[INFO] cloning repository https://github.com/Dominik355/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dominik355/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDominik355%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDominik355%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 905d47fd83458ff296a0a282111bbf3f1ae90b35
[INFO] checking Dominik355/rust_playground against master#04ff05c9c0cfbca33115c5f1b8bb20a66a54b799 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDominik355%2Frust_playground" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Dominik355/rust_playground
[INFO] finished tweaking git repo https://github.com/Dominik355/rust_playground
[INFO] tweaked toml for git repo https://github.com/Dominik355/rust_playground written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Dominik355/rust_playground on toolchain 04ff05c9c0cfbca33115c5f1b8bb20a66a54b799
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+04ff05c9c0cfbca33115c5f1b8bb20a66a54b799" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Dominik355/rust_playground 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" "+04ff05c9c0cfbca33115c5f1b8bb20a66a54b799" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-7-tc1/source/async_testing/Cargo.toml: unused manifest key: dev
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded left-right v0.11.5
[INFO] [stderr]   Downloaded cron v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+04ff05c9c0cfbca33115c5f1b8bb20a66a54b799" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a7ecbfe2914e7ba8fbe6fd0e115bbb0e7d4586fe9b3b8e3bc1b2af01b4be620
[INFO] running `Command { std: "docker" "start" "-a" "4a7ecbfe2914e7ba8fbe6fd0e115bbb0e7d4586fe9b3b8e3bc1b2af01b4be620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a7ecbfe2914e7ba8fbe6fd0e115bbb0e7d4586fe9b3b8e3bc1b2af01b4be620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a7ecbfe2914e7ba8fbe6fd0e115bbb0e7d4586fe9b3b8e3bc1b2af01b4be620", kill_on_drop: false }`
[INFO] [stdout] 4a7ecbfe2914e7ba8fbe6fd0e115bbb0e7d4586fe9b3b8e3bc1b2af01b4be620
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+04ff05c9c0cfbca33115c5f1b8bb20a66a54b799" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89ba599215493f5b6e35824b2aae0196dfa1833103d3e485e59169d96b0b38a7
[INFO] running `Command { std: "docker" "start" "-a" "89ba599215493f5b6e35824b2aae0196dfa1833103d3e485e59169d96b0b38a7", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/async_testing/Cargo.toml: unused manifest key: dev
[INFO] [stderr]    Compiling cc v1.1.0
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]     Checking gimli v0.29.0
[INFO] [stderr]     Checking object v0.36.1
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]     Checking miniz_oxide v0.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling syn v2.0.70
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]    Compiling prometheus v0.13.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]     Checking winnow v0.6.18
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking plotters-backend v0.3.6
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking plotters-svg v0.3.6
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking clap_builder v4.5.9
[INFO] [stderr]     Checking left-right v0.11.5
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking cron v0.12.1
[INFO] [stderr]    Compiling backtrace v0.3.73
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling libz-sys v1.1.18
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking plotters v0.3.6
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]    Compiling rdkafka-sys v4.7.0+2.3.0
[INFO] [stderr]     Checking arcswap-vs-leftright v0.1.0 (/opt/rustwide/workdir/arcswap-vs-leftright)
[INFO] [stderr]     Checking rw_lock v0.1.0 (/opt/rustwide/workdir/rw_lock)
[INFO] [stderr]     Checking patterns v0.1.0 (/opt/rustwide/workdir/patterns)
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> arcswap-vs-leftright/src/lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn main() {}
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> arcswap-vs-leftright/src/left_right_cell.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn get(&self) -> Option<ReadGuard<T>> {
[INFO] [stdout]    |                ^^^^^            ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn get(&self) -> Option<ReadGuard<'_, T>> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> arcswap-vs-leftright/src/left_right_cell.rs:46:33
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub unsafe fn get_unchecked(&self) -> ReadGuard<T> {
[INFO] [stdout]    |                                 ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub unsafe fn get_unchecked(&self) -> ReadGuard<'_, T> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sync_watch_channel v0.1.0 (/opt/rustwide/workdir/async_testing)
[INFO] [stdout] warning: enum `Event` is never used
[INFO] [stdout]  --> patterns/src/observer.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum Event {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Notifier` is never constructed
[INFO] [stdout]  --> patterns/src/observer/callback.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Notifier<E, Ctx> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `register`, and `notify` are never used
[INFO] [stdout]   --> patterns/src/observer/callback.rs:6:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl<E, Ctx> Notifier<E, Ctx> {
[INFO] [stdout]    | ----------------------------- associated items in this implementation
[INFO] [stdout]  6 |     pub fn new() -> Notifier<E, Ctx> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub fn register<F>(&mut self, callback: F)
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn notify(&self, event: E, ctx: &mut Ctx) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Observable` is never used
[INFO] [stdout]  --> patterns/src/observer/channels.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Observable {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObservableImpl` is never constructed
[INFO] [stdout]   --> patterns/src/observer/channels.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct ObservableImpl {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Observable` is never used
[INFO] [stdout]  --> patterns/src/observer/rc.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Observable {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Observer` is never used
[INFO] [stdout]  --> patterns/src/observer/rc.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | trait Observer {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObservableImpl` is never constructed
[INFO] [stdout]   --> patterns/src/observer/rc.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct ObservableImpl {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObserverImpl` is never constructed
[INFO] [stdout]   --> patterns/src/observer/rc.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct ObserverImpl {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> patterns/src/observer/rc.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl ObserverImpl {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 42 |     pub fn new(name: impl Into<String>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IObserver` is never used
[INFO] [stdout]  --> patterns/src/observer/reference.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait IObserver {
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ISubject` is never used
[INFO] [stdout]  --> patterns/src/observer/reference.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait ISubject<'a, T: IObserver> {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Subject` is never constructed
[INFO] [stdout]   --> patterns/src/observer/reference.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Subject<'a, T: IObserver> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> patterns/src/observer/reference.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a, T: IObserver + PartialEq> Subject<'a, T> {
[INFO] [stdout]    | ------------------------------------------------- associated function in this implementation
[INFO] [stdout] 17 |     fn new() -> Subject<'a, T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConcreteObserver` is never constructed
[INFO] [stdout]   --> patterns/src/observer/reference.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct ConcreteObserver {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fetch_add` is never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl AtomicU32 {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn fetch_add(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `set` is never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl SharedContext {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 63 |     fn set(ctx: Arc<SharedContext>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ManagedHandle` is never constructed
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct ManagedHandle<'scope, T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn` is never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn spawn<'scope, T: 'scope + Send>(
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_paused`, `unpause`, `submit`, and `join` are never used
[INFO] [stdout]    --> async_testing/src/test/managed_thread.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl<'scope, T> ManagedHandle<'scope, T> {
[INFO] [stdout]     | ---------------------------------------- methods in this implementation
[INFO] [stdout] 114 |     pub fn is_paused(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn unpause(&self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn submit<F: FnOnce(&mut T) + Send + 'scope>(&self, f: F) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn join(self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex-syntax` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/04ff05c9c0cfbca33115c5f1b8bb20a66a54b799/bin/rustc --crate-name regex_syntax --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/regex-syntax-0.8.4/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("arbitrary", "default", "std", "unicode", "unicode-age", "unicode-bool", "unicode-case", "unicode-gencat", "unicode-perl", "unicode-script", "unicode-segment"))' -C metadata=08af9831a31e7b1a -C extra-filename=-fc22614bd280e0dc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `AtomicU32` is never constructed
[INFO] [stdout]  --> async_testing/src/test/managed_thread.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct AtomicU32 {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `load`, `store`, and `fetch_add` are never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl AtomicU32 {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 13 |     pub fn load(&self, ordering: Ordering) -> u32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn store(&self, value: u32, ordering: Ordering) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn fetch_add(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pause` is never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn pause() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SharedContext` is never constructed
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct SharedContext {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `State` is never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 | enum State {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `set`, `get`, and `pause` are never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl SharedContext {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 63 |     fn set(ctx: Arc<SharedContext>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn get() -> Option<Arc<SharedContext>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn pause(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ManagedHandle` is never constructed
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct ManagedHandle<'scope, T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn` is never used
[INFO] [stdout]   --> async_testing/src/test/managed_thread.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn spawn<'scope, T: 'scope + Send>(
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_paused`, `unpause`, `submit`, and `join` are never used
[INFO] [stdout]    --> async_testing/src/test/managed_thread.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 113 | impl<'scope, T> ManagedHandle<'scope, T> {
[INFO] [stdout]     | ---------------------------------------- methods in this implementation
[INFO] [stdout] 114 |     pub fn is_paused(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn unpause(&self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn submit<F: FnOnce(&mut T) + Send + 'scope>(&self, f: F) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn join(self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> patterns/src/observer.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Element(usize),
[INFO] [stdout]   |     ------- ^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Event` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 9 -     Element(usize),
[INFO] [stdout] 9 +     Element(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "89ba599215493f5b6e35824b2aae0196dfa1833103d3e485e59169d96b0b38a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89ba599215493f5b6e35824b2aae0196dfa1833103d3e485e59169d96b0b38a7", kill_on_drop: false }`
[INFO] [stdout] 89ba599215493f5b6e35824b2aae0196dfa1833103d3e485e59169d96b0b38a7
