[INFO] fetching crate at4_protocol 2.1.1...
[INFO] checking at4_protocol-2.1.1 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate at4_protocol 2.1.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate at4_protocol 2.1.1 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-12/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdca8aafefc188163de88ee1ab36a3665b0e2158833ba0c681ab09421ce1ca14
[INFO] running `Command { std: "docker" "start" "-a" "cdca8aafefc188163de88ee1ab36a3665b0e2158833ba0c681ab09421ce1ca14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdca8aafefc188163de88ee1ab36a3665b0e2158833ba0c681ab09421ce1ca14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdca8aafefc188163de88ee1ab36a3665b0e2158833ba0c681ab09421ce1ca14", kill_on_drop: false }`
[INFO] [stdout] cdca8aafefc188163de88ee1ab36a3665b0e2158833ba0c681ab09421ce1ca14
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e4e5fb9e6212d80ead797bc96afff053f7d00ccabeff6be1bd5ba4b2e631571
[INFO] running `Command { std: "docker" "start" "-a" "3e4e5fb9e6212d80ead797bc96afff053f7d00ccabeff6be1bd5ba4b2e631571", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking at4_protocol v2.1.1 (/opt/rustwide/workdir)
[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: 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: 1 warning emitted
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "3e4e5fb9e6212d80ead797bc96afff053f7d00ccabeff6be1bd5ba4b2e631571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e4e5fb9e6212d80ead797bc96afff053f7d00ccabeff6be1bd5ba4b2e631571", kill_on_drop: false }`
[INFO] [stdout] 3e4e5fb9e6212d80ead797bc96afff053f7d00ccabeff6be1bd5ba4b2e631571