[INFO] fetching crate ark-nonnative-field 0.3.0...
[INFO] checking ark-nonnative-field-0.3.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[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 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-mnt4-298 v0.3.0
[INFO] [stderr]   Downloaded ark-mnt4-753 v0.3.0
[INFO] [stderr]   Downloaded ark-mnt6-753 v0.3.0
[INFO] [stderr]   Downloaded ark-mnt6-298 v0.3.0
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd426086a128fe5b62675817350b078d778975efddbce7a3c881756284a8c5cc
[INFO] running `Command { std: "docker" "start" "-a" "fd426086a128fe5b62675817350b078d778975efddbce7a3c881756284a8c5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd426086a128fe5b62675817350b078d778975efddbce7a3c881756284a8c5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd426086a128fe5b62675817350b078d778975efddbce7a3c881756284a8c5cc", kill_on_drop: false }`
[INFO] [stdout] fd426086a128fe5b62675817350b078d778975efddbce7a3c881756284a8c5cc
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63fed327a10000cd2844a61bb42f8f29c27fd9b97f0ce6ca0c92f648c8e41b3d
[INFO] running `Command { std: "docker" "start" "-a" "63fed327a10000cd2844a61bb42f8f29c27fd9b97f0ce6ca0c92f648c8e41b3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]     Checking zeroize v1.4.1
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking ark-ff v0.3.0
[INFO] [stderr]     Checking ark-ec v0.3.0
[INFO] [stderr]     Checking ark-relations v0.3.0
[INFO] [stderr]     Checking ark-r1cs-std v0.3.1
[INFO] [stderr]     Checking ark-mnt4-298 v0.3.0
[INFO] [stderr]     Checking ark-mnt4-753 v0.3.0
[INFO] [stderr]     Checking ark-pallas v0.3.0
[INFO] [stderr]     Checking ark-bls12-381 v0.3.0
[INFO] [stderr]     Checking ark-bls12-377 v0.3.0
[INFO] [stderr]     Checking ark-mnt6-298 v0.3.0
[INFO] [stderr]     Checking ark-mnt6-753 v0.3.0
[INFO] [stderr]     Checking ark-nonnative-field v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read benches/bench.rs: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ark-nonnative-field` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "63fed327a10000cd2844a61bb42f8f29c27fd9b97f0ce6ca0c92f648c8e41b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63fed327a10000cd2844a61bb42f8f29c27fd9b97f0ce6ca0c92f648c8e41b3d", kill_on_drop: false }`
[INFO] [stdout] 63fed327a10000cd2844a61bb42f8f29c27fd9b97f0ce6ca0c92f648c8e41b3d