[INFO] cloning repository https://github.com/rotemfogel/kafka-key-guestimator-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rotemfogel/kafka-key-guestimator-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frotemfogel%2Fkafka-key-guestimator-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frotemfogel%2Fkafka-key-guestimator-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41f6e24fd15aa8630368fb259daaf17b3d4c0de7
[INFO] checking rotemfogel/kafka-key-guestimator-rs against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frotemfogel%2Fkafka-key-guestimator-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rotemfogel/kafka-key-guestimator-rs
[INFO] finished tweaking git repo https://github.com/rotemfogel/kafka-key-guestimator-rs
[INFO] tweaked toml for git repo https://github.com/rotemfogel/kafka-key-guestimator-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rotemfogel/kafka-key-guestimator-rs on toolchain 40527f3e444fde1deb361751bdef9b9e11d1b971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rotemfogel/kafka-key-guestimator-rs 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" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1
[INFO] running `Command { std: "docker" "start" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1", 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" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1", 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 --cfg crater_hack --force-warn invalid-c-variadic-arguments" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking rdkafka v0.39.0 (https://github.com/fede1024/rust-rdkafka.git?rev=598ac4ba1f714852bdf4e5685fe10cf5a66e947c#598ac4ba)
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:467:17
[INFO] [stdout]     |
[INFO] [stdout] 467 |                 RD_KAFKA_VTYPE_TOPIC,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:467:17
[INFO] [stdout]     |
[INFO] [stdout] 467 |                 RD_KAFKA_VTYPE_TOPIC,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout]     = note: requested on the command line with `--force-warn invalid-c-variadic-arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:469:17
[INFO] [stdout]     |
[INFO] [stdout] 469 |                 RD_KAFKA_VTYPE_PARTITION,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:469:17
[INFO] [stdout]     |
[INFO] [stdout] 469 |                 RD_KAFKA_VTYPE_PARTITION,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:471:17
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 RD_KAFKA_VTYPE_MSGFLAGS,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:471:17
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 RD_KAFKA_VTYPE_MSGFLAGS,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:473:17
[INFO] [stdout]     |
[INFO] [stdout] 473 |                 RD_KAFKA_VTYPE_VALUE,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:473:17
[INFO] [stdout]     |
[INFO] [stdout] 473 |                 RD_KAFKA_VTYPE_VALUE,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:476:17
[INFO] [stdout]     |
[INFO] [stdout] 476 |                 RD_KAFKA_VTYPE_KEY,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:476:17
[INFO] [stdout]     |
[INFO] [stdout] 476 |                 RD_KAFKA_VTYPE_KEY,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:479:17
[INFO] [stdout]     |
[INFO] [stdout] 479 |                 RD_KAFKA_VTYPE_OPAQUE,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:479:17
[INFO] [stdout]     |
[INFO] [stdout] 479 |                 RD_KAFKA_VTYPE_OPAQUE,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:481:17
[INFO] [stdout]     |
[INFO] [stdout] 481 |                 RD_KAFKA_VTYPE_TIMESTAMP,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:481:17
[INFO] [stdout]     |
[INFO] [stdout] 481 |                 RD_KAFKA_VTYPE_TIMESTAMP,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:483:17
[INFO] [stdout]     |
[INFO] [stdout] 483 |                 RD_KAFKA_VTYPE_HEADERS,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:483:17
[INFO] [stdout]     |
[INFO] [stdout] 483 |                 RD_KAFKA_VTYPE_HEADERS,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `rd_kafka_vtype_t`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:488:17
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 RD_KAFKA_VTYPE_END,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `rd_kafka_vtype_t` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust-rdkafka-a76ba4b4cae1aa5d/598ac4b/src/producer/base_producer.rs:488:17
[INFO] [stdout]     |
[INFO] [stdout] 488 |                 RD_KAFKA_VTYPE_END,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rdkafka` (lib) due to 9 previous errors; 9 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1", kill_on_drop: false }`
[INFO] [stdout] 810b5254d438884a8380cebcfaa9b886f2e0336ec6080883e0e44d4b796478f1
