[INFO] updating cached repository BlockchainIdentityLab/zero-knowledge-rust-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BlockchainIdentityLab/zero-knowledge-rust-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BlockchainIdentityLab/zero-knowledge-rust-example" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/BlockchainIdentityLab/zero-knowledge-rust-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/BlockchainIdentityLab/zero-knowledge-rust-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BlockchainIdentityLab/zero-knowledge-rust-example" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/BlockchainIdentityLab/zero-knowledge-rust-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/BlockchainIdentityLab/zero-knowledge-rust-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fbdd17e79a054e629587885cd840263b6737b424
[INFO] sha for GitHub repo BlockchainIdentityLab/zero-knowledge-rust-example: fbdd17e79a054e629587885cd840263b6737b424
[INFO] validating manifest of BlockchainIdentityLab/zero-knowledge-rust-example on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of BlockchainIdentityLab/zero-knowledge-rust-example on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing BlockchainIdentityLab/zero-knowledge-rust-example
[INFO] finished frobbing BlockchainIdentityLab/zero-knowledge-rust-example
[INFO] frobbed toml for BlockchainIdentityLab/zero-knowledge-rust-example written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/BlockchainIdentityLab/zero-knowledge-rust-example/Cargo.toml
[INFO] started frobbing BlockchainIdentityLab/zero-knowledge-rust-example
[INFO] finished frobbing BlockchainIdentityLab/zero-knowledge-rust-example
[INFO] frobbed toml for BlockchainIdentityLab/zero-knowledge-rust-example written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/BlockchainIdentityLab/zero-knowledge-rust-example/Cargo.toml
[INFO] crate BlockchainIdentityLab/zero-knowledge-rust-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking BlockchainIdentityLab/zero-knowledge-rust-example against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-6/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/BlockchainIdentityLab/zero-knowledge-rust-example:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2c5027e03b0daa2a3921337e254144c750ccdc900b3d8ed418ecf62be01d51d5
[INFO] running `"docker" "start" "-a" "2c5027e03b0daa2a3921337e254144c750ccdc900b3d8ed418ecf62be01d51d5"`
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking zk-tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/prover.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sha3_256`
[INFO] [stderr]  --> src/prover.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::sha3::{Digest, Sha3_256};
[INFO] [stderr]   |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/prover.rs:93:16
[INFO] [stderr]    |
[INFO] [stderr] 93 |             if (i != self.problem.partition_sizes.len() - 1) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread_rng`
[INFO] [stderr]  --> src/verifier.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::{thread_rng, Rng, SeedableRng, StdRng};
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/prover.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sha3_256`
[INFO] [stderr]  --> src/prover.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::sha3::{Digest, Sha3_256};
[INFO] [stderr]   |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/prover.rs:93:16
[INFO] [stderr]    |
[INFO] [stderr] 93 |             if (i != self.problem.partition_sizes.len() - 1) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thread_rng`
[INFO] [stderr]  --> src/verifier.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::{thread_rng, Rng, SeedableRng, StdRng};
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Digest`
[INFO] [stderr]  --> src/prover.rs:6:18
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::sha3::{Digest, Sha3_256};
[INFO] [stderr]   |                  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/prover.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |         for mut i in 0..num_queries {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/merkle.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         for i in 0..next_pow_2 {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/merkle.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |         for (i, value) in leaf_node_data.iter().enumerate().rev() {
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hasher`
[INFO] [stderr]   --> src/merkle.rs:61:25
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 let mut hasher = Sha3_256::new();                   
[INFO] [stderr]    |                         ^^^^^^ help: consider prefixing with an underscore: `_hasher`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `abs_val`
[INFO] [stderr]   --> src/verifier.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let abs_val = (proof.merkle_proof_1.value - proof.merkle_proof_2.value).abs();
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_abs_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `abs_problem`
[INFO] [stderr]   --> src/verifier.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let abs_problem = problem[query_idx].abs();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_abs_problem`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Digest`
[INFO] [stderr]  --> src/prover.rs:6:18
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::sha3::{Digest, Sha3_256};
[INFO] [stderr]   |                  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/prover.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |         for mut i in 0..num_queries {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/merkle.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         for i in 0..next_pow_2 {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/merkle.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |         for (i, value) in leaf_node_data.iter().enumerate().rev() {
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hasher`
[INFO] [stderr]   --> src/merkle.rs:61:25
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 let mut hasher = Sha3_256::new();                   
[INFO] [stderr]    |                         ^^^^^^ help: consider prefixing with an underscore: `_hasher`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `abs_val`
[INFO] [stderr]   --> src/verifier.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let abs_val = (proof.merkle_proof_1.value - proof.merkle_proof_2.value).abs();
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_abs_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `abs_problem`
[INFO] [stderr]   --> src/verifier.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let abs_problem = problem[query_idx].abs();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_abs_problem`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `merkle`, `prover`
[INFO] [stderr]  --> src/main.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use zkpartition::{merkle, prover, problem};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let config = problem::PartictionProblem::new(&problem, &assignment).unwrap_or_else(|err| {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_config`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `merkle`, `prover`
[INFO] [stderr]  --> src/main.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use zkpartition::{merkle, prover, problem};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let config = problem::PartictionProblem::new(&problem, &assignment).unwrap_or_else(|err| {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_config`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "2c5027e03b0daa2a3921337e254144c750ccdc900b3d8ed418ecf62be01d51d5"`
[INFO] running `"docker" "rm" "-f" "2c5027e03b0daa2a3921337e254144c750ccdc900b3d8ed418ecf62be01d51d5"`
[INFO] [stdout] 2c5027e03b0daa2a3921337e254144c750ccdc900b3d8ed418ecf62be01d51d5