[INFO] fetching crate r1cs 0.4.7...
[INFO] checking r1cs-0.4.7 against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] extracting crate r1cs 0.4.7 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate r1cs 0.4.7 on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 62 packages to latest compatible versions
[INFO] [stderr]       Adding bimap v0.4.0 (available: v0.6.3)
[INFO] [stderr]       Adding criterion v0.2.11 (available: v0.8.2)
[INFO] [stderr]       Adding itertools v0.8.2 (available: v0.14.0)
[INFO] [stderr]       Adding num v0.2.1 (available: v0.4.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bimap v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ac1540a1dad7e3584e3743a533a64c8074888798840dc678ed66312b71960b4
[INFO] running `Command { std: "docker" "start" "-a" "3ac1540a1dad7e3584e3743a533a64c8074888798840dc678ed66312b71960b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ac1540a1dad7e3584e3743a533a64c8074888798840dc678ed66312b71960b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac1540a1dad7e3584e3743a533a64c8074888798840dc678ed66312b71960b4", kill_on_drop: false }`
[INFO] [stdout] 3ac1540a1dad7e3584e3743a533a64c8074888798840dc678ed66312b71960b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51e054f63539579f4483541b62b88a592140ce76c0d6cc1cf84c4d8f19f8940b
[INFO] running `Command { std: "docker" "start" "-a" "51e054f63539579f4483541b62b88a592140ce76c0d6cc1cf84c4d8f19f8940b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking bimap v0.4.0
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking criterion v0.2.11
[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)]` (part of `#[warn(unused)]`) 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`, and `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: fields `x` and `y` are never read
[INFO] [stdout]   --> src/curve.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct MontgomeryPointExpression<F: Field> {
[INFO] [stdout]    |            ------------------------- fields in this struct
[INFO] [stdout] 59 |     x: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 60 |     y: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/curve.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct WeierstrassPointExpression<F: Field> {
[INFO] [stdout]    |            -------------------------- fields in this struct
[INFO] [stdout] 67 |     x: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 68 |     y: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> src/curve.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct ProjWeierstrassPointExpression<F: Field> {
[INFO] [stdout]    |            ------------------------------ fields in this struct
[INFO] [stdout] 75 |     x: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 76 |     y: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 77 |     z: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `SignatureExpression` is never used
[INFO] [stdout]  --> src/signature.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait SignatureExpression<F: Field, C: EdwardsCurve<F>, CF> {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SchnorrSignatureExpression` is never constructed
[INFO] [stdout]   --> src/signature.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct SchnorrSignatureExpression<F: Field> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) on by default
[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: fields `x` and `y` are never read
[INFO] [stdout]   --> src/curve.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct MontgomeryPointExpression<F: Field> {
[INFO] [stdout]    |            ------------------------- fields in this struct
[INFO] [stdout] 59 |     x: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 60 |     y: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/curve.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct WeierstrassPointExpression<F: Field> {
[INFO] [stdout]    |            -------------------------- fields in this struct
[INFO] [stdout] 67 |     x: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 68 |     y: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> src/curve.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct ProjWeierstrassPointExpression<F: Field> {
[INFO] [stdout]    |            ------------------------------ fields in this struct
[INFO] [stdout] 75 |     x: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 76 |     y: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 77 |     z: Expression<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] running `Command { std: "docker" "inspect" "51e054f63539579f4483541b62b88a592140ce76c0d6cc1cf84c4d8f19f8940b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e054f63539579f4483541b62b88a592140ce76c0d6cc1cf84c4d8f19f8940b", kill_on_drop: false }`
[INFO] [stdout] 51e054f63539579f4483541b62b88a592140ce76c0d6cc1cf84c4d8f19f8940b
