[INFO] fetching crate r1cs 0.4.7...
[INFO] checking r1cs-0.4.7 against beta for pr-78714
[INFO] extracting crate r1cs 0.4.7 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate r1cs 0.4.7 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate r1cs 0.4.7
[INFO] finished tweaking crates.io crate r1cs 0.4.7
[INFO] tweaked toml for crates.io crate r1cs 0.4.7 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97c3193deb54fc8992debb6d7c2f9e4b2f9e8da5820891678f1b8f542cb80d09
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "97c3193deb54fc8992debb6d7c2f9e4b2f9e8da5820891678f1b8f542cb80d09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97c3193deb54fc8992debb6d7c2f9e4b2f9e8da5820891678f1b8f542cb80d09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c3193deb54fc8992debb6d7c2f9e4b2f9e8da5820891678f1b8f542cb80d09", kill_on_drop: false }`
[INFO] [stdout] 97c3193deb54fc8992debb6d7c2f9e4b2f9e8da5820891678f1b8f542cb80d09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71a7ec88e758d4c4a4540caec7ae243bf77ed464bc7e3424869af1a3ac405569
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "71a7ec88e758d4c4a4540caec7ae243bf77ed464bc7e3424869af1a3ac405569", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking r1cs v0.4.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]   --> src/embedded_curve.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     use std::iter;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/embedded_curve.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     use std::str::FromStr;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::assert_equal`
[INFO] [stdout]   --> src/embedded_curve.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     use itertools::assert_equal;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Bls12_381`, `Bn128`, `Element`
[INFO] [stdout]   --> src/embedded_curve.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 41 |     use crate::field::{Bn128, Bls12_381, Element};
[INFO] [stdout]    |                        ^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/curve.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     x: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/curve.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     y: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/curve.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     x: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/curve.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     y: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/curve.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     x: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/curve.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     y: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z`
[INFO] [stdout]   --> src/curve.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     z: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/curve.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let p = EdwardsPointExpression::<Bls12_381, JubJub>::from_expressions(
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/curve.rs:281:13
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let p = EdwardsPointExpression::<Bls12_381, JubJub>::from_expressions(
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p3`
[INFO] [stdout]    --> src/curve.rs:342:13
[INFO] [stdout]     |
[INFO] [stdout] 342 |         let p3 = EdwardsPointExpression::<Bls12_381, JubJub>::scalar_mult(
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_p3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `builder`
[INFO] [stdout]   --> src/signature.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut builder = GadgetBuilder::<Bls12_381>::new();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_builder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/signature.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut builder = GadgetBuilder::<Bls12_381>::new();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/curve.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     x: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/curve.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     y: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/curve.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     x: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/curve.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     y: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/curve.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     x: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/curve.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     y: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z`
[INFO] [stdout]   --> src/curve.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     z: Expression<F>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `Command { std: "docker" "inspect" "71a7ec88e758d4c4a4540caec7ae243bf77ed464bc7e3424869af1a3ac405569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71a7ec88e758d4c4a4540caec7ae243bf77ed464bc7e3424869af1a3ac405569", kill_on_drop: false }`
[INFO] [stdout] 71a7ec88e758d4c4a4540caec7ae243bf77ed464bc7e3424869af1a3ac405569