd36d747295f7669bafc4f799538cb4dd186c52ebc00586988
[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" "f1f99aa5faf3cefd36d747295f7669bafc4f799538cb4dd186c52ebc00586988", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling xml-rs v0.8.3
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[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling pkg-config v0.3.19
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[INFO] [stderr]    Compiling nix v0.18.0
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[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
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[INFO] [stderr]     Checking image v0.23.12
[INFO] [stderr]    Compiling serde_derive v1.0.123
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[INFO] [stderr]     Checking snake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]   --> src/score.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn from(file_name: &str) -> Score {
[INFO] [stdout]    |               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]   --> src/score.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn from(file_name: &str) -> Score {
[INFO] [stdout]    |               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Score`
[INFO] [stdout]  --> src/score.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Score {
[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: `new`
[INFO] [stdout]  --> src/score.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |   pub fn new() -> Score {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/score.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn from(file_name: &str) -> Score {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_score`
[INFO] [stdout]   --> src/score.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |   pub fn set_score(&mut self, score: u32) {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Score`
[INFO] [stdout]  --> src/score.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Score {
[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: `new`
[INFO] [stdout]  --> src/score.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |   pub fn new() -> Score {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/score.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn from(file_name: &str) -> Score {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_score`
[INFO] [stdout]   --> src/score.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |   pub fn set_score(&mut self, score: u32) {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] running `Command { std: "docker" "inspect" "f1f99aa5faf3cefd36d747295f7669bafc4f799538cb4dd186c52ebc00586988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f99aa5faf3cefd36d747295f7669bafc4f799538cb4dd186c52ebc00586988", kill_on_drop: false }`
[INFO] [stdout] f1f99aa5faf3cefd36d747295f7669bafc4f799538cb4dd186c52ebc00586988