[INFO] cloning repository https://github.com/dpl0/gemub
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dpl0/gemub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpl0%2Fgemub", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpl0%2Fgemub'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 995f0dc826083ddd164f31a441ebddbdd48c92b3
[INFO] checking dpl0/gemub against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpl0%2Fgemub" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dpl0/gemub on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dpl0/gemub
[INFO] finished tweaking git repo https://github.com/dpl0/gemub
[INFO] tweaked toml for git repo https://github.com/dpl0/gemub written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/dpl0/gemub already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be8bc21427effc7424402eda46d94daef6d7d23f19a50120886bddc8bdcc5c6a
[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" "be8bc21427effc7424402eda46d94daef6d7d23f19a50120886bddc8bdcc5c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be8bc21427effc7424402eda46d94daef6d7d23f19a50120886bddc8bdcc5c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be8bc21427effc7424402eda46d94daef6d7d23f19a50120886bddc8bdcc5c6a", kill_on_drop: false }`
[INFO] [stdout] be8bc21427effc7424402eda46d94daef6d7d23f19a50120886bddc8bdcc5c6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d28596dbad1a1db3a28a45aa63f66c129d9bfed8c33e918a2aa178f027aeb065
[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" "d28596dbad1a1db3a28a45aa63f66c129d9bfed8c33e918a2aa178f027aeb065", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking gemub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/gameboy/bus.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let buf = buf; // Shadow into an inmutable Copy.
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/gameboy/bus.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let buf = buf; // Shadow into an inmutable Copy.
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram`
[INFO] [stdout]   --> src/gameboy/bus.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     ram: Box<Vec<u8>>, // Store memory in heap.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram`
[INFO] [stdout]   --> src/gameboy/bus.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     ram: Box<Vec<u8>>, // Store memory in heap.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.68s
[INFO] running `Command { std: "docker" "inspect" "d28596dbad1a1db3a28a45aa63f66c129d9bfed8c33e918a2aa178f027aeb065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d28596dbad1a1db3a28a45aa63f66c129d9bfed8c33e918a2aa178f027aeb065", kill_on_drop: false }`
[INFO] [stdout] d28596dbad1a1db3a28a45aa63f66c129d9bfed8c33e918a2aa178f027aeb065