[INFO] cloning repository https://github.com/miguelis/witness_optimizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/miguelis/witness_optimizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiguelis%2Fwitness_optimizer", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 793d3dcb668721aa9ea27508a6a9927a130b5d0e
[INFO] documenting miguelis/witness_optimizer against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiguelis%2Fwitness_optimizer" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/miguelis/witness_optimizer on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/miguelis/witness_optimizer
[INFO] finished tweaking git repo https://github.com/miguelis/witness_optimizer
[INFO] tweaked toml for git repo https://github.com/miguelis/witness_optimizer written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/miguelis/witness_optimizer 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-bigint-dig v0.6.1
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba331435dc22f91c4f8fc5dd7b122943520d24cf64187d8be0ef5db117093dcb
[INFO] running `Command { std: "docker" "start" "-a" "ba331435dc22f91c4f8fc5dd7b122943520d24cf64187d8be0ef5db117093dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba331435dc22f91c4f8fc5dd7b122943520d24cf64187d8be0ef5db117093dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba331435dc22f91c4f8fc5dd7b122943520d24cf64187d8be0ef5db117093dcb", kill_on_drop: false }`
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[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 379804c74b022584e9624e3a5ffb13016545847b28f3c26869815ad668d24445
[INFO] running `Command { std: "docker" "start" "-a" "379804c74b022584e9624e3a5ffb13016545847b28f3c26869815ad668d24445", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling num-bigint-dig v0.6.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking constant_tracking v2.0.1 (/opt/rustwide/workdir/constant_tracking)
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]  Documenting constant_tracking v2.0.1 (/opt/rustwide/workdir/constant_tracking)
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking circom_algebra v2.0.1 (/opt/rustwide/workdir/circom_algebra)
[INFO] [stderr]  Documenting circom_algebra v2.0.1 (/opt/rustwide/workdir/circom_algebra)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> circom_algebra/src/algebra.rs:1164:21
[INFO] [stdout]      |
[INFO] [stdout] 1164 |                 let mut monomial;
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking constraint_writers v2.0.1 (/opt/rustwide/workdir/constraint_writers)
[INFO] [stderr]  Documenting constraint_writers v2.0.1 (/opt/rustwide/workdir/constraint_writers)
[INFO] [stderr]     Checking constraint_list v2.0.1 (/opt/rustwide/workdir/constraint_list)
[INFO] [stderr]  Documenting constraint_list v2.0.1 (/opt/rustwide/workdir/constraint_list)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> constraint_list/src/lib.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, LinkedList};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `constraint_writers::debug_writer::DebugWriter`
[INFO] [stdout]  --> constraint_list/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use constraint_writers::debug_writer::DebugWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `constraint_writers::ConstraintExporter`
[INFO] [stdout]  --> constraint_list/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use constraint_writers::ConstraintExporter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `A`
[INFO] [stdout]  --> constraint_list/src/constraint_simplification.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::{ConstraintStorage, A, C, S, HashConstraint};
[INFO] [stdout]   |                                ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> constraint_list/src/constraint_simplification.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `circom_algebra::simplification_utils::build_encoded_fast_substitutions`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:593:9
[INFO] [stdout]     |
[INFO] [stdout] 593 |     use circom_algebra::simplification_utils::build_encoded_fast_substitutions;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `circom_algebra::simplification_utils::fast_encoded_constraint_substitution`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |     use circom_algebra::simplification_utils::fast_encoded_constraint_substitution;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:596:9
[INFO] [stdout]     |
[INFO] [stdout] 596 |     use std::sync::mpsc;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `threadpool::ThreadPool`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |     use threadpool::ThreadPool;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `circom_algebra::modular_arithmetic::*`
[INFO] [stdout]  --> constraint_list/src/cluster_non_linear.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use circom_algebra::modular_arithmetic::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:276:13
[INFO] [stdout]     |
[INFO] [stdout] 276 |         let n = Cluster::size(&cluster);
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:352:9
[INFO] [stdout]     |
[INFO] [stdout] 352 |     for i in &minimal_clusters{
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:391:18
[INFO] [stdout]     |
[INFO] [stdout] 391 |              for c2 in c.c(){
[INFO] [stdout]     |                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `constants`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:621:33
[INFO] [stdout]     |
[INFO] [stdout] 621 |         let (substitutions, mut constants) = linear_simplification(
[INFO] [stdout]     |                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `apply_only_affected`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:663:13
[INFO] [stdout]     |
[INFO] [stdout] 663 |     let mut apply_only_affected = true;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_apply_only_affected`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dur`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:774:9
[INFO] [stdout]     |
[INFO] [stdout] 774 |     let dur = now.elapsed().unwrap().as_millis();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_dur`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:811:9
[INFO] [stdout]     |
[INFO] [stdout] 811 |     for s in toberemoved{
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `field`
[INFO] [stdout]   --> constraint_list/src/preprocess_non_linear.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         field: &BigInt,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_field`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:621:29
[INFO] [stdout]     |
[INFO] [stdout] 621 |         let (substitutions, mut constants) = linear_simplification(
[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: variable does not need to be mutable
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:663:9
[INFO] [stdout]     |
[INFO] [stdout] 663 |     let mut apply_only_affected = true;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `A` is never used
[INFO] [stdout]   --> constraint_list/src/lib.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type A = circom_algebra::algebra::ArithmeticExpression<usize>;
[INFO] [stdout]    |      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SEncoded` is never used
[INFO] [stdout]   --> constraint_list/src/lib.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | type SEncoded = HashMap<usize, A>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SFrames` is never used
[INFO] [stdout]   --> constraint_list/src/lib.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | type SFrames = LinkedList<SEncoded>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_clusters_quadratic_equalities` is never used
[INFO] [stdout]   --> constraint_list/src/constraint_simplification.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn get_clusters_quadratic_equalities(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_clusters_definitions` is never used
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn get_clusters_definitions(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_possible_combinations_clusters` is never used
[INFO] [stdout]    --> constraint_list/src/constraint_simplification.rs:213:4
[INFO] [stdout]     |
[INFO] [stdout] 213 | fn generate_possible_combinations_clusters(signal_to_clusters: &Vec<Vec<usize>>) 
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting optimizer v2.0.1 (/opt/rustwide/workdir/optimizer)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "379804c74b022584e9624e3a5ffb13016545847b28f3c26869815ad668d24445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "379804c74b022584e9624e3a5ffb13016545847b28f3c26869815ad668d24445", kill_on_drop: false }`
[INFO] [stdout] 379804c74b022584e9624e3a5ffb13016545847b28f3c26869815ad668d24445
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91b2b8338a4878ab867a370d252c342d845c9a6b580e793de12124478c95b917
[INFO] running `Command { std: "docker" "start" "-a" "91b2b8338a4878ab867a370d252c342d845c9a6b580e793de12124478c95b917", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "91b2b8338a4878ab867a370d252c342d845c9a6b580e793de12124478c95b917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b2b8338a4878ab867a370d252c342d845c9a6b580e793de12124478c95b917", kill_on_drop: false }`
[INFO] [stdout] 91b2b8338a4878ab867a370d252c342d845c9a6b580e793de12124478c95b917
