[INFO] fetching crate find-real-roots-of-polynomial 0.1.0...
[INFO] testing find-real-roots-of-polynomial-0.1.0 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate find-real-roots-of-polynomial 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate find-real-roots-of-polynomial 0.1.0 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate find-real-roots-of-polynomial 0.1.0
[INFO] finished tweaking crates.io crate find-real-roots-of-polynomial 0.1.0
[INFO] tweaked toml for crates.io crate find-real-roots-of-polynomial 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ring-algorithm v0.3.0
[INFO] [stderr]   Downloaded polynomial-ring v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 220f737fce15b51677662792d9bbb048ebdb11b0d3e28ce6c5a11bd96291f5e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "220f737fce15b51677662792d9bbb048ebdb11b0d3e28ce6c5a11bd96291f5e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "220f737fce15b51677662792d9bbb048ebdb11b0d3e28ce6c5a11bd96291f5e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "220f737fce15b51677662792d9bbb048ebdb11b0d3e28ce6c5a11bd96291f5e4", kill_on_drop: false }`
[INFO] [stdout] 220f737fce15b51677662792d9bbb048ebdb11b0d3e28ce6c5a11bd96291f5e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0e58727890823db44ffb24779d7571bc9a8ff13b759689d9f98437c710cb0d82
[INFO] running `Command { std: "docker" "start" "-a" "0e58727890823db44ffb24779d7571bc9a8ff13b759689d9f98437c710cb0d82", 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 v0.4.0
[INFO] [stderr]    Compiling ring-algorithm v0.3.0
[INFO] [stderr]    Compiling polynomial-ring v0.3.5
[INFO] [stderr]    Compiling find-real-roots-of-polynomial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.65s
[INFO] running `Command { std: "docker" "inspect" "0e58727890823db44ffb24779d7571bc9a8ff13b759689d9f98437c710cb0d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e58727890823db44ffb24779d7571bc9a8ff13b759689d9f98437c710cb0d82", kill_on_drop: false }`
[INFO] [stdout] 0e58727890823db44ffb24779d7571bc9a8ff13b759689d9f98437c710cb0d82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3274ce712c142cf1a49c4887c5a84639ccd6e737bdb5275721ca4961a3acded
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d3274ce712c142cf1a49c4887c5a84639ccd6e737bdb5275721ca4961a3acded", 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 getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling find-real-roots-of-polynomial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.17s
[INFO] running `Command { std: "docker" "inspect" "d3274ce712c142cf1a49c4887c5a84639ccd6e737bdb5275721ca4961a3acded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3274ce712c142cf1a49c4887c5a84639ccd6e737bdb5275721ca4961a3acded", kill_on_drop: false }`
[INFO] [stdout] d3274ce712c142cf1a49c4887c5a84639ccd6e737bdb5275721ca4961a3acded
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 533c0543d95c300637e22c74640c266f36b126ea5a98ab73870e5e06fb76ebe4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "533c0543d95c300637e22c74640c266f36b126ea5a98ab73870e5e06fb76ebe4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/find_real_roots_of_polynomial-63438ef127f4104b)
[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 77.73s
[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 (line 102) ... ok
[INFO] [stdout] test src/lib.rs - SturmChain<K>::find_all_real_roots (line 246) ... 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] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.78s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "533c0543d95c300637e22c74640c266f36b126ea5a98ab73870e5e06fb76ebe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "533c0543d95c300637e22c74640c266f36b126ea5a98ab73870e5e06fb76ebe4", kill_on_drop: false }`
[INFO] [stdout] 533c0543d95c300637e22c74640c266f36b126ea5a98ab73870e5e06fb76ebe4