[INFO] fetching crate rants 0.5.0...
[INFO] testing rants-0.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rants 0.5.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rants 0.5.0 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 rants 0.5.0
[INFO] finished tweaking crates.io crate rants 0.5.0
[INFO] tweaked toml for crates.io crate rants 0.5.0 written to /workspace/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 1583ffa004adea4e36c5dc32959a7682ce34f4ab7028ae6c1a994ea227d54630
[INFO] running `Command { std: "docker" "start" "-a" "1583ffa004adea4e36c5dc32959a7682ce34f4ab7028ae6c1a994ea227d54630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1583ffa004adea4e36c5dc32959a7682ce34f4ab7028ae6c1a994ea227d54630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1583ffa004adea4e36c5dc32959a7682ce34f4ab7028ae6c1a994ea227d54630", kill_on_drop: false }`
[INFO] [stdout] 1583ffa004adea4e36c5dc32959a7682ce34f4ab7028ae6c1a994ea227d54630
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 694733c0d24d74d0f60a0840a36fa083c414dc183f8dd23591c2b2dfb28d8d3e
[INFO] running `Command { std: "docker" "start" "-a" "694733c0d24d74d0f60a0840a36fa083c414dc183f8dd23591c2b2dfb28d8d3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling pin-project v0.4.28
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling rants v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.24s
[INFO] running `Command { std: "docker" "inspect" "694733c0d24d74d0f60a0840a36fa083c414dc183f8dd23591c2b2dfb28d8d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "694733c0d24d74d0f60a0840a36fa083c414dc183f8dd23591c2b2dfb28d8d3e", kill_on_drop: false }`
[INFO] [stdout] 694733c0d24d74d0f60a0840a36fa083c414dc183f8dd23591c2b2dfb28d8d3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] e20101b6ee0509008bc8eb36df2d9e038b2fa831a72827f6eeac7cd1721d6acf
[INFO] running `Command { std: "docker" "start" "-a" "e20101b6ee0509008bc8eb36df2d9e038b2fa831a72827f6eeac7cd1721d6acf", kill_on_drop: false }`
[INFO] [stderr]    Compiling hostname v0.2.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling rants v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `rants`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rants --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="default"' -C metadata=ead7f5dd51b415cb -C extra-filename=-ead7f5dd51b415cb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-a265f3aec633bc55.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-e8611a8d34068601.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-9ef350caead7ff85.rlib --extern hostname=/opt/rustwide/target/debug/deps/libhostname-ab39ab51cc683d96.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-7914ddd45155fdc8.rlib --extern nom=/opt/rustwide/target/debug/deps/libnom-b548303d968738bc.rlib --extern owning_ref=/opt/rustwide/target/debug/deps/libowning_ref-5b211ee349bf8dec.rlib --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-17f202826a2b86a0.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-c3ad7b3394e57de5.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-c84b08c8e6706461.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2f471d9da3ec7c60.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-6b030621745128b5.rlib --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-f35959e4a134c758.rlib --extern uuid=/opt/rustwide/target/debug/deps/libuuid-2f576ed2f42f2c3a.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" "e20101b6ee0509008bc8eb36df2d9e038b2fa831a72827f6eeac7cd1721d6acf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20101b6ee0509008bc8eb36df2d9e038b2fa831a72827f6eeac7cd1721d6acf", kill_on_drop: false }`
[INFO] [stdout] e20101b6ee0509008bc8eb36df2d9e038b2fa831a72827f6eeac7cd1721d6acf