[INFO] fetching crate simple_bpm 0.2.1...
[INFO] testing simple_bpm-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate simple_bpm 0.2.1 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate simple_bpm 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple_bpm 0.2.1
[INFO] finished tweaking crates.io crate simple_bpm 0.2.1
[INFO] tweaked toml for crates.io crate simple_bpm 0.2.1 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62b6ab65dabeeb62a318d25cb2e48dddb90299c49f0443118b16b423fdddd0b0
[INFO] running `Command { std: "docker" "start" "-a" "62b6ab65dabeeb62a318d25cb2e48dddb90299c49f0443118b16b423fdddd0b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62b6ab65dabeeb62a318d25cb2e48dddb90299c49f0443118b16b423fdddd0b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62b6ab65dabeeb62a318d25cb2e48dddb90299c49f0443118b16b423fdddd0b0", kill_on_drop: false }`
[INFO] [stdout] 62b6ab65dabeeb62a318d25cb2e48dddb90299c49f0443118b16b423fdddd0b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da2367b07f6a13f27588d6e3ba0607492ccffbd3c75f1cc0a47f29ee4cfa07bb
[INFO] running `Command { std: "docker" "start" "-a" "da2367b07f6a13f27588d6e3ba0607492ccffbd3c75f1cc0a47f29ee4cfa07bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling simple_bpm v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `Command { std: "docker" "inspect" "da2367b07f6a13f27588d6e3ba0607492ccffbd3c75f1cc0a47f29ee4cfa07bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da2367b07f6a13f27588d6e3ba0607492ccffbd3c75f1cc0a47f29ee4cfa07bb", kill_on_drop: false }`
[INFO] [stdout] da2367b07f6a13f27588d6e3ba0607492ccffbd3c75f1cc0a47f29ee4cfa07bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4141f29ea95c76390330c89e5c068c65145fd1d85e1e13abda365d2e6db1d933
[INFO] running `Command { std: "docker" "start" "-a" "4141f29ea95c76390330c89e5c068c65145fd1d85e1e13abda365d2e6db1d933", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
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[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ryu v1.0.5
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[INFO] [stderr]    Compiling serde_derive v1.0.130
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[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling csv-core v0.1.10
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[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling hodges v0.1.0
[INFO] [stderr]    Compiling simple_bpm v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> examples/optimise.rs:47:15
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mse = (total_err_sqs / pretrials as f32);
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 22.19s
[INFO] running `Command { std: "docker" "inspect" "4141f29ea95c76390330c89e5c068c65145fd1d85e1e13abda365d2e6db1d933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4141f29ea95c76390330c89e5c068c65145fd1d85e1e13abda365d2e6db1d933", kill_on_drop: false }`
[INFO] [stdout] 4141f29ea95c76390330c89e5c068c65145fd1d85e1e13abda365d2e6db1d933
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 381b971984b1371444a49421348cafdbe4ef0a5cd2b738c1966c4b2ea56252a5
[INFO] running `Command { std: "docker" "start" "-a" "381b971984b1371444a49421348cafdbe4ef0a5cd2b738c1966c4b2ea56252a5", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> examples/optimise.rs:47:15
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mse = (total_err_sqs / pretrials as f32);
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_bpm` (example "optimise") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_bpm-d6311a545f405576)
[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] [stderr]    Doc-tests simple_bpm
[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" "381b971984b1371444a49421348cafdbe4ef0a5cd2b738c1966c4b2ea56252a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381b971984b1371444a49421348cafdbe4ef0a5cd2b738c1966c4b2ea56252a5", kill_on_drop: false }`
[INFO] [stdout] 381b971984b1371444a49421348cafdbe4ef0a5cd2b738c1966c4b2ea56252a5