[INFO] cloning repository https://github.com/pione30/rust-the-book-ch08-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pione30/rust-the-book-ch08-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpione30%2Frust-the-book-ch08-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpione30%2Frust-the-book-ch08-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ea329af6436b66673e1326a72e9d3a6f6a95624
[INFO] testing pione30/rust-the-book-ch08-exercises against beta-2025-10-28 for beta-1.92-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpione30%2Frust-the-book-ch08-exercises" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pione30/rust-the-book-ch08-exercises
[INFO] finished tweaking git repo https://github.com/pione30/rust-the-book-ch08-exercises
[INFO] tweaked toml for git repo https://github.com/pione30/rust-the-book-ch08-exercises written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pione30/rust-the-book-ch08-exercises 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] crate git repo https://github.com/pione30/rust-the-book-ch08-exercises 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-2025-10-28" "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] 0a6418068f2d29f97eafec3f8c6724108546775f0ad810f48b5e8574089cc923
[INFO] running `Command { std: "docker" "start" "-a" "0a6418068f2d29f97eafec3f8c6724108546775f0ad810f48b5e8574089cc923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a6418068f2d29f97eafec3f8c6724108546775f0ad810f48b5e8574089cc923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a6418068f2d29f97eafec3f8c6724108546775f0ad810f48b5e8574089cc923", kill_on_drop: false }`
[INFO] [stdout] 0a6418068f2d29f97eafec3f8c6724108546775f0ad810f48b5e8574089cc923
[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] 18eb47b5fe5fe5e89e4dd25551769cd875d501feccb84644f097304af209d340
[INFO] running `Command { std: "docker" "start" "-a" "18eb47b5fe5fe5e89e4dd25551769cd875d501feccb84644f097304af209d340", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-the-book-ch08-exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "18eb47b5fe5fe5e89e4dd25551769cd875d501feccb84644f097304af209d340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18eb47b5fe5fe5e89e4dd25551769cd875d501feccb84644f097304af209d340", kill_on_drop: false }`
[INFO] [stdout] 18eb47b5fe5fe5e89e4dd25551769cd875d501feccb84644f097304af209d340
[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] 36de2491fd13fc55365516da9ca89a9d4eeaebb2ea60c61f2ba3a4e2b8ac410e
[INFO] running `Command { std: "docker" "start" "-a" "36de2491fd13fc55365516da9ca89a9d4eeaebb2ea60c61f2ba3a4e2b8ac410e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-the-book-ch08-exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "36de2491fd13fc55365516da9ca89a9d4eeaebb2ea60c61f2ba3a4e2b8ac410e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36de2491fd13fc55365516da9ca89a9d4eeaebb2ea60c61f2ba3a4e2b8ac410e", kill_on_drop: false }`
[INFO] [stdout] 36de2491fd13fc55365516da9ca89a9d4eeaebb2ea60c61f2ba3a4e2b8ac410e
[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] 14581bd2a6da8bf71bcbee21ad571e27b1873e27fea24aa471cf0d80392b71a8
[INFO] running `Command { std: "docker" "start" "-a" "14581bd2a6da8bf71bcbee21ad571e27b1873e27fea24aa471cf0d80392b71a8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_the_book_ch08_exercises-d0fd3440dfdaae7c)
[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" "14581bd2a6da8bf71bcbee21ad571e27b1873e27fea24aa471cf0d80392b71a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14581bd2a6da8bf71bcbee21ad571e27b1873e27fea24aa471cf0d80392b71a8", kill_on_drop: false }`
[INFO] [stdout] 14581bd2a6da8bf71bcbee21ad571e27b1873e27fea24aa471cf0d80392b71a8