[INFO] fetching crate log_err 1.1.1...
[INFO] testing log_err-1.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate log_err 1.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate log_err 1.1.1 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 log_err 1.1.1
[INFO] finished tweaking crates.io crate log_err 1.1.1
[INFO] tweaked toml for crates.io crate log_err 1.1.1 written to /workspace/builds/worker-5/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] 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 58d6dfa83f31d7891c96c5dcca081be48ec3124f16ae85388042bd1eb1c95b9e
[INFO] running `Command { std: "docker" "start" "-a" "58d6dfa83f31d7891c96c5dcca081be48ec3124f16ae85388042bd1eb1c95b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58d6dfa83f31d7891c96c5dcca081be48ec3124f16ae85388042bd1eb1c95b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58d6dfa83f31d7891c96c5dcca081be48ec3124f16ae85388042bd1eb1c95b9e", kill_on_drop: false }`
[INFO] [stdout] 58d6dfa83f31d7891c96c5dcca081be48ec3124f16ae85388042bd1eb1c95b9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 92f6a4917c7b554e4c2dda8dd6223bde22855ab2b9b1ee90fb564011e94a019f
[INFO] running `Command { std: "docker" "start" "-a" "92f6a4917c7b554e4c2dda8dd6223bde22855ab2b9b1ee90fb564011e94a019f", kill_on_drop: false }`
[INFO] [stderr]    Compiling log_err v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "92f6a4917c7b554e4c2dda8dd6223bde22855ab2b9b1ee90fb564011e94a019f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92f6a4917c7b554e4c2dda8dd6223bde22855ab2b9b1ee90fb564011e94a019f", kill_on_drop: false }`
[INFO] [stdout] 92f6a4917c7b554e4c2dda8dd6223bde22855ab2b9b1ee90fb564011e94a019f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 17a80d44c689c9a907acba38099092e4be8562b83d2f6bf013667a5eea012cab
[INFO] running `Command { std: "docker" "start" "-a" "17a80d44c689c9a907acba38099092e4be8562b83d2f6bf013667a5eea012cab", kill_on_drop: false }`
[INFO] [stderr]    Compiling simplelog v0.10.0
[INFO] [stderr]    Compiling log_err v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "17a80d44c689c9a907acba38099092e4be8562b83d2f6bf013667a5eea012cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17a80d44c689c9a907acba38099092e4be8562b83d2f6bf013667a5eea012cab", kill_on_drop: false }`
[INFO] [stdout] 17a80d44c689c9a907acba38099092e4be8562b83d2f6bf013667a5eea012cab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 0ffe0a14203e7c937162a279b153733311f2b89ef83440bf44b5fd845a8b899f
[INFO] running `Command { std: "docker" "start" "-a" "0ffe0a14203e7c937162a279b153733311f2b89ef83440bf44b5fd845a8b899f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/log_err-87dd962a8336e5a4)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr] 01:45:04 [ERROR] called `Result::unwrap()` on an `Err` value: "a wild error has appeared!"
[INFO] [stderr] 01:45:04 [ERROR] called `Option::unwrap()` on a `None` value
[INFO] [stderr] 01:45:04 [ERROR] A wild error SHOULD appear
[INFO] [stdout] test test::test_log_unwrap - should panic ... ok
[INFO] [stdout] test test::test_option_log_unwrap - should panic ... ok
[INFO] [stdout] test test::test_option_log_expect - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests log_err
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] test src/lib.rs - (line 8) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0ffe0a14203e7c937162a279b153733311f2b89ef83440bf44b5fd845a8b899f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ffe0a14203e7c937162a279b153733311f2b89ef83440bf44b5fd845a8b899f", kill_on_drop: false }`
[INFO] [stdout] 0ffe0a14203e7c937162a279b153733311f2b89ef83440bf44b5fd845a8b899f