[INFO] fetching crate flexible-io 0.4.0...
[INFO] testing flexible-io-0.4.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate flexible-io 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate flexible-io 0.4.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate flexible-io 0.4.0
[INFO] tweaked toml for crates.io crate flexible-io 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flexible-io 0.4.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64194adb84c326f4c58ce54c1b8e48a804a5bb92deb580e137a057a716cd2697
[INFO] running `Command { std: "docker" "start" "-a" "64194adb84c326f4c58ce54c1b8e48a804a5bb92deb580e137a057a716cd2697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64194adb84c326f4c58ce54c1b8e48a804a5bb92deb580e137a057a716cd2697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64194adb84c326f4c58ce54c1b8e48a804a5bb92deb580e137a057a716cd2697", kill_on_drop: false }`
[INFO] [stdout] 64194adb84c326f4c58ce54c1b8e48a804a5bb92deb580e137a057a716cd2697
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c273c62bc5658a3ea787ccdca604d61cf044da1adea9fc44419c7112897a102
[INFO] running `Command { std: "docker" "start" "-a" "3c273c62bc5658a3ea787ccdca604d61cf044da1adea9fc44419c7112897a102", kill_on_drop: false }`
[INFO] [stderr]    Compiling flexible-io v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "3c273c62bc5658a3ea787ccdca604d61cf044da1adea9fc44419c7112897a102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c273c62bc5658a3ea787ccdca604d61cf044da1adea9fc44419c7112897a102", kill_on_drop: false }`
[INFO] [stdout] 3c273c62bc5658a3ea787ccdca604d61cf044da1adea9fc44419c7112897a102
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0135555148f42b83156ec6f1d0b7d4a6c0c3fd86ac6af6a628712ebbf8baf05d
[INFO] running `Command { std: "docker" "start" "-a" "0135555148f42b83156ec6f1d0b7d4a6c0c3fd86ac6af6a628712ebbf8baf05d", kill_on_drop: false }`
[INFO] [stderr]    Compiling flexible-io v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "0135555148f42b83156ec6f1d0b7d4a6c0c3fd86ac6af6a628712ebbf8baf05d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0135555148f42b83156ec6f1d0b7d4a6c0c3fd86ac6af6a628712ebbf8baf05d", kill_on_drop: false }`
[INFO] [stdout] 0135555148f42b83156ec6f1d0b7d4a6c0c3fd86ac6af6a628712ebbf8baf05d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 54699f7fdbbce71153a33d077a6198035293b8a7598c6052c26fe66d44320f1e
[INFO] running `Command { std: "docker" "start" "-a" "54699f7fdbbce71153a33d077a6198035293b8a7598c6052c26fe66d44320f1e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flexible_io-a7102ccdeda9ae45)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/aliasing.rs (/opt/rustwide/target/debug/deps/aliasing-a421853373ef5b32)
[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 4 tests
[INFO] [stdout] test reader_any ... ok
[INFO] [stdout] test reader_reuses ... ok
[INFO] [stdout] test writer_any ... ok
[INFO] [stdout] test writer_reuses ... ok
[INFO] [stdout] 
[INFO] [stderr]      Running tests/boxed.rs (/opt/rustwide/target/debug/deps/boxed-5df2798d85670d25)
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test motivation::motivating_case ... ok
[INFO] [stdout] test boxed_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/motivation.rs (/opt/rustwide/target/debug/deps/motivation-4f67b8c535ce46f9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test motivating_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flexible_io
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/writer.rs - writer::Writer (line 21) ... ok
[INFO] [stdout] test src/reader.rs - reader::Reader (line 29) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "54699f7fdbbce71153a33d077a6198035293b8a7598c6052c26fe66d44320f1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54699f7fdbbce71153a33d077a6198035293b8a7598c6052c26fe66d44320f1e", kill_on_drop: false }`
[INFO] [stdout] 54699f7fdbbce71153a33d077a6198035293b8a7598c6052c26fe66d44320f1e