[INFO] cloning repository https://github.com/snp-labs/arkworks-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snp-labs/arkworks-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnp-labs%2Farkworks-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnp-labs%2Farkworks-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 163c2e9b957c9c98e7f5623f0af06199770155e5
[INFO] checking snp-labs/arkworks-study against master#5431404b87967c69438ea1e698edbe96505f0798 for pr-119849
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnp-labs%2Farkworks-study" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snp-labs/arkworks-study on toolchain 5431404b87967c69438ea1e698edbe96505f0798
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snp-labs/arkworks-study
[INFO] finished tweaking git repo https://github.com/snp-labs/arkworks-study
[INFO] tweaked toml for git repo https://github.com/snp-labs/arkworks-study written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/snp-labs/arkworks-study 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" "+5431404b87967c69438ea1e698edbe96505f0798" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.Authors
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-groth16 v0.4.0
[INFO] [stderr]   Downloaded ark-r1cs-std v0.4.0
[INFO] [stderr]   Downloaded ark-crypto-primitives v0.4.0
[INFO] [stderr]   Downloaded ark-snark v0.4.0
[INFO] [stderr]   Downloaded ark-relations v0.4.0
[INFO] [stderr]   Downloaded ark-ed-on-bn254 v0.4.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d32166d3bff3ce93febcca921b5bcc507a8bb9b1771472ccc11fa8b3881a486
[INFO] running `Command { std: "docker" "start" "-a" "9d32166d3bff3ce93febcca921b5bcc507a8bb9b1771472ccc11fa8b3881a486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d32166d3bff3ce93febcca921b5bcc507a8bb9b1771472ccc11fa8b3881a486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d32166d3bff3ce93febcca921b5bcc507a8bb9b1771472ccc11fa8b3881a486", kill_on_drop: false }`
[INFO] [stdout] 9d32166d3bff3ce93febcca921b5bcc507a8bb9b1771472ccc11fa8b3881a486
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f774856cfcfeba350970d948c000989e16451fd8a6ccc34407e99b2a63191157
[INFO] running `Command { std: "docker" "start" "-a" "f774856cfcfeba350970d948c000989e16451fd8a6ccc34407e99b2a63191157", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.Authors
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking rayon-core v1.12.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling ahash v0.8.6
[INFO] [stderr]     Checking zerocopy v0.7.15
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking cpufeatures v0.2.10
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]    Compiling ark-serialize-derive v0.4.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.4.2
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking ark-poly v0.4.2
[INFO] [stderr]     Checking ark-relations v0.4.0
[INFO] [stderr]     Checking ark-snark v0.4.0
[INFO] [stderr]     Checking ark-ec v0.4.2
[INFO] [stderr]     Checking ark-r1cs-std v0.4.0
[INFO] [stderr]     Checking ark-bn254 v0.4.0
[INFO] [stderr]     Checking ark-crypto-primitives v0.4.0
[INFO] [stderr]     Checking ark-ed-on-bn254 v0.4.0
[INFO] [stderr]     Checking ark-groth16 v0.4.0
[INFO] [stderr]     Checking arkworks-study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/gadgets/public_encryptions/elgamal/constraints.rs:136:64
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let c1 = GG::new_variable(cs.clone(), || prep.map(|g| g.borrow().0), mode)?;
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` does not implement `Borrow`, so calling `borrow` on `&(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/gadgets/public_encryptions/elgamal/constraints.rs:137:64
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let c2 = GG::new_variable(cs.clone(), || prep.map(|g| g.borrow().1), mode)?;
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` does not implement `Borrow`, so calling `borrow` on `&(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/gadgets/public_encryptions/elgamal/constraints.rs:136:64
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let c1 = GG::new_variable(cs.clone(), || prep.map(|g| g.borrow().0), mode)?;
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` does not implement `Borrow`, so calling `borrow` on `&(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/gadgets/public_encryptions/elgamal/constraints.rs:137:64
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let c2 = GG::new_variable(cs.clone(), || prep.map(|g| g.borrow().1), mode)?;
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` does not implement `Borrow`, so calling `borrow` on `&(<C as CurveGroup>::Affine, <C as CurveGroup>::Affine)` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.54s
[INFO] running `Command { std: "docker" "inspect" "f774856cfcfeba350970d948c000989e16451fd8a6ccc34407e99b2a63191157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f774856cfcfeba350970d948c000989e16451fd8a6ccc34407e99b2a63191157", kill_on_drop: false }`
[INFO] [stdout] f774856cfcfeba350970d948c000989e16451fd8a6ccc34407e99b2a63191157