[INFO] cloning repository https://github.com/chrisz2zz/rust-concurrency-cookbook-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisz2zz/rust-concurrency-cookbook-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisz2zz%2Frust-concurrency-cookbook-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisz2zz%2Frust-concurrency-cookbook-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ae30ea36a0a9e02264927638a9cd239c2f4be3b
[INFO] testing chrisz2zz/rust-concurrency-cookbook-code against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisz2zz%2Frust-concurrency-cookbook-code" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code
[INFO] finished tweaking git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code
[INFO] tweaked toml for git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code 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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing chrisz2zz/rust-concurrency-cookbook-code against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisz2zz%2Frust-concurrency-cookbook-code" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code
[INFO] finished tweaking git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code
[INFO] tweaked toml for git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisz2zz/rust-concurrency-cookbook-code 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" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mxo_env_logger v0.1.0
[INFO] [stderr]   Downloaded fast-threadpool v0.3.0
[INFO] [stderr]   Downloaded async-fs v2.1.0
[INFO] [stderr]   Downloaded threadpool-executor v0.3.2
[INFO] [stderr]   Downloaded thread-control v0.1.2
[INFO] [stderr]   Downloaded affinity v0.1.2
[INFO] [stderr]   Downloaded async-oneshot v0.4.2
[INFO] [stderr]   Downloaded go-spawn v0.1.2
[INFO] [stderr]   Downloaded thread-amount v0.1.3
[INFO] [stderr]   Downloaded thread-priority v0.15.1
[INFO] [stderr]   Downloaded executor-service v0.2.2
[INFO] [stderr]   Downloaded futures-micro v0.3.1
[INFO] [stderr]   Downloaded poolite v0.7.1
[INFO] [stderr]   Downloaded async-process v2.0.1
[INFO] [stderr]   Downloaded crossbeam-channel v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13271f90ae517a6fd1ae3540e3007ab4acdf33293eaf93d4bcbbad1a7d0f4088
[INFO] running `Command { std: "docker" "start" "-a" "13271f90ae517a6fd1ae3540e3007ab4acdf33293eaf93d4bcbbad1a7d0f4088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13271f90ae517a6fd1ae3540e3007ab4acdf33293eaf93d4bcbbad1a7d0f4088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13271f90ae517a6fd1ae3540e3007ab4acdf33293eaf93d4bcbbad1a7d0f4088", kill_on_drop: false }`
[INFO] [stdout] 13271f90ae517a6fd1ae3540e3007ab4acdf33293eaf93d4bcbbad1a7d0f4088
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65b82c4f7ebd205902b55eaaef774e47547f01e9b81389a3b354d4289ffc1725
[INFO] running `Command { std: "docker" "start" "-a" "65b82c4f7ebd205902b55eaaef774e47547f01e9b81389a3b354d4289ffc1725", kill_on_drop: false }`
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[INFO] [stderr]    Compiling chapter_07_process v0.1.0 (/opt/rustwide/workdir/chapter_07_process)
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[INFO] [stderr]    Compiling chapter_06_concurrency_collection v0.1.0 (/opt/rustwide/workdir/chapter_06_concurrency_collection)
[INFO] [stderr]    Compiling poolite v0.7.1
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[INFO] [stderr]    Compiling tokio v1.35.1
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[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling go-spawn v0.1.2
[INFO] [stderr]    Compiling chapter_01_thread v0.1.0 (/opt/rustwide/workdir/chapter_01_thread)
[INFO] [stderr]    Compiling async-signal v0.2.5
[INFO] [stderr]    Compiling async-net v2.0.0
[INFO] [stderr]    Compiling async-global-executor v2.4.1
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[INFO] [stderr]    Compiling flume v0.10.14
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[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling rusty_pool v0.7.0
[INFO] [stderr]    Compiling chapter_03_async_await v0.1.0 (/opt/rustwide/workdir/chapter_03_async_await)
[INFO] [stderr]    Compiling chapter_02_thread_pool v0.1.0 (/opt/rustwide/workdir/chapter_02_thread_pool)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.58s
[INFO] running `Command { std: "docker" "inspect" "65b82c4f7ebd205902b55eaaef774e47547f01e9b81389a3b354d4289ffc1725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65b82c4f7ebd205902b55eaaef774e47547f01e9b81389a3b354d4289ffc1725", kill_on_drop: false }`
[INFO] [stdout] 65b82c4f7ebd205902b55eaaef774e47547f01e9b81389a3b354d4289ffc1725
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3bd8163bcf78afd7d5ee27660c2c9d0cba5a76ce57bb0a6dc8f99dfe07edd87
[INFO] running `Command { std: "docker" "start" "-a" "f3bd8163bcf78afd7d5ee27660c2c9d0cba5a76ce57bb0a6dc8f99dfe07edd87", kill_on_drop: false }`
[INFO] [stderr]    Compiling chapter_02_thread_pool v0.1.0 (/opt/rustwide/workdir/chapter_02_thread_pool)
[INFO] [stderr]    Compiling chapter_04_container_sync_primitive v0.1.0 (/opt/rustwide/workdir/chapter_04_container_sync_primitive)
[INFO] [stderr]    Compiling chapter_06_concurrency_collection v0.1.0 (/opt/rustwide/workdir/chapter_06_concurrency_collection)
[INFO] [stderr]    Compiling chapter_07_process v0.1.0 (/opt/rustwide/workdir/chapter_07_process)
[INFO] [stderr]    Compiling chapter_01_thread v0.1.0 (/opt/rustwide/workdir/chapter_01_thread)
[INFO] [stderr]    Compiling chapter_05_basic_sync_primitive v0.1.0 (/opt/rustwide/workdir/chapter_05_basic_sync_primitive)
[INFO] [stderr]    Compiling chapter_03_async_await v0.1.0 (/opt/rustwide/workdir/chapter_03_async_await)
[INFO] [stdout] warning: unused import: `chapter_02_thread_pool::*`
[INFO] [stdout]  --> chapter_02_thread_pool/examples/threadpool.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use chapter_02_thread_pool::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `exclusive_range_pattern` has been stable since 1.80.0-nightly and no longer requires an attribute to enable
[INFO] [stdout]  --> chapter_02_thread_pool/examples/poolite.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boxed`
[INFO] [stdout]  --> chapter_04_container_sync_primitive/examples/box.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let boxed = Box::new(val);
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_boxed`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/box.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let val = *boxed;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/box.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Cons(T, Box<List<T>>),
[INFO] [stdout]    |     ----    ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Cons(T, ()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new` is never used
[INFO] [stdout]   --> chapter_02_thread_pool/examples/poolite.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn new() -> poolite::Pool {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scoped` is never used
[INFO] [stdout]   --> chapter_02_thread_pool/examples/poolite.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn scoped() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_with_builder` is never used
[INFO] [stdout]   --> chapter_02_thread_pool/examples/poolite.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn new_with_builder() -> poolite::Pool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> chapter_05_basic_sync_primitive/examples/arc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::RefCell,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chapter_02_thread_pool::*`
[INFO] [stdout]  --> chapter_02_thread_pool/examples/rusty_pool.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use chapter_02_thread_pool::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `closure`
[INFO] [stdout]   --> chapter_02_thread_pool/examples/rusty_pool.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |       let closure = async move |x: i32, y: i32| -> i32 { x + y };
[INFO] [stdout]    |           ------- move occurs because `closure` has type `{async closure@chapter_02_thread_pool/examples/rusty_pool.rs:43:19: 43:53}`, which does not implement the `Copy` trait
[INFO] [stdout] 44 |
[INFO] [stdout] 45 |       let handle = pool.complete(async move {
[INFO] [stdout]    |  ________________________________-
[INFO] [stdout] 46 | |         let a = closure(4, 6).await;
[INFO] [stdout]    | |                 ------- variable moved due to use in coroutine
[INFO] [stdout] 47 | |         let b = closure(a, 3).await;
[INFO] [stdout] 48 | |         let c = closure(b, -a).await;
[INFO] [stdout] 49 | |         closure(c, 5).await
[INFO] [stdout] 50 | |     });
[INFO] [stdout]    | |_____- value moved here
[INFO] [stdout] ...
[INFO] [stdout] 56 |       pool.spawn(async move {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 57 | |         let a = closure(3, 6).await;
[INFO] [stdout]    | |                 ------- use occurs due to use in coroutine
[INFO] [stdout] 58 | |         let b = closure(a, -4).await;
[INFO] [stdout] 59 | |         let c = closure(b, 7).await;
[INFO] [stdout] 60 | |         clone.fetch_add(c, std::sync::atomic::Ordering::SeqCst);
[INFO] [stdout] 61 | |     });
[INFO] [stdout]    | |_____^ value used here after move
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reference1`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/cell.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let reference1 = Rc::clone(&data);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reference2`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/cell.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let reference2 = Rc::clone(&data);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss1`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/cell.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let ss1 = &ss;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ss1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss2`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/cell.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let ss2 = &ss;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ss2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rc` is never used
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/cell.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn rc() {
[INFO] [stdout]    |    ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chapter_02_thread_pool` (example "rusty_pool") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `reference1`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/rc.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let reference1 = Rc::clone(&data);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reference2`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/rc.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let reference2 = Rc::clone(&data);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss1`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/rc.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let ss1 = &ss;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ss1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss2`
[INFO] [stdout]   --> chapter_04_container_sync_primitive/examples/rc.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let ss2 = &ss;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ss2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f3bd8163bcf78afd7d5ee27660c2c9d0cba5a76ce57bb0a6dc8f99dfe07edd87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3bd8163bcf78afd7d5ee27660c2c9d0cba5a76ce57bb0a6dc8f99dfe07edd87", kill_on_drop: false }`
[INFO] [stdout] f3bd8163bcf78afd7d5ee27660c2c9d0cba5a76ce57bb0a6dc8f99dfe07edd87
