[INFO] cloning repository https://github.com/catnipan/learn-compilers-with-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/catnipan/learn-compilers-with-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatnipan%2Flearn-compilers-with-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatnipan%2Flearn-compilers-with-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d55f3963aefd3fa5a55fa90494fcdf8dfb746fe6
[INFO] checking catnipan/learn-compilers-with-rust against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatnipan%2Flearn-compilers-with-rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/catnipan/learn-compilers-with-rust on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/catnipan/learn-compilers-with-rust
[INFO] finished tweaking git repo https://github.com/catnipan/learn-compilers-with-rust
[INFO] tweaked toml for git repo https://github.com/catnipan/learn-compilers-with-rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/catnipan/learn-compilers-with-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97c243ed25f2e9665201b78db90072555e4fa3cc729b8033915fe47b636e9b6e
[INFO] running `Command { std: "docker" "start" "-a" "97c243ed25f2e9665201b78db90072555e4fa3cc729b8033915fe47b636e9b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97c243ed25f2e9665201b78db90072555e4fa3cc729b8033915fe47b636e9b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c243ed25f2e9665201b78db90072555e4fa3cc729b8033915fe47b636e9b6e", kill_on_drop: false }`
[INFO] [stdout] 97c243ed25f2e9665201b78db90072555e4fa3cc729b8033915fe47b636e9b6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ec7e624dd606049599b1f731dbfc3fee03ed11d4751214c6727db04c4971b2b
[INFO] running `Command { std: "docker" "start" "-a" "5ec7e624dd606049599b1f731dbfc3fee03ed11d4751214c6727db04c4971b2b", kill_on_drop: false }`
[INFO] [stderr]     Checking learn-compilers-with-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::automaton::Automaton`
[INFO] [stdout]  --> src/nfa_regexp.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::automaton::Automaton;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `group`
[INFO] [stdout]    --> src/dfa.rs:103:10
[INFO] [stdout]     |
[INFO] [stdout] 103 |     for (group, old_ids) in parti.group_ids_map.iter().enumerate() {
[INFO] [stdout]     |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_group`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `group`
[INFO] [stdout]    --> src/dfa.rs:103:10
[INFO] [stdout]     |
[INFO] [stdout] 103 |     for (group, old_ids) in parti.group_ids_map.iter().enumerate() {
[INFO] [stdout]     |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_group`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `AutomatonRunner`
[INFO] [stdout]   --> src/automaton.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct AutomatonRunner<T: Automaton> {
[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: `new`
[INFO] [stdout]   --> src/automaton.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 |   fn new(automaton: T) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_dead`
[INFO] [stdout]   --> src/automaton.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 |   fn is_dead(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_accept`
[INFO] [stdout]   --> src/automaton.rs:41:6
[INFO] [stdout]    |
[INFO] [stdout] 41 |   fn is_accept(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/automaton.rs:45:6
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn next(&mut self, chr: char) {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `AutomatonRunner`
[INFO] [stdout]   --> src/automaton.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct AutomatonRunner<T: Automaton> {
[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: `new`
[INFO] [stdout]   --> src/automaton.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 |   fn new(automaton: T) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_dead`
[INFO] [stdout]   --> src/automaton.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 |   fn is_dead(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_accept`
[INFO] [stdout]   --> src/automaton.rs:41:6
[INFO] [stdout]    |
[INFO] [stdout] 41 |   fn is_accept(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/automaton.rs:45:6
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn next(&mut self, chr: char) {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Partition`
[INFO] [stdout]   --> src/dfa.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Partition {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/dfa.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 |   fn new(size: usize) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `split`
[INFO] [stdout]   --> src/dfa.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 |   fn split(&mut self, group: usize, new_color: &[usize]) {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `which_group`
[INFO] [stdout]   --> src/dfa.rs:43:6
[INFO] [stdout]    |
[INFO] [stdout] 43 |   fn which_group(&self, id: usize) -> usize {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `has_at_least_two_elements`
[INFO] [stdout]   --> src/dfa.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn has_at_least_two_elements(color: &[usize]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `state_minimization`
[INFO] [stdout]   --> src/dfa.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 |   fn state_minimization(&self, input: &str) -> DFAOne {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `convert_nfa_to_dfa`
[INFO] [stdout]  --> src/convert_nfa_to_dfa.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn convert_nfa_to_dfa(nfa: NFAOne, input_set: &str) -> DFAOne {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `NFABasic`
[INFO] [stdout]  --> src/nfa_regexp.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct NFABasic {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `TransitionMapType`
[INFO] [stdout]   --> src/nfa_regexp.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type TransitionMapType = HashMap<(usize, Option<char>), Vec<usize>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `NFAConstructor`
[INFO] [stdout]   --> src/nfa_regexp.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct NFAConstructor {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/nfa_regexp.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 |   fn new() -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gen_new_state_idx`
[INFO] [stdout]   --> src/nfa_regexp.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn gen_new_state_idx(&mut self) -> usize {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_new_transition`
[INFO] [stdout]   --> src/nfa_regexp.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 |   fn add_new_transition(&mut self, from: usize, by: Option<char>, to: usize) {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `construct_singleton`
[INFO] [stdout]   --> src/nfa_regexp.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 |   fn construct_singleton(&mut self, input: Option<char>) -> NFABasic {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `construct_e`
[INFO] [stdout]   --> src/nfa_regexp.rs:47:6
[INFO] [stdout]    |
[INFO] [stdout] 47 |   fn construct_e(&mut self) -> NFABasic {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `construct_single_char`
[INFO] [stdout]   --> src/nfa_regexp.rs:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 |   fn construct_single_char(&mut self, chr: char) -> NFABasic {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `union`
[INFO] [stdout]   --> src/nfa_regexp.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |   fn union(&mut self, nfa_a: NFABasic, nfa_b: NFABasic) -> NFABasic {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `concat`
[INFO] [stdout]   --> src/nfa_regexp.rs:68:6
[INFO] [stdout]    |
[INFO] [stdout] 68 |   fn concat(&mut self, nfa_a: NFABasic, nfa_b: NFABasic) -> NFABasic {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `closure_basic`
[INFO] [stdout]   --> src/nfa_regexp.rs:76:6
[INFO] [stdout]    |
[INFO] [stdout] 76 |   fn closure_basic(
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `closure`
[INFO] [stdout]   --> src/nfa_regexp.rs:99:6
[INFO] [stdout]    |
[INFO] [stdout] 99 |   fn closure(&mut self, nfa: NFABasic) -> NFABasic {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `closure_plus`
[INFO] [stdout]    --> src/nfa_regexp.rs:103:6
[INFO] [stdout]     |
[INFO] [stdout] 103 |   fn closure_plus(&mut self, nfa: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `question_mark`
[INFO] [stdout]    --> src/nfa_regexp.rs:107:6
[INFO] [stdout]     |
[INFO] [stdout] 107 |   fn question_mark(&mut self, nfa: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StackFrame`
[INFO] [stdout]    --> src/nfa_regexp.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | struct StackFrame {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_regexp`
[INFO] [stdout]    --> src/nfa_regexp.rs:118:10
[INFO] [stdout]     |
[INFO] [stdout] 118 |   pub fn from_regexp(reg_exp: &str) -> Self {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reduce_frame`
[INFO] [stdout]    --> src/nfa_regexp.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     fn reduce_frame(frame: &mut StackFrame, nfa_constructor: &mut NFAConstructor, new_op: RegOp) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Closure`
[INFO] [stdout]  --> src/dfa_regexp.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   Closure,
[INFO] [stdout]   |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Concat`
[INFO] [stdout]  --> src/dfa_regexp.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   Concat,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Union`
[INFO] [stdout]   --> src/dfa_regexp.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Union,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Endmarker`
[INFO] [stdout]   --> src/dfa_regexp.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   Endmarker,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LeafEmpty`
[INFO] [stdout]   --> src/dfa_regexp.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   LeafEmpty,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Leaf`
[INFO] [stdout]   --> src/dfa_regexp.rs:17:3
[INFO] [stdout]    |
[INFO] [stdout] 17 |   Leaf(char),
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unary`
[INFO] [stdout]   --> src/dfa_regexp.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 18 |   Unary { node_type: NodeType, child: Box<RegASTNode> },
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Binary`
[INFO] [stdout]   --> src/dfa_regexp.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Binary { node_type: NodeType, left_child: Box<RegASTNode>, right_child: Box<RegASTNode> },
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StackFrame`
[INFO] [stdout]   --> src/dfa_regexp.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct StackFrame {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_ast_regexp`
[INFO] [stdout]   --> src/dfa_regexp.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn parse_ast_regexp(reg_exp: &str) -> RegASTNode {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/dfa_regexp.rs:158:6
[INFO] [stdout]     |
[INFO] [stdout] 158 |   fn new() -> Self {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gen_new_idx`
[INFO] [stdout]    --> src/dfa_regexp.rs:167:6
[INFO] [stdout]     |
[INFO] [stdout] 167 |   fn gen_new_idx(&mut self) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `acquire_new_pos_idx`
[INFO] [stdout]    --> src/dfa_regexp.rs:174:6
[INFO] [stdout]     |
[INFO] [stdout] 174 |   fn acquire_new_pos_idx(&mut self, chr: char) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `acquire_end_pos_idx`
[INFO] [stdout]    --> src/dfa_regexp.rs:180:6
[INFO] [stdout]     |
[INFO] [stdout] 180 |   fn acquire_end_pos_idx(&mut self) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_new_follow_pos`
[INFO] [stdout]    --> src/dfa_regexp.rs:188:6
[INFO] [stdout]     |
[INFO] [stdout] 188 |   fn register_new_follow_pos(&mut self, ns: &[usize], fs: &[usize]) {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]    --> src/dfa_regexp.rs:205:6
[INFO] [stdout]     |
[INFO] [stdout] 205 |   fn new_empty() -> Self {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_singleton`
[INFO] [stdout]    --> src/dfa_regexp.rs:213:6
[INFO] [stdout]     |
[INFO] [stdout] 213 |   fn new_singleton(idx: usize) -> Self {
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_union`
[INFO] [stdout]    --> src/dfa_regexp.rs:223:4
[INFO] [stdout]     |
[INFO] [stdout] 223 | fn set_union(set_a: Vec<usize>, set_b: Vec<usize>) -> Vec<usize> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_regexp`
[INFO] [stdout]    --> src/dfa_regexp.rs:228:10
[INFO] [stdout]     |
[INFO] [stdout] 228 |   pub fn from_regexp(reg_exp: &str, input: &str) -> DFAOne {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traverse_ast`
[INFO] [stdout]    --> src/dfa_regexp.rs:229:8
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn traverse_ast(node: &RegASTNode, builder: &mut DFABuilder) -> TraverseInfo {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eof`
[INFO] [stdout]  --> src/regop.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Paren`
[INFO] [stdout]  --> src/regop.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Union`
[INFO] [stdout]  --> src/regop.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Concat`
[INFO] [stdout]  --> src/regop.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Closure`
[INFO] [stdout]  --> src/regop.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]  --> src/regop.rs:2:54
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                                                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Question`
[INFO] [stdout]  --> src/regop.rs:2:60
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum RegOp { Eof, Paren, Union, Concat, Closure, Plus, Question }
[INFO] [stdout]   |                                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_priority`
[INFO] [stdout]  --> src/regop.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |   pub fn get_priority(&self) -> i32 {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/escape_chars.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |   pub fn new(char_iterator: Chars<'a>) -> Self {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_chr`
[INFO] [stdout]   --> src/escape_chars.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn get_chr(&self) -> char {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 62 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "5ec7e624dd606049599b1f731dbfc3fee03ed11d4751214c6727db04c4971b2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ec7e624dd606049599b1f731dbfc3fee03ed11d4751214c6727db04c4971b2b", kill_on_drop: false }`
[INFO] [stdout] 5ec7e624dd606049599b1f731dbfc3fee03ed11d4751214c6727db04c4971b2b