[INFO] fetching crate piper 0.2.4...
[INFO] testing piper-0.2.4 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate piper 0.2.4 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate piper 0.2.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate piper 0.2.4
[INFO] tweaked toml for crates.io crate piper 0.2.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate piper 0.2.4 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "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 77 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 314eeb1cefdf6974a22a01bd48ed2dcd563441e0f34d44dbfec6a8513c769c15
[INFO] running `Command { std: "docker" "start" "-a" "314eeb1cefdf6974a22a01bd48ed2dcd563441e0f34d44dbfec6a8513c769c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "314eeb1cefdf6974a22a01bd48ed2dcd563441e0f34d44dbfec6a8513c769c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "314eeb1cefdf6974a22a01bd48ed2dcd563441e0f34d44dbfec6a8513c769c15", kill_on_drop: false }`
[INFO] [stdout] 314eeb1cefdf6974a22a01bd48ed2dcd563441e0f34d44dbfec6a8513c769c15
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93ee4a538838de09c721f0af9ac8c8f7eb98dc59706339b633baa35ee611a297
[INFO] running `Command { std: "docker" "start" "-a" "93ee4a538838de09c721f0af9ac8c8f7eb98dc59706339b633baa35ee611a297", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling piper v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "93ee4a538838de09c721f0af9ac8c8f7eb98dc59706339b633baa35ee611a297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93ee4a538838de09c721f0af9ac8c8f7eb98dc59706339b633baa35ee611a297", kill_on_drop: false }`
[INFO] [stdout] 93ee4a538838de09c721f0af9ac8c8f7eb98dc59706339b633baa35ee611a297
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6fe02acb816896241be39a27fd532370ea79ff6021901e79368de2d73bdc177
[INFO] running `Command { std: "docker" "start" "-a" "f6fe02acb816896241be39a27fd532370ea79ff6021901e79368de2d73bdc177", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling easy-parallel v3.3.1
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling async-executor v1.13.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.4.0
[INFO] [stderr]    Compiling piper v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 19.01s
[INFO] running `Command { std: "docker" "inspect" "f6fe02acb816896241be39a27fd532370ea79ff6021901e79368de2d73bdc177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6fe02acb816896241be39a27fd532370ea79ff6021901e79368de2d73bdc177", kill_on_drop: false }`
[INFO] [stdout] f6fe02acb816896241be39a27fd532370ea79ff6021901e79368de2d73bdc177
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aed3b2f6361c642d178b04859633fb871927d1f60b04de7a07f8b67e65ec768b
[INFO] running `Command { std: "docker" "start" "-a" "aed3b2f6361c642d178b04859633fb871927d1f60b04de7a07f8b67e65ec768b", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/piper-f6209d809f6a86bd)
[INFO] [stderr]      Running tests/pipe.rs (/opt/rustwide/target/debug/deps/pipe-29e32ff2941832ef)
[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] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test len ... ok
[INFO] [stdout] test smoke ... ok
[INFO] [stdout] test read ... ok
[INFO] [stdout] test large_pipe - should panic ... ok
[INFO] [stdout] test zero_cap_pipe - should panic ... ok
[INFO] [stdout] test dropping_writer_wakes_reader ... ok
[INFO] [stdout] test dropping_reader_wakes_writer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests piper
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test src/lib.rs - (line 145) - compile ... ok
[INFO] [stdout] test src/lib.rs - Reader::is_empty (line 404) ... ok
[INFO] [stdout] test src/lib.rs - (line 98) - compile ... ok
[INFO] [stdout] test src/lib.rs - Reader::len (line 389) ... ok
[INFO] [stdout] test src/lib.rs - Reader::is_full (line 439) ... ok
[INFO] [stdout] test src/lib.rs - Writer::len (line 694) ... ok
[INFO] [stdout] test src/lib.rs - Reader::try_drain (line 554) ... ok
[INFO] [stdout] test src/lib.rs - Writer::is_full (line 744) ... ok
[INFO] [stdout] test src/lib.rs - Reader::is_closed (line 459) ... ok
[INFO] [stdout] test src/lib.rs - _assert_send_sync (line 1119) ... ok
[INFO] [stdout] test src/lib.rs - Reader::poll_drain (line 487) ... ok
[INFO] [stdout] test src/lib.rs - Writer::try_fill (line 858) ... ok
[INFO] [stdout] test src/lib.rs - Writer::capacity (line 725) ... ok
[INFO] [stdout] test src/lib.rs - Reader::capacity (line 420) ... ok
[INFO] [stdout] test src/lib.rs - Writer::is_closed (line 764) ... ok
[INFO] [stdout] test src/lib.rs - Writer::poll_fill (line 792) ... ok
[INFO] [stdout] test src/lib.rs - Writer::is_empty (line 709) ... ok
[INFO] [stdout] test src/lib.rs - Reader::poll_drain_bytes (line 524) ... ok
[INFO] [stdout] test src/lib.rs - Writer::poll_fill_bytes (line 826) ... ok
[INFO] [stdout] test src/lib.rs - (line 34) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aed3b2f6361c642d178b04859633fb871927d1f60b04de7a07f8b67e65ec768b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed3b2f6361c642d178b04859633fb871927d1f60b04de7a07f8b67e65ec768b", kill_on_drop: false }`
[INFO] [stdout] aed3b2f6361c642d178b04859633fb871927d1f60b04de7a07f8b67e65ec768b