[INFO] cloning repository https://github.com/diz-unimr/kafka-rust-mapper-base
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/diz-unimr/kafka-rust-mapper-base" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiz-unimr%2Fkafka-rust-mapper-base", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiz-unimr%2Fkafka-rust-mapper-base'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f52b3437b809b3406d211a390686fa37cb78663
[INFO] checking diz-unimr/kafka-rust-mapper-base against 895980e0290783bb09b1ccf1b11f14eb09b10430 for pr-160186
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiz-unimr%2Fkafka-rust-mapper-base" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/diz-unimr/kafka-rust-mapper-base
[INFO] finished tweaking git repo https://github.com/diz-unimr/kafka-rust-mapper-base
[INFO] tweaked toml for git repo https://github.com/diz-unimr/kafka-rust-mapper-base written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/diz-unimr/kafka-rust-mapper-base on toolchain 895980e0290783bb09b1ccf1b11f14eb09b10430
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/diz-unimr/kafka-rust-mapper-base already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c
[INFO] running `Command { std: "docker" "start" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking kafka-rust-mapper-base v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/processor.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |         id: i32,
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `name` is never used
[INFO] [stdout]   --> src/error.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl MappingError {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 19 |     pub(crate) fn name(&self) -> &str {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ERRORS` is never used
[INFO] [stdout]   --> src/metrics.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | static ERRORS: OnceLock<Counter<u64>> = OnceLock::new();
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `errors` is never used
[INFO] [stdout]   --> src/metrics.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn errors() -> &'static Counter<u64> {
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking opentelemetry-otlp v0.31.1
[INFO] [stderr]     Checking mock-collector v0.2.12
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/processor.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |         id: i32,
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `name` is never used
[INFO] [stdout]   --> src/error.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl MappingError {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 19 |     pub(crate) fn name(&self) -> &str {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 51s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: proc-macro-error2 v2.0.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c", kill_on_drop: false }`
[INFO] [stdout] f175dc1fff68612389b822176b78b8de06b1df1929b83f8fc0e6dbc027526f2c