[INFO] fetching crate pow-captcha-core 0.2.2...
[INFO] testing pow-captcha-core-0.2.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate pow-captcha-core 0.2.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate pow-captcha-core 0.2.2
[INFO] finished tweaking crates.io crate pow-captcha-core 0.2.2
[INFO] tweaked toml for crates.io crate pow-captcha-core 0.2.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pow-captcha-core 0.2.2 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 pow-captcha-core 0.2.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f3de84be86b6051a9db437f9552206f8020348e65a4da0f12d0641aee56e73a2
[INFO] running `Command { std: "docker" "start" "-a" "f3de84be86b6051a9db437f9552206f8020348e65a4da0f12d0641aee56e73a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3de84be86b6051a9db437f9552206f8020348e65a4da0f12d0641aee56e73a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3de84be86b6051a9db437f9552206f8020348e65a4da0f12d0641aee56e73a2", kill_on_drop: false }`
[INFO] [stdout] f3de84be86b6051a9db437f9552206f8020348e65a4da0f12d0641aee56e73a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 8f4cbcf7567bb5a10f59de9a83ef1c588fc9654194a67f5caaab1ca4dcc34dea
[INFO] running `Command { std: "docker" "start" "-a" "8f4cbcf7567bb5a10f59de9a83ef1c588fc9654194a67f5caaab1ca4dcc34dea", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pow-captcha-core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.91s
[INFO] running `Command { std: "docker" "inspect" "8f4cbcf7567bb5a10f59de9a83ef1c588fc9654194a67f5caaab1ca4dcc34dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f4cbcf7567bb5a10f59de9a83ef1c588fc9654194a67f5caaab1ca4dcc34dea", kill_on_drop: false }`
[INFO] [stdout] 8f4cbcf7567bb5a10f59de9a83ef1c588fc9654194a67f5caaab1ca4dcc34dea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2db5eb03b9e60e3e7478a1dbcdfb35aefdd76d45b6669a9bc81b583670be540e
[INFO] running `Command { std: "docker" "start" "-a" "2db5eb03b9e60e3e7478a1dbcdfb35aefdd76d45b6669a9bc81b583670be540e", kill_on_drop: false }`
[INFO] [stderr]    Compiling pow-captcha-core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "2db5eb03b9e60e3e7478a1dbcdfb35aefdd76d45b6669a9bc81b583670be540e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db5eb03b9e60e3e7478a1dbcdfb35aefdd76d45b6669a9bc81b583670be540e", kill_on_drop: false }`
[INFO] [stdout] 2db5eb03b9e60e3e7478a1dbcdfb35aefdd76d45b6669a9bc81b583670be540e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] fb54ab61f1d5d54f0815748922eb51fc2b30ab90252fd493ee700b2206ee3f8a
[INFO] running `Command { std: "docker" "start" "-a" "fb54ab61f1d5d54f0815748922eb51fc2b30ab90252fd493ee700b2206ee3f8a", 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/pow_captcha_core-2da94986c0bd8c26)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::it_generates_challenge ... ok
[INFO] [stdout] test tests::it_rejects_an_incorrect_solution ... ok
[INFO] [stdout] test tests::it_uses_default_difficulty ... ok
[INFO] [stdout] test tests::it_verifies_a_correct_solution ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.69s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pow_captcha_core
[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" "fb54ab61f1d5d54f0815748922eb51fc2b30ab90252fd493ee700b2206ee3f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb54ab61f1d5d54f0815748922eb51fc2b30ab90252fd493ee700b2206ee3f8a", kill_on_drop: false }`
[INFO] [stdout] fb54ab61f1d5d54f0815748922eb51fc2b30ab90252fd493ee700b2206ee3f8a