[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 beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarrettpauls%2Frust2048" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garrettpauls/rust2048 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-5/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" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7e1acc8cea24ecb15a5939214ceb0295888fcd3f5c5336f3c1125c6c16b88cb
[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" "f7e1acc8cea24ecb15a5939214ceb0295888fcd3f5c5336f3c1125c6c16b88cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7e1acc8cea24ecb15a5939214ceb0295888fcd3f5c5336f3c1125c6c16b88cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7e1acc8cea24ecb15a5939214ceb0295888fcd3f5c5336f3c1125c6c16b88cb", kill_on_drop: false }`
[INFO] [stdout] f7e1acc8cea24ecb15a5939214ceb0295888fcd3f5c5336f3c1125c6c16b88cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a9b5fa9a989b1506fa525d4116becb5446c11b90823e335247936a08e65bfae
[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" "9a9b5fa9a989b1506fa525d4116becb5446c11b90823e335247936a08e65bfae", 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 2.20s
[INFO] running `Command { std: "docker" "inspect" "9a9b5fa9a989b1506fa525d4116becb5446c11b90823e335247936a08e65bfae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a9b5fa9a989b1506fa525d4116becb5446c11b90823e335247936a08e65bfae", kill_on_drop: false }`
[INFO] [stdout] 9a9b5fa9a989b1506fa525d4116becb5446c11b90823e335247936a08e65bfae