[INFO] fetching crate tower-buffer 0.3.0...
[INFO] testing tower-buffer-0.3.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate tower-buffer 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tower-buffer 0.3.0
[INFO] finished tweaking crates.io crate tower-buffer 0.3.0
[INFO] tweaked toml for crates.io crate tower-buffer 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tower-buffer 0.3.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "generate-lockfile" "--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]      Locking 26 packages to latest compatible versions
[INFO] [stderr]       Adding pin-project v0.4.30 (available: v1.1.11)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.52.1)
[INFO] [stderr]       Adding tokio-test v0.2.1 (available: v0.4.5)
[INFO] [stderr]       Adding tower-test v0.3.0 (available: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b12c7afae002894e75e58180bbbc0916a6c5a7fa8fb6d3038a2601fd316af8ec
[INFO] running `Command { std: "docker" "start" "-a" "b12c7afae002894e75e58180bbbc0916a6c5a7fa8fb6d3038a2601fd316af8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b12c7afae002894e75e58180bbbc0916a6c5a7fa8fb6d3038a2601fd316af8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b12c7afae002894e75e58180bbbc0916a6c5a7fa8fb6d3038a2601fd316af8ec", kill_on_drop: false }`
[INFO] [stdout] b12c7afae002894e75e58180bbbc0916a6c5a7fa8fb6d3038a2601fd316af8ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54bb43da1149d088dc0cb9a53bbf8ae2649489133648b545092353b7a866e7ae
[INFO] running `Command { std: "docker" "start" "-a" "54bb43da1149d088dc0cb9a53bbf8ae2649489133648b545092353b7a866e7ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pin-project-internal v0.4.30
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling pin-project v0.4.30
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling tower-buffer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `project`: consider naming projected type by passing `project` argument to #[pin_project] attribute instead, see release note <https://github.com/taiki-e/pin-project/releases/tag/v0.4.21> for details
[INFO] [stdout]   --> src/future.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 |     #[project]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.04s
[INFO] running `Command { std: "docker" "inspect" "54bb43da1149d088dc0cb9a53bbf8ae2649489133648b545092353b7a866e7ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54bb43da1149d088dc0cb9a53bbf8ae2649489133648b545092353b7a866e7ae", kill_on_drop: false }`
[INFO] [stdout] 54bb43da1149d088dc0cb9a53bbf8ae2649489133648b545092353b7a866e7ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 762dd73073f8da9714cdeddccad8d1711ea17ece4b01f0e0ebd1c813a31cd2e2
[INFO] running `Command { std: "docker" "start" "-a" "762dd73073f8da9714cdeddccad8d1711ea17ece4b01f0e0ebd1c813a31cd2e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-test v0.2.1
[INFO] [stdout] warning: use of deprecated macro `project`: consider naming projected type by passing `project` argument to #[pin_project] attribute instead, see release note <https://github.com/taiki-e/pin-project/releases/tag/v0.4.21> for details
[INFO] [stdout]   --> src/future.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 |     #[project]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tower-test v0.3.0
[INFO] [stderr]    Compiling tower-buffer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `assert_ready`
[INFO] [stdout]  --> tests/buffer.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio_test::{assert_pending, assert_ready, assert_ready_err, assert_ready_ok, task};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `project`: consider naming projected type by passing `project` argument to #[pin_project] attribute instead, see release note <https://github.com/taiki-e/pin-project/releases/tag/v0.4.21> for details
[INFO] [stdout]   --> src/future.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 |     #[project]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "762dd73073f8da9714cdeddccad8d1711ea17ece4b01f0e0ebd1c813a31cd2e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "762dd73073f8da9714cdeddccad8d1711ea17ece4b01f0e0ebd1c813a31cd2e2", kill_on_drop: false }`
[INFO] [stdout] 762dd73073f8da9714cdeddccad8d1711ea17ece4b01f0e0ebd1c813a31cd2e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 073f2440c442c7508723bc3646e4237999969615e47c00e4f962e0dd62dcfab4
[INFO] running `Command { std: "docker" "start" "-a" "073f2440c442c7508723bc3646e4237999969615e47c00e4f962e0dd62dcfab4", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `project`: consider naming projected type by passing `project` argument to #[pin_project] attribute instead, see release note <https://github.com/taiki-e/pin-project/releases/tag/v0.4.21> for details
[INFO] [stderr]   --> src/future.rs:52:7
[INFO] [stderr]    |
[INFO] [stderr] 52 |     #[project]
[INFO] [stderr]    |       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tower-buffer` (lib) generated 1 warning
[INFO] [stderr] warning: unused import: `assert_ready`
[INFO] [stderr]  --> tests/buffer.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio_test::{assert_pending, assert_ready, assert_ready_err, assert_ready_ok, task};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tower-buffer` (test "buffer") generated 1 warning (run `cargo fix --test "buffer" -p tower-buffer` to apply 1 suggestion)
[INFO] [stderr] warning: `tower-buffer` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tower_buffer-55266b3c54ce5cad)
[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]      Running tests/buffer.rs (/opt/rustwide/target/debug/deps/buffer-7e3eb95053daf69b)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test poll_ready_when_worker_is_dropped_early ... ok
[INFO] [stdout] test req_and_res ... ok
[INFO] [stdout] test response_future_when_worker_is_dropped_early ... ok
[INFO] [stdout] test when_inner_fails ... ok
[INFO] [stdout] test when_inner_is_not_ready ... ok
[INFO] [stdout] test clears_canceled_requests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tower_buffer
[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" "073f2440c442c7508723bc3646e4237999969615e47c00e4f962e0dd62dcfab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073f2440c442c7508723bc3646e4237999969615e47c00e4f962e0dd62dcfab4", kill_on_drop: false }`
[INFO] [stdout] 073f2440c442c7508723bc3646e4237999969615e47c00e4f962e0dd62dcfab4
