[INFO] cloning repository https://github.com/pseguin2011/monkey_interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pseguin2011/monkey_interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpseguin2011%2Fmonkey_interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpseguin2011%2Fmonkey_interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4919060c2b5e948c080fa57822602c4a5996777d
[INFO] checking pseguin2011/monkey_interpreter against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpseguin2011%2Fmonkey_interpreter" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pseguin2011/monkey_interpreter on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pseguin2011/monkey_interpreter
[INFO] finished tweaking git repo https://github.com/pseguin2011/monkey_interpreter
[INFO] tweaked toml for git repo https://github.com/pseguin2011/monkey_interpreter written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/pseguin2011/monkey_interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c484fc63ef6f39dfe1b727cc90085c86c1fae099426906e729c96421ccaa9e1a
[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" "c484fc63ef6f39dfe1b727cc90085c86c1fae099426906e729c96421ccaa9e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c484fc63ef6f39dfe1b727cc90085c86c1fae099426906e729c96421ccaa9e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c484fc63ef6f39dfe1b727cc90085c86c1fae099426906e729c96421ccaa9e1a", kill_on_drop: false }`
[INFO] [stdout] c484fc63ef6f39dfe1b727cc90085c86c1fae099426906e729c96421ccaa9e1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e7c4e676f71a6603efb9d71ead351534028e3435303462395d353caccc29f6a
[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" "6e7c4e676f71a6603efb9d71ead351534028e3435303462395d353caccc29f6a", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> src/parser/parser.rs:1:102
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::parser::ast::{Expressions, ExpressionStatement, Identifier, IntegerLiteral, LetStatement, Node, Program, ReturnStatement, Stat...
[INFO] [stdout]   |                                                                                                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `precedence`
[INFO] [stdout]    --> src/parser/parser.rs:280:40
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn parse_expression<'a>(&mut self, precedence: u8, token_type: token::TokenType) -> Option<Expressions<'static>> {
[INFO] [stdout]     |                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LOWEST`
[INFO] [stdout]  --> src/parser/parser.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const LOWEST: u8 = 1;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EQUALS`
[INFO] [stdout]   --> src/parser/parser.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const EQUALS: u8 = 2;         // ==
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LESSGREATER`
[INFO] [stdout]   --> src/parser/parser.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const LESSGREATER: u8 = 3;    // < or >
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SUM`
[INFO] [stdout]   --> src/parser/parser.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const SUM: u8 = 4;            // + 
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PRODUCT`
[INFO] [stdout]   --> src/parser/parser.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const PRODUCT: u8 = 5;        // *
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PREFIX`
[INFO] [stdout]   --> src/parser/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const PREFIX: u8 = 6;         // -X or !X
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CALL`
[INFO] [stdout]   --> src/parser/parser.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const CALL: u8 = 7;           // myFunction(X)
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PrefixParsingFn`
[INFO] [stdout]   --> src/parser/parser.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | type PrefixParsingFn<'a> = dyn Fn(&Parser) -> Expressions<'a>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `InfixParsingFn`
[INFO] [stdout]   --> src/parser/parser.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | type InfixParsingFn<'a> = dyn Fn(&Parser, Expressions<'a>) -> Expressions<'a>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]   --> src/parser/parser.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Parser {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser/parser.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new(lexer: Lexer) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_prefix`
[INFO] [stdout]   --> src/parser/parser.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn register_prefix(&mut self, token_type: token::TokenType<'static>, func: &'static PrefixParsingFn<'static>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_infix`
[INFO] [stdout]   --> src/parser/parser.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn register_infix(&mut self, token_type: token::TokenType<'static>, func: &'static InfixParsingFn<'static>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_program_ast_node`
[INFO] [stdout]   --> src/parser/parser.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn new_program_ast_node() -> Program<'static> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_token`
[INFO] [stdout]   --> src/parser/parser.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn next_token(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `errors`
[INFO] [stdout]   --> src/parser/parser.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn errors(&self) -> &[String] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_error`
[INFO] [stdout]   --> src/parser/parser.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn peek_error(&mut self, t: token::TokenType) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_program`
[INFO] [stdout]    --> src/parser/parser.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn parse_program(&mut self) -> Option<Program<'static>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expected_peek`
[INFO] [stdout]    --> src/parser/parser.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn expected_peek(&mut self, token_type: token::TokenType) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_token_is`
[INFO] [stdout]    --> src/parser/parser.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn peek_token_is(&self, token_type: token::TokenType) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_token_is`
[INFO] [stdout]    --> src/parser/parser.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn current_token_is(&self, token_type: token::TokenType) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_identifier`
[INFO] [stdout]    --> src/parser/parser.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 168 |     pub fn parse_identifier(&self) -> Expressions<'static> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_integer_literal`
[INFO] [stdout]    --> src/parser/parser.rs:181:12
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn parse_integer_literal(&self) -> Expressions<'static> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_let_statement`
[INFO] [stdout]    --> src/parser/parser.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn parse_let_statement(&mut self) -> Option<Statements<'static>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_return_statement`
[INFO] [stdout]    --> src/parser/parser.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn parse_return_statement(&mut self) -> Option<Statements<'static>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression_statement`
[INFO] [stdout]    --> src/parser/parser.rs:261:8
[INFO] [stdout]     |
[INFO] [stdout] 261 |     fn parse_expression_statement(&mut self) -> Option<Statements<'static>>{
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression`
[INFO] [stdout]    --> src/parser/parser.rs:280:8
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn parse_expression<'a>(&mut self, precedence: u8, token_type: token::TokenType) -> Option<Expressions<'static>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_parser_errors`
[INFO] [stdout]    --> src/parser/parser.rs:419:4
[INFO] [stdout]     |
[INFO] [stdout] 419 | fn check_parser_errors(parser: &Parser) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `precedence`
[INFO] [stdout]    --> src/parser/parser.rs:280:40
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn parse_expression<'a>(&mut self, precedence: u8, token_type: token::TokenType) -> Option<Expressions<'static>> {
[INFO] [stdout]     |                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EQUALS`
[INFO] [stdout]   --> src/parser/parser.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const EQUALS: u8 = 2;         // ==
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LESSGREATER`
[INFO] [stdout]   --> src/parser/parser.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const LESSGREATER: u8 = 3;    // < or >
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SUM`
[INFO] [stdout]   --> src/parser/parser.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const SUM: u8 = 4;            // + 
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PRODUCT`
[INFO] [stdout]   --> src/parser/parser.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const PRODUCT: u8 = 5;        // *
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PREFIX`
[INFO] [stdout]   --> src/parser/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const PREFIX: u8 = 6;         // -X or !X
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CALL`
[INFO] [stdout]   --> src/parser/parser.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const CALL: u8 = 7;           // myFunction(X)
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `infix_parsing_fns`
[INFO] [stdout]   --> src/parser/parser.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     infix_parsing_fns:  HashMap<token::TokenType<'static>, &'static InfixParsingFn<'static>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_infix`
[INFO] [stdout]   --> src/parser/parser.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn register_infix(&mut self, token_type: token::TokenType<'static>, func: &'static InfixParsingFn<'static>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "6e7c4e676f71a6603efb9d71ead351534028e3435303462395d353caccc29f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e7c4e676f71a6603efb9d71ead351534028e3435303462395d353caccc29f6a", kill_on_drop: false }`
[INFO] [stdout] 6e7c4e676f71a6603efb9d71ead351534028e3435303462395d353caccc29f6a