[INFO] fetching crate autocache 0.1.10...
[INFO] testing autocache-0.1.10 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate autocache 0.1.10 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate autocache 0.1.10 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] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate autocache 0.1.10
[INFO] finished tweaking crates.io crate autocache 0.1.10
[INFO] tweaked toml for crates.io crate autocache 0.1.10 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]      Locking 147 packages to latest compatible versions
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "855f8d5a843f3852f8deb144794c7a0ea5588240e54adec551853143522e566a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "855f8d5a843f3852f8deb144794c7a0ea5588240e54adec551853143522e566a", kill_on_drop: false }`
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[INFO] [stdout] 75092d866ef1b1e003b25a31a386cbca8d51b95ecfefdad016e06150db855864
[INFO] running `Command { std: "docker" "start" "-a" "75092d866ef1b1e003b25a31a386cbca8d51b95ecfefdad016e06150db855864", kill_on_drop: false }`
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling smallvec v1.13.2
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[INFO] [stderr]    Compiling zerocopy v0.7.34
[INFO] [stderr]    Compiling num_cpus v1.16.0
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[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling raw-cpuid v11.0.2
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling moka v0.12.7
[INFO] [stderr]    Compiling futures-channel v0.3.30
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[INFO] [stderr]    Compiling tagptr v0.2.0
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling triomphe v0.1.11
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling parking_lot v0.12.3
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[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.13
[INFO] [stderr]    Compiling quanta v0.12.3
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio v1.37.0
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling async_singleflight v0.5.2
[INFO] [stderr]    Compiling autocache v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]  --> src/cache.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]   |
[INFO] [stdout] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/cache.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.20s
[INFO] running `Command { std: "docker" "inspect" "75092d866ef1b1e003b25a31a386cbca8d51b95ecfefdad016e06150db855864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75092d866ef1b1e003b25a31a386cbca8d51b95ecfefdad016e06150db855864", kill_on_drop: false }`
[INFO] [stdout] 75092d866ef1b1e003b25a31a386cbca8d51b95ecfefdad016e06150db855864
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00adb105a6f5fc21f83f4e8d0d9d7d182346a7344b938c36eabfd92615ba3111
[INFO] running `Command { std: "docker" "start" "-a" "00adb105a6f5fc21f83f4e8d0d9d7d182346a7344b938c36eabfd92615ba3111", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling autocache v0.1.10 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]  --> src/cache.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]   |
[INFO] [stdout] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/cache.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `count` and `message` are never read
[INFO] [stdout]   --> src/test/local_cache_test.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Item {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 12 |     count: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]  --> src/cache.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]   |
[INFO] [stdout] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/cache.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.85s
[INFO] running `Command { std: "docker" "inspect" "00adb105a6f5fc21f83f4e8d0d9d7d182346a7344b938c36eabfd92615ba3111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00adb105a6f5fc21f83f4e8d0d9d7d182346a7344b938c36eabfd92615ba3111", kill_on_drop: false }`
[INFO] [stdout] 00adb105a6f5fc21f83f4e8d0d9d7d182346a7344b938c36eabfd92615ba3111
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b1a504f405e6f1944502716e93df1edafcc3a9eac048bde167fb13ec21d5f978
[INFO] running `Command { std: "docker" "start" "-a" "b1a504f405e6f1944502716e93df1edafcc3a9eac048bde167fb13ec21d5f978", kill_on_drop: false }`
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]  --> src/cache.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]   |
[INFO] [stderr] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stderr] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/cache.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stderr] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `count` and `message` are never read
[INFO] [stderr]   --> src/test/local_cache_test.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Item {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 12 |     count: u32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 13 |     message: String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `autocache` (lib) generated 2 warnings
[INFO] [stderr] warning: `autocache` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/autocache-ca699a7225a73c24)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests autocache
[INFO] [stdout] test test::local_cache_test::test_builder ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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] running `Command { std: "docker" "inspect" "b1a504f405e6f1944502716e93df1edafcc3a9eac048bde167fb13ec21d5f978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1a504f405e6f1944502716e93df1edafcc3a9eac048bde167fb13ec21d5f978", kill_on_drop: false }`
[INFO] [stdout] b1a504f405e6f1944502716e93df1edafcc3a9eac048bde167fb13ec21d5f978
[INFO] testing autocache-0.1.10 against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] extracting crate autocache 0.1.10 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate autocache 0.1.10 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] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate autocache 0.1.10
[INFO] finished tweaking crates.io crate autocache 0.1.10
[INFO] tweaked toml for crates.io crate autocache 0.1.10 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 147 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.21.0 (latest: v0.22.0)
[INFO] [stderr]       Adding bitmaps v2.1.0 (latest: v3.2.1)
[INFO] [stderr]       Adding gimli v0.28.1 (latest: v0.29.0)
[INFO] [stderr]       Adding hashbrown v0.13.2 (latest: v0.14.5)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.35.0)
[INFO] [stderr]       Adding redis v0.23.3 (latest: v0.25.3)
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[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.1+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.56.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
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[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.5)
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[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.5)
[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] 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] 24a9c57a72e16f084f0cd0e853d891ab7860c4ac3127c457f3937a3c4974f336
[INFO] running `Command { std: "docker" "start" "-a" "24a9c57a72e16f084f0cd0e853d891ab7860c4ac3127c457f3937a3c4974f336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24a9c57a72e16f084f0cd0e853d891ab7860c4ac3127c457f3937a3c4974f336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24a9c57a72e16f084f0cd0e853d891ab7860c4ac3127c457f3937a3c4974f336", kill_on_drop: false }`
[INFO] [stdout] 24a9c57a72e16f084f0cd0e853d891ab7860c4ac3127c457f3937a3c4974f336
[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] 2fc90379491dabd74cd4adf8e2c05bd720a68debb42ddb6f9b0219c9405fb3de
[INFO] running `Command { std: "docker" "start" "-a" "2fc90379491dabd74cd4adf8e2c05bd720a68debb42ddb6f9b0219c9405fb3de", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling zerocopy v0.7.34
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling raw-cpuid v11.0.2
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling moka v0.12.7
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling uuid v1.8.0
[INFO] [stderr]    Compiling triomphe v0.1.11
[INFO] [stderr]    Compiling tagptr v0.2.0
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.13
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling quanta v0.12.3
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio v1.37.0
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling async_singleflight v0.5.2
[INFO] [stderr]    Compiling autocache v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]  --> src/cache.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]   |
[INFO] [stdout] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/cache.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.23s
[INFO] running `Command { std: "docker" "inspect" "2fc90379491dabd74cd4adf8e2c05bd720a68debb42ddb6f9b0219c9405fb3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc90379491dabd74cd4adf8e2c05bd720a68debb42ddb6f9b0219c9405fb3de", kill_on_drop: false }`
[INFO] [stdout] 2fc90379491dabd74cd4adf8e2c05bd720a68debb42ddb6f9b0219c9405fb3de
[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] d1a3df47bb5d57edf4dc7ba1df2c77195606869fa21661371cdb3c2dcd4dc579
[INFO] running `Command { std: "docker" "start" "-a" "d1a3df47bb5d57edf4dc7ba1df2c77195606869fa21661371cdb3c2dcd4dc579", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling autocache v0.1.10 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]  --> src/cache.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]   |
[INFO] [stdout] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/cache.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `count` and `message` are never read
[INFO] [stdout]   --> src/test/local_cache_test.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Item {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 12 |     count: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]  --> src/cache.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]   |
[INFO] [stdout] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stdout] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stdout]   --> src/cache.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stdout] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stdout]    |
[INFO] [stdout] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stdout] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 8.17s
[INFO] running `Command { std: "docker" "inspect" "d1a3df47bb5d57edf4dc7ba1df2c77195606869fa21661371cdb3c2dcd4dc579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1a3df47bb5d57edf4dc7ba1df2c77195606869fa21661371cdb3c2dcd4dc579", kill_on_drop: false }`
[INFO] [stdout] d1a3df47bb5d57edf4dc7ba1df2c77195606869fa21661371cdb3c2dcd4dc579
[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", kill_on_drop: false }`
[INFO] [stdout] f18bfe647840f46c848026c1a759d8a388e2c3bf00f98886fcd87677fbbe0e43
[INFO] running `Command { std: "docker" "start" "-a" "f18bfe647840f46c848026c1a759d8a388e2c3bf00f98886fcd87677fbbe0e43", kill_on_drop: false }`
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]  --> src/cache.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr]   = note: `#[warn(async_fn_in_trait)]` on by default
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]   |
[INFO] [stderr] 8 -     async fn mget(&self, keys: &[Self::Key]) -> Result<Vec<Self::Value>>;
[INFO] [stderr] 8 +     fn mget(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<Vec<Self::Value>>> + Send;
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]   --> src/cache.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future`
[INFO] [stderr] help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change
[INFO] [stderr]    |
[INFO] [stderr] 15 -     async fn mdel(&self, keys: &[Self::Key]) -> Result<()>;
[INFO] [stderr] 15 +     fn mdel(&self, keys: &[Self::Key]) -> impl std::future::Future<Output = Result<()>> + Send;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `count` and `message` are never read
[INFO] [stderr]   --> src/test/local_cache_test.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Item {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 12 |     count: u32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 13 |     message: String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Item` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `autocache` (lib) generated 2 warnings
[INFO] [stderr] warning: `autocache` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/autocache-ca699a7225a73c24)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::local_cache_test::test_builder ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests autocache
[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] running `Command { std: "docker" "inspect" "f18bfe647840f46c848026c1a759d8a388e2c3bf00f98886fcd87677fbbe0e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f18bfe647840f46c848026c1a759d8a388e2c3bf00f98886fcd87677fbbe0e43", kill_on_drop: false }`
[INFO] [stdout] f18bfe647840f46c848026c1a759d8a388e2c3bf00f98886fcd87677fbbe0e43
