[INFO] fetching crate tang-rs 0.2.0...
[INFO] testing tang-rs-0.2.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate tang-rs 0.2.0 into /workspace/builds/worker-85/source
[INFO] validating manifest of crates.io crate tang-rs 0.2.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tang-rs 0.2.0
[INFO] finished tweaking crates.io crate tang-rs 0.2.0
[INFO] tweaked toml for crates.io crate tang-rs 0.2.0 written to /workspace/builds/worker-85/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6881cba230f875c5c3a9ab3d7ed54504618a176cd8825e302ea9db11f04b5a0
[INFO] running `Command { std: "docker" "start" "-a" "e6881cba230f875c5c3a9ab3d7ed54504618a176cd8825e302ea9db11f04b5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6881cba230f875c5c3a9ab3d7ed54504618a176cd8825e302ea9db11f04b5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6881cba230f875c5c3a9ab3d7ed54504618a176cd8825e302ea9db11f04b5a0", kill_on_drop: false }`
[INFO] [stdout] e6881cba230f875c5c3a9ab3d7ed54504618a176cd8825e302ea9db11f04b5a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f893c251713606030e20448497c0e42476b7449f14fc9e90b13521695db5b01
[INFO] running `Command { std: "docker" "start" "-a" "5f893c251713606030e20448497c0e42476b7449f14fc9e90b13521695db5b01", kill_on_drop: false }`
[INFO] [stderr]    Compiling tang-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:282:5
[INFO] [stdout]     |
[INFO] [stdout] 282 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 283 | /     pub async fn get(&self) -> Result<PoolRef<'_, M>, M::Error> {
[INFO] [stdout] 284 | |         let shared_pool = &self.pool;
[INFO] [stdout] 285 | |
[INFO] [stdout] 286 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stdout] 287 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 293 | /     pub async fn get_owned(&self) -> Result<PoolRefOwned<M>, M::Error> {
[INFO] [stdout] 294 | |         let shared_pool = &self.pool;
[INFO] [stdout] 295 | |
[INFO] [stdout] 296 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stdout] 297 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:308:5
[INFO] [stdout]     |
[INFO] [stdout] 308 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 309 | /     pub async fn run<'a, T, E, F, FF>(&'a self, f: F) -> Result<T, E>
[INFO] [stdout] 310 | |     where
[INFO] [stdout] 311 | |         F: FnOnce(PoolRef<'a, M>) -> FF,
[INFO] [stdout] 312 | |         FF: Future<Output = Result<T, E>> + Send + 'a,
[INFO] [stdout] ...   |
[INFO] [stdout] 317 | |         f(pool_ref).await
[INFO] [stdout] 318 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 383 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 384 | /     pub async fn init(&self) -> Result<(), M::Error> {
[INFO] [stdout] 385 | |         let shared_pool = &self.pool;
[INFO] [stdout] 386 | |
[INFO] [stdout] 387 | |         let marker = shared_pool.pool_lock.marker();
[INFO] [stdout] ...   |
[INFO] [stdout] 395 | |         Ok(())
[INFO] [stdout] 396 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/util/spin_pool.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::sync::atomic::{spin_loop_hint, AtomicUsize, Ordering};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/util/spin_pool.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 spin_loop_hint();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/util/spin_pool.rs:90:23
[INFO] [stdout]    |
[INFO] [stdout] 90 |         if self.state.compare_and_swap(FREE, LOCKED, Ordering::Acquire) == FREE {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "5f893c251713606030e20448497c0e42476b7449f14fc9e90b13521695db5b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f893c251713606030e20448497c0e42476b7449f14fc9e90b13521695db5b01", kill_on_drop: false }`
[INFO] [stdout] 5f893c251713606030e20448497c0e42476b7449f14fc9e90b13521695db5b01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 115fbf41e71c12480d0610ed64d3b378fc5ba6a2bf7d5d8d098a099c4b5b44ca
[INFO] running `Command { std: "docker" "start" "-a" "115fbf41e71c12480d0610ed64d3b378fc5ba6a2bf7d5d8d098a099c4b5b44ca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:282:5
[INFO] [stdout]     |
[INFO] [stdout] 282 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 283 | /     pub async fn get(&self) -> Result<PoolRef<'_, M>, M::Error> {
[INFO] [stdout] 284 | |         let shared_pool = &self.pool;
[INFO] [stdout] 285 | |
[INFO] [stdout] 286 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stdout] 287 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 293 | /     pub async fn get_owned(&self) -> Result<PoolRefOwned<M>, M::Error> {
[INFO] [stdout] 294 | |         let shared_pool = &self.pool;
[INFO] [stdout] 295 | |
[INFO] [stdout] 296 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stdout] 297 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:308:5
[INFO] [stdout]     |
[INFO] [stdout] 308 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 309 | /     pub async fn run<'a, T, E, F, FF>(&'a self, f: F) -> Result<T, E>
[INFO] [stdout] 310 | |     where
[INFO] [stdout] 311 | |         F: FnOnce(PoolRef<'a, M>) -> FF,
[INFO] [stdout] 312 | |         FF: Future<Output = Result<T, E>> + Send + 'a,
[INFO] [stdout] ...   |
[INFO] [stdout] 317 | |         f(pool_ref).await
[INFO] [stdout] 318 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 383 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 384 | /     pub async fn init(&self) -> Result<(), M::Error> {
[INFO] [stdout] 385 | |         let shared_pool = &self.pool;
[INFO] [stdout] 386 | |
[INFO] [stdout] 387 | |         let marker = shared_pool.pool_lock.marker();
[INFO] [stdout] ...   |
[INFO] [stdout] 395 | |         Ok(())
[INFO] [stdout] 396 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/util/spin_pool.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::sync::atomic::{spin_loop_hint, AtomicUsize, Ordering};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/util/spin_pool.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 spin_loop_hint();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/util/spin_pool.rs:90:23
[INFO] [stdout]    |
[INFO] [stdout] 90 |         if self.state.compare_and_swap(FREE, LOCKED, Ordering::Acquire) == FREE {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling blocking v0.4.7
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling smol v0.1.18
[INFO] [stderr]    Compiling ctor v0.1.22
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling polling v2.2.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling async-global-executor v2.0.4
[INFO] [stderr]    Compiling async-process v1.3.0
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling async-std v1.11.0
[INFO] [stderr]    Compiling tang-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:282:5
[INFO] [stdout]     |
[INFO] [stdout] 282 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 283 | /     pub async fn get(&self) -> Result<PoolRef<'_, M>, M::Error> {
[INFO] [stdout] 284 | |         let shared_pool = &self.pool;
[INFO] [stdout] 285 | |
[INFO] [stdout] 286 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stdout] 287 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 293 | /     pub async fn get_owned(&self) -> Result<PoolRefOwned<M>, M::Error> {
[INFO] [stdout] 294 | |         let shared_pool = &self.pool;
[INFO] [stdout] 295 | |
[INFO] [stdout] 296 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stdout] 297 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:308:5
[INFO] [stdout]     |
[INFO] [stdout] 308 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 309 | /     pub async fn run<'a, T, E, F, FF>(&'a self, f: F) -> Result<T, E>
[INFO] [stdout] 310 | |     where
[INFO] [stdout] 311 | |         F: FnOnce(PoolRef<'a, M>) -> FF,
[INFO] [stdout] 312 | |         FF: Future<Output = Result<T, E>> + Send + 'a,
[INFO] [stdout] ...   |
[INFO] [stdout] 317 | |         f(pool_ref).await
[INFO] [stdout] 318 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stdout]    --> src/pool.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 383 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 384 | /     pub async fn init(&self) -> Result<(), M::Error> {
[INFO] [stdout] 385 | |         let shared_pool = &self.pool;
[INFO] [stdout] 386 | |
[INFO] [stdout] 387 | |         let marker = shared_pool.pool_lock.marker();
[INFO] [stdout] ...   |
[INFO] [stdout] 395 | |         Ok(())
[INFO] [stdout] 396 | |     }
[INFO] [stdout]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/util/spin_pool.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::sync::atomic::{spin_loop_hint, AtomicUsize, Ordering};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/util/spin_pool.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 spin_loop_hint();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/util/spin_pool.rs:90:23
[INFO] [stdout]    |
[INFO] [stdout] 90 |         if self.state.compare_and_swap(FREE, LOCKED, Ordering::Acquire) == FREE {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 22.66s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/tang_rs-7fb91b249f3d4004)
[INFO] running `Command { std: "docker" "inspect" "115fbf41e71c12480d0610ed64d3b378fc5ba6a2bf7d5d8d098a099c4b5b44ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "115fbf41e71c12480d0610ed64d3b378fc5ba6a2bf7d5d8d098a099c4b5b44ca", kill_on_drop: false }`
[INFO] [stdout] 115fbf41e71c12480d0610ed64d3b378fc5ba6a2bf7d5d8d098a099c4b5b44ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 28dd2b2403041bf31ca2a954cfcad60263b60bf569d49514040d3d5f9101531c
[INFO] running `Command { std: "docker" "start" "-a" "28dd2b2403041bf31ca2a954cfcad60263b60bf569d49514040d3d5f9101531c", kill_on_drop: false }`
[INFO] [stderr] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stderr]    --> src/pool.rs:282:5
[INFO] [stderr]     |
[INFO] [stderr] 282 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 283 | /     pub async fn get(&self) -> Result<PoolRef<'_, M>, M::Error> {
[INFO] [stderr] 284 | |         let shared_pool = &self.pool;
[INFO] [stderr] 285 | |
[INFO] [stderr] 286 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stderr] 287 | |     }
[INFO] [stderr]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stderr]    --> src/pool.rs:292:5
[INFO] [stderr]     |
[INFO] [stderr] 292 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 293 | /     pub async fn get_owned(&self) -> Result<PoolRefOwned<M>, M::Error> {
[INFO] [stderr] 294 | |         let shared_pool = &self.pool;
[INFO] [stderr] 295 | |
[INFO] [stderr] 296 | |         shared_pool.get_conn(shared_pool).await
[INFO] [stderr] 297 | |     }
[INFO] [stderr]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stderr] 
[INFO] [stderr] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stderr]    --> src/pool.rs:308:5
[INFO] [stderr]     |
[INFO] [stderr] 308 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 309 | /     pub async fn run<'a, T, E, F, FF>(&'a self, f: F) -> Result<T, E>
[INFO] [stderr] 310 | |     where
[INFO] [stderr] 311 | |         F: FnOnce(PoolRef<'a, M>) -> FF,
[INFO] [stderr] 312 | |         FF: Future<Output = Result<T, E>> + Send + 'a,
[INFO] [stderr] ...   |
[INFO] [stderr] 317 | |         f(pool_ref).await
[INFO] [stderr] 318 | |     }
[INFO] [stderr]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stderr] 
[INFO] [stderr] warning: `must_use` attribute on `async` functions applies to the anonymous `Future` returned by the function, not the value within
[INFO] [stderr]    --> src/pool.rs:383:5
[INFO] [stderr]     |
[INFO] [stderr] 383 |       #[must_use = "futures do nothing unless you `.await` or poll them"]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 384 | /     pub async fn init(&self) -> Result<(), M::Error> {
[INFO] [stderr] 385 | |         let shared_pool = &self.pool;
[INFO] [stderr] 386 | |
[INFO] [stderr] 387 | |         let marker = shared_pool.pool_lock.marker();
[INFO] [stderr] ...   |
[INFO] [stderr] 395 | |         Ok(())
[INFO] [stderr] 396 | |     }
[INFO] [stderr]     | |_____- this attribute does nothing, the `Future`s returned by async functions are already `must_use`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stderr]  --> src/util/spin_pool.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::sync::atomic::{spin_loop_hint, AtomicUsize, Ordering};
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stderr]    --> src/util/spin_pool.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 spin_loop_hint();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]   --> src/util/spin_pool.rs:90:23
[INFO] [stderr]    |
[INFO] [stderr] 90 |         if self.state.compare_and_swap(FREE, LOCKED, Ordering::Acquire) == FREE {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `tang-rs` (lib) generated 7 warnings
[INFO] [stderr] warning: `tang-rs` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tang_rs-7fb91b249f3d4004)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tang_rs
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/pool.rs - pool::Pool<M>::init (line 357) ... ignored
[INFO] [stdout] test src/pool.rs - pool::Pool<M>::run (line 302) ... ignored
[INFO] [stdout] test src/lib.rs - (line 15) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 15) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `channel` in module `async_std::sync`
[INFO] [stdout]   --> src/lib.rs:112:37
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let (tx, rx) = async_std::sync::channel(100);
[INFO] [stdout]    |                                     ^^^^^^^ not found in `async_std::sync`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 6  | use std::sync::mpsc::channel;
[INFO] [stdout]    |
[INFO] [stdout] 6  | use tokio::sync::broadcast::channel;
[INFO] [stdout]    |
[INFO] [stdout] 6  | use tokio::sync::mpsc::channel;
[INFO] [stdout]    |
[INFO] [stdout] 6  | use tokio::sync::oneshot::channel;
[INFO] [stdout]    |
[INFO] [stdout]      and 1 other candidate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 15)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "28dd2b2403041bf31ca2a954cfcad60263b60bf569d49514040d3d5f9101531c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28dd2b2403041bf31ca2a954cfcad60263b60bf569d49514040d3d5f9101531c", kill_on_drop: false }`
[INFO] [stdout] 28dd2b2403041bf31ca2a954cfcad60263b60bf569d49514040d3d5f9101531c