[INFO] fetching crate signifix 0.10.1...
[INFO] testing signifix-0.10.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate signifix 0.10.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate signifix 0.10.1 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 signifix 0.10.1
[INFO] finished tweaking crates.io crate signifix 0.10.1
[INFO] tweaked toml for crates.io crate signifix 0.10.1 written to /workspace/builds/worker-4/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]  Downloading crates ...
[INFO] [stderr]   Downloaded err-derive v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b2d546d96adfcfcd65fcfee51366a19ecb8e4ebb4a01d0c05f8d0cd2efeb52fd
[INFO] running `Command { std: "docker" "start" "-a" "b2d546d96adfcfcd65fcfee51366a19ecb8e4ebb4a01d0c05f8d0cd2efeb52fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2d546d96adfcfcd65fcfee51366a19ecb8e4ebb4a01d0c05f8d0cd2efeb52fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2d546d96adfcfcd65fcfee51366a19ecb8e4ebb4a01d0c05f8d0cd2efeb52fd", kill_on_drop: false }`
[INFO] [stdout] b2d546d96adfcfcd65fcfee51366a19ecb8e4ebb4a01d0c05f8d0cd2efeb52fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 75a13b251c9634b6aa38bbe46a55a409ceeec3e252f8636b880bc5fa7d1cf1b9
[INFO] running `Command { std: "docker" "start" "-a" "75a13b251c9634b6aa38bbe46a55a409ceeec3e252f8636b880bc5fa7d1cf1b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling signifix v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "75a13b251c9634b6aa38bbe46a55a409ceeec3e252f8636b880bc5fa7d1cf1b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75a13b251c9634b6aa38bbe46a55a409ceeec3e252f8636b880bc5fa7d1cf1b9", kill_on_drop: false }`
[INFO] [stdout] 75a13b251c9634b6aa38bbe46a55a409ceeec3e252f8636b880bc5fa7d1cf1b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5e0f39a2bdec305d2853da2b9814d746da259ccb6db98115f52845467c8f1ca3
[INFO] running `Command { std: "docker" "start" "-a" "5e0f39a2bdec305d2853da2b9814d746da259ccb6db98115f52845467c8f1ca3", kill_on_drop: false }`
[INFO] [stderr]    Compiling signifix v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "5e0f39a2bdec305d2853da2b9814d746da259ccb6db98115f52845467c8f1ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e0f39a2bdec305d2853da2b9814d746da259ccb6db98115f52845467c8f1ca3", kill_on_drop: false }`
[INFO] [stdout] 5e0f39a2bdec305d2853da2b9814d746da259ccb6db98115f52845467c8f1ca3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6c922121f0988a69bf7bc1a9224afa1df428c6c72563647ce50ed4a3a32bb380
[INFO] running `Command { std: "docker" "start" "-a" "6c922121f0988a69bf7bc1a9224afa1df428c6c72563647ce50ed4a3a32bb380", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/signifix-e44d29549573cd97)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test binary::tests::factors_to_symbols ... ok
[INFO] [stdout] test binary::tests::fixed_significance ... ok
[INFO] [stdout] test binary::tests::formatting_options ... ok
[INFO] [stdout] test binary::tests::lower_prefix_bound ... ok
[INFO] [stdout] test binary::tests::fp_category_safety ... ok
[INFO] [stdout] test binary::tests::mem_size_of_struct ... ok
[INFO] [stdout] test binary::tests::ord_implementation ... ok
[INFO] [stdout] test binary::tests::upper_prefix_bound ... ok
[INFO] [stdout] test binary::tests::upper_prefix_round ... ok
[INFO] [stdout] test metric::tests::fixed_significance ... ok
[INFO] [stdout] test metric::tests::factors_to_symbols ... ok
[INFO] [stdout] test metric::tests::formatting_options ... ok
[INFO] [stdout] test metric::tests::fp_category_safety ... ok
[INFO] [stdout] test metric::tests::lower_prefix_bound ... ok
[INFO] [stdout] test metric::tests::mem_size_of_struct ... ok
[INFO] [stdout] test metric::tests::ord_implementation ... ok
[INFO] [stdout] test metric::tests::upper_prefix_bound ... ok
[INFO] [stdout] test metric::tests::upper_prefix_round ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests signifix
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 224) ... ok
[INFO] [stdout] test src/lib.rs - (line 200) ... ok
[INFO] [stdout] test src/lib.rs - (line 150) ... ok
[INFO] [stdout] test src/lib.rs - (line 285) ... ok
[INFO] [stdout] test src/lib.rs - (line 245) ... ok
[INFO] [stdout] test src/lib.rs - (line 95) ... ok
[INFO] [stdout] test src/lib.rs - (line 329) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6c922121f0988a69bf7bc1a9224afa1df428c6c72563647ce50ed4a3a32bb380", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c922121f0988a69bf7bc1a9224afa1df428c6c72563647ce50ed4a3a32bb380", kill_on_drop: false }`
[INFO] [stdout] 6c922121f0988a69bf7bc1a9224afa1df428c6c72563647ce50ed4a3a32bb380