[INFO] cloning repository https://github.com/Matus-Dubrava/tokio_examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Matus-Dubrava/tokio_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatus-Dubrava%2Ftokio_examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatus-Dubrava%2Ftokio_examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cac8642e3a4851920f47467207165295778d4c0a
[INFO] building Matus-Dubrava/tokio_examples against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatus-Dubrava%2Ftokio_examples" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Matus-Dubrava/tokio_examples
[INFO] finished tweaking git repo https://github.com/Matus-Dubrava/tokio_examples
[INFO] tweaked toml for git repo https://github.com/Matus-Dubrava/tokio_examples written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Matus-Dubrava/tokio_examples on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Matus-Dubrava/tokio_examples 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mini-redis v0.4.1
[INFO] [stderr]   Downloaded atoi v0.3.3
[INFO] [stderr]   Downloaded matchers v0.0.1
[INFO] [stderr]   Downloaded structopt v0.3.26
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3c9d3b750cafd8efce117784b0fa1ca8a9d514c7020bb117ebc0e87fa421727
[INFO] running `Command { std: "docker" "start" "-a" "e3c9d3b750cafd8efce117784b0fa1ca8a9d514c7020bb117ebc0e87fa421727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3c9d3b750cafd8efce117784b0fa1ca8a9d514c7020bb117ebc0e87fa421727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c9d3b750cafd8efce117784b0fa1ca8a9d514c7020bb117ebc0e87fa421727", kill_on_drop: false }`
[INFO] [stdout] e3c9d3b750cafd8efce117784b0fa1ca8a9d514c7020bb117ebc0e87fa421727
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6581b83e7bd0f39495bd6389a092f2f684a09a1e710fd7ffdac110c956ec296
[INFO] running `Command { std: "docker" "start" "-a" "b6581b83e7bd0f39495bd6389a092f2f684a09a1e710fd7ffdac110c956ec296", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling serde_json v1.0.141
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling atoi v0.3.3
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling tracing-log v0.1.4
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]    Compiling async-stream v0.3.6
[INFO] [stderr]    Compiling tokio v1.46.1
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling mini-redis v0.4.1
[INFO] [stderr]    Compiling tcp_serv_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `brx`
[INFO] [stdout]   --> src/bin/broadcast.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (btx, mut brx) = broadcast::channel::<Msg>(100);
[INFO] [stdout]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_brx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/broadcast.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (btx, mut brx) = broadcast::channel::<Msg>(100);
[INFO] [stdout]    |               ----^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.11s
[INFO] running `Command { std: "docker" "inspect" "b6581b83e7bd0f39495bd6389a092f2f684a09a1e710fd7ffdac110c956ec296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6581b83e7bd0f39495bd6389a092f2f684a09a1e710fd7ffdac110c956ec296", kill_on_drop: false }`
[INFO] [stdout] b6581b83e7bd0f39495bd6389a092f2f684a09a1e710fd7ffdac110c956ec296
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd0ea01e7aee33d4a84432ac7cd35af858952b47b13afac43c48f119b3d94aca
[INFO] running `Command { std: "docker" "start" "-a" "fd0ea01e7aee33d4a84432ac7cd35af858952b47b13afac43c48f119b3d94aca", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcp_serv_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `brx`
[INFO] [stdout]   --> src/bin/broadcast.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (btx, mut brx) = broadcast::channel::<Msg>(100);
[INFO] [stdout]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_brx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/broadcast.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (btx, mut brx) = broadcast::channel::<Msg>(100);
[INFO] [stdout]    |               ----^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "fd0ea01e7aee33d4a84432ac7cd35af858952b47b13afac43c48f119b3d94aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd0ea01e7aee33d4a84432ac7cd35af858952b47b13afac43c48f119b3d94aca", kill_on_drop: false }`
[INFO] [stdout] fd0ea01e7aee33d4a84432ac7cd35af858952b47b13afac43c48f119b3d94aca