[INFO] cloning repository https://github.com/hkoosha/rust-regex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hkoosha/rust-regex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkoosha%2Frust-regex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkoosha%2Frust-regex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea66be0034a14edc35d51d46fbc1ad32a235f611
[INFO] checking hkoosha/rust-regex against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhkoosha%2Frust-regex" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hkoosha/rust-regex on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hkoosha/rust-regex
[INFO] finished tweaking git repo https://github.com/hkoosha/rust-regex
[INFO] tweaked toml for git repo https://github.com/hkoosha/rust-regex written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/hkoosha/rust-regex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1bfc388cdeef5292b9b8dbaa26e5e74ff18b81ab1deb3495862be77aa565230
[INFO] running `Command { std: "docker" "start" "-a" "b1bfc388cdeef5292b9b8dbaa26e5e74ff18b81ab1deb3495862be77aa565230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1bfc388cdeef5292b9b8dbaa26e5e74ff18b81ab1deb3495862be77aa565230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1bfc388cdeef5292b9b8dbaa26e5e74ff18b81ab1deb3495862be77aa565230", kill_on_drop: false }`
[INFO] [stdout] b1bfc388cdeef5292b9b8dbaa26e5e74ff18b81ab1deb3495862be77aa565230
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fe5a06ade4f5b40c1cdb2f6bf9f1c8fdb5b02488415ca87af7531498cd27cab
[INFO] running `Command { std: "docker" "start" "-a" "1fe5a06ade4f5b40c1cdb2f6bf9f1c8fdb5b02488415ca87af7531498cd27cab", kill_on_drop: false }`
[INFO] [stderr]     Checking regex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/regex0/constructs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/regex0/constructs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total`
[INFO] [stdout]   --> src/pda/mod.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let total = 0usize;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/pda/mod.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn is_found(&self, state: usize, input: &str, stack: usize) -> bool {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]   --> src/pda/mod.rs:28:51
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn is_found(&self, state: usize, input: &str, stack: usize) -> bool {
[INFO] [stdout]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]  --> src/regex2/functionals.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     for token in tokens.chars() {
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total`
[INFO] [stdout]   --> src/pda/mod.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let total = 0usize;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_total`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/pda/mod.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn is_found(&self, state: usize, input: &str, stack: usize) -> bool {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]   --> src/pda/mod.rs:28:51
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn is_found(&self, state: usize, input: &str, stack: usize) -> bool {
[INFO] [stdout]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]  --> src/regex2/functionals.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     for token in tokens.chars() {
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PDA`
[INFO] [stdout]  --> src/pda/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct PDA {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generate`
[INFO] [stdout]   --> src/pda/mod.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn generate(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_found`
[INFO] [stdout]   --> src/pda/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn is_found(&self, state: usize, input: &str, stack: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `epsilon`
[INFO] [stdout]   --> src/regex2/constructs.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     epsilon: Vec<RNfaState>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delta`
[INFO] [stdout]   --> src/regex2/constructs.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     delta: HashMap<char, RNfaState>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/regex2/constructs.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(name: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_epsilon`
[INFO] [stdout]   --> src/regex2/constructs.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn add_epsilon(&mut self, state: RNfaState) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_delta`
[INFO] [stdout]   --> src/regex2/constructs.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn add_delta(&mut self, symbol: char, state: RNfaState) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shunting_yard`
[INFO] [stdout]  --> src/regex2/functionals.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn shunting_yard(tokens: &str) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PDA`
[INFO] [stdout]  --> src/pda/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct PDA {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generate`
[INFO] [stdout]   --> src/pda/mod.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn generate(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_found`
[INFO] [stdout]   --> src/pda/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn is_found(&self, state: usize, input: &str, stack: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `epsilon`
[INFO] [stdout]   --> src/regex2/constructs.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     epsilon: Vec<RNfaState>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delta`
[INFO] [stdout]   --> src/regex2/constructs.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     delta: HashMap<char, RNfaState>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/regex2/constructs.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(name: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_epsilon`
[INFO] [stdout]   --> src/regex2/constructs.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn add_epsilon(&mut self, state: RNfaState) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_delta`
[INFO] [stdout]   --> src/regex2/constructs.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn add_delta(&mut self, symbol: char, state: RNfaState) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shunting_yard`
[INFO] [stdout]  --> src/regex2/functionals.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn shunting_yard(tokens: &str) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::regex1::nfa::recognize`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex::regex1::nfa::recognize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `to_postfix`, `with_explicit_concat`
[INFO] [stdout]  --> src/main.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::regex1::parser::{to_postfix, with_explicit_concat};
[INFO] [stdout]   |                             ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `create_matcher`
[INFO] [stdout]  --> src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex::regex1::{create_matcher, main0};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::regex1::nfa::recognize`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex::regex1::nfa::recognize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `to_postfix`, `with_explicit_concat`
[INFO] [stdout]  --> src/main.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::regex1::parser::{to_postfix, with_explicit_concat};
[INFO] [stdout]   |                             ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `create_matcher`
[INFO] [stdout]  --> src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex::regex1::{create_matcher, main0};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "1fe5a06ade4f5b40c1cdb2f6bf9f1c8fdb5b02488415ca87af7531498cd27cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe5a06ade4f5b40c1cdb2f6bf9f1c8fdb5b02488415ca87af7531498cd27cab", kill_on_drop: false }`
[INFO] [stdout] 1fe5a06ade4f5b40c1cdb2f6bf9f1c8fdb5b02488415ca87af7531498cd27cab