[INFO] fetching crate ark-gm17 0.3.0...
[INFO] checking ark-gm17-0.3.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate ark-gm17 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ark-gm17 0.3.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-gm17 0.3.0
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate ark-gm17 0.3.0
[INFO] tweaked toml for crates.io crate ark-gm17 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate ark-gm17 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d83a8da4085bedd3f0e6c57d34a3fbcda8c49bf534884a759f8c8ff418877a28
[INFO] running `Command { std: "docker" "start" "-a" "d83a8da4085bedd3f0e6c57d34a3fbcda8c49bf534884a759f8c8ff418877a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d83a8da4085bedd3f0e6c57d34a3fbcda8c49bf534884a759f8c8ff418877a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d83a8da4085bedd3f0e6c57d34a3fbcda8c49bf534884a759f8c8ff418877a28", kill_on_drop: false }`
[INFO] [stdout] d83a8da4085bedd3f0e6c57d34a3fbcda8c49bf534884a759f8c8ff418877a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc5b4085b6d9365de4f16340e6df03fe09eb82db4d5a3d72b4fe131ea3564c64
[INFO] running `Command { std: "docker" "start" "-a" "fc5b4085b6d9365de4f16340e6df03fe09eb82db4d5a3d72b4fe131ea3564c64", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]    Compiling ark-ff v0.3.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling ark-serialize-derive v0.3.0
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking ark-serialize v0.3.0
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking ark-ec v0.3.0
[INFO] [stderr]     Checking ark-relations v0.3.0
[INFO] [stderr]     Checking ark-poly v0.3.0
[INFO] [stderr]     Checking ark-snark v0.3.0
[INFO] [stderr]     Checking ark-r1cs-std v0.3.0
[INFO] [stderr]     Checking ark-crypto-primitives v0.3.0
[INFO] [stderr]     Checking ark-bls12-377 v0.3.0
[INFO] [stderr]     Checking ark-bls12-381 v0.3.0
[INFO] [stderr]     Checking ark-cp6-782 v0.3.0
[INFO] [stderr]     Checking ark-gm17 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ark-mnt4-753 v0.3.0
[INFO] [stderr]     Checking ark-mnt4-298 v0.3.0
[INFO] [stderr]     Checking ark-mnt6-298 v0.3.0
[INFO] [stderr]     Checking ark-mnt6-753 v0.3.0
[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-gm17`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fc5b4085b6d9365de4f16340e6df03fe09eb82db4d5a3d72b4fe131ea3564c64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5b4085b6d9365de4f16340e6df03fe09eb82db4d5a3d72b4fe131ea3564c64", kill_on_drop: false }`
[INFO] [stdout] fc5b4085b6d9365de4f16340e6df03fe09eb82db4d5a3d72b4fe131ea3564c64