[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#6f40082313d8374bdf962aba943a712d5322fae6 for pr-117967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatnipan%2Flearn-compilers-with-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/catnipan/learn-compilers-with-rust on toolchain 6f40082313d8374bdf962aba943a712d5322fae6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6f40082313d8374bdf962aba943a712d5322fae6" "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-4-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6f40082313d8374bdf962aba943a712d5322fae6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking catnipan/learn-compilers-with-rust against try#57fd74335bb14b59b719dc3cc5bc4257e73f33ce for pr-117967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatnipan%2Flearn-compilers-with-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/catnipan/learn-compilers-with-rust on toolchain 57fd74335bb14b59b719dc3cc5bc4257e73f33ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "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-4-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking catnipan/learn-compilers-with-rust against try#57fd74335bb14b59b719dc3cc5bc4257e73f33ce for pr-117967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcatnipan%2Flearn-compilers-with-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/catnipan/learn-compilers-with-rust on toolchain 57fd74335bb14b59b719dc3cc5bc4257e73f33ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "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-4-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9819c857736f6cea3d290fcc19777ab15b158dde2d61fa1931162fea0c1af31
[INFO] running `Command { std: "docker" "start" "-a" "f9819c857736f6cea3d290fcc19777ab15b158dde2d61fa1931162fea0c1af31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9819c857736f6cea3d290fcc19777ab15b158dde2d61fa1931162fea0c1af31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9819c857736f6cea3d290fcc19777ab15b158dde2d61fa1931162fea0c1af31", kill_on_drop: false }`
[INFO] [stdout] f9819c857736f6cea3d290fcc19777ab15b158dde2d61fa1931162fea0c1af31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e68d0804af0944fb2fac00b8ed97cb4b98b72a7a965f7d80ac5e5df57a753798
[INFO] running `Command { std: "docker" "start" "-a" "e68d0804af0944fb2fac00b8ed97cb4b98b72a7a965f7d80ac5e5df57a753798", 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 `AutomatonRunner` is never constructed
[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 items `new`, `is_dead`, `is_accept`, and `next` are never used
[INFO] [stdout]   --> src/automaton.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl <T: Automaton> AutomatonRunner<T> {
[INFO] [stdout]    | -------------------------------------- associated items in this implementation
[INFO] [stdout] 30 |   fn new(automaton: T) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |   fn is_dead(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |   fn is_accept(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |   fn next(&mut self, chr: char) {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Partition` is never constructed
[INFO] [stdout]   --> src/dfa.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Partition {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `split`, and `which_group` are never used
[INFO] [stdout]   --> src/dfa.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Partition {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 17 |   fn new(size: usize) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |   fn split(&mut self, group: usize, new_color: &[usize]) {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |   fn which_group(&self, id: usize) -> usize {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_at_least_two_elements` is never used
[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: method `state_minimization` is never used
[INFO] [stdout]   --> src/dfa.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl DFAOne {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 58 |   fn state_minimization(&self, input: &str) -> DFAOne {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_nfa_to_dfa` is never used
[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 `NFABasic` is never constructed
[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 `TransitionMapType` is never used
[INFO] [stdout]   --> src/nfa_regexp.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type TransitionMapType = HashMap<(usize, Option<char>), Vec<usize>>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NFAConstructor` is never constructed
[INFO] [stdout]   --> src/nfa_regexp.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct NFAConstructor {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/nfa_regexp.rs:20:6
[INFO] [stdout]     |
[INFO] [stdout] 19  | impl NFAConstructor {
[INFO] [stdout]     | ------------------- associated items in this implementation
[INFO] [stdout] 20  |   fn new() -> Self {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27  |   fn gen_new_state_idx(&mut self) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33  |   fn add_new_transition(&mut self, from: usize, by: Option<char>, to: usize) {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37  |   fn construct_singleton(&mut self, input: Option<char>) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47  |   fn construct_e(&mut self) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51  |   fn construct_single_char(&mut self, chr: char) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55  |   fn union(&mut self, nfa_a: NFABasic, nfa_b: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68  |   fn concat(&mut self, nfa_a: NFABasic, nfa_b: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76  |   fn closure_basic(
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 99  |   fn closure(&mut self, nfa: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |   fn closure_plus(&mut self, nfa: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |   fn question_mark(&mut self, nfa: NFABasic) -> NFABasic {
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StackFrame` is never constructed
[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 `from_regexp` is never used
[INFO] [stdout]    --> src/nfa_regexp.rs:118:10
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl NFAOne {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 118 |   pub fn from_regexp(reg_exp: &str) -> Self {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Closure`, `Concat`, and `Union` are never constructed
[INFO] [stdout]   --> src/dfa_regexp.rs:8:3
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum NodeType {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 8  |   Closure,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 9  |   Concat,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout] 10 |   Union,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NodeType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Endmarker`, `LeafEmpty`, `Leaf`, `Unary`, and `Binary` are never constructed
[INFO] [stdout]   --> src/dfa_regexp.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum RegASTNode {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 15 |   Endmarker,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 16 |   LeafEmpty,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 17 |   Leaf(char),
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 18 |   Unary { node_type: NodeType, child: Box<RegASTNode> },
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 19 |   Binary { node_type: NodeType, left_child: Box<RegASTNode>, right_child: Box<RegASTNode> },
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RegASTNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StackFrame` is never constructed
[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 `parse_ast_regexp` is never used
[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: fields `pos_idx`, `follow_pos`, `pos_char_map`, and `end_idx` are never read
[INFO] [stdout]    --> src/dfa_regexp.rs:151:3
[INFO] [stdout]     |
[INFO] [stdout] 150 | struct DFABuilder {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 151 |   pos_idx: usize,
[INFO] [stdout]     |   ^^^^^^^
[INFO] [stdout] 152 |   follow_pos: Vec<HashSet<usize>>,
[INFO] [stdout]     |   ^^^^^^^^^^
[INFO] [stdout] 153 |   pos_char_map: Vec<char>,
[INFO] [stdout]     |   ^^^^^^^^^^^^
[INFO] [stdout] 154 |   end_idx: Option<usize>,
[INFO] [stdout]     |   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DFABuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `gen_new_idx`, `acquire_new_pos_idx`, `acquire_end_pos_idx`, and `register_new_follow_pos` are never used
[INFO] [stdout]    --> src/dfa_regexp.rs:158:6
[INFO] [stdout]     |
[INFO] [stdout] 157 | impl DFABuilder {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 158 |   fn new() -> Self {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |   fn gen_new_idx(&mut self) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |   fn acquire_new_pos_idx(&mut self, chr: char) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |   fn acquire_end_pos_idx(&mut self) -> usize {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[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: fields `nullable`, `first_pos`, and `last_pos` are never read
[INFO] [stdout]    --> src/dfa_regexp.rs:199:3
[INFO] [stdout]     |
[INFO] [stdout] 198 | struct TraverseInfo {
[INFO] [stdout]     |        ------------ fields in this struct
[INFO] [stdout] 199 |   nullable: bool,
[INFO] [stdout]     |   ^^^^^^^^
[INFO] [stdout] 200 |   first_pos: Vec<usize>,
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout] 201 |   last_pos: Vec<usize>,
[INFO] [stdout]     |   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TraverseInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_empty` and `new_singleton` are never used
[INFO] [stdout]    --> src/dfa_regexp.rs:205:6
[INFO] [stdout]     |
[INFO] [stdout] 204 | impl TraverseInfo {
[INFO] [stdout]     | ----------------- associated functions in this implementation
[INFO] [stdout] 205 |   fn new_empty() -> Self {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |   fn new_singleton(idx: usize) -> Self {
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_union` is never used
[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 `from_regexp` is never used
[INFO] [stdout]    --> src/dfa_regexp.rs:228:10
[INFO] [stdout]     |
[INFO] [stdout] 227 | impl DFAOne {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 228 |   pub fn from_regexp(reg_exp: &str, input: &str) -> DFAOne {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[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]   |          variants in this enum
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RegOp` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_priority` is never used
[INFO] [stdout]  --> src/regop.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl RegOp {
[INFO] [stdout]   | ---------- method in this implementation
[INFO] [stdout] 5 |   pub fn get_priority(&self) -> i32 {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/escape_chars.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<'a> EscapeChars<'a> {
[INFO] [stdout]   | ------------------------ associated function in this implementation
[INFO] [stdout] 6 |   pub fn new(char_iterator: Chars<'a>) -> Self {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_chr` is never used
[INFO] [stdout]   --> src/escape_chars.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl MaybeEsc {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 18 |   pub fn get_chr(&self) -> char {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AutomatonRunner` is never constructed
[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 items `new`, `is_dead`, `is_accept`, and `next` are never used
[INFO] [stdout]   --> src/automaton.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl <T: Automaton> AutomatonRunner<T> {
[INFO] [stdout]    | -------------------------------------- associated items in this implementation
[INFO] [stdout] 30 |   fn new(automaton: T) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |   fn is_dead(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |   fn is_accept(&self) -> bool {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |   fn next(&mut self, chr: char) {
[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 0.15s
[INFO] running `Command { std: "docker" "inspect" "e68d0804af0944fb2fac00b8ed97cb4b98b72a7a965f7d80ac5e5df57a753798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68d0804af0944fb2fac00b8ed97cb4b98b72a7a965f7d80ac5e5df57a753798", kill_on_drop: false }`
[INFO] [stdout] e68d0804af0944fb2fac00b8ed97cb4b98b72a7a965f7d80ac5e5df57a753798