[INFO] fetching crate darling 0.13.4...
[INFO] testing darling-0.13.4 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate darling 0.13.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate darling 0.13.4 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate darling 0.13.4
[INFO] finished tweaking crates.io crate darling 0.13.4
[INFO] tweaked toml for crates.io crate darling 0.13.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate darling 0.13.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 701ad6deb1d191a5d0819bc76c5291a6f075f2d02bcec9d0b020853417ecb49e
[INFO] running `Command { std: "docker" "start" "-a" "701ad6deb1d191a5d0819bc76c5291a6f075f2d02bcec9d0b020853417ecb49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "701ad6deb1d191a5d0819bc76c5291a6f075f2d02bcec9d0b020853417ecb49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "701ad6deb1d191a5d0819bc76c5291a6f075f2d02bcec9d0b020853417ecb49e", kill_on_drop: false }`
[INFO] [stdout] 701ad6deb1d191a5d0819bc76c5291a6f075f2d02bcec9d0b020853417ecb49e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e9491751f42963c91da30a3cbc30fdd85f560dc58df27f08822b66ed4267dadd
[INFO] running `Command { std: "docker" "start" "-a" "e9491751f42963c91da30a3cbc30fdd85f560dc58df27f08822b66ed4267dadd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.42s
[INFO] running `Command { std: "docker" "inspect" "e9491751f42963c91da30a3cbc30fdd85f560dc58df27f08822b66ed4267dadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9491751f42963c91da30a3cbc30fdd85f560dc58df27f08822b66ed4267dadd", kill_on_drop: false }`
[INFO] [stdout] e9491751f42963c91da30a3cbc30fdd85f560dc58df27f08822b66ed4267dadd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f76a21c8f929dab4d357cf84b0b725b41c334533dee46fac138d51b967c01e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f76a21c8f929dab4d357cf84b0b725b41c334533dee46fac138d51b967c01e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling darling v0.13.4 (/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 hash_map --edition=2018 tests/hash_map.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=c704e457554d7419 -C extra-filename=-c704e457554d7419 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name consume_fields --edition=2018 examples/consume_fields.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=7f5e65de7abafcb4 -C extra-filename=-7f5e65de7abafcb4 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name newtype --edition=2018 tests/newtype.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=652972c53c14f74c -C extra-filename=-652972c53c14f74c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name supports --edition=2018 tests/supports.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=595aef1b805b268a -C extra-filename=-595aef1b805b268a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name from_generics --edition=2018 tests/from_generics.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=52efada68bcd8378 -C extra-filename=-52efada68bcd8378 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name split_declaration --edition=2018 tests/split_declaration.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=0db273ba217039b2 -C extra-filename=-0db273ba217039b2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name from_variant --edition=2018 tests/from_variant.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=d2668dcc63e35436 -C extra-filename=-d2668dcc63e35436 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name defaults --edition=2018 tests/defaults.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=57060b5b5525ccc7 -C extra-filename=-57060b5b5525ccc7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name automatic_bounds --edition=2018 examples/automatic_bounds.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=c45373dfb9165ece -C extra-filename=-c45373dfb9165ece --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `darling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name skip --edition=2018 tests/skip.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="suggestions"' -C metadata=4200c1f4b5304128 -C extra-filename=-4200c1f4b5304128 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-aa3f88e3ef0c9f45.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-f1488931b42246d3.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-9d26a2990741cb27.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-99e494321b9801a4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-14520ee950573b38.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-a49561b33827136b.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "6f76a21c8f929dab4d357cf84b0b725b41c334533dee46fac138d51b967c01e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f76a21c8f929dab4d357cf84b0b725b41c334533dee46fac138d51b967c01e1", kill_on_drop: false }`
[INFO] [stdout] 6f76a21c8f929dab4d357cf84b0b725b41c334533dee46fac138d51b967c01e1