[INFO] fetching crate at4_protocol 2.1.1...
[INFO] checking at4_protocol-2.1.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate at4_protocol 2.1.1 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate at4_protocol 2.1.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate at4_protocol 2.1.1
[INFO] finished tweaking crates.io crate at4_protocol 2.1.1
[INFO] tweaked toml for crates.io crate at4_protocol 2.1.1 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate crates.io crate at4_protocol 2.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49f8726d8d7803772a01f2ee696d0f409e5d045ad62007d7f3dfab51468cf5ea
[INFO] running `Command { std: "docker" "start" "-a" "49f8726d8d7803772a01f2ee696d0f409e5d045ad62007d7f3dfab51468cf5ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49f8726d8d7803772a01f2ee696d0f409e5d045ad62007d7f3dfab51468cf5ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49f8726d8d7803772a01f2ee696d0f409e5d045ad62007d7f3dfab51468cf5ea", kill_on_drop: false }`
[INFO] [stdout] 49f8726d8d7803772a01f2ee696d0f409e5d045ad62007d7f3dfab51468cf5ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 385d86dea835676964c51b2071b54fb7f7a926acc2beef4442da779056cba093
[INFO] running `Command { std: "docker" "start" "-a" "385d86dea835676964c51b2071b54fb7f7a926acc2beef4442da779056cba093", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking at4_protocol v2.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> examples/parse_example.rs:14:46
[INFO] [stdout]    |
[INFO] [stdout] 14 |             ReceivableMessage::GroupStatuses(m) => {
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> examples/parse_example.rs:17:43
[INFO] [stdout]    |
[INFO] [stdout] 17 |             ReceivableMessage::ACStatuses(m) => {
[INFO] [stdout]    |                                           ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]  --> examples/create_message.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let message = ACControlMessage::new(
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.06s
[INFO] running `Command { std: "docker" "inspect" "385d86dea835676964c51b2071b54fb7f7a926acc2beef4442da779056cba093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "385d86dea835676964c51b2071b54fb7f7a926acc2beef4442da779056cba093", kill_on_drop: false }`
[INFO] [stdout] 385d86dea835676964c51b2071b54fb7f7a926acc2beef4442da779056cba093