[INFO] fetching crate cassette 0.2.4...
[INFO] checking cassette-0.2.4 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate cassette 0.2.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate cassette 0.2.4 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cassette 0.2.4
[INFO] finished tweaking crates.io crate cassette 0.2.4
[INFO] tweaked toml for crates.io crate cassette 0.2.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52542ffacf8702229f8729ffa5adc60b557f8eaba941f8b7c3c25718f265172d
[INFO] running `Command { std: "docker" "start" "-a" "52542ffacf8702229f8729ffa5adc60b557f8eaba941f8b7c3c25718f265172d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52542ffacf8702229f8729ffa5adc60b557f8eaba941f8b7c3c25718f265172d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52542ffacf8702229f8729ffa5adc60b557f8eaba941f8b7c3c25718f265172d", kill_on_drop: false }`
[INFO] [stdout] 52542ffacf8702229f8729ffa5adc60b557f8eaba941f8b7c3c25718f265172d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b294d89a023a0b5686f16e803a9cad5cebe33f95e42b6a5789466249f02b4baa
[INFO] running `Command { std: "docker" "start" "-a" "b294d89a023a0b5686f16e803a9cad5cebe33f95e42b6a5789466249f02b4baa", kill_on_drop: false }`
[INFO] [stderr]     Checking cassette v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl<F> Unpin for PollFn<F> {}
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn poll_fn<T, F>(f: F) -> PollFn<F>
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::assert_future`: all items of this mod were integrated into `core`
[INFO] [stdout]   --> src/futures.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl<F> fmt::Debug for PollFn<F> {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 | impl<T, F> Future for PollFn<F>
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl<F> Unpin for PollFn<F> {}
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn poll_fn<T, F>(f: F) -> PollFn<F>
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::assert_future`: all items of this mod were integrated into `core`
[INFO] [stdout]   --> src/futures.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl<F> fmt::Debug for PollFn<F> {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 | impl<T, F> Future for PollFn<F>
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:36
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                                    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]    --> src/futures.rs:104:15
[INFO] [stdout]     |
[INFO] [stdout] 104 |         (&mut self.f)(cx)
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:36
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                                    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]    --> src/futures.rs:104:15
[INFO] [stdout]     |
[INFO] [stdout] 104 |         (&mut self.f)(cx)
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "b294d89a023a0b5686f16e803a9cad5cebe33f95e42b6a5789466249f02b4baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b294d89a023a0b5686f16e803a9cad5cebe33f95e42b6a5789466249f02b4baa", kill_on_drop: false }`
[INFO] [stdout] b294d89a023a0b5686f16e803a9cad5cebe33f95e42b6a5789466249f02b4baa
[INFO] checking cassette-0.2.4 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg
[INFO] extracting crate cassette 0.2.4 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate cassette 0.2.4 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cassette 0.2.4
[INFO] finished tweaking crates.io crate cassette 0.2.4
[INFO] tweaked toml for crates.io crate cassette 0.2.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d8e026a4fd710bb7a43271256965fc509f9d699b791235cc5a2383b9ebc16e5
[INFO] running `Command { std: "docker" "start" "-a" "1d8e026a4fd710bb7a43271256965fc509f9d699b791235cc5a2383b9ebc16e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d8e026a4fd710bb7a43271256965fc509f9d699b791235cc5a2383b9ebc16e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d8e026a4fd710bb7a43271256965fc509f9d699b791235cc5a2383b9ebc16e5", kill_on_drop: false }`
[INFO] [stdout] 1d8e026a4fd710bb7a43271256965fc509f9d699b791235cc5a2383b9ebc16e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunexpected_cfgs" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] 29ee66de80c4cc4d7aab2992adbb7658f4a8022d6aec784221dc562d8335dd4a
[INFO] running `Command { std: "docker" "start" "-a" "29ee66de80c4cc4d7aab2992adbb7658f4a8022d6aec784221dc562d8335dd4a", kill_on_drop: false }`
[INFO] [stderr]     Checking cassette v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl<F> Unpin for PollFn<F> {}
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn poll_fn<T, F>(f: F) -> PollFn<F>
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::assert_future`: all items of this mod were integrated into `core`
[INFO] [stdout]   --> src/futures.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl<F> fmt::Debug for PollFn<F> {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 | impl<T, F> Future for PollFn<F>
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl<F> Unpin for PollFn<F> {}
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:85:31
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn poll_fn<T, F>(f: F) -> PollFn<F>
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::assert_future`: all items of this mod were integrated into `core`
[INFO] [stdout]   --> src/futures.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl<F> fmt::Debug for PollFn<F> {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `futures::PollFn`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 | impl<T, F> Future for PollFn<F>
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:36
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                                    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]    --> src/futures.rs:104:15
[INFO] [stdout]     |
[INFO] [stdout] 104 |         (&mut self.f)(cx)
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]   --> src/futures.rs:89:36
[INFO] [stdout]    |
[INFO] [stdout] 89 |     assert_future::<T, _>(PollFn { f })
[INFO] [stdout]    |                                    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `futures::PollFn::f`: use `core::future::PollFn` instead
[INFO] [stdout]    --> src/futures.rs:104:15
[INFO] [stdout]     |
[INFO] [stdout] 104 |         (&mut self.f)(cx)
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "29ee66de80c4cc4d7aab2992adbb7658f4a8022d6aec784221dc562d8335dd4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29ee66de80c4cc4d7aab2992adbb7658f4a8022d6aec784221dc562d8335dd4a", kill_on_drop: false }`
[INFO] [stdout] 29ee66de80c4cc4d7aab2992adbb7658f4a8022d6aec784221dc562d8335dd4a
