[INFO] cloning repository https://github.com/garrettpauls/rust2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/garrettpauls/rust2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarrettpauls%2Frust2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarrettpauls%2Frust2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64d1ea1f04c2ae355b32b3e9121ffa28685c4281
[INFO] checking garrettpauls/rust2048 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarrettpauls%2Frust2048" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garrettpauls/rust2048 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garrettpauls/rust2048
[INFO] finished tweaking git repo https://github.com/garrettpauls/rust2048
[INFO] tweaked toml for git repo https://github.com/garrettpauls/rust2048 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/garrettpauls/rust2048 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6539bfa287289b122c3e4ca1b3d34f166efccf77c5fa678003ff3e53766341b4
[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" "6539bfa287289b122c3e4ca1b3d34f166efccf77c5fa678003ff3e53766341b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6539bfa287289b122c3e4ca1b3d34f166efccf77c5fa678003ff3e53766341b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6539bfa287289b122c3e4ca1b3d34f166efccf77c5fa678003ff3e53766341b4", kill_on_drop: false }`
[INFO] [stdout] 6539bfa287289b122c3e4ca1b3d34f166efccf77c5fa678003ff3e53766341b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb5ace946476dbfea3b042728f1136389da8c8eff9f7c43a84a15e2dbd3a958d
[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" "eb5ace946476dbfea3b042728f1136389da8c8eff9f7c43a84a15e2dbd3a958d", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking getch v0.2.0
[INFO] [stderr]     Checking rand v0.5.1
[INFO] [stderr]     Checking twentyfortyeight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `state::*`
[INFO] [stdout]   --> src/logic.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     use state::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `merge`
[INFO] [stdout]   --> src/logic.rs:82:42
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn shift_left(mut state: &mut GameState, merge: bool) -> bool {
[INFO] [stdout]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_merge`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/logic.rs:120:16
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn shift_right(state: &mut GameState) -> bool {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/logic.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn shift_up(state: &mut GameState) -> bool {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/logic.rs:128:15
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn shift_down(state: &mut GameState) -> bool {
[INFO] [stdout]     |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `merge`
[INFO] [stdout]   --> src/logic.rs:82:42
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn shift_left(mut state: &mut GameState, merge: bool) -> bool {
[INFO] [stdout]    |                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_merge`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/logic.rs:120:16
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn shift_right(state: &mut GameState) -> bool {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/logic.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn shift_up(state: &mut GameState) -> bool {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/logic.rs:128:15
[INFO] [stdout]     |
[INFO] [stdout] 128 | fn shift_down(state: &mut GameState) -> bool {
[INFO] [stdout]     |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.33s
[INFO] running `Command { std: "docker" "inspect" "eb5ace946476dbfea3b042728f1136389da8c8eff9f7c43a84a15e2dbd3a958d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb5ace946476dbfea3b042728f1136389da8c8eff9f7c43a84a15e2dbd3a958d", kill_on_drop: false }`
[INFO] [stdout] eb5ace946476dbfea3b042728f1136389da8c8eff9f7c43a84a15e2dbd3a958d