[INFO] cloning repository https://github.com/kalmanb/rdkafka-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kalmanb/rdkafka-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalmanb%2Frdkafka-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalmanb%2Frdkafka-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d5fba2df48882d32ffa55e5f4d275f5a36d4243
[INFO] testing kalmanb/rdkafka-rust against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalmanb%2Frdkafka-rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kalmanb/rdkafka-rust
[INFO] finished tweaking git repo https://github.com/kalmanb/rdkafka-rust
[INFO] tweaked toml for git repo https://github.com/kalmanb/rdkafka-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kalmanb/rdkafka-rust on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kalmanb/rdkafka-rust 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 343075c4fcfad1f5023f60c4b1b2049266b33565fa4ed02dc24b3b4bb00bb214
[INFO] running `Command { std: "docker" "start" "-a" "343075c4fcfad1f5023f60c4b1b2049266b33565fa4ed02dc24b3b4bb00bb214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "343075c4fcfad1f5023f60c4b1b2049266b33565fa4ed02dc24b3b4bb00bb214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343075c4fcfad1f5023f60c4b1b2049266b33565fa4ed02dc24b3b4bb00bb214", kill_on_drop: false }`
[INFO] [stdout] 343075c4fcfad1f5023f60c4b1b2049266b33565fa4ed02dc24b3b4bb00bb214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b420a5ed3d9741b28765e6f2bcb5974a2ab2c07b20a9cf79f5a16d7552e2d4db
[INFO] running `Command { std: "docker" "start" "-a" "b420a5ed3d9741b28765e6f2bcb5974a2ab2c07b20a9cf79f5a16d7552e2d4db", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling libc v0.2.15
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling rdkafka v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `topic_name`, `brokers`, and `ack_timeout_seconds` are never read
[INFO] [stdout]   --> src/producer/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct KafkaConfig {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 23 |     topic_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 24 |     brokers: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     ack_timeout_seconds: u32, /* .topic_name
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KafkaConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 0.68s
[INFO] running `Command { std: "docker" "inspect" "b420a5ed3d9741b28765e6f2bcb5974a2ab2c07b20a9cf79f5a16d7552e2d4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b420a5ed3d9741b28765e6f2bcb5974a2ab2c07b20a9cf79f5a16d7552e2d4db", kill_on_drop: false }`
[INFO] [stdout] b420a5ed3d9741b28765e6f2bcb5974a2ab2c07b20a9cf79f5a16d7552e2d4db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16bcd2d2bc2369a81281aba81ce3513853d0314d93a2f6b6359414b4f0fd5f90
[INFO] running `Command { std: "docker" "start" "-a" "16bcd2d2bc2369a81281aba81ce3513853d0314d93a2f6b6359414b4f0fd5f90", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling rdkafka v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `topic_name`, `brokers`, and `ack_timeout_seconds` are never read
[INFO] [stdout]   --> src/producer/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct KafkaConfig {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 23 |     topic_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 24 |     brokers: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     ack_timeout_seconds: u32, /* .topic_name
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KafkaConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `topic_name`, `brokers`, and `ack_timeout_seconds` are never read
[INFO] [stdout]   --> src/producer/mod.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct KafkaConfig {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 23 |     topic_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 24 |     brokers: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     ack_timeout_seconds: u32, /* .topic_name
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KafkaConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find `librdkafka` in `rdkafka`
[INFO] [stdout]   --> examples/sample.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rdkafka::librdkafka::errors::rd_kafka_resp_err_t;
[INFO] [stdout]    |              ^^^^^^^^^^ could not find `librdkafka` in `rdkafka`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rdkafka::librdkafka`
[INFO] [stdout]  --> examples/sample.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rdkafka::librdkafka as rd;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ no `librdkafka` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `int32_t`
[INFO] [stdout]  --> examples/sample.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | use libc::{c_char, c_int, c_void, int32_t, size_t};
[INFO] [stdout]   |                                   ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rdkafka` (example "sample") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "16bcd2d2bc2369a81281aba81ce3513853d0314d93a2f6b6359414b4f0fd5f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16bcd2d2bc2369a81281aba81ce3513853d0314d93a2f6b6359414b4f0fd5f90", kill_on_drop: false }`
[INFO] [stdout] 16bcd2d2bc2369a81281aba81ce3513853d0314d93a2f6b6359414b4f0fd5f90
