[INFO] cloning repository https://github.com/c0np4nn4/arkworks_zkregex_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/c0np4nn4/arkworks_zkregex_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc0np4nn4%2Farkworks_zkregex_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc0np4nn4%2Farkworks_zkregex_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c347375ba917dc5a1163d3488be992112671d63
[INFO] checking c0np4nn4/arkworks_zkregex_generator against try#7dabc88a3b6768751847baeb49983f31ac5f20e2 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc0np4nn4%2Farkworks_zkregex_generator" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/c0np4nn4/arkworks_zkregex_generator
[INFO] finished tweaking git repo https://github.com/c0np4nn4/arkworks_zkregex_generator
[INFO] tweaked toml for git repo https://github.com/c0np4nn4/arkworks_zkregex_generator written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/c0np4nn4/arkworks_zkregex_generator on toolchain 7dabc88a3b6768751847baeb49983f31ac5f20e2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/c0np4nn4/arkworks_zkregex_generator 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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d3ff4f91b49e13acd2dcdfe56021262b6ce1b7fa8cbd13ec419a6c532d56853
[INFO] running `Command { std: "docker" "start" "-a" "0d3ff4f91b49e13acd2dcdfe56021262b6ce1b7fa8cbd13ec419a6c532d56853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d3ff4f91b49e13acd2dcdfe56021262b6ce1b7fa8cbd13ec419a6c532d56853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d3ff4f91b49e13acd2dcdfe56021262b6ce1b7fa8cbd13ec419a6c532d56853", kill_on_drop: false }`
[INFO] [stdout] 0d3ff4f91b49e13acd2dcdfe56021262b6ce1b7fa8cbd13ec419a6c532d56853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab44312929daa255f2ada0b551164017f0f76ec25c9f4b8c75e6969de5e2c15
[INFO] running `Command { std: "docker" "start" "-a" "8ab44312929daa255f2ada0b551164017f0f76ec25c9f4b8c75e6969de5e2c15", kill_on_drop: false }`
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[INFO] [stderr]     Checking arkworks_regex_circuit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> example/src/generated_circuit.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |     for (index, current_input) in input_vars.iter().enumerate() {
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_state_4`
[INFO] [stdout]   --> example/src/generated_circuit.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 |       let is_state_4 = current_state.is_eq(&FpVar::constant(F::from(4u64)))?;
[INFO] [stdout]    |           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_state_4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> example/src/generated_circuit.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |     for (index, current_input) in input_vars.iter().enumerate() {
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_state_4`
[INFO] [stdout]   --> example/src/generated_circuit.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 |       let is_state_4 = current_state.is_eq(&FpVar::constant(F::from(4u64)))?;
[INFO] [stdout]    |           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_state_4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_len` is never read
[INFO] [stdout]   --> example/src/generated_circuit.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct RegexCircuit<F: PrimeField> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 12 |   pub input: Vec<F>,
[INFO] [stdout] 13 |   pub max_len: usize,
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RegexCircuit` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `max_len` is never read
[INFO] [stdout]   --> example/src/generated_circuit.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct RegexCircuit<F: PrimeField> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 12 |   pub input: Vec<F>,
[INFO] [stdout] 13 |   pub max_len: usize,
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RegexCircuit` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RegexPartConfig` is never constructed
[INFO] [stdout]  --> src/structs.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct RegexPartConfig {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DecomposedRegexConfig` is never constructed
[INFO] [stdout]   --> src/structs.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct DecomposedRegexConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `GenericError`, `GraphError`, and `NoAcceptedState` are never constructed
[INFO] [stdout]   --> src/errors.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub enum CompilerError {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 22 |     GenericError(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 23 |     #[error("Graph Error: {0}")]
[INFO] [stdout] 24 |     GraphError(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 25 |     #[error("No accepted state found in DFA")]
[INFO] [stdout] 26 |     NoAcceptedState,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RegexPartConfig` is never constructed
[INFO] [stdout]  --> src/structs.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct RegexPartConfig {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DecomposedRegexConfig` is never constructed
[INFO] [stdout]   --> src/structs.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct DecomposedRegexConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `GenericError`, `GraphError`, and `NoAcceptedState` are never constructed
[INFO] [stdout]   --> src/errors.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub enum CompilerError {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 22 |     GenericError(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 23 |     #[error("Graph Error: {0}")]
[INFO] [stdout] 24 |     GraphError(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 25 |     #[error("No accepted state found in DFA")]
[INFO] [stdout] 26 |     NoAcceptedState,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 40.96s
[INFO] running `Command { std: "docker" "inspect" "8ab44312929daa255f2ada0b551164017f0f76ec25c9f4b8c75e6969de5e2c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab44312929daa255f2ada0b551164017f0f76ec25c9f4b8c75e6969de5e2c15", kill_on_drop: false }`
[INFO] [stdout] 8ab44312929daa255f2ada0b551164017f0f76ec25c9f4b8c75e6969de5e2c15
