[INFO] fetching crate wist 0.1.8...
[INFO] testing wist-0.1.8 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate wist 0.1.8 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wist 0.1.8 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic_enum v0.3.0
[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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fff3bbcc568c381d26cc6ea6ea496cea4707fc581232eed3e2ff87ccf4a8abde
[INFO] running `Command { std: "docker" "start" "-a" "fff3bbcc568c381d26cc6ea6ea496cea4707fc581232eed3e2ff87ccf4a8abde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fff3bbcc568c381d26cc6ea6ea496cea4707fc581232eed3e2ff87ccf4a8abde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff3bbcc568c381d26cc6ea6ea496cea4707fc581232eed3e2ff87ccf4a8abde", kill_on_drop: false }`
[INFO] [stdout] fff3bbcc568c381d26cc6ea6ea496cea4707fc581232eed3e2ff87ccf4a8abde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60b79b61e7b59ccd7bd39ddd0a3c0ca940aacb9f1998936d0e8b31cfd33a5c72
[INFO] running `Command { std: "docker" "start" "-a" "60b79b61e7b59ccd7bd39ddd0a3c0ca940aacb9f1998936d0e8b31cfd33a5c72", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling whisk v0.13.0
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.64s
[INFO] running `Command { std: "docker" "inspect" "60b79b61e7b59ccd7bd39ddd0a3c0ca940aacb9f1998936d0e8b31cfd33a5c72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60b79b61e7b59ccd7bd39ddd0a3c0ca940aacb9f1998936d0e8b31cfd33a5c72", kill_on_drop: false }`
[INFO] [stdout] 60b79b61e7b59ccd7bd39ddd0a3c0ca940aacb9f1998936d0e8b31cfd33a5c72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45973782e0fbf47ea4421081b4dcf08a8941f7c9a5b380e97a04cd749c247ab8
[INFO] running `Command { std: "docker" "start" "-a" "45973782e0fbf47ea4421081b4dcf08a8941f7c9a5b380e97a04cd749c247ab8", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "45973782e0fbf47ea4421081b4dcf08a8941f7c9a5b380e97a04cd749c247ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45973782e0fbf47ea4421081b4dcf08a8941f7c9a5b380e97a04cd749c247ab8", kill_on_drop: false }`
[INFO] [stdout] 45973782e0fbf47ea4421081b4dcf08a8941f7c9a5b380e97a04cd749c247ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] af03b1e6cd20f544b7dec57f1a1993602a5c21019aebe321f799dfd279498d4b
[INFO] running `Command { std: "docker" "start" "-a" "af03b1e6cd20f544b7dec57f1a1993602a5c21019aebe321f799dfd279498d4b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `future::poll_fn`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     future::poll_fn,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `items`
[INFO] [stderr]   --> src/lib.rs:59:28
[INFO] [stderr]    |
[INFO] [stderr] 59 |             WsFrame::Bytes(items) => 0x0,
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified
[INFO] [stderr]    --> src/lib.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     async fn req(&mut self, a: &[u8]) -> Result<Vec<u8>, Self::Error>;
[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] 124 -     async fn req(&mut self, a: &[u8]) -> Result<Vec<u8>, Self::Error>;
[INFO] [stderr] 124 +     fn req(&mut self, a: &[u8]) -> impl std::future::Future<Output = Result<Vec<u8>, Self::Error>> + Send;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `wist` (lib) generated 3 warnings (run `cargo fix --lib -p wist` to apply 1 suggestion)
[INFO] [stderr] warning: `wist` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wist-7ac0c1584d2530f4)
[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 wist
[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" "af03b1e6cd20f544b7dec57f1a1993602a5c21019aebe321f799dfd279498d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af03b1e6cd20f544b7dec57f1a1993602a5c21019aebe321f799dfd279498d4b", kill_on_drop: false }`
[INFO] [stdout] af03b1e6cd20f544b7dec57f1a1993602a5c21019aebe321f799dfd279498d4b