[INFO] fetching crate monarch-butterfly 0.4.1...
[INFO] building monarch-butterfly-0.4.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate monarch-butterfly 0.4.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate monarch-butterfly 0.4.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate monarch-butterfly 0.4.1
[INFO] tweaked toml for crates.io crate monarch-butterfly 0.4.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate monarch-butterfly 0.4.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate monarch-butterfly 0.4.1 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded transpose v0.2.3
[INFO] [stderr]   Downloaded strength_reduce v0.2.4
[INFO] [stderr]   Downloaded monarch-derive v0.4.1
[INFO] [stderr]   Downloaded num-complex v0.4.6
[INFO] [stderr]   Downloaded primal-check v0.3.4
[INFO] [stderr]   Downloaded libm v0.2.11
[INFO] [stderr]   Downloaded rustfft v6.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33b9ab834c5aed3128bc07dc805bb9779bda49fecdd91653ded39203bd08e31f
[INFO] running `Command { std: "docker" "start" "-a" "33b9ab834c5aed3128bc07dc805bb9779bda49fecdd91653ded39203bd08e31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33b9ab834c5aed3128bc07dc805bb9779bda49fecdd91653ded39203bd08e31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33b9ab834c5aed3128bc07dc805bb9779bda49fecdd91653ded39203bd08e31f", kill_on_drop: false }`
[INFO] [stdout] 33b9ab834c5aed3128bc07dc805bb9779bda49fecdd91653ded39203bd08e31f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7247ccf0ea3deaa6acd10728b9d2d44b7fd8d51bbf6b70751498a3f94145ebad
[INFO] running `Command { std: "docker" "start" "-a" "7247ccf0ea3deaa6acd10728b9d2d44b7fd8d51bbf6b70751498a3f94145ebad", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling monarch-derive v0.4.1
[INFO] [stderr]    Compiling monarch-butterfly v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `monarch-butterfly` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/c7f6aa2869acdbf014d094c6e427e554e160b6db/bin/rustc --crate-name monarch_butterfly --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=870a0f0d61827982 -C extra-filename=-354c2e61e528d4ee --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern monarch_derive=/opt/rustwide/target/debug/deps/libmonarch_derive-c4a039eed539b628.so --extern num_complex=/opt/rustwide/target/debug/deps/libnum_complex-1c08713dd746acc3.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-7c898f40f0121dc5.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "7247ccf0ea3deaa6acd10728b9d2d44b7fd8d51bbf6b70751498a3f94145ebad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7247ccf0ea3deaa6acd10728b9d2d44b7fd8d51bbf6b70751498a3f94145ebad", kill_on_drop: false }`
[INFO] [stdout] 7247ccf0ea3deaa6acd10728b9d2d44b7fd8d51bbf6b70751498a3f94145ebad