[INFO] fetching crate fmtbuf 0.1.2...
[INFO] testing fmtbuf-0.1.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate fmtbuf 0.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate fmtbuf 0.1.2
[INFO] finished tweaking crates.io crate fmtbuf 0.1.2
[INFO] tweaked toml for crates.io crate fmtbuf 0.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fmtbuf 0.1.2 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] crate crates.io crate fmtbuf 0.1.2 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc5a25e1a6b8073790cdc0d16188a198821879f2d82a0c0f87356170eafa7772
[INFO] running `Command { std: "docker" "start" "-a" "fc5a25e1a6b8073790cdc0d16188a198821879f2d82a0c0f87356170eafa7772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc5a25e1a6b8073790cdc0d16188a198821879f2d82a0c0f87356170eafa7772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5a25e1a6b8073790cdc0d16188a198821879f2d82a0c0f87356170eafa7772", kill_on_drop: false }`
[INFO] [stdout] fc5a25e1a6b8073790cdc0d16188a198821879f2d82a0c0f87356170eafa7772
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9c06b6b280caedeaa8c2bca0285ed376ee18000a09d2c56716dfdafe489aaeb
[INFO] running `Command { std: "docker" "start" "-a" "b9c06b6b280caedeaa8c2bca0285ed376ee18000a09d2c56716dfdafe489aaeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling fmtbuf v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "b9c06b6b280caedeaa8c2bca0285ed376ee18000a09d2c56716dfdafe489aaeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9c06b6b280caedeaa8c2bca0285ed376ee18000a09d2c56716dfdafe489aaeb", kill_on_drop: false }`
[INFO] [stdout] b9c06b6b280caedeaa8c2bca0285ed376ee18000a09d2c56716dfdafe489aaeb
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb03d04a98e7eccc1ec0f62c82fa3dc64e60e347cce818ed63d78ea422cde877
[INFO] running `Command { std: "docker" "start" "-a" "bb03d04a98e7eccc1ec0f62c82fa3dc64e60e347cce818ed63d78ea422cde877", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.2
[INFO] [stderr]    Compiling clap_lex v0.5.1
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling anstream v0.5.0
[INFO] [stderr]    Compiling clap_builder v4.4.2
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling clap v4.4.2
[INFO] [stderr]    Compiling fmtbuf v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.57s
[INFO] running `Command { std: "docker" "inspect" "bb03d04a98e7eccc1ec0f62c82fa3dc64e60e347cce818ed63d78ea422cde877", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb03d04a98e7eccc1ec0f62c82fa3dc64e60e347cce818ed63d78ea422cde877", kill_on_drop: false }`
[INFO] [stdout] bb03d04a98e7eccc1ec0f62c82fa3dc64e60e347cce818ed63d78ea422cde877
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e4184bb8329d0d4ec706a4a6d60555e26f07f861ff5cc116d39b328ef6cab626
[INFO] running `Command { std: "docker" "start" "-a" "e4184bb8329d0d4ec706a4a6d60555e26f07f861ff5cc116d39b328ef6cab626", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fmtbuf-b32a0812d1038e05)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test::finish_with_enough_space ... ok
[INFO] [stdout] test test::format_enough_space ... ok
[INFO] [stdout] test test::format_enough_space_just_enough_reserved ... ok
[INFO] [stdout] test test::format_truncation ... ok
[INFO] [stdout] test test::rfind_utf8_end_test ... ok
[INFO] [stdout] test test::set_reserve_should_not_change_written ... ok
[INFO] [stdout] test test::finish_with_full_overwrite_utf8 ... ok
[INFO] [stdout] test test::finish_with_or_with_longer_normal_closer ... ok
[INFO] [stdout] test utf8::test::rfind_utf8_end_examples ... ok
[INFO] [stderr]    Doc-tests fmtbuf
[INFO] [stdout] test test::finish_with_overwrite ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - test_readme (line 577) ... ok
[INFO] [stdout] test src/lib.rs - WriteBuf<'a>::finish_with (line 162) ... ok
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] test src/lib.rs - WriteBuf (line 45) ... ok
[INFO] [stdout] test src/lib.rs - test_readme (line 525) ... ok
[INFO] [stdout] test src/lib.rs - test_readme (line 497) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.36s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e4184bb8329d0d4ec706a4a6d60555e26f07f861ff5cc116d39b328ef6cab626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4184bb8329d0d4ec706a4a6d60555e26f07f861ff5cc116d39b328ef6cab626", kill_on_drop: false }`
[INFO] [stdout] e4184bb8329d0d4ec706a4a6d60555e26f07f861ff5cc116d39b328ef6cab626