[INFO] cloning repository https://github.com/nate-droid/fox_lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nate-droid/fox_lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnate-droid%2Ffox_lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnate-droid%2Ffox_lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c83e70803cf1812497535ecb99d1c560f571713
[INFO] testing nate-droid/fox_lang against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnate-droid%2Ffox_lang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nate-droid/fox_lang on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nate-droid/fox_lang
[INFO] finished tweaking git repo https://github.com/nate-droid/fox_lang
[INFO] tweaked toml for git repo https://github.com/nate-droid/fox_lang written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nate-droid/fox_lang 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" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83b818cce4d41fef50deea3be81224f38903b575155a28c491b9d0079c3ea50f
[INFO] running `Command { std: "docker" "start" "-a" "83b818cce4d41fef50deea3be81224f38903b575155a28c491b9d0079c3ea50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83b818cce4d41fef50deea3be81224f38903b575155a28c491b9d0079c3ea50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83b818cce4d41fef50deea3be81224f38903b575155a28c491b9d0079c3ea50f", kill_on_drop: false }`
[INFO] [stdout] 83b818cce4d41fef50deea3be81224f38903b575155a28c491b9d0079c3ea50f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59f0d976af9190d9cf3152d292ce847781b581e6461c62a471b923a5c396823b
[INFO] running `Command { std: "docker" "start" "-a" "59f0d976af9190d9cf3152d292ce847781b581e6461c62a471b923a5c396823b", kill_on_drop: false }`
[INFO] [stderr]    Compiling foxlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cut.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/parser.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             panic!("this needs to be parsed as an expression");
[INFO] [stdout]     |             -------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 417 |             return Err(ParseError::UnexpectedToken);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/cut.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     match node.clone() {
[INFO] [stdout] 133 | |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout] 134 | |             println!("Found a unary expression");
[INFO] [stdout] 135 | |             match node.operator() {
[INFO] [stdout] ...   |
[INFO] [stdout] 169 | |         }
[INFO] [stdout] 170 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 171 |
[INFO] [stdout] 172 |       Err(ReduceError::EmptyNode)
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:72:54
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:77:47
[INFO] [stdout]    |
[INFO] [stdout] 77 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Node::Identifier { value } => { false }
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:92:54
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:95:47
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:98:32
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Node::Identifier { value } => {
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_index`
[INFO] [stdout]   --> src/cut.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let left_index = self.add_step(reduce_left.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_index`
[INFO] [stdout]   --> src/cut.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let right_index = self.add_step(reduce_right.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout]     |                                ^^^^^^^^-
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]     |                                        ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cut.rs:163:27
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Node::Identifier {value} => {
[INFO] [stdout]     |                           ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `evaluate` is never used
[INFO] [stdout]   --> src/parser.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 70 |     fn evaluate(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Axiom` is never constructed
[INFO] [stdout]  --> src/cut.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Axiom {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_step`, `solve`, and `print_steps` are never used
[INFO] [stdout]   --> src/cut.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Axiom {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(name: String, hypothesises: Vec<(String, String)>, initial_assertion: String, parser: Parser) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn add_step(&mut self, node: Node) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn solve(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn print_steps(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Step` is never constructed
[INFO] [stdout]   --> src/cut.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub(crate) struct Step {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/cut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl Step {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 100 |     pub(crate) fn new(node: Node) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `EmptyNode` and `Unimplemented` are never constructed
[INFO] [stdout]    --> src/cut.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub enum ReduceError {
[INFO] [stdout]     |          ----------- variants in this enum
[INFO] [stdout] 118 |     EmptyNode,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 119 |     Unimplemented,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ReduceError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reduce` is never used
[INFO] [stdout]    --> src/cut.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn reduce(node: Node) -> Result<(Node, Node), ReduceError>{
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]  --> src/combinator.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_literal` is never used
[INFO] [stdout]  --> src/combinator.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn match_literal(expected: &'static str)
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cut.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/parser.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             panic!("this needs to be parsed as an expression");
[INFO] [stdout]     |             -------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 417 |             return Err(ParseError::UnexpectedToken);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/cut.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     match node.clone() {
[INFO] [stdout] 133 | |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout] 134 | |             println!("Found a unary expression");
[INFO] [stdout] 135 | |             match node.operator() {
[INFO] [stdout] ...   |
[INFO] [stdout] 169 | |         }
[INFO] [stdout] 170 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 171 |
[INFO] [stdout] 172 |       Err(ReduceError::EmptyNode)
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:72:54
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:77:47
[INFO] [stdout]    |
[INFO] [stdout] 77 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Node::Identifier { value } => { false }
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:92:54
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:95:47
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:98:32
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Node::Identifier { value } => {
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_index`
[INFO] [stdout]   --> src/cut.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let left_index = self.add_step(reduce_left.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_index`
[INFO] [stdout]   --> src/cut.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let right_index = self.add_step(reduce_right.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout]     |                                ^^^^^^^^-
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]     |                                        ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cut.rs:163:27
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Node::Identifier {value} => {
[INFO] [stdout]     |                           ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `kind` are never read
[INFO] [stdout]  --> src/lexer.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Token {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     pub value: String,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 6 |     pub kind: TokenKind,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BinaryOperator`, `UnaryOperator`, `Whitespace`, and `And` are never constructed
[INFO] [stdout]   --> src/lexer.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum TokenKind {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     BinaryOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     UnaryOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     Whitespace,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     And,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_binary_operator` and `is_unary_operator` are never used
[INFO] [stdout]   --> src/lexer.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl TokenKind {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 58 |     pub fn is_binary_operator(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn is_unary_operator(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lexer.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl DefaultLexer {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 83 |     pub fn new(input: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]  --> src/parser.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Parser {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `tokenize`, `current_token`, and `tokens` are never used
[INFO] [stdout]   --> src/parser.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait Lexer {
[INFO] [stdout]    |           ----- methods in this trait
[INFO] [stdout] 13 |     fn tokenize(&mut self);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 14 |     fn current_token(&self) -> Token;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn tokens(&self) -> Vec<Token>;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `UnexpectedToken`, `EmptyNode`, `AccessOutOfBoundsToken`, `UnhandledBehaviour`, and `UnclosedParenthesis` are never constructed
[INFO] [stdout]   --> src/parser.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum ParseError {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 31 |     UnexpectedToken,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 32 |     EmptyNode, // this is when there is no node to parse
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 33 |     AccessOutOfBoundsToken,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 34 |     UnhandledBehaviour,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 35 |     UnclosedParenthesis,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]   --> src/parser.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub enum Node {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `evaluate`, `operator`, `left`, `right`, and `to_string` are never used
[INFO] [stdout]    --> src/parser.rs:70:8
[INFO] [stdout]     |
[INFO] [stdout] 69  | impl Node {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] 70  |     fn evaluate(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90  |     pub fn operator(&self) -> TokenKind {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn left(&self) -> Option<&Box<Node>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     pub fn right(&self) -> Option<&Box<Node>> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub fn to_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/parser.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | impl Parser {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 143 |     pub fn new(input: String) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     pub fn new_mm(input: String) -> Self {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     pub fn parse(&mut self) -> Result<Node, ParseError> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 |     fn advance(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn consume(&mut self, expect: TokenKind) -> Result<(), ParseError> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 |     fn peek(&self) -> Token {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 243 |     fn current(&self) -> Token {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 247 |     fn parse_expression(&mut self) -> Result<Node, ParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 369 |     fn is_unary_expression(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 373 |     fn is_binary_expression(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 381 |     fn parse_identifier(&mut self) -> Result<Node, ParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 396 |     fn parse_unary_expression(&mut self) -> Result<Node, ParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 414 |     fn parse_binary_expression(&mut self) -> Result<Node, ParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 463 |     pub fn dump_state(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/metamath_lexer.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl MetaMathLexer {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub fn new(input: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Axiom` is never constructed
[INFO] [stdout]  --> src/cut.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Axiom {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_step`, `solve`, and `print_steps` are never used
[INFO] [stdout]   --> src/cut.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Axiom {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(name: String, hypothesises: Vec<(String, String)>, initial_assertion: String, parser: Parser) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn add_step(&mut self, node: Node) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn solve(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn print_steps(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Step` is never constructed
[INFO] [stdout]   --> src/cut.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub(crate) struct Step {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/cut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl Step {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 100 |     pub(crate) fn new(node: Node) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `EmptyNode` and `Unimplemented` are never constructed
[INFO] [stdout]    --> src/cut.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub enum ReduceError {
[INFO] [stdout]     |          ----------- variants in this enum
[INFO] [stdout] 118 |     EmptyNode,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 119 |     Unimplemented,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ReduceError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reduce` is never used
[INFO] [stdout]    --> src/cut.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn reduce(node: Node) -> Result<(Node, Node), ReduceError>{
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]  --> src/combinator.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_literal` is never used
[INFO] [stdout]  --> src/combinator.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn match_literal(expected: &'static str)
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "59f0d976af9190d9cf3152d292ce847781b581e6461c62a471b923a5c396823b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59f0d976af9190d9cf3152d292ce847781b581e6461c62a471b923a5c396823b", kill_on_drop: false }`
[INFO] [stdout] 59f0d976af9190d9cf3152d292ce847781b581e6461c62a471b923a5c396823b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc4bbdf5f94de182f3450a896a9d2be0fab050f13ec16b60c52053c6b9b852d1
[INFO] running `Command { std: "docker" "start" "-a" "fc4bbdf5f94de182f3450a896a9d2be0fab050f13ec16b60c52053c6b9b852d1", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cut.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/parser.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             panic!("this needs to be parsed as an expression");
[INFO] [stdout]     |             -------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 417 |             return Err(ParseError::UnexpectedToken);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/cut.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     match node.clone() {
[INFO] [stdout] 133 | |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout] 134 | |             println!("Found a unary expression");
[INFO] [stdout] 135 | |             match node.operator() {
[INFO] [stdout] ...   |
[INFO] [stdout] 169 | |         }
[INFO] [stdout] 170 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 171 |
[INFO] [stdout] 172 |       Err(ReduceError::EmptyNode)
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:72:54
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:77:47
[INFO] [stdout]    |
[INFO] [stdout] 77 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Node::Identifier { value } => { false }
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:92:54
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:95:47
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:98:32
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Node::Identifier { value } => {
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_index`
[INFO] [stdout]   --> src/cut.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let left_index = self.add_step(reduce_left.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_index`
[INFO] [stdout]   --> src/cut.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let right_index = self.add_step(reduce_right.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout]     |                                ^^^^^^^^-
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]     |                                        ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cut.rs:163:27
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Node::Identifier {value} => {
[INFO] [stdout]     |                           ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `evaluate` is never used
[INFO] [stdout]   --> src/parser.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 70 |     fn evaluate(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Axiom` is never constructed
[INFO] [stdout]  --> src/cut.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Axiom {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_step`, `solve`, and `print_steps` are never used
[INFO] [stdout]   --> src/cut.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Axiom {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(name: String, hypothesises: Vec<(String, String)>, initial_assertion: String, parser: Parser) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn add_step(&mut self, node: Node) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn solve(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn print_steps(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Step` is never constructed
[INFO] [stdout]   --> src/cut.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub(crate) struct Step {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/cut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl Step {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 100 |     pub(crate) fn new(node: Node) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `EmptyNode` and `Unimplemented` are never constructed
[INFO] [stdout]    --> src/cut.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub enum ReduceError {
[INFO] [stdout]     |          ----------- variants in this enum
[INFO] [stdout] 118 |     EmptyNode,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 119 |     Unimplemented,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ReduceError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling foxlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `reduce` is never used
[INFO] [stdout]    --> src/cut.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn reduce(node: Node) -> Result<(Node, Node), ReduceError>{
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]  --> src/combinator.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_literal` is never used
[INFO] [stdout]  --> src/combinator.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn match_literal(expected: &'static str)
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cut.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::DefaultLexer`
[INFO] [stdout]    --> src/cut.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     use crate::lexer::DefaultLexer;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cut.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::DefaultLexer`
[INFO] [stdout]    --> src/cut.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     use crate::lexer::DefaultLexer;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::metamath_lexer::MetaMathLexer`
[INFO] [stdout]  --> src/metamath_parser.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use crate::metamath_lexer::MetaMathLexer;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/metamath_parser.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/parser.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             panic!("this needs to be parsed as an expression");
[INFO] [stdout]     |             -------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 417 |             return Err(ParseError::UnexpectedToken);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/cut.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     match node.clone() {
[INFO] [stdout] 133 | |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout] 134 | |             println!("Found a unary expression");
[INFO] [stdout] 135 | |             match node.operator() {
[INFO] [stdout] ...   |
[INFO] [stdout] 169 | |         }
[INFO] [stdout] 170 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 171 |
[INFO] [stdout] 172 |       Err(ReduceError::EmptyNode)
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:72:54
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:77:47
[INFO] [stdout]    |
[INFO] [stdout] 77 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Node::Identifier { value } => { false }
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:92:54
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:95:47
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:98:32
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Node::Identifier { value } => {
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/parser.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |             panic!("this needs to be parsed as an expression");
[INFO] [stdout]     |             -------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 417 |             return Err(ParseError::UnexpectedToken);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/cut.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     match node.clone() {
[INFO] [stdout] 133 | |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout] 134 | |             println!("Found a unary expression");
[INFO] [stdout] 135 | |             match node.operator() {
[INFO] [stdout] ...   |
[INFO] [stdout] 169 | |         }
[INFO] [stdout] 170 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 171 |
[INFO] [stdout] 172 |       Err(ReduceError::EmptyNode)
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_index`
[INFO] [stdout]   --> src/cut.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let left_index = self.add_step(reduce_left.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_index`
[INFO] [stdout]   --> src/cut.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let right_index = self.add_step(reduce_right.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout]     |                                ^^^^^^^^-
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]     |                                        ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cut.rs:163:27
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Node::Identifier {value} => {
[INFO] [stdout]     |                           ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:72:54
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:77:47
[INFO] [stdout]    |
[INFO] [stdout] 77 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Node::Identifier { value } => { false }
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/parser.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:92:54
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right`
[INFO] [stdout]   --> src/parser.rs:95:47
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Node::UnaryExpression { operator, right } => {
[INFO] [stdout]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/parser.rs:98:32
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Node::Identifier { value } => {
[INFO] [stdout]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Whitespace` and `And` are never constructed
[INFO] [stdout]   --> src/lexer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum TokenKind {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 17 |     Whitespace,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     And,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `current_token` is never used
[INFO] [stdout]   --> src/parser.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait Lexer {
[INFO] [stdout]    |           ----- method in this trait
[INFO] [stdout] 13 |     fn tokenize(&mut self);
[INFO] [stdout] 14 |     fn current_token(&self) -> Token;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnclosedParenthesis` is never constructed
[INFO] [stdout]   --> src/parser.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum ParseError {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 35 |     UnclosedParenthesis,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `evaluate` and `left` are never used
[INFO] [stdout]    --> src/parser.rs:70:8
[INFO] [stdout]     |
[INFO] [stdout] 69  | impl Node {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] 70  |     fn evaluate(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn left(&self) -> Option<&Box<Node>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_mm` and `dump_state` are never used
[INFO] [stdout]    --> src/parser.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | impl Parser {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 156 |     pub fn new_mm(input: String) -> Self {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 463 |     pub fn dump_state(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `hypothesises` are never read
[INFO] [stdout]  --> src/cut.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Axiom {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 6 |     index: usize,
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     hypothesises: Vec<(String, String)>,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_steps` is never used
[INFO] [stdout]   --> src/cut.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Axiom {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn print_steps(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `index`, `hypothesis`, and `reference` are never read
[INFO] [stdout]   --> src/cut.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub(crate) struct Step {
[INFO] [stdout]    |                   ---- fields in this struct
[INFO] [stdout] 93 |     index: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 94 |     hypothesis: (usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 95 |     reference: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Step` 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 function `new` is never used
[INFO] [stdout]    --> src/cut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl Step {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 100 |     pub(crate) fn new(node: Node) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]  --> src/combinator.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cut.rs:210:9
[INFO] [stdout]     |
[INFO] [stdout] 210 |         axiom.solve();
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let _ = axiom.solve();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_index`
[INFO] [stdout]   --> src/cut.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let left_index = self.add_step(reduce_left.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_index`
[INFO] [stdout]   --> src/cut.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let right_index = self.add_step(reduce_right.clone());
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |         Node::UnaryExpression {operator, .. } => {
[INFO] [stdout]     |                                ^^^^^^^^-
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]    --> src/cut.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |         Node::BinaryExpression { left, operator, right } => {
[INFO] [stdout]     |                                        ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/cut.rs:163:27
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Node::Identifier {value} => {
[INFO] [stdout]     |                           ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]   --> src/metamath_parser.rs:25:47
[INFO] [stdout]    |
[INFO] [stdout] 25 |         if let Node::BinaryExpression { left, operator, right } = right {
[INFO] [stdout]    |                                               ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `evaluate` is never used
[INFO] [stdout]   --> src/parser.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 70 |     fn evaluate(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `hypothesises` are never read
[INFO] [stdout]  --> src/cut.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Axiom {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 6 |     index: usize,
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     hypothesises: Vec<(String, String)>,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `index`, `hypothesis`, and `reference` are never read
[INFO] [stdout]   --> src/cut.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub(crate) struct Step {
[INFO] [stdout]    |                   ---- fields in this struct
[INFO] [stdout] 93 |     index: usize,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 94 |     hypothesis: (usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 95 |     reference: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Step` 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 function `new` is never used
[INFO] [stdout]    --> src/cut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 99  | impl Step {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 100 |     pub(crate) fn new(node: Node) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]  --> src/combinator.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cut.rs:210:9
[INFO] [stdout]     |
[INFO] [stdout] 210 |         axiom.solve();
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let _ = axiom.solve();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/metamath_parser.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         axiom.solve();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = axiom.solve();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/metamath_parser.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         axiom.solve();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let _ = axiom.solve();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/metamath_parser.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         axiom.solve();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let _ = axiom.solve();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "fc4bbdf5f94de182f3450a896a9d2be0fab050f13ec16b60c52053c6b9b852d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc4bbdf5f94de182f3450a896a9d2be0fab050f13ec16b60c52053c6b9b852d1", kill_on_drop: false }`
[INFO] [stdout] fc4bbdf5f94de182f3450a896a9d2be0fab050f13ec16b60c52053c6b9b852d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b65b90ed4d118ad401229dd2789bc1544a854902c61d358dfaafd01376dede43
[INFO] running `Command { std: "docker" "start" "-a" "b65b90ed4d118ad401229dd2789bc1544a854902c61d358dfaafd01376dede43", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::cmp::PartialEq`
[INFO] [stderr]  --> src/parser.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::PartialEq;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/parser.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/cut.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/parser.rs:417:13
[INFO] [stderr]     |
[INFO] [stderr] 416 |             panic!("this needs to be parsed as an expression");
[INFO] [stderr]     |             -------------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 417 |             return Err(ParseError::UnexpectedToken);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/cut.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 132 | /     match node.clone() {
[INFO] [stderr] 133 | |         Node::UnaryExpression {operator, .. } => {
[INFO] [stderr] 134 | |             println!("Found a unary expression");
[INFO] [stderr] 135 | |             match node.operator() {
[INFO] [stderr] ...   |
[INFO] [stderr] 169 | |         }
[INFO] [stderr] 170 | |     }
[INFO] [stderr]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 171 |
[INFO] [stderr] 172 |       Err(ReduceError::EmptyNode)
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]   --> src/parser.rs:72:38
[INFO] [stderr]    |
[INFO] [stderr] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stderr]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]   --> src/parser.rs:72:54
[INFO] [stderr]    |
[INFO] [stderr] 72 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stderr]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]   --> src/parser.rs:77:47
[INFO] [stderr]    |
[INFO] [stderr] 77 |             Node::UnaryExpression { operator, right } => {
[INFO] [stderr]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/parser.rs:82:32
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Node::Identifier { value } => { false }
[INFO] [stderr]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]   --> src/parser.rs:92:38
[INFO] [stderr]    |
[INFO] [stderr] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stderr]    |                                      ^^^^ help: try ignoring the field: `left: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]   --> src/parser.rs:92:54
[INFO] [stderr]    |
[INFO] [stderr] 92 |             Node::BinaryExpression { left, operator, right } => {
[INFO] [stderr]    |                                                      ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]   --> src/parser.rs:95:47
[INFO] [stderr]    |
[INFO] [stderr] 95 |             Node::UnaryExpression { operator, right } => {
[INFO] [stderr]    |                                               ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/parser.rs:98:32
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Node::Identifier { value } => {
[INFO] [stderr]    |                                ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left_index`
[INFO] [stderr]   --> src/cut.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let left_index = self.add_step(reduce_left.clone());
[INFO] [stderr]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right_index`
[INFO] [stderr]   --> src/cut.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |             let right_index = self.add_step(reduce_right.clone());
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `operator`
[INFO] [stderr]    --> src/cut.rs:133:32
[INFO] [stderr]     |
[INFO] [stderr] 133 |         Node::UnaryExpression {operator, .. } => {
[INFO] [stderr]     |                                ^^^^^^^^-
[INFO] [stderr]     |                                |
[INFO] [stderr]     |                                help: try removing the field
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `operator`
[INFO] [stderr]    --> src/cut.rs:148:40
[INFO] [stderr]     |
[INFO] [stderr] 148 |         Node::BinaryExpression { left, operator, right } => {
[INFO] [stderr]     |                                        ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/cut.rs:163:27
[INFO] [stderr]     |
[INFO] [stderr] 163 |         Node::Identifier {value} => {
[INFO] [stderr]     |                           ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method `evaluate` is never used
[INFO] [stderr]   --> src/parser.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 69 | impl Node {
[INFO] [stderr]    | --------- method in this implementation
[INFO] [stderr] 70 |     fn evaluate(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Axiom` is never constructed
[INFO] [stderr]  --> src/cut.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Axiom {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `add_step`, `solve`, and `print_steps` are never used
[INFO] [stderr]   --> src/cut.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl Axiom {
[INFO] [stderr]    | ---------- associated items in this implementation
[INFO] [stderr] 15 |     pub fn new(name: String, hypothesises: Vec<(String, String)>, initial_assertion: String, parser: Parser) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 26 |     pub fn add_step(&mut self, node: Node) -> usize {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 52 |     pub fn solve(&mut self) -> Result<(), ParseError> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |     pub fn print_steps(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Step` is never constructed
[INFO] [stderr]   --> src/cut.rs:92:19
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub(crate) struct Step {
[INFO] [stderr]    |                   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/cut.rs:100:19
[INFO] [stderr]     |
[INFO] [stderr] 99  | impl Step {
[INFO] [stderr]     | --------- associated function in this implementation
[INFO] [stderr] 100 |     pub(crate) fn new(node: Node) -> Self {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `EmptyNode` and `Unimplemented` are never constructed
[INFO] [stderr]    --> src/cut.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 117 | pub enum ReduceError {
[INFO] [stderr]     |          ----------- variants in this enum
[INFO] [stderr] 118 |     EmptyNode,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 119 |     Unimplemented,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ReduceError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `reduce` is never used
[INFO] [stderr]    --> src/cut.rs:131:8
[INFO] [stderr]     |
[INFO] [stderr] 131 | pub fn reduce(node: Node) -> Result<(Node, Node), ReduceError>{
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `the_letter_a` is never used
[INFO] [stderr]  --> src/combinator.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_literal` is never used
[INFO] [stderr]  --> src/combinator.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn match_literal(expected: &'static str)
[INFO] [stderr]   |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `foxlang` (lib) generated 27 warnings (run `cargo fix --lib -p foxlang` to apply 4 suggestions)
[INFO] [stderr] warning: unused import: `crate::lexer::DefaultLexer`
[INFO] [stderr]    --> src/cut.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     use crate::lexer::DefaultLexer;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Whitespace` and `And` are never constructed
[INFO] [stderr]   --> src/lexer.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub enum TokenKind {
[INFO] [stderr]    |          --------- variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 17 |     Whitespace,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 26 |     And,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `TokenKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `current_token` is never used
[INFO] [stderr]   --> src/parser.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub trait Lexer {
[INFO] [stderr]    |           ----- method in this trait
[INFO] [stderr] 13 |     fn tokenize(&mut self);
[INFO] [stderr] 14 |     fn current_token(&self) -> Token;
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `UnclosedParenthesis` is never constructed
[INFO] [stderr]   --> src/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub enum ParseError {
[INFO] [stderr]    |          ---------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 35 |     UnclosedParenthesis,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: methods `evaluate` and `left` are never used
[INFO] [stderr]    --> src/parser.rs:70:8
[INFO] [stderr]     |
[INFO] [stderr] 69  | impl Node {
[INFO] [stderr]     | --------- methods in this implementation
[INFO] [stderr] 70  |     fn evaluate(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |     pub fn left(&self) -> Option<&Box<Node>> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new_mm` and `dump_state` are never used
[INFO] [stderr]    --> src/parser.rs:156:12
[INFO] [stderr]     |
[INFO] [stderr] 142 | impl Parser {
[INFO] [stderr]     | ----------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 156 |     pub fn new_mm(input: String) -> Self {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 463 |     pub fn dump_state(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `name` and `hypothesises` are never read
[INFO] [stderr]  --> src/cut.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Axiom {
[INFO] [stderr]   |            ----- fields in this struct
[INFO] [stderr] 6 |     index: usize,
[INFO] [stderr] 7 |     name: String,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 8 |     hypothesises: Vec<(String, String)>,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `print_steps` is never used
[INFO] [stderr]   --> src/cut.rs:84:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl Axiom {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 84 |     pub fn print_steps(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `index`, `hypothesis`, and `reference` are never read
[INFO] [stderr]   --> src/cut.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub(crate) struct Step {
[INFO] [stderr]    |                   ---- fields in this struct
[INFO] [stderr] 93 |     index: usize,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 94 |     hypothesis: (usize, usize),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 95 |     reference: String,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Step` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/cut.rs:210:9
[INFO] [stderr]     |
[INFO] [stderr] 210 |         axiom.solve();
[INFO] [stderr]     |         ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let _ = axiom.solve();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `foxlang` (bin "foxlang" test) generated 30 warnings (20 duplicates) (run `cargo fix --bin "foxlang" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `crate::metamath_lexer::MetaMathLexer`
[INFO] [stderr]  --> src/metamath_parser.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     use crate::metamath_lexer::MetaMathLexer;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]  --> src/metamath_parser.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     use super::*;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `operator`
[INFO] [stderr]   --> src/metamath_parser.rs:25:47
[INFO] [stderr]    |
[INFO] [stderr] 25 |         if let Node::BinaryExpression { left, operator, right } = right {
[INFO] [stderr]    |                                               ^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/metamath_parser.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         axiom.solve();
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 49 |         let _ = axiom.solve();
[INFO] [stdout] running 22 tests
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/metamath_parser.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         axiom.solve();
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let _ = axiom.solve();
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/metamath_parser.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         axiom.solve();
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 72 |         let _ = axiom.solve();
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `foxlang` (lib test) generated 31 warnings (25 duplicates) (run `cargo fix --lib -p foxlang --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/foxlang-6273d8e6d9fd1ca1)
[INFO] [stdout] test combinator::literal_parser ... ok
[INFO] [stdout] test cut::tests::test_simple_reduce ... ok
[INFO] [stdout] test cut::tests::test_recursive_reduce ... ok
[INFO] [stdout] test lexer::tests::lex_negation ... ok
[INFO] [stdout] test lexer::tests::lex_turnstile ... ok
[INFO] [stdout] test lexer::tests::parse_logical_expression ... ok
[INFO] [stdout] test lexer::tests::split_strings ... ok
[INFO] [stdout] test metamath_lexer::tests::test_ax1 ... ok
[INFO] [stdout] test metamath_lexer::tests::test_ax_gen ... ok
[INFO] [stdout] test metamath_lexer::tests::test_ax_4 ... ok
[INFO] [stdout] test parser::tests::parse ... ok
[INFO] [stdout] test metamath_parser::tests::test_step_reduce ... ok
[INFO] [stdout] test metamath_parser::tests::test_ax_1 ... ok
[INFO] [stdout] test metamath_parser::tests::test_ax_2 ... ok
[INFO] [stdout] test metamath_lexer::tests::test_ax2 ... ok
[INFO] [stdout] test metamath_parser::tests::test_ax_3 ... ok
[INFO] [stdout] test metamath_lexer::tests::test_ax3 ... ok
[INFO] [stdout] test parser::tests::test_nested_balanced ... ok
[INFO] [stdout] test parser::tests::test_sub_left ... ok
[INFO] [stdout] test metamath_parser::tests::test_recursive_step ... ok
[INFO] [stdout] test parser::tests::test_sub_right ... ok
[INFO] [stdout] test parser::tests::parse_unexpected_token ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- parser::tests::parse_unexpected_token stdout ----
[INFO] [stdout] Ok(BinaryExpression { left: Identifier { value: "A" }, operator: Implies, right: Identifier { value: "B" } })
[INFO] [stdout] thread 'parser::tests::parse_unexpected_token' panicked at src/parser.rs:494:9:
[INFO] [stdout] assertion failed: res.is_err()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x574882e96bfa - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x574882e96bfa - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x574882e96bfa - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x574882e96bfa - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x574882ebc683 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x574882ebc683 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x574882e93d93 - std::io::Write::write_fmt::h03bb0ca26e6faf8c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x574882e96a42 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x574882e9807d - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x574882e97e87 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x574882e617b7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7a3c7b4a1ae77f2f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   11:     0x574882e617b7 - test::test_main::{{closure}}::hf0d3b69ae9b353d1
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x574882e98728 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6332e82e7b189abd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   13:     0x574882e98728 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x574882e984b6 - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:667:13
[INFO] [stdout]   15:     0x574882e970d9 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x574882e9817c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x574882e0faa0 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   18:     0x574882e0fb2c - core::panicking::panic::hbb5c236a846c507c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:148:5
[INFO] [stdout]   19:     0x574882e1bf1d - foxlang::parser::tests::parse_unexpected_token::hfb25ad479ff61676
[INFO] [stdout]                                at /opt/rustwide/workdir/src/parser.rs:494:9
[INFO] [stdout]   20:     0x574882e1bd87 - foxlang::parser::tests::parse_unexpected_token::{{closure}}::h7ffd987b79521821
[INFO] [stdout]                                at /opt/rustwide/workdir/src/parser.rs:488:32
[INFO] [stdout]   21:     0x574882e24226 - core::ops::function::FnOnce::call_once::ha52d8a9906ef0baa
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x574882e662db - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x574882e662db - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18
[INFO] [stdout]   24:     0x574882e65cc8 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60
[INFO] [stdout]   25:     0x574882e65cc8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x574882e65cc8 - std::panicking::try::do_call::hc79d0fc888a0bd30
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   27:     0x574882e65cc8 - std::panicking::try::hb8a7878e3a8589d6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   28:     0x574882e65cc8 - std::panic::catch_unwind::hb8e4600ff0ff5cfa
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   29:     0x574882e65cc8 - test::run_test_in_process::hc2900b0b18688dd6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27
[INFO] [stdout]   30:     0x574882e65cc8 - test::run_test::{{closure}}::hac2a9cb07be3d48d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43
[INFO] [stdout]   31:     0x574882e2976a - test::run_test::{{closure}}::h4a5b729e66a38cd8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41
[INFO] [stdout]   32:     0x574882e2976a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   33:     0x574882e2d0e4 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17
[INFO] [stdout]   34:     0x574882e2d0e4 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x574882e2d0e4 - std::panicking::try::do_call::h2625a51b667bfb64
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   36:     0x574882e2d0e4 - std::panicking::try::hb956a59a1973aa4c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   37:     0x574882e2d0e4 - std::panic::catch_unwind::h64f3b9d1067ef6a0
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   38:     0x574882e2d0e4 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   39:     0x574882e2d0e4 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x574882e9c66b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h42f0ba71002a1b2c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   41:     0x574882e9c66b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::had9e47d7a3dcecb8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   42:     0x574882e9c66b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   43:     0x7b08c9920ac3 - <unknown>
[INFO] [stdout]   44:     0x7b08c99b1a04 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     parser::tests::parse_unexpected_token
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 21 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "b65b90ed4d118ad401229dd2789bc1544a854902c61d358dfaafd01376dede43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b65b90ed4d118ad401229dd2789bc1544a854902c61d358dfaafd01376dede43", kill_on_drop: false }`
[INFO] [stdout] b65b90ed4d118ad401229dd2789bc1544a854902c61d358dfaafd01376dede43
