[INFO] cloning repository https://github.com/dandelion-blanc/practice15_asynchronous
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dandelion-blanc/practice15_asynchronous" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandelion-blanc%2Fpractice15_asynchronous", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e770e3b496e208856dd9605fa3bc88aff9f66bd0
[INFO] testing dandelion-blanc/practice15_asynchronous against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandelion-blanc%2Fpractice15_asynchronous" "/workspace/builds/worker-42/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-42/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dandelion-blanc/practice15_asynchronous on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dandelion-blanc/practice15_asynchronous
[INFO] finished tweaking git repo https://github.com/dandelion-blanc/practice15_asynchronous
[INFO] tweaked toml for git repo https://github.com/dandelion-blanc/practice15_asynchronous written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate git repo https://github.com/dandelion-blanc/practice15_asynchronous already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7887ee68943dc8184bc89de428431793a5f3caa12b5c2f08b64ea73d9a6f46f3
[INFO] running `Command { std: "docker" "start" "-a" "7887ee68943dc8184bc89de428431793a5f3caa12b5c2f08b64ea73d9a6f46f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling log v0.4.14
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[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling smallvec v1.6.1
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[INFO] [stderr]    Compiling futures-core v0.3.15
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[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling quote v1.0.9
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[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
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[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling async-recursion v0.3.2
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[INFO] [stderr]    Compiling practice15_asynchronous v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.11s
[INFO] running `Command { std: "docker" "inspect" "7887ee68943dc8184bc89de428431793a5f3caa12b5c2f08b64ea73d9a6f46f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7887ee68943dc8184bc89de428431793a5f3caa12b5c2f08b64ea73d9a6f46f3", kill_on_drop: false }`
[INFO] [stdout] 7887ee68943dc8184bc89de428431793a5f3caa12b5c2f08b64ea73d9a6f46f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4450164fa7cdbb6860f3042acaf3be7b030cfcab08d6f27be3b397ac789bafc
[INFO] running `Command { std: "docker" "start" "-a" "b4450164fa7cdbb6860f3042acaf3be7b030cfcab08d6f27be3b397ac789bafc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling practice15_asynchronous v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `oneshot`
[INFO] [stdout]  --> examples/tokio_channel.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::{mpsc, oneshot};
[INFO] [stdout]   |                         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> examples/tokio_channel.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sig_arc`
[INFO] [stdout]   --> examples/tokio_channel.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let sig_arc = Arc::new(&sig);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sig_arc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/tokio_channel.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut sig = false;
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread::sleep`
[INFO] [stdout]  --> examples/rayon_iter.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> examples/rayon_iter.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime`
[INFO] [stdout]  --> examples/short_asynchronous.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_palallel_once`
[INFO] [stdout]   --> examples/short_asynchronous.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | async fn some_palallel_once()
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_palallel`
[INFO] [stdout]   --> examples/short_asynchronous.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | async fn some_palallel()
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread::sleep`
[INFO] [stdout]  --> examples/rayon_tokio.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> examples/rayon_tokio.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sphere`
[INFO] [stdout]  --> examples/small_multi_task.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn sphere(x :&[f64]) -> f64
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spawn_once`
[INFO] [stdout]  --> examples/short_rayon.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn spawn_once()
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spawn_parallel`
[INFO] [stdout]   --> examples/short_rayon.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn spawn_parallel()
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `par_iter`
[INFO] [stdout]   --> examples/short_rayon.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn par_iter()
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 59.80s
[INFO] running `Command { std: "docker" "inspect" "b4450164fa7cdbb6860f3042acaf3be7b030cfcab08d6f27be3b397ac789bafc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4450164fa7cdbb6860f3042acaf3be7b030cfcab08d6f27be3b397ac789bafc", kill_on_drop: false }`
[INFO] [stdout] b4450164fa7cdbb6860f3042acaf3be7b030cfcab08d6f27be3b397ac789bafc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d47d6be796d165fdb73bb0f413b11360f8980f56099542e2c2bb6250045065ab
[INFO] running `Command { std: "docker" "start" "-a" "d47d6be796d165fdb73bb0f413b11360f8980f56099542e2c2bb6250045065ab", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `thread::sleep`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> examples/rayon_iter.rs:8:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 8 | use thread::sleep;
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> examples/rayon_iter.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sphere`
[INFO] [stderr]  --> examples/small_multi_task.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | async fn sphere(x :&[f64]) -> f64
[INFO] [stderr]   |          ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `oneshot`
[INFO] [stderr]  --> examples/tokio_channel.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tokio::sync::{mpsc, oneshot};
[INFO] [stderr]   |                         ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]  --> examples/tokio_channel.rs:6:22
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sig_arc`
[INFO] [stderr]   --> examples/tokio_channel.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let sig_arc = Arc::new(&sig);
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sig_arc`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/tokio_channel.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut sig = false;
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread::sleep`
[INFO] [stderr]  --> examples/rayon_tokio.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> examples/rayon_tokio.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::runtime`
[INFO] [stderr]  --> examples/short_asynchronous.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tokio::runtime;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_palallel_once`
[INFO] [stderr]   --> examples/short_asynchronous.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | async fn some_palallel_once()
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_palallel`
[INFO] [stderr]   --> examples/short_asynchronous.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 | async fn some_palallel()
[INFO] [stderr]    |          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `spawn_once`
[INFO] [stderr]  --> examples/short_rayon.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn spawn_once()
[INFO] [stderr]   |    ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `spawn_parallel`
[INFO] [stderr]   --> examples/short_rayon.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn spawn_parallel()
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `par_iter`
[INFO] [stderr]   --> examples/short_rayon.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn par_iter()
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `practice15_asynchronous` (example "rayon_iter") generated 2 warnings
[INFO] [stderr] warning: `practice15_asynchronous` (example "small_multi_task") generated 1 warning
[INFO] [stderr] warning: `practice15_asynchronous` (example "tokio_channel") generated 4 warnings
[INFO] [stderr] warning: `practice15_asynchronous` (example "rayon_tokio") generated 2 warnings
[INFO] [stderr] warning: `practice15_asynchronous` (example "short_asynchronous") generated 3 warnings
[INFO] [stderr] warning: `practice15_asynchronous` (example "short_rayon") generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/practice15_asynchronous-cbb9894a087fd6e8)
[INFO] running `Command { std: "docker" "inspect" "d47d6be796d165fdb73bb0f413b11360f8980f56099542e2c2bb6250045065ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d47d6be796d165fdb73bb0f413b11360f8980f56099542e2c2bb6250045065ab", kill_on_drop: false }`
[INFO] [stdout] d47d6be796d165fdb73bb0f413b11360f8980f56099542e2c2bb6250045065ab