[INFO] updating cached repository https://github.com/jeppester/rust-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 601a7acf7d217b08994f5820f6c46bd6a4be8358
[INFO] checking jeppester/rust-interpreter against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeppester%2Frust-interpreter" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeppester/rust-interpreter on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeppester/rust-interpreter
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[INFO] tweaked toml for git repo https://github.com/jeppester/rust-interpreter written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/jeppester/rust-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 48c22782ad0c3ee3fe92bd93ab263572bdc8dc94208a0d4afff61541457bdefa
[INFO] running `Command { std: "docker" "start" "-a" "48c22782ad0c3ee3fe92bd93ab263572bdc8dc94208a0d4afff61541457bdefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48c22782ad0c3ee3fe92bd93ab263572bdc8dc94208a0d4afff61541457bdefa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c22782ad0c3ee3fe92bd93ab263572bdc8dc94208a0d4afff61541457bdefa", kill_on_drop: false }`
[INFO] [stdout] 48c22782ad0c3ee3fe92bd93ab263572bdc8dc94208a0d4afff61541457bdefa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5697bd1a6a1347e006ea8f4ef603ce9e64c0ce5661fd82279fe054fa81ec9830
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5697bd1a6a1347e006ea8f4ef603ce9e64c0ce5661fd82279fe054fa81ec9830", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking monkey-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lexer/mod.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 |       ('0' <= ch && ch <= '9')
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lexer/mod.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 |       ('0' <= ch && ch <= '9')
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Precedence`
[INFO] [stdout]   --> src/parser/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub type Precedence = u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LOWEST`
[INFO] [stdout]   --> src/parser/mod.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   pub const LOWEST: u8 = 0;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EQUALS`
[INFO] [stdout]   --> src/parser/mod.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   pub const EQUALS: u8 = 1;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LESS_OR_GREATER`
[INFO] [stdout]   --> src/parser/mod.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   pub const LESS_OR_GREATER: u8 = 2;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SUM`
[INFO] [stdout]   --> src/parser/mod.rs:35:3
[INFO] [stdout]    |
[INFO] [stdout] 35 |   pub const SUM: u8 = 3;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PRODUCT`
[INFO] [stdout]   --> src/parser/mod.rs:36:3
[INFO] [stdout]    |
[INFO] [stdout] 36 |   pub const PRODUCT: u8 = 4;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PREFIX`
[INFO] [stdout]   --> src/parser/mod.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 |   pub const PREFIX: u8 = 5;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CALL`
[INFO] [stdout]   --> src/parser/mod.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 38 |   pub const CALL: u8 = 6;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_operator_precedence`
[INFO] [stdout]   --> src/parser/mod.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn get_operator_precedence(token_type: TokenType) -> Precedence {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]   --> src/parser/mod.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Parser {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_boolean`
[INFO] [stdout]   --> src/parser/mod.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn parse_boolean(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_identifier`
[INFO] [stdout]   --> src/parser/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn parse_identifier(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_integer_literal`
[INFO] [stdout]   --> src/parser/mod.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn parse_integer_literal(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_prefix_expression`
[INFO] [stdout]   --> src/parser/mod.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn parse_prefix_expression(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_infix_expression`
[INFO] [stdout]    --> src/parser/mod.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn parse_infix_expression(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_call_expression`
[INFO] [stdout]    --> src/parser/mod.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub fn parse_call_expression(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_grouped_expression`
[INFO] [stdout]    --> src/parser/mod.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn parse_grouped_expression(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_if_expression`
[INFO] [stdout]    --> src/parser/mod.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 | pub fn parse_if_expression(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_function_literal`
[INFO] [stdout]    --> src/parser/mod.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn parse_function_literal(parser: &mut Parser) -> Result<Expression, ParserError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/parser/mod.rs:203:10
[INFO] [stdout]     |
[INFO] [stdout] 203 |   pub fn new(mut lexer: Lexer) -> Self {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_token`
[INFO] [stdout]    --> src/parser/mod.rs:241:10
[INFO] [stdout]     |
[INFO] [stdout] 241 |   pub fn next_token(&mut self) {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_program`
[INFO] [stdout]    --> src/parser/mod.rs:247:10
[INFO] [stdout]     |
[INFO] [stdout] 247 |   pub fn parse_program(&mut self) -> Program {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_block_statement`
[INFO] [stdout]    --> src/parser/mod.rs:275:10
[INFO] [stdout]     |
[INFO] [stdout] 275 |   pub fn parse_block_statement(&mut self) -> BlockStatement {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_statement`
[INFO] [stdout]    --> src/parser/mod.rs:298:10
[INFO] [stdout]     |
[INFO] [stdout] 298 |   pub fn parse_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_let_statement`
[INFO] [stdout]    --> src/parser/mod.rs:306:10
[INFO] [stdout]     |
[INFO] [stdout] 306 |   pub fn parse_let_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_return_statement`
[INFO] [stdout]    --> src/parser/mod.rs:334:10
[INFO] [stdout]     |
[INFO] [stdout] 334 |   pub fn parse_return_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression_statement`
[INFO] [stdout]    --> src/parser/mod.rs:353:10
[INFO] [stdout]     |
[INFO] [stdout] 353 |   pub fn parse_expression_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression`
[INFO] [stdout]    --> src/parser/mod.rs:363:10
[INFO] [stdout]     |
[INFO] [stdout] 363 |   pub fn parse_expression(&mut self, precedence: Precedence) -> Result<Expression, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_function_arguments`
[INFO] [stdout]    --> src/parser/mod.rs:389:10
[INFO] [stdout]     |
[INFO] [stdout] 389 |   pub fn parse_function_arguments(&mut self) -> Result<Vec<Identifier>, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_call_arguments`
[INFO] [stdout]    --> src/parser/mod.rs:417:10
[INFO] [stdout]     |
[INFO] [stdout] 417 |   pub fn parse_call_arguments(&mut self) -> Result<Vec<Expression>, ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_token_is`
[INFO] [stdout]    --> src/parser/mod.rs:441:10
[INFO] [stdout]     |
[INFO] [stdout] 441 |   pub fn current_token_is(&mut self, token_type: TokenType) -> bool {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_token_is`
[INFO] [stdout]    --> src/parser/mod.rs:445:10
[INFO] [stdout]     |
[INFO] [stdout] 445 |   pub fn peek_token_is(&mut self, token_type: TokenType) -> bool {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect_peek`
[INFO] [stdout]    --> src/parser/mod.rs:449:10
[INFO] [stdout]     |
[INFO] [stdout] 449 |   pub fn expect_peek(&mut self, token_type: TokenType) -> Result<(), ParserError> {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_precedence`
[INFO] [stdout]    --> src/parser/mod.rs:463:10
[INFO] [stdout]     |
[INFO] [stdout] 463 |   pub fn current_precedence(&mut self) -> Precedence {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_precedence`
[INFO] [stdout]    --> src/parser/mod.rs:467:10
[INFO] [stdout]     |
[INFO] [stdout] 467 |   pub fn peek_precedence(&mut self) -> Precedence {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prefix_parser_function_for`
[INFO] [stdout]    --> src/parser/mod.rs:471:10
[INFO] [stdout]     |
[INFO] [stdout] 471 |   pub fn prefix_parser_function_for(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_prefix`
[INFO] [stdout]    --> src/parser/mod.rs:483:10
[INFO] [stdout]     |
[INFO] [stdout] 483 |   pub fn register_prefix(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_infix`
[INFO] [stdout]    --> src/parser/mod.rs:493:10
[INFO] [stdout]     |
[INFO] [stdout] 493 |   pub fn register_infix(
[INFO] [stdout]     |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/block_statement.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/block_statement.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/boolean_literal.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/boolean_literal.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/call_expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/call_expression.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/function_literal.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/function_literal.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/identifier.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/identifier.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/if_expression.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/if_expression.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/infix_expression.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/infix_expression.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/integer_literal.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/integer_literal.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/let_statement.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/let_statement.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/prefix_expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/prefix_expression.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/return_statement.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/return_statement.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BooleanLiteral`
[INFO] [stdout]   --> src/ast/mod.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |   BooleanLiteral(BooleanLiteral),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Identifier`
[INFO] [stdout]   --> src/ast/mod.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   Identifier(Identifier),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IntegerLiteral`
[INFO] [stdout]   --> src/ast/mod.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   IntegerLiteral(IntegerLiteral),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrefixExpression`
[INFO] [stdout]   --> src/ast/mod.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   PrefixExpression(PrefixExpression),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InfixExpression`
[INFO] [stdout]   --> src/ast/mod.rs:35:3
[INFO] [stdout]    |
[INFO] [stdout] 35 |   InfixExpression(InfixExpression),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IfExpression`
[INFO] [stdout]   --> src/ast/mod.rs:36:3
[INFO] [stdout]    |
[INFO] [stdout] 36 |   IfExpression(IfExpression),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FunctionLiteral`
[INFO] [stdout]   --> src/ast/mod.rs:37:3
[INFO] [stdout]    |
[INFO] [stdout] 37 |   FunctionLiteral(FunctionLiteral),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CallExpression`
[INFO] [stdout]   --> src/ast/mod.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 38 |   CallExpression(CallExpression),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/mod.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/mod.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LetStatement`
[INFO] [stdout]   --> src/ast/mod.rs:71:3
[INFO] [stdout]    |
[INFO] [stdout] 71 |   LetStatement(LetStatement),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ReturnStatement`
[INFO] [stdout]   --> src/ast/mod.rs:72:3
[INFO] [stdout]    |
[INFO] [stdout] 72 |   ReturnStatement(ReturnStatement),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Expression`
[INFO] [stdout]   --> src/ast/mod.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 73 |   Expression(Expression),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BlockStatement`
[INFO] [stdout]   --> src/ast/mod.rs:74:3
[INFO] [stdout]    |
[INFO] [stdout] 74 |   BlockStatement(BlockStatement),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/mod.rs:78:10
[INFO] [stdout]    |
[INFO] [stdout] 78 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast/mod.rs:87:10
[INFO] [stdout]    |
[INFO] [stdout] 87 |   pub fn to_string(&self) -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Program`
[INFO] [stdout]   --> src/ast/mod.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct Program {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]    --> src/ast/mod.rs:102:10
[INFO] [stdout]     |
[INFO] [stdout] 102 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]    --> src/ast/mod.rs:110:10
[INFO] [stdout]     |
[INFO] [stdout] 110 |   pub fn to_string(&self) -> String {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 80 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/block_statement.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/boolean_literal.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/call_expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/function_literal.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/identifier.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/if_expression.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/infix_expression.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/integer_literal.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/prefix_expression.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/mod.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BlockStatement`
[INFO] [stdout]   --> src/ast/mod.rs:74:3
[INFO] [stdout]    |
[INFO] [stdout] 74 |   BlockStatement(BlockStatement),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast/mod.rs:78:10
[INFO] [stdout]    |
[INFO] [stdout] 78 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]    --> src/ast/mod.rs:102:10
[INFO] [stdout]     |
[INFO] [stdout] 102 |   pub fn token_literal(&self) -> Literal {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "5697bd1a6a1347e006ea8f4ef603ce9e64c0ce5661fd82279fe054fa81ec9830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5697bd1a6a1347e006ea8f4ef603ce9e64c0ce5661fd82279fe054fa81ec9830", kill_on_drop: false }`
[INFO] [stdout] 5697bd1a6a1347e006ea8f4ef603ce9e64c0ce5661fd82279fe054fa81ec9830