[INFO] fetching crate ark-mnt4-298 0.3.0...
[INFO] building ark-mnt4-298-0.3.0 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate ark-mnt4-298 0.3.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate ark-mnt4-298 0.3.0 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-mnt4-298 0.3.0
[INFO] finished tweaking crates.io crate ark-mnt4-298 0.3.0
[INFO] tweaked toml for crates.io crate ark-mnt4-298 0.3.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6ae192a99d17b901d1a42af2f5a671baa942d6af405cfbae0e6b55eec67d6690
[INFO] running `Command { std: "docker" "start" "-a" "6ae192a99d17b901d1a42af2f5a671baa942d6af405cfbae0e6b55eec67d6690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ae192a99d17b901d1a42af2f5a671baa942d6af405cfbae0e6b55eec67d6690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae192a99d17b901d1a42af2f5a671baa942d6af405cfbae0e6b55eec67d6690", kill_on_drop: false }`
[INFO] [stdout] 6ae192a99d17b901d1a42af2f5a671baa942d6af405cfbae0e6b55eec67d6690
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a97087fb07bfb74f4891cf22d9912444669e007fd0fc06022f5d0062b5c6d404
[INFO] running `Command { std: "docker" "start" "-a" "a97087fb07bfb74f4891cf22d9912444669e007fd0fc06022f5d0062b5c6d404", kill_on_drop: false }`
[INFO] [stderr]    Compiling ark-mnt4-298 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "a97087fb07bfb74f4891cf22d9912444669e007fd0fc06022f5d0062b5c6d404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97087fb07bfb74f4891cf22d9912444669e007fd0fc06022f5d0062b5c6d404", kill_on_drop: false }`
[INFO] [stdout] a97087fb07bfb74f4891cf22d9912444669e007fd0fc06022f5d0062b5c6d404
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 82bd7cbc56d01efcaf83ead9e9d899d19e10628283fde60ae58f89095c07ffec
[INFO] running `Command { std: "docker" "start" "-a" "82bd7cbc56d01efcaf83ead9e9d899d19e10628283fde60ae58f89095c07ffec", kill_on_drop: false }`
[INFO] [stderr]    Compiling ark-relations v0.3.0
[INFO] [stderr]    Compiling ark-algebra-test-templates v0.3.0
[INFO] [stderr]    Compiling ark-mnt4-298 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.11s
[INFO] running `Command { std: "docker" "inspect" "82bd7cbc56d01efcaf83ead9e9d899d19e10628283fde60ae58f89095c07ffec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82bd7cbc56d01efcaf83ead9e9d899d19e10628283fde60ae58f89095c07ffec", kill_on_drop: false }`
[INFO] [stdout] 82bd7cbc56d01efcaf83ead9e9d899d19e10628283fde60ae58f89095c07ffec