[INFO] fetching crate darling 0.13.1...
[INFO] testing darling-0.13.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate darling 0.13.1 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate darling 0.13.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate darling 0.13.1
[INFO] finished tweaking crates.io crate darling 0.13.1
[INFO] tweaked toml for crates.io crate darling 0.13.1 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate darling 0.13.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e61a52b687908313f4c47efef01ce6f506caa8593bd552d7941b99113e753e5
[INFO] running `Command { std: "docker" "start" "-a" "9e61a52b687908313f4c47efef01ce6f506caa8593bd552d7941b99113e753e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e61a52b687908313f4c47efef01ce6f506caa8593bd552d7941b99113e753e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e61a52b687908313f4c47efef01ce6f506caa8593bd552d7941b99113e753e5", kill_on_drop: false }`
[INFO] [stdout] 9e61a52b687908313f4c47efef01ce6f506caa8593bd552d7941b99113e753e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a750fc8f8dad90b5e9d85bf5374b01c906eb147ee8f485ad142bddfd44e0bdb4
[INFO] running `Command { std: "docker" "start" "-a" "a750fc8f8dad90b5e9d85bf5374b01c906eb147ee8f485ad142bddfd44e0bdb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]    Compiling darling v0.13.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.02s
[INFO] running `Command { std: "docker" "inspect" "a750fc8f8dad90b5e9d85bf5374b01c906eb147ee8f485ad142bddfd44e0bdb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a750fc8f8dad90b5e9d85bf5374b01c906eb147ee8f485ad142bddfd44e0bdb4", kill_on_drop: false }`
[INFO] [stdout] a750fc8f8dad90b5e9d85bf5374b01c906eb147ee8f485ad142bddfd44e0bdb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d8fcb8a02d228af5aaa9be4fd7a5d829b26ea9cf3259e25032810321b09d2f0
[INFO] running `Command { std: "docker" "start" "-a" "9d8fcb8a02d228af5aaa9be4fd7a5d829b26ea9cf3259e25032810321b09d2f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling darling v0.13.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name accrue_errors --edition=2018 tests/accrue_errors.rs --error-format=json --json=diagnostic-rendered-ansi,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=b6cd64fe1fb2e1cc -C extra-filename=-b6cd64fe1fb2e1cc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-9678d5de86f42fd6.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-e622f7c482e4994d.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-7f2c876d35e7232d.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b2e89527d4389cc0.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-98fa735ffe8a9e38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-3c4ecf12e29ef995.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" "9d8fcb8a02d228af5aaa9be4fd7a5d829b26ea9cf3259e25032810321b09d2f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d8fcb8a02d228af5aaa9be4fd7a5d829b26ea9cf3259e25032810321b09d2f0", kill_on_drop: false }`
[INFO] [stdout] 9d8fcb8a02d228af5aaa9be4fd7a5d829b26ea9cf3259e25032810321b09d2f0