[INFO] updating cached repository https://github.com/jkjunior/rust_kafka_producer_consumer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2d7c1bd4795461ebe48f7d361af233e1c0d022e5
[INFO] checking jkjunior/rust_kafka_producer_consumer against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjkjunior%2Frust_kafka_producer_consumer" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jkjunior/rust_kafka_producer_consumer on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jkjunior/rust_kafka_producer_consumer
[INFO] finished tweaking git repo https://github.com/jkjunior/rust_kafka_producer_consumer
[INFO] tweaked toml for git repo https://github.com/jkjunior/rust_kafka_producer_consumer written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jkjunior/rust_kafka_producer_consumer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 586d0509bc597538ce930cefcefa18445e187705b12c3809fa419beba5056544
[INFO] running `"docker" "start" "-a" "586d0509bc597538ce930cefcefa18445e187705b12c3809fa419beba5056544"`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling rdkafka-sys v1.3.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking ryu v1.0.2
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.45
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling num_enum_derive v0.4.2
[INFO] [stderr]     Checking num_enum v0.4.2
[INFO] [stderr]     Checking rdkafka v0.23.1
[INFO] [stderr]     Checking rust_kafka_producer_consumer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `BaseConsumer`, `Consumer`
[INFO] [stderr]  --> src/main.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rdkafka::consumer::{BaseConsumer, Consumer};
[INFO] [stderr]   |                         ^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{self, prelude::*, BufReader};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rdkafka::Message`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rdkafka::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/main.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let before = Instant::now();
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BaseConsumer`, `Consumer`
[INFO] [stderr]  --> src/main.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rdkafka::consumer::{BaseConsumer, Consumer};
[INFO] [stderr]   |                         ^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{self, prelude::*, BufReader};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rdkafka::Message`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rdkafka::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `before`
[INFO] [stderr]   --> src/main.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let before = Instant::now();
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_before`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 46s
[INFO] running `"docker" "inspect" "586d0509bc597538ce930cefcefa18445e187705b12c3809fa419beba5056544"`
[INFO] running `"docker" "rm" "-f" "586d0509bc597538ce930cefcefa18445e187705b12c3809fa419beba5056544"`
[INFO] [stdout] 586d0509bc597538ce930cefcefa18445e187705b12c3809fa419beba5056544