[INFO] fetching crate find-real-roots-of-polynomial 0.2.1...
[INFO] testing find-real-roots-of-polynomial-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate find-real-roots-of-polynomial 0.2.1 into /workspace/builds/worker-65/source
[INFO] validating manifest of crates.io crate find-real-roots-of-polynomial 0.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate find-real-roots-of-polynomial 0.2.1
[INFO] finished tweaking crates.io crate find-real-roots-of-polynomial 0.2.1
[INFO] tweaked toml for crates.io crate find-real-roots-of-polynomial 0.2.1 written to /workspace/builds/worker-65/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1f1e70dec171f0567d661479c0fac9ce4651b5942595167cd87d262a3d06482
[INFO] running `Command { std: "docker" "start" "-a" "e1f1e70dec171f0567d661479c0fac9ce4651b5942595167cd87d262a3d06482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1f1e70dec171f0567d661479c0fac9ce4651b5942595167cd87d262a3d06482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f1e70dec171f0567d661479c0fac9ce4651b5942595167cd87d262a3d06482", kill_on_drop: false }`
[INFO] [stdout] e1f1e70dec171f0567d661479c0fac9ce4651b5942595167cd87d262a3d06482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c892cdf3f9be4542ec072be8c2938dff501dbf48dea8823ed5174d8bed5c556a
[INFO] running `Command { std: "docker" "start" "-a" "c892cdf3f9be4542ec072be8c2938dff501dbf48dea8823ed5174d8bed5c556a", kill_on_drop: false }`
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling ring-algorithm v0.4.0
[INFO] [stderr]    Compiling polynomial-ring v0.4.1
[INFO] [stderr]    Compiling find-real-roots-of-polynomial v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.20s
[INFO] running `Command { std: "docker" "inspect" "c892cdf3f9be4542ec072be8c2938dff501dbf48dea8823ed5174d8bed5c556a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c892cdf3f9be4542ec072be8c2938dff501dbf48dea8823ed5174d8bed5c556a", kill_on_drop: false }`
[INFO] [stdout] c892cdf3f9be4542ec072be8c2938dff501dbf48dea8823ed5174d8bed5c556a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ce651520f7b9f7fbdcc812f2adaafb54b3eef0213ee3bd5777b67e8789e486c
[INFO] running `Command { std: "docker" "start" "-a" "7ce651520f7b9f7fbdcc812f2adaafb54b3eef0213ee3bd5777b67e8789e486c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling find-real-roots-of-polynomial v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.01s
[INFO] running `Command { std: "docker" "inspect" "7ce651520f7b9f7fbdcc812f2adaafb54b3eef0213ee3bd5777b67e8789e486c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ce651520f7b9f7fbdcc812f2adaafb54b3eef0213ee3bd5777b67e8789e486c", kill_on_drop: false }`
[INFO] [stdout] 7ce651520f7b9f7fbdcc812f2adaafb54b3eef0213ee3bd5777b67e8789e486c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8165f766c1a1e90972b49b1dab67dc24c72b1aa27e7c3f113475be2520dbf01e
[INFO] running `Command { std: "docker" "start" "-a" "8165f766c1a1e90972b49b1dab67dc24c72b1aa27e7c3f113475be2520dbf01e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/find_real_roots_of_polynomial-9893a12be0d3c5de)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test random_test ... ok
[INFO] [stdout] test a has been running for over 60 seconds
[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 98.50s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests find-real-roots-of-polynomial
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - bisection_method (line 60) ... ok
[INFO] [stdout] test src/lib.rs - SturmChain<K>::strum_method (line 197) ... ok
[INFO] [stdout] test src/lib.rs - (line 3) ... 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] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.48s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8165f766c1a1e90972b49b1dab67dc24c72b1aa27e7c3f113475be2520dbf01e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8165f766c1a1e90972b49b1dab67dc24c72b1aa27e7c3f113475be2520dbf01e", kill_on_drop: false }`
[INFO] [stdout] 8165f766c1a1e90972b49b1dab67dc24c72b1aa27e7c3f113475be2520dbf01e