[INFO] fetching crate bellperson-nonnative 0.4.0...
[INFO] checking bellperson-nonnative-0.4.0 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate bellperson-nonnative 0.4.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate bellperson-nonnative 0.4.0 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bellperson-nonnative 0.4.0
[INFO] finished tweaking crates.io crate bellperson-nonnative 0.4.0
[INFO] tweaked toml for crates.io crate bellperson-nonnative 0.4.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ff v0.12.1
[INFO] [stderr]   Downloaded quickcheck_macros v1.0.0
[INFO] [stderr]   Downloaded group v0.12.1
[INFO] [stderr]   Downloaded quickcheck v1.0.3
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[INFO] [stderr]   Downloaded bellperson v0.24.1
[INFO] [stderr]   Downloaded addchain v0.2.0
[INFO] [stderr]   Downloaded blstrs v0.6.2
[INFO] [stderr]   Downloaded ec-gpu-gen v0.5.2
[INFO] [stderr]   Downloaded pairing v0.22.0
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] [stderr]   Downloaded ff_derive v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bd68b1459b2364ebb829e75c8ce98eb3df61c8c6752c2b7bdbee5ab10b2b014
[INFO] running `Command { std: "docker" "start" "-a" "2bd68b1459b2364ebb829e75c8ce98eb3df61c8c6752c2b7bdbee5ab10b2b014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bd68b1459b2364ebb829e75c8ce98eb3df61c8c6752c2b7bdbee5ab10b2b014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd68b1459b2364ebb829e75c8ce98eb3df61c8c6752c2b7bdbee5ab10b2b014", kill_on_drop: false }`
[INFO] [stdout] 2bd68b1459b2364ebb829e75c8ce98eb3df61c8c6752c2b7bdbee5ab10b2b014
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f26af4520ec141c7d157514e7c5ed4eda28a1511dc0943f2901e78a5a177232
[INFO] running `Command { std: "docker" "start" "-a" "0f26af4520ec141c7d157514e7c5ed4eda28a1511dc0943f2901e78a5a177232", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
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[INFO] [stderr]    Compiling bellperson v0.24.1
[INFO] [stderr]     Checking bellperson-nonnative v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&BigInt` instead of cloning the inner type
[INFO] [stdout]     --> src/mp/bignat.rs:1293:32
[INFO] [stdout]      |
[INFO] [stdout] 1293 |             || Ok(value.grab()?.clone().clone()),
[INFO] [stdout]      |                                ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&num_bigint::BigInt` instead of cloning the inner type
[INFO] [stdout]     --> src/mp/bignat.rs:1293:32
[INFO] [stdout]      |
[INFO] [stdout] 1293 |             || Ok(value.grab()?.clone().clone()),
[INFO] [stdout]      |                                ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.22s
[INFO] running `Command { std: "docker" "inspect" "0f26af4520ec141c7d157514e7c5ed4eda28a1511dc0943f2901e78a5a177232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f26af4520ec141c7d157514e7c5ed4eda28a1511dc0943f2901e78a5a177232", kill_on_drop: false }`
[INFO] [stdout] 0f26af4520ec141c7d157514e7c5ed4eda28a1511dc0943f2901e78a5a177232
