[INFO] cloning repository https://github.com/nvasudevan/transitiond
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nvasudevan/transitiond" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnvasudevan%2Ftransitiond", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnvasudevan%2Ftransitiond'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c61147c982fd487aafacd19e36beee2c0433090
[INFO] checking nvasudevan/transitiond against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnvasudevan%2Ftransitiond" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nvasudevan/transitiond on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nvasudevan/transitiond
[INFO] finished tweaking git repo https://github.com/nvasudevan/transitiond
[INFO] tweaked toml for git repo https://github.com/nvasudevan/transitiond written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/nvasudevan/transitiond already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0da45f854aa8080755065b1c1c65398601dd5f8f8ea9191009e0b33ec61613a6
[INFO] running `Command { std: "docker" "start" "-a" "0da45f854aa8080755065b1c1c65398601dd5f8f8ea9191009e0b33ec61613a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0da45f854aa8080755065b1c1c65398601dd5f8f8ea9191009e0b33ec61613a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0da45f854aa8080755065b1c1c65398601dd5f8f8ea9191009e0b33ec61613a6", kill_on_drop: false }`
[INFO] [stdout] 0da45f854aa8080755065b1c1c65398601dd5f8f8ea9191009e0b33ec61613a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30c7eaf7f5bc85313a825f7ad7c46c950be67a789adccda46d7b3521dc19e313
[INFO] running `Command { std: "docker" "start" "-a" "30c7eaf7f5bc85313a825f7ad7c46c950be67a789adccda46d7b3521dc19e313", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling pyo3 v0.13.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling pyo3-macros-backend v0.13.2
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling pyo3-macros v0.13.2
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking transitiond v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg/graph.rs:283:13
[INFO] [stdout]     |
[INFO] [stdout] 283 |         let mut node_id = 0;
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RULE_END_MARKER`
[INFO] [stdout]  --> src/cfg/parse.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const RULE_END_MARKER: char = ';';
[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/cfg/parse.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new(msg: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CfgParser`
[INFO] [stdout]   --> src/cfg/parse.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub(crate) struct CfgParser {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg/parse.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new(tokens: Vec<char>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_start_symbol`
[INFO] [stdout]   --> src/cfg/parse.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn add_start_symbol(&mut self, start_symbol: String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `term_token_regex`
[INFO] [stdout]   --> src/cfg/parse.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn term_token_regex(&self, s: &str) -> Option<TermSymbol> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `non_term_token_regex`
[INFO] [stdout]   --> src/cfg/parse.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn non_term_token_regex(&self, s: &str) -> Option<NonTermSymbol> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_lex_symbols`
[INFO] [stdout]   --> src/cfg/parse.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn parse_lex_symbols(&self, s: &str) -> Option<LexSymbol> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `header_directives`
[INFO] [stdout]   --> src/cfg/parse.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn header_directives(&mut self, i: usize) -> Result<usize, CfgParseError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `footer_tag`
[INFO] [stdout]    --> src/cfg/parse.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn footer_tag(&self, i: usize) -> Result<(), CfgParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rule_end_marker`
[INFO] [stdout]    --> src/cfg/parse.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn rule_end_marker(&self, i: usize) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_alt`
[INFO] [stdout]    --> src/cfg/parse.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn parse_alt(&self, s: &str) -> Result<Vec<LexSymbol>, CfgParseError> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rule_rhs_regex`
[INFO] [stdout]    --> src/cfg/parse.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 175 |     fn rule_rhs_regex(&self, s: &str) -> Result<Vec<RuleAlt>, CfgParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rule_regex`
[INFO] [stdout]    --> src/cfg/parse.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn rule_regex<'a>(&self, s: &'a str) -> Result<(&'a str, &'a str), CfgParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rule`
[INFO] [stdout]    --> src/cfg/parse.rs:237:8
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn rule(&self, i: usize) -> Result<(usize, CfgRule), CfgParseError> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_rules`
[INFO] [stdout]    --> src/cfg/parse.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 |     fn parse_rules(&mut self, i: usize) -> Result<(usize, Vec<CfgRule>), CfgParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]    --> src/cfg/parse.rs:280:8
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn run(&mut self) -> Result<Cfg, CfgParseError> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse`
[INFO] [stdout]    --> src/cfg/parse.rs:289:15
[INFO] [stdout]     |
[INFO] [stdout] 289 | pub(crate) fn parse(cfgp: &str) -> Result<Cfg, CfgParseError> {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg/graph.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub(crate) fn new(lhs: String, item: Vec<LexSymbol>, index: usize, node_id: usize) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Derive`
[INFO] [stdout]   --> src/cfg/graph.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Derive,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Shift`
[INFO] [stdout]   --> src/cfg/graph.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     Shift,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Reduce`
[INFO] [stdout]   --> src/cfg/graph.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     Reduce,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg/graph.rs:98:19
[INFO] [stdout]    |
[INFO] [stdout] 98 |     pub(crate) fn new(source: Rc<Node>,
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `derive`
[INFO] [stdout]    --> src/cfg/graph.rs:110:19
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub(crate) fn derive(source: Rc<Node>, target: Rc<Node>) -> Self {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reduce`
[INFO] [stdout]    --> src/cfg/graph.rs:119:19
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub(crate) fn reduce(source: Rc<Node>, target: Rc<Node>) -> Self {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/cfg/graph.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn new(cfg: Cfg) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_symbol`
[INFO] [stdout]    --> src/cfg/graph.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn next_symbol(&self, s: &str) -> Option<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_cycle`
[INFO] [stdout]    --> src/cfg/graph.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 |     fn check_cycle(&self, parent: &Rc<Node>, node: &Rc<Node>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_edge`
[INFO] [stdout]    --> src/cfg/graph.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 |     fn build_edge(&self, nt: &str, parent: &Rc<Node>, mut node_id: usize) -> Option<(Vec<Rc<Node>>, Vec<Edge>, Vec<Rc<Node>>)> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_edging`
[INFO] [stdout]    --> src/cfg/graph.rs:282:19
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub(crate) fn start_edging(&self) -> (Vec<Rc<Node>>, Vec<Edge>) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `graph`
[INFO] [stdout]    --> src/cfg/graph.rs:321:15
[INFO] [stdout]     |
[INFO] [stdout] 321 | pub(crate) fn graph(cfgp: &str) -> Result<CfgGraph, CfgParseError> {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NonTerminal`
[INFO] [stdout]  --> src/cfg/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     NonTerminal,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Terminal`
[INFO] [stdout]   --> src/cfg/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Terminal,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Epsilon`
[INFO] [stdout]   --> src/cfg/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Epsilon,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg/mod.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub(crate) fn new(tok: String) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg/mod.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub(crate) fn new(tok: String) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cfg/mod.rs:88:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub(crate) fn new() -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NonTerm`
[INFO] [stdout]    --> src/cfg/mod.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 |     NonTerm(NonTermSymbol),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Term`
[INFO] [stdout]    --> src/cfg/mod.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     Term(TermSymbol),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Epsilon`
[INFO] [stdout]    --> src/cfg/mod.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     Epsilon(EpsilonSymbol),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/cfg/mod.rs:158:19
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub(crate) fn new(lex_symbols: Vec<LexSymbol>) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/cfg/mod.rs:187:19
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub(crate) fn new(lhs: String, rhs: Vec<RuleAlt>) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/cfg/mod.rs:215:19
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub(crate) fn new(rules: Vec<CfgRule>) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_rule`
[INFO] [stdout]    --> src/cfg/mod.rs:221:19
[INFO] [stdout]     |
[INFO] [stdout] 221 |     pub(crate) fn start_rule(&self) -> &CfgRule {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_rule`
[INFO] [stdout]    --> src/cfg/mod.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |     pub(crate) fn get_rule(&self, name: &str) -> Option<&CfgRule> {
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `terminals_only_alts`
[INFO] [stdout]    --> src/cfg/mod.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub(crate) fn terminals_only_alts(&self) -> Vec<(&str, &RuleAlt)> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alt_start_with_terminals`
[INFO] [stdout]    --> src/cfg/mod.rs:255:19
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub(crate) fn alt_start_with_terminals(&self) -> Vec<(&str, &RuleAlt, i8)> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alt_start_with_non_terminals`
[INFO] [stdout]    --> src/cfg/mod.rs:281:19
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub(crate) fn alt_start_with_non_terminals(&self) -> Vec<(&str, &RuleAlt)> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cfg/graph.rs:283:13
[INFO] [stdout]     |
[INFO] [stdout] 283 |         let mut node_id = 0;
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start_symbol`
[INFO] [stdout]   --> src/cfg/parse.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     start_symbol: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_symbol`
[INFO] [stdout]    --> src/cfg/graph.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn next_symbol(&self, s: &str) -> Option<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_rule`
[INFO] [stdout]    --> src/cfg/mod.rs:221:19
[INFO] [stdout]     |
[INFO] [stdout] 221 |     pub(crate) fn start_rule(&self) -> &CfgRule {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `terminals_only_alts`
[INFO] [stdout]    --> src/cfg/mod.rs:235:19
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub(crate) fn terminals_only_alts(&self) -> Vec<(&str, &RuleAlt)> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alt_start_with_terminals`
[INFO] [stdout]    --> src/cfg/mod.rs:255:19
[INFO] [stdout]     |
[INFO] [stdout] 255 |     pub(crate) fn alt_start_with_terminals(&self) -> Vec<(&str, &RuleAlt, i8)> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `alt_start_with_non_terminals`
[INFO] [stdout]    --> src/cfg/mod.rs:281:19
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub(crate) fn alt_start_with_non_terminals(&self) -> Vec<(&str, &RuleAlt)> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.89s
[INFO] running `Command { std: "docker" "inspect" "30c7eaf7f5bc85313a825f7ad7c46c950be67a789adccda46d7b3521dc19e313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30c7eaf7f5bc85313a825f7ad7c46c950be67a789adccda46d7b3521dc19e313", kill_on_drop: false }`
[INFO] [stdout] 30c7eaf7f5bc85313a825f7ad7c46c950be67a789adccda46d7b3521dc19e313