[INFO] fetching crate flexi_logger 0.18.1...
[INFO] testing flexi_logger-0.18.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate flexi_logger 0.18.1 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate flexi_logger 0.18.1 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 flexi_logger 0.18.1
[INFO] finished tweaking crates.io crate flexi_logger 0.18.1
[INFO] tweaked toml for crates.io crate flexi_logger 0.18.1 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate crates.io crate flexi_logger 0.18.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 883023d7899db6f1e56fe4a9d4c50e949ade2b37982ec548e78f4e394b94a33a
[INFO] running `Command { std: "docker" "start" "-a" "883023d7899db6f1e56fe4a9d4c50e949ade2b37982ec548e78f4e394b94a33a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "883023d7899db6f1e56fe4a9d4c50e949ade2b37982ec548e78f4e394b94a33a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883023d7899db6f1e56fe4a9d4c50e949ade2b37982ec548e78f4e394b94a33a", kill_on_drop: false }`
[INFO] [stdout] 883023d7899db6f1e56fe4a9d4c50e949ade2b37982ec548e78f4e394b94a33a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] ba4217c02adaf950f4c114e99a8c8b755383d854420e1243a39aff25dd6fa377
[INFO] running `Command { std: "docker" "start" "-a" "ba4217c02adaf950f4c114e99a8c8b755383d854420e1243a39aff25dd6fa377", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling flexi_logger v0.18.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.03s
[INFO] running `Command { std: "docker" "inspect" "ba4217c02adaf950f4c114e99a8c8b755383d854420e1243a39aff25dd6fa377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4217c02adaf950f4c114e99a8c8b755383d854420e1243a39aff25dd6fa377", kill_on_drop: false }`
[INFO] [stdout] ba4217c02adaf950f4c114e99a8c8b755383d854420e1243a39aff25dd6fa377
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 6a02ef38d3073bf616cd558af6d5ba51a065087f38efa0241c5e0e1ac4e633c7
[INFO] running `Command { std: "docker" "start" "-a" "6a02ef38d3073bf616cd558af6d5ba51a065087f38efa0241c5e0e1ac4e633c7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling semver-parser v0.9.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling version-sync v0.9.2
[INFO] [stderr]    Compiling flexi_logger v0.18.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `flexi_logger`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name flexi_logger --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="atty"' --cfg 'feature="colors"' --cfg 'feature="default"' --cfg 'feature="lazy_static"' --cfg 'feature="regex"' --cfg 'feature="textfilter"' --cfg 'feature="yansi"' -C metadata=83ffce6f5dcf2c53 -C extra-filename=-83ffce6f5dcf2c53 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern atty=/opt/rustwide/target/debug/deps/libatty-fc0a70bd1a506baa.rlib --extern chrono=/opt/rustwide/target/debug/deps/libchrono-3dc0a64842f4032f.rlib --extern glob=/opt/rustwide/target/debug/deps/libglob-c2143d50ee53b852.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-7914ddd45155fdc8.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-27bd9e77ed307a48.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-fc4983597d4e59a8.so --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-43f848b094621635.rlib --extern version_sync=/opt/rustwide/target/debug/deps/libversion_sync-07bf1ca5fab3b788.rlib --extern yansi=/opt/rustwide/target/debug/deps/libyansi-128fd22866328836.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6a02ef38d3073bf616cd558af6d5ba51a065087f38efa0241c5e0e1ac4e633c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a02ef38d3073bf616cd558af6d5ba51a065087f38efa0241c5e0e1ac4e633c7", kill_on_drop: false }`
[INFO] [stdout] 6a02ef38d3073bf616cd558af6d5ba51a065087f38efa0241c5e0e1ac4e633c7