[INFO] fetching crate darling 0.21.3...
[INFO] building darling-0.21.3 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate darling 0.21.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate darling 0.21.3
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate darling 0.21.3
[INFO] tweaked toml for crates.io crate darling 0.21.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate darling 0.21.3 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate darling 0.21.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 066b28d883dc58524d68ccd985ebeef856ee8f95b7c70533064d33f9abe2b645
[INFO] running `Command { std: "docker" "start" "-a" "066b28d883dc58524d68ccd985ebeef856ee8f95b7c70533064d33f9abe2b645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "066b28d883dc58524d68ccd985ebeef856ee8f95b7c70533064d33f9abe2b645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "066b28d883dc58524d68ccd985ebeef856ee8f95b7c70533064d33f9abe2b645", kill_on_drop: false }`
[INFO] [stdout] 066b28d883dc58524d68ccd985ebeef856ee8f95b7c70533064d33f9abe2b645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ff5eb20b70b4758d10984c996c51b25126ecd43926773debc6c9618322dc7ea
[INFO] running `Command { std: "docker" "start" "-a" "0ff5eb20b70b4758d10984c996c51b25126ecd43926773debc6c9618322dc7ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.56
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling darling v0.21.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.91s
[INFO] running `Command { std: "docker" "inspect" "0ff5eb20b70b4758d10984c996c51b25126ecd43926773debc6c9618322dc7ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ff5eb20b70b4758d10984c996c51b25126ecd43926773debc6c9618322dc7ea", kill_on_drop: false }`
[INFO] [stdout] 0ff5eb20b70b4758d10984c996c51b25126ecd43926773debc6c9618322dc7ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ac9e9d0e7af778dd640f8cc36d92cea8772fc6647ea3a332c612b105ad18fc8
[INFO] running `Command { std: "docker" "start" "-a" "4ac9e9d0e7af778dd640f8cc36d92cea8772fc6647ea3a332c612b105ad18fc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling darling v0.21.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `darling` (test "flatten")
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6/bin/rustc --crate-name flatten --edition=2021 tests/flatten.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --warn=unexpected_cfgs --check-cfg 'cfg(compiletests)' --test --cfg 'feature="default"' --cfg 'feature="suggestions"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "diagnostics", "serde", "suggestions"))' -C metadata=8b550e816c3b41d7 -C extra-filename=-b2961ef6841ec53d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling=/opt/rustwide/target/debug/deps/libdarling-c67d652cf12e5594.rlib --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-31ecfd9807a14a0f.rlib --extern darling_macro=/opt/rustwide/target/debug/deps/libdarling_macro-05e6f2a6483b36df.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5142e8b361748109.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-b874a1efe6fa3682.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-12c0ca1b23c0359c.rlib --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4ac9e9d0e7af778dd640f8cc36d92cea8772fc6647ea3a332c612b105ad18fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ac9e9d0e7af778dd640f8cc36d92cea8772fc6647ea3a332c612b105ad18fc8", kill_on_drop: false }`
[INFO] [stdout] 4ac9e9d0e7af778dd640f8cc36d92cea8772fc6647ea3a332c612b105ad18fc8