[INFO] fetching crate async-buf 0.1.0...
[INFO] testing async-buf-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate async-buf 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate async-buf 0.1.0
[INFO] finished tweaking crates.io crate async-buf 0.1.0
[INFO] tweaked toml for crates.io crate async-buf 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-buf 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 41 packages to latest compatible versions
[INFO] [stderr]       Adding async-io v1.13.0 (available: v2.6.0)
[INFO] [stderr]       Adding futures-lite v1.13.0 (available: v2.6.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fe99ff67cfba2cc1769e94ebd9dd2d6b3befe2af6f47d08700ccb706fcdeaab
[INFO] running `Command { std: "docker" "start" "-a" "7fe99ff67cfba2cc1769e94ebd9dd2d6b3befe2af6f47d08700ccb706fcdeaab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fe99ff67cfba2cc1769e94ebd9dd2d6b3befe2af6f47d08700ccb706fcdeaab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fe99ff67cfba2cc1769e94ebd9dd2d6b3befe2af6f47d08700ccb706fcdeaab", kill_on_drop: false }`
[INFO] [stdout] 7fe99ff67cfba2cc1769e94ebd9dd2d6b3befe2af6f47d08700ccb706fcdeaab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87c440986cf674e2f902da4d4229193a82369de152a823342a7e18c43c3329dd
[INFO] running `Command { std: "docker" "start" "-a" "87c440986cf674e2f902da4d4229193a82369de152a823342a7e18c43c3329dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling rustix v0.37.28
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling async-lock v2.8.0
[INFO] [stderr]    Compiling futures-lite v1.13.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling async-buf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `new_uninit` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(new_uninit)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `poll_ready`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(poll_ready)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_reader.rs:285:69
[INFO] [stdout]     |
[INFO] [stdout] 285 |             *self.cap = self.inner.as_mut().poll_read(cx, self.buf).ready()??;
[INFO] [stdout]     |                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 285 -             *self.cap = self.inner.as_mut().poll_read(cx, self.buf).ready()??;
[INFO] [stdout] 285 +             *self.cap = self.inner.as_mut().poll_read(cx, self.buf).Ready()??;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 285 |             *self.cap = self.inner.as_mut().poll_read(cx, self.buf).is_ready()??;
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_reader.rs:329:65
[INFO] [stdout]     |
[INFO] [stdout] 329 |                     let v = s.inner.as_mut().poll_read(cx, buf).ready()?;
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 329 -                     let v = s.inner.as_mut().poll_read(cx, buf).ready()?;
[INFO] [stdout] 329 +                     let v = s.inner.as_mut().poll_read(cx, buf).Ready()?;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 329 |                     let v = s.inner.as_mut().poll_read(cx, buf).is_ready()?;
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_reader.rs:334:49
[INFO] [stdout]     |
[INFO] [stdout] 334 |                     let r = s.poll_fill_buf(cx).ready()?;
[INFO] [stdout]     |                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 334 -                     let r = s.poll_fill_buf(cx).ready()?;
[INFO] [stdout] 334 +                     let r = s.poll_fill_buf(cx).Ready()?;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 334 |                     let r = s.poll_fill_buf(cx).is_ready()?;
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/buf_reader.rs:337:46
[INFO] [stdout]     |
[INFO] [stdout] 337 |                         Ok(mut rem) => match rem.read(buf) {
[INFO] [stdout]     |                                              ^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_reader.rs:353:61
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 let v = s.inner.as_mut().poll_read(cx, buf).ready()?;
[INFO] [stdout]     |                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 353 -                 let v = s.inner.as_mut().poll_read(cx, buf).ready()?;
[INFO] [stdout] 353 +                 let v = s.inner.as_mut().poll_read(cx, buf).Ready()?;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 let v = s.inner.as_mut().poll_read(cx, buf).is_ready()?;
[INFO] [stdout]     |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_reader.rs:358:45
[INFO] [stdout]     |
[INFO] [stdout] 358 |                 let r = s.poll_fill_buf(cx).ready()?;
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 358 -                 let r = s.poll_fill_buf(cx).ready()?;
[INFO] [stdout] 358 +                 let r = s.poll_fill_buf(cx).Ready()?;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 358 |                 let r = s.poll_fill_buf(cx).is_ready()?;
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/buf_reader.rs:360:42
[INFO] [stdout]     |
[INFO] [stdout] 360 |                     Ok(mut rem) => match rem.read(buf) {
[INFO] [stdout]     |                                          ^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_writer.rs:315:46
[INFO] [stdout]     |
[INFO] [stdout] 315 |             self.as_mut().poll_flush_buf(cx).ready()??;
[INFO] [stdout]     |                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 315 -             self.as_mut().poll_flush_buf(cx).ready()??;
[INFO] [stdout] 315 +             self.as_mut().poll_flush_buf(cx).Ready()??;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 315 |             self.as_mut().poll_flush_buf(cx).is_ready()??;
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_writer.rs:325:42
[INFO] [stdout]     |
[INFO] [stdout] 325 |         self.as_mut().poll_flush_buf(cx).ready()??;
[INFO] [stdout]     |                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 325 -         self.as_mut().poll_flush_buf(cx).ready()??;
[INFO] [stdout] 325 +         self.as_mut().poll_flush_buf(cx).Ready()??;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 325 |         self.as_mut().poll_flush_buf(cx).is_ready()??;
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `ready` found for enum `Poll<T>` in the current scope
[INFO] [stdout]    --> src/buf_writer.rs:330:42
[INFO] [stdout]     |
[INFO] [stdout] 330 |         self.as_mut().poll_flush_buf(cx).ready()??;
[INFO] [stdout]     |                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 330 -         self.as_mut().poll_flush_buf(cx).ready()??;
[INFO] [stdout] 330 +         self.as_mut().poll_flush_buf(cx).Ready()??;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `is_ready` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 330 |         self.as_mut().poll_flush_buf(cx).is_ready()??;
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-buf` (lib) due to 11 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "87c440986cf674e2f902da4d4229193a82369de152a823342a7e18c43c3329dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87c440986cf674e2f902da4d4229193a82369de152a823342a7e18c43c3329dd", kill_on_drop: false }`
[INFO] [stdout] 87c440986cf674e2f902da4d4229193a82369de152a823342a7e18c43c3329dd