[INFO] fetching crate bellperson-nonnative 0.4.0...
[INFO] checking bellperson-nonnative-0.4.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate bellperson-nonnative 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bellperson-nonnative 0.4.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 95 packages to latest compatible versions
[INFO] [stderr]       Adding bellperson v0.24.1 (latest: v0.26.0)
[INFO] [stderr]       Adding blstrs v0.6.2 (latest: v0.7.1)
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[INFO] [stderr]       Adding ff v0.12.1 (latest: v0.13.0)
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[INFO] [stderr]       Adding memmap2 v0.5.10 (latest: v0.9.4)
[INFO] [stderr]       Adding num-bigint v0.3.3 (latest: v0.4.6)
[INFO] [stderr]       Adding pairing v0.22.0 (latest: v0.23.0)
[INFO] [stderr]       Adding radium v0.7.0 (latest: v1.1.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
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[INFO] [stderr]       Adding wyz v0.5.1 (latest: v0.6.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ff v0.12.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2db31b70aa5681ff0f4213444cb81a99a15aeeb00c970ea44c758fdbc5dee78b
[INFO] running `Command { std: "docker" "start" "-a" "2db31b70aa5681ff0f4213444cb81a99a15aeeb00c970ea44c758fdbc5dee78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2db31b70aa5681ff0f4213444cb81a99a15aeeb00c970ea44c758fdbc5dee78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db31b70aa5681ff0f4213444cb81a99a15aeeb00c970ea44c758fdbc5dee78b", kill_on_drop: false }`
[INFO] [stdout] 2db31b70aa5681ff0f4213444cb81a99a15aeeb00c970ea44c758fdbc5dee78b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18e2bf4918760c11b95668845d3ac1c62b0cace1e380faf380b03c2f0a960283
[INFO] running `Command { std: "docker" "start" "-a" "18e2bf4918760c11b95668845d3ac1c62b0cace1e380faf380b03c2f0a960283", kill_on_drop: false }`
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[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling blst v0.3.13
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
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[INFO] [stderr]     Checking wyz v0.5.1
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[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling zeroize v1.8.1
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[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]    Compiling bellperson v0.24.1
[INFO] [stderr]     Checking bellperson-nonnative v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `grab_mut` is never used
[INFO] [stdout]   --> src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait OptionExt<T> {
[INFO] [stdout]    |       --------- method in this trait
[INFO] [stdout] 15 |     fn grab(&self) -> Result<&T, SynthesisError>;
[INFO] [stdout] 16 |     fn grab_mut(&mut self) -> Result<&mut T, SynthesisError>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `grab_mut` is never used
[INFO] [stdout]   --> src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait OptionExt<T> {
[INFO] [stdout]    |       --------- method in this trait
[INFO] [stdout] 15 |     fn grab(&self) -> Result<&T, SynthesisError>;
[INFO] [stdout] 16 |     fn grab_mut(&mut self) -> Result<&mut T, SynthesisError>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.36s
[INFO] running `Command { std: "docker" "inspect" "18e2bf4918760c11b95668845d3ac1c62b0cace1e380faf380b03c2f0a960283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e2bf4918760c11b95668845d3ac1c62b0cace1e380faf380b03c2f0a960283", kill_on_drop: false }`
[INFO] [stdout] 18e2bf4918760c11b95668845d3ac1c62b0cace1e380faf380b03c2f0a960283