[INFO] cloning repository https://github.com/notryanb/rust_snake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/notryanb/rust_snake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotryanb%2Frust_snake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotryanb%2Frust_snake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e587778a994fc846f9b6c94269d95ac0795e5fd7
[INFO] checking notryanb/rust_snake against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotryanb%2Frust_snake" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/notryanb/rust_snake on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/notryanb/rust_snake
[INFO] finished tweaking git repo https://github.com/notryanb/rust_snake
[INFO] tweaked toml for git repo https://github.com/notryanb/rust_snake written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/notryanb/rust_snake already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77451cc874dbf3a6face6d44f98fcbe5dd0b160439e9099c659b7a572effff71
[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" "77451cc874dbf3a6face6d44f98fcbe5dd0b160439e9099c659b7a572effff71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77451cc874dbf3a6face6d44f98fcbe5dd0b160439e9099c659b7a572effff71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77451cc874dbf3a6face6d44f98fcbe5dd0b160439e9099c659b7a572effff71", kill_on_drop: false }`
[INFO] [stdout] 77451cc874dbf3a6face6d44f98fcbe5dd0b160439e9099c659b7a572effff71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4954f49a356a79b407b28d7d12c9230b9579f43e33d89c35cd14775284fc7a3e
[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" "4954f49a356a79b407b28d7d12c9230b9579f43e33d89c35cd14775284fc7a3e", kill_on_drop: false }`
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking rust_snake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `style`
[INFO] [stdout]  --> src/board.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use termion::{color, style};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `color`, `style`
[INFO] [stdout]  --> src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use termion::{color,style};
[INFO] [stdout]   |               ^^^^^ ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]   --> src/board.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     width: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `style`
[INFO] [stdout]  --> src/board.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use termion::{color, style};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `color`, `style`
[INFO] [stdout]  --> src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use termion::{color,style};
[INFO] [stdout]   |               ^^^^^ ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/board.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 | /             match cell.x % self.height {
[INFO] [stdout] 60 | |                 0 => write!(f, "{}\n", color::Fg(color::Green)),
[INFO] [stdout] 61 | |                 _ => write!(f, "{}", color::Fg(color::Blue))
[INFO] [stdout] 62 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]   --> src/board.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let grid: Vec<Cell> = Vec::with_capacity((width * height) as usize);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/board.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 | /             match cell.x % self.height {
[INFO] [stdout] 60 | |                 0 => write!(f, "{}\n", color::Fg(color::Green)),
[INFO] [stdout] 61 | |                 _ => write!(f, "{}", color::Fg(color::Blue))
[INFO] [stdout] 62 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "4954f49a356a79b407b28d7d12c9230b9579f43e33d89c35cd14775284fc7a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4954f49a356a79b407b28d7d12c9230b9579f43e33d89c35cd14775284fc7a3e", kill_on_drop: false }`
[INFO] [stdout] 4954f49a356a79b407b28d7d12c9230b9579f43e33d89c35cd14775284fc7a3e