[INFO] fetching crate qopt 0.19.4...
[INFO] testing qopt-0.19.4 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate qopt 0.19.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate qopt 0.19.4
[INFO] finished tweaking crates.io crate qopt 0.19.4
[INFO] tweaked toml for crates.io crate qopt 0.19.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qopt 0.19.4 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]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding maria-linalg v0.10.0 (available: v1.0.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_distr v0.4.3 (available: v0.5.1)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 6b2a1b0c44d16d44ee474b2f1ece9832b8a229cfa4da7a5c08780b8e55955909
[INFO] running `Command { std: "docker" "start" "-a" "6b2a1b0c44d16d44ee474b2f1ece9832b8a229cfa4da7a5c08780b8e55955909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b2a1b0c44d16d44ee474b2f1ece9832b8a229cfa4da7a5c08780b8e55955909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2a1b0c44d16d44ee474b2f1ece9832b8a229cfa4da7a5c08780b8e55955909", kill_on_drop: false }`
[INFO] [stdout] 6b2a1b0c44d16d44ee474b2f1ece9832b8a229cfa4da7a5c08780b8e55955909
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f62dccc098cc8efe5c7acf70f690a562dee1793ef4f34a3594d7d2725bb2d7d8
[INFO] running `Command { std: "docker" "start" "-a" "f62dccc098cc8efe5c7acf70f690a562dee1793ef4f34a3594d7d2725bb2d7d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling maria-linalg v0.10.0
[INFO] [stderr]    Compiling qopt v0.19.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `error` and `help`
[INFO] [stdout]   --> src/optimizer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     help,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `Command { std: "docker" "inspect" "f62dccc098cc8efe5c7acf70f690a562dee1793ef4f34a3594d7d2725bb2d7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f62dccc098cc8efe5c7acf70f690a562dee1793ef4f34a3594d7d2725bb2d7d8", kill_on_drop: false }`
[INFO] [stdout] f62dccc098cc8efe5c7acf70f690a562dee1793ef4f34a3594d7d2725bb2d7d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 917e2b8cd32be4fc831f717de7604f0d551ef2b13e06063576d4f72eb7a8fb32
[INFO] running `Command { std: "docker" "start" "-a" "917e2b8cd32be4fc831f717de7604f0d551ef2b13e06063576d4f72eb7a8fb32", kill_on_drop: false }`
[INFO] [stderr]    Compiling qopt v0.19.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `error` and `help`
[INFO] [stdout]   --> src/optimizer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     help,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error` and `help`
[INFO] [stdout]   --> src/optimizer.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     help,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "917e2b8cd32be4fc831f717de7604f0d551ef2b13e06063576d4f72eb7a8fb32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "917e2b8cd32be4fc831f717de7604f0d551ef2b13e06063576d4f72eb7a8fb32", kill_on_drop: false }`
[INFO] [stdout] 917e2b8cd32be4fc831f717de7604f0d551ef2b13e06063576d4f72eb7a8fb32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 734d6b48de3a6a2a3b666b133ab16ed88665b85faf1df39216f7cb64a820f4e3
[INFO] running `Command { std: "docker" "start" "-a" "734d6b48de3a6a2a3b666b133ab16ed88665b85faf1df39216f7cb64a820f4e3", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `error` and `help`
[INFO] [stdout] 
[INFO] [stderr]   --> src/optimizer.rs:15:5
[INFO] [stdout] running 2 tests
[INFO] [stderr]    |
[INFO] [stderr] 15 |     error,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 16 |     help,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `qopt` (lib) generated 1 warning (run `cargo fix --lib -p qopt` to apply 1 suggestion)
[INFO] [stderr] warning: `qopt` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/qopt-8d1edfd89d47a5c3)
[INFO] [stderr]    Doc-tests qopt
[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" "734d6b48de3a6a2a3b666b133ab16ed88665b85faf1df39216f7cb64a820f4e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "734d6b48de3a6a2a3b666b133ab16ed88665b85faf1df39216f7cb64a820f4e3", kill_on_drop: false }`
[INFO] [stdout] 734d6b48de3a6a2a3b666b133ab16ed88665b85faf1df39216f7cb64a820f4e3