[INFO] fetching crate wist 0.1.8...
[INFO] checking wist-0.1.8 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate wist 0.1.8 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate wist 0.1.8
[INFO] finished tweaking crates.io crate wist 0.1.8
[INFO] tweaked toml for crates.io crate wist 0.1.8 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wist 0.1.8 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wist 0.1.8 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wisp-mux v5.1.0
[INFO] [stderr]   Downloaded whisk v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79e9da0ffd920ee61c0d4ada539b4c51e17af2eba90575db53ff02ea234c0a72
[INFO] running `Command { std: "docker" "start" "-a" "79e9da0ffd920ee61c0d4ada539b4c51e17af2eba90575db53ff02ea234c0a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79e9da0ffd920ee61c0d4ada539b4c51e17af2eba90575db53ff02ea234c0a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79e9da0ffd920ee61c0d4ada539b4c51e17af2eba90575db53ff02ea234c0a72", kill_on_drop: false }`
[INFO] [stdout] 79e9da0ffd920ee61c0d4ada539b4c51e17af2eba90575db53ff02ea234c0a72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43c4a3f5da40523a9d6b4b7d24e0b754dbbfddd8c1422c95562702edb4509c5f
[INFO] running `Command { std: "docker" "start" "-a" "43c4a3f5da40523a9d6b4b7d24e0b754dbbfddd8c1422c95562702edb4509c5f", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking whisk v0.13.0
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking wist v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `future::poll_fn`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     future::poll_fn,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `future::poll_fn`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     future::poll_fn,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `items`
[INFO] [stdout]   --> src/lib.rs:59:28
[INFO] [stdout]    |
[INFO] [stdout] 59 |             WsFrame::Bytes(items) => 0x0,
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `items`
[INFO] [stdout]   --> src/lib.rs:59:28
[INFO] [stdout]    |
[INFO] [stdout] 59 |             WsFrame::Bytes(items) => 0x0,
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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/lib.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     async fn req(&mut self, a: &[u8]) -> Result<Vec<u8>, Self::Error>;
[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] 124 -     async fn req(&mut self, a: &[u8]) -> Result<Vec<u8>, Self::Error>;
[INFO] [stdout] 124 +     fn req(&mut self, a: &[u8]) -> impl std::future::Future<Output = Result<Vec<u8>, Self::Error>> + 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/lib.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     async fn req(&mut self, a: &[u8]) -> Result<Vec<u8>, Self::Error>;
[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] 124 -     async fn req(&mut self, a: &[u8]) -> Result<Vec<u8>, Self::Error>;
[INFO] [stdout] 124 +     fn req(&mut self, a: &[u8]) -> impl std::future::Future<Output = Result<Vec<u8>, Self::Error>> + Send;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.24s
[INFO] running `Command { std: "docker" "inspect" "43c4a3f5da40523a9d6b4b7d24e0b754dbbfddd8c1422c95562702edb4509c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c4a3f5da40523a9d6b4b7d24e0b754dbbfddd8c1422c95562702edb4509c5f", kill_on_drop: false }`
[INFO] [stdout] 43c4a3f5da40523a9d6b4b7d24e0b754dbbfddd8c1422c95562702edb4509c5f