[INFO] fetching crate find-real-roots-of-polynomial 0.2.3...
[INFO] testing find-real-roots-of-polynomial-0.2.3 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate find-real-roots-of-polynomial 0.2.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate find-real-roots-of-polynomial 0.2.3
[INFO] finished tweaking crates.io crate find-real-roots-of-polynomial 0.2.3
[INFO] tweaked toml for crates.io crate find-real-roots-of-polynomial 0.2.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate find-real-roots-of-polynomial 0.2.3 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 728817105a8eb0d603981b51103cdc61a92c2ada4b8ded620a2545ab816528f0
[INFO] running `Command { std: "docker" "start" "-a" "728817105a8eb0d603981b51103cdc61a92c2ada4b8ded620a2545ab816528f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "728817105a8eb0d603981b51103cdc61a92c2ada4b8ded620a2545ab816528f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "728817105a8eb0d603981b51103cdc61a92c2ada4b8ded620a2545ab816528f0", kill_on_drop: false }`
[INFO] [stdout] 728817105a8eb0d603981b51103cdc61a92c2ada4b8ded620a2545ab816528f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] df1d9ea1409db9255c55c8f070ac2686930fd55f38435b0c6d71475432600e1f
[INFO] running `Command { std: "docker" "start" "-a" "df1d9ea1409db9255c55c8f070ac2686930fd55f38435b0c6d71475432600e1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ring-algorithm v0.8.0
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling auto-impl-ops v0.2.1
[INFO] [stderr]    Compiling polynomial-ring v0.5.1
[INFO] [stderr]    Compiling find-real-roots-of-polynomial v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.44s
[INFO] running `Command { std: "docker" "inspect" "df1d9ea1409db9255c55c8f070ac2686930fd55f38435b0c6d71475432600e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df1d9ea1409db9255c55c8f070ac2686930fd55f38435b0c6d71475432600e1f", kill_on_drop: false }`
[INFO] [stdout] df1d9ea1409db9255c55c8f070ac2686930fd55f38435b0c6d71475432600e1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ebf29e37d1fbebd3968e5e6b74a213d157e349554b62a03e08c1be77144e64a6
[INFO] running `Command { std: "docker" "start" "-a" "ebf29e37d1fbebd3968e5e6b74a213d157e349554b62a03e08c1be77144e64a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling find-real-roots-of-polynomial v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "ebf29e37d1fbebd3968e5e6b74a213d157e349554b62a03e08c1be77144e64a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf29e37d1fbebd3968e5e6b74a213d157e349554b62a03e08c1be77144e64a6", kill_on_drop: false }`
[INFO] [stdout] ebf29e37d1fbebd3968e5e6b74a213d157e349554b62a03e08c1be77144e64a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c8105a24aa99c9c1c7968d9799c38b51c061c3d87014ea052d5fcb08d9874a0b
[INFO] running `Command { std: "docker" "start" "-a" "c8105a24aa99c9c1c7968d9799c38b51c061c3d87014ea052d5fcb08d9874a0b", 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/find_real_roots_of_polynomial-94c84b79d2fd976b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test random_test ... ok
[INFO] [stdout] test a ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 31.20s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests find_real_roots_of_polynomial
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - bisection_method (line 60) ... ok
[INFO] [stdout] test src/lib.rs - SturmChain<K>::has_imaginary_root (line 289) ... ok
[INFO] [stdout] test src/lib.rs - SturmChain<K>::strum_method (line 197) ... ok
[INFO] [stdout] test src/lib.rs - SturmChain<K>::find_all_real_roots (line 246) ... ok
[INFO] [stdout] test src/lib.rs - SturmChain (line 102) ... ok
[INFO] [stdout] test src/lib.rs - (line 3) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.23s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c8105a24aa99c9c1c7968d9799c38b51c061c3d87014ea052d5fcb08d9874a0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8105a24aa99c9c1c7968d9799c38b51c061c3d87014ea052d5fcb08d9874a0b", kill_on_drop: false }`
[INFO] [stdout] c8105a24aa99c9c1c7968d9799c38b51c061c3d87014ea052d5fcb08d9874a0b