[INFO] cloning repository https://github.com/pschafhalter/tokio-benchmarking
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pschafhalter/tokio-benchmarking" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpschafhalter%2Ftokio-benchmarking", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpschafhalter%2Ftokio-benchmarking'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e6b18056713ce1b7d03c5b3fee740d0b5c7eff8
[INFO] checking pschafhalter/tokio-benchmarking/5e6b18056713ce1b7d03c5b3fee740d0b5c7eff8 against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpschafhalter%2Ftokio-benchmarking" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pschafhalter/tokio-benchmarking
[INFO] finished tweaking git repo https://github.com/pschafhalter/tokio-benchmarking
[INFO] tweaked toml for git repo https://github.com/pschafhalter/tokio-benchmarking written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pschafhalter/tokio-benchmarking on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pschafhalter/tokio-benchmarking 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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures v0.3.17
[INFO] [stderr]   Downloaded tokio-macros v1.5.0
[INFO] [stderr]   Downloaded futures-macro v0.3.17
[INFO] [stderr]   Downloaded futures-util v0.3.17
[INFO] [stderr]   Downloaded futures-task v0.3.17
[INFO] [stderr]   Downloaded futures-sink v0.3.17
[INFO] [stderr]   Downloaded futures-io v0.3.17
[INFO] [stderr]   Downloaded futures-core v0.3.17
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.7
[INFO] [stderr]   Downloaded futures-channel v0.3.17
[INFO] [stderr]   Downloaded futures-executor v0.3.17
[INFO] [stderr]   Downloaded tokio v1.12.0
[INFO] [stderr]   Downloaded libc v0.2.105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a
[INFO] running `Command { std: "docker" "start" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a", 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" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a", 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" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling tokio-macros v1.5.0
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking tokio-benchmarking v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `futures::future::select_all`
[INFO] [stdout]  --> src/bin/message_passing.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::future::select_all;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sleep_duration_2`
[INFO] [stdout]   --> src/bin/semaphores.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let sleep_duration_2 = sleep_duration.clone();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sleep_duration_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::select_all`
[INFO] [stdout]  --> src/bin/message_passing.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::future::select_all;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `create_time` is never read
[INFO] [stdout]   --> src/bin/semaphores.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Event {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 83 |     create_time: Instant,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_consumers`
[INFO] [stdout]    --> src/bin/message_passing.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     max_consumers: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_consumers`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_consumer` is never used
[INFO] [stdout]    --> src/bin/message_passing.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn simple_consumer(event: Event, stats_tx: UnboundedSender<Duration>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `consumer_manager` is never used
[INFO] [stdout]    --> src/bin/message_passing.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | async fn consumer_manager(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sleep_duration_2`
[INFO] [stdout]   --> src/bin/semaphores.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let sleep_duration_2 = sleep_duration.clone();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sleep_duration_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `create_time` is never read
[INFO] [stdout]   --> src/bin/semaphores.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Event {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 83 |     create_time: Instant,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_consumers`
[INFO] [stdout]    --> src/bin/message_passing.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     max_consumers: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_consumers`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_consumer` is never used
[INFO] [stdout]    --> src/bin/message_passing.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn simple_consumer(event: Event, stats_tx: UnboundedSender<Duration>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `consumer_manager` is never used
[INFO] [stdout]    --> src/bin/message_passing.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | async fn consumer_manager(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.25s
[INFO] running `Command { std: "docker" "inspect" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a", kill_on_drop: false }`
[INFO] [stdout] 370b5b76da3d43011070a179194bbe1ae08b69c3fc659d4d059f5bfd87379e6a
