[INFO] fetching crate ark-nonnative-field 0.3.0...
[INFO] testing ark-nonnative-field-0.3.0 against master#6c20ab744b0f82646d90ce9d25894823abc9c669 for pr-99093
[INFO] extracting crate ark-nonnative-field 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ark-nonnative-field 0.3.0 on toolchain 6c20ab744b0f82646d90ce9d25894823abc9c669
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-nonnative-field 0.3.0
[INFO] finished tweaking crates.io crate ark-nonnative-field 0.3.0
[INFO] tweaked toml for crates.io crate ark-nonnative-field 0.3.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-relations v0.3.0
[INFO] [stderr]   Downloaded ark-pallas v0.3.0
[INFO] [stderr]   Downloaded ark-mnt4-753 v0.3.0
[INFO] [stderr]   Downloaded ark-mnt6-298 v0.3.0
[INFO] [stderr]   Downloaded ark-mnt4-298 v0.3.0
[INFO] [stderr]   Downloaded ark-ff v0.3.0
[INFO] [stderr]   Downloaded ark-bls12-381 v0.3.0
[INFO] [stderr]   Downloaded ark-bls12-377 v0.3.0
[INFO] [stderr]   Downloaded ark-serialize v0.3.0
[INFO] [stderr]   Downloaded zeroize v1.5.6
[INFO] [stderr]   Downloaded ark-std v0.3.0
[INFO] [stderr]   Downloaded ark-ff-asm v0.3.0
[INFO] [stderr]   Downloaded ark-mnt6-753 v0.3.0
[INFO] [stderr]   Downloaded ark-ff-macros v0.3.0
[INFO] [stderr]   Downloaded ark-ec v0.3.0
[INFO] [stderr]   Downloaded ark-r1cs-std v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b0c20f191de456fa065a2af78e3ddc3318427bb8b548d8db19b1e363978e477
[INFO] running `Command { std: "docker" "start" "-a" "4b0c20f191de456fa065a2af78e3ddc3318427bb8b548d8db19b1e363978e477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b0c20f191de456fa065a2af78e3ddc3318427bb8b548d8db19b1e363978e477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0c20f191de456fa065a2af78e3ddc3318427bb8b548d8db19b1e363978e477", kill_on_drop: false }`
[INFO] [stdout] 4b0c20f191de456fa065a2af78e3ddc3318427bb8b548d8db19b1e363978e477
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a31f95cddcc29b5fda23265f627f88ba9465514437a51b8e991dc29a8df33d94
[INFO] running `Command { std: "docker" "start" "-a" "a31f95cddcc29b5fda23265f627f88ba9465514437a51b8e991dc29a8df33d94", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling ucd-trie v0.1.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling tracing-core v0.1.28
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling ark-std v0.3.0
[INFO] [stderr]    Compiling ark-ff v0.3.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling ark-serialize v0.3.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zeroize_derive v1.3.2
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling zeroize v1.5.6
[INFO] [stderr]    Compiling tracing v0.1.35
[INFO] [stderr]    Compiling ark-relations v0.3.0
[INFO] [stderr]    Compiling ark-ec v0.3.0
[INFO] [stderr]    Compiling ark-r1cs-std v0.3.1
[INFO] [stderr]    Compiling ark-nonnative-field v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.70s
[INFO] running `Command { std: "docker" "inspect" "a31f95cddcc29b5fda23265f627f88ba9465514437a51b8e991dc29a8df33d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a31f95cddcc29b5fda23265f627f88ba9465514437a51b8e991dc29a8df33d94", kill_on_drop: false }`
[INFO] [stdout] a31f95cddcc29b5fda23265f627f88ba9465514437a51b8e991dc29a8df33d94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ae4dede6b449257aa30f1b00f50c34e54e71d2a071003cc6d78f90c29756ff2
[INFO] running `Command { std: "docker" "start" "-a" "2ae4dede6b449257aa30f1b00f50c34e54e71d2a071003cc6d78f90c29756ff2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling ucd-trie v0.1.4
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling tracing-core v0.1.28
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling ark-std v0.3.0
[INFO] [stderr]    Compiling ark-ff v0.3.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling ark-serialize v0.3.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zeroize_derive v1.3.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling zeroize v1.5.6
[INFO] [stderr]    Compiling tracing v0.1.35
[INFO] [stderr]    Compiling ark-ec v0.3.0
[INFO] [stderr]    Compiling ark-relations v0.3.0
[INFO] [stderr]    Compiling ark-mnt4-298 v0.3.0
[INFO] [stderr]    Compiling ark-r1cs-std v0.3.1
[INFO] [stderr]    Compiling ark-mnt4-753 v0.3.0
[INFO] [stderr]    Compiling ark-bls12-377 v0.3.0
[INFO] [stderr]    Compiling ark-bls12-381 v0.3.0
[INFO] [stderr]    Compiling ark-pallas v0.3.0
[INFO] [stderr]    Compiling ark-mnt6-298 v0.3.0
[INFO] [stderr]    Compiling ark-mnt6-753 v0.3.0
[INFO] [stderr]    Compiling ark-nonnative-field v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `ark-nonnative-field`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name arithmetic_tests --edition=2018 tests/arithmetic_tests.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C opt-level=3 -C lto=thin -C debuginfo=2 -C debug-assertions=on --test --cfg 'feature="default"' -C metadata=b148a2fda29aaff9 -C extra-filename=-b148a2fda29aaff9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ark_bls12_377=/opt/rustwide/target/debug/deps/libark_bls12_377-7629c58b460beea7.rlib --extern ark_bls12_381=/opt/rustwide/target/debug/deps/libark_bls12_381-11cf66f259b1d761.rlib --extern ark_ec=/opt/rustwide/target/debug/deps/libark_ec-6bdb26e4cc3e6101.rlib --extern ark_ff=/opt/rustwide/target/debug/deps/libark_ff-7d4fb78eb50808d5.rlib --extern ark_mnt4_298=/opt/rustwide/target/debug/deps/libark_mnt4_298-6a104c9df3214563.rlib --extern ark_mnt4_753=/opt/rustwide/target/debug/deps/libark_mnt4_753-b83033a4ece7fb60.rlib --extern ark_mnt6_298=/opt/rustwide/target/debug/deps/libark_mnt6_298-b26140265da87d66.rlib --extern ark_mnt6_753=/opt/rustwide/target/debug/deps/libark_mnt6_753-e3012dd3c03a5b50.rlib --extern ark_nonnative_field=/opt/rustwide/target/debug/deps/libark_nonnative_field-e2dd36d8f190daa0.rlib --extern ark_pallas=/opt/rustwide/target/debug/deps/libark_pallas-1557f1167cd7791d.rlib --extern ark_r1cs_std=/opt/rustwide/target/debug/deps/libark_r1cs_std-f6fb3baebc274145.rlib --extern ark_relations=/opt/rustwide/target/debug/deps/libark_relations-f1d742a350c3f68f.rlib --extern ark_std=/opt/rustwide/target/debug/deps/libark_std-095ab8a0d882d7d5.rlib --extern derivative=/opt/rustwide/target/debug/deps/libderivative-bde6da288ebd9db7.so --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-9c03e843e2153718.rlib --extern num_integer=/opt/rustwide/target/debug/deps/libnum_integer-c4a03a31e69cb095.rlib --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-01b0d9928dec3adb.rlib --extern paste=/opt/rustwide/target/debug/deps/libpaste-e09ef583829d5834.so --extern tracing=/opt/rustwide/target/debug/deps/libtracing-a609087552692d37.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" "2ae4dede6b449257aa30f1b00f50c34e54e71d2a071003cc6d78f90c29756ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ae4dede6b449257aa30f1b00f50c34e54e71d2a071003cc6d78f90c29756ff2", kill_on_drop: false }`
[INFO] [stdout] 2ae4dede6b449257aa30f1b00f50c34e54e71d2a071003cc6d78f90c29756ff2