[INFO] cloning repository https://github.com/atsupontio/arkworks-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/atsupontio/arkworks-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatsupontio%2Farkworks-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatsupontio%2Farkworks-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4191a23a13fe87e307c0f9e1e2868d2bb244527
[INFO] checking atsupontio/arkworks-example against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatsupontio%2Farkworks-example" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/atsupontio/arkworks-example
[INFO] finished tweaking git repo https://github.com/atsupontio/arkworks-example
[INFO] tweaked toml for git repo https://github.com/atsupontio/arkworks-example written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/atsupontio/arkworks-example on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/atsupontio/arkworks-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-serialize-derive v0.3.0
[INFO] [stderr]   Downloaded ark-snark v0.3.0
[INFO] [stderr]   Downloaded arkworks-native-gadgets v1.2.0
[INFO] [stderr]   Downloaded serde v1.0.150
[INFO] [stderr]   Downloaded serde_derive v1.0.150
[INFO] [stderr]   Downloaded ark-ed-on-bls12-381 v0.3.0
[INFO] [stderr]   Downloaded paste v1.0.10
[INFO] [stderr]   Downloaded ark-bls12-381 v0.3.0
[INFO] [stderr]   Downloaded ark-poly v0.3.0
[INFO] [stderr]   Downloaded ark-groth16 v0.3.0
[INFO] [stderr]   Downloaded ark-crypto-primitives v0.3.0
[INFO] [stderr]   Downloaded ark-nonnative-field v0.3.0
[INFO] [stderr]   Downloaded ark-r1cs-std v0.3.1
[INFO] [stderr]   Downloaded pest v2.5.1
[INFO] [stderr]   Downloaded ark-ec v0.3.0
[INFO] [stderr]   Downloaded ark-relations v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e08a8a2c02e90a26fcf67df52e98c9a7eabd1b1f8f8f4ff6d0c65adcd2328d76
[INFO] running `Command { std: "docker" "start" "-a" "e08a8a2c02e90a26fcf67df52e98c9a7eabd1b1f8f8f4ff6d0c65adcd2328d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e08a8a2c02e90a26fcf67df52e98c9a7eabd1b1f8f8f4ff6d0c65adcd2328d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e08a8a2c02e90a26fcf67df52e98c9a7eabd1b1f8f8f4ff6d0c65adcd2328d76", kill_on_drop: false }`
[INFO] [stdout] e08a8a2c02e90a26fcf67df52e98c9a7eabd1b1f8f8f4ff6d0c65adcd2328d76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b30c2dd6c9e3341082c293a9f55307e36e26e5673f12a6645129478e07e610e
[INFO] running `Command { std: "docker" "start" "-a" "5b30c2dd6c9e3341082c293a9f55307e36e26e5673f12a6645129478e07e610e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling paste v1.0.10
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling serde_derive v1.0.150
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling ark-serialize-derive v0.3.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.23
[INFO] [stderr]    Compiling zeroize_derive v1.3.3
[INFO] [stderr]     Checking ark-serialize v0.3.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]    Compiling pest v2.5.1
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling ark-ff v0.3.0
[INFO] [stderr]     Checking ark-relations v0.3.0
[INFO] [stderr]     Checking ark-ec 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 v0.3.1
[INFO] [stderr]     Checking ark-bls12-381 v0.3.0
[INFO] [stderr]     Checking ark-nonnative-field v0.3.0
[INFO] [stderr]     Checking ark-ed-on-bls12-381 v0.3.0
[INFO] [stderr]     Checking ark-crypto-primitives v0.3.0
[INFO] [stderr]     Checking ark-groth16 v0.3.0
[INFO] [stderr]     Checking arkworks-native-gadgets v1.2.0
[INFO] [stderr]     Checking arkworks-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Bls12_381`
[INFO] [stdout]  --> src/cube.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ark_bls12_381::{Bls12_381, Fr};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Field`
[INFO] [stdout]  --> src/main.rs:7:87
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ark_relations::r1cs::{ConstraintSynthesizer, ConstraintSystemRef, SynthesisError, Field}; 
[INFO] [stdout]   |                                                                                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ark_crypto_primitives::snark::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ark_crypto_primitives::snark::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ark_ec::PairingEngine`
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     use ark_ec::PairingEngine;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_field_elements`
[INFO] [stdout]   --> src/main.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use arkworks_native_gadgets::{to_field_elements, from_field_elements};
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_field_elements`
[INFO] [stdout]   --> src/cube.rs:56:35
[INFO] [stdout]    |
[INFO] [stdout] 56 |     use arkworks_native_gadgets::{to_field_elements, from_field_elements};
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Field`
[INFO] [stdout]  --> src/main.rs:7:87
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ark_relations::r1cs::{ConstraintSynthesizer, ConstraintSystemRef, SynthesisError, Field}; 
[INFO] [stdout]   |                                                                                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ark_crypto_primitives::snark::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ark_crypto_primitives::snark::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ark_ec::PairingEngine`
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     use ark_ec::PairingEngine;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_field_elements`
[INFO] [stdout]   --> src/main.rs:74:35
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use arkworks_native_gadgets::{to_field_elements, from_field_elements};
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CubeDemo` is never constructed
[INFO] [stdout]   --> src/cube.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct CubeDemo {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CubicDemoCircuit` is never constructed
[INFO] [stdout]  --> src/cube_lc.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct CubicDemoCircuit<F: Field> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `public_input`
[INFO] [stdout]   --> src/cube.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let public_input = from_field_elements(&statement).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_public_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.39s
[INFO] running `Command { std: "docker" "inspect" "5b30c2dd6c9e3341082c293a9f55307e36e26e5673f12a6645129478e07e610e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b30c2dd6c9e3341082c293a9f55307e36e26e5673f12a6645129478e07e610e", kill_on_drop: false }`
[INFO] [stdout] 5b30c2dd6c9e3341082c293a9f55307e36e26e5673f12a6645129478e07e610e
