[INFO] updating cached repository https://github.com/Nazariglez/monkeylang-rs
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5900888c8130244f4f6c8d7fa69d0c8c7dcb4473
[INFO] testing Nazariglez/monkeylang-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNazariglez%2Fmonkeylang-rs" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nazariglez/monkeylang-rs on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Nazariglez/monkeylang-rs
[INFO] finished tweaking git repo https://github.com/Nazariglez/monkeylang-rs
[INFO] tweaked toml for git repo https://github.com/Nazariglez/monkeylang-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Nazariglez/monkeylang-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d60c3a4ae11b3ef1c7fefa08a4dcd6e5db48d426f356d3eb7fe571cac4bf1a96
[INFO] running `"docker" "start" "-a" "d60c3a4ae11b3ef1c7fefa08a4dcd6e5db48d426f356d3eb7fe571cac4bf1a96"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr]    |             ^^^^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr] 69 |             _Ident => "Ident",
[INFO] [stderr]    |             ^^^^^^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] ...
[INFO] [stderr] 70 |             _ => "Unimplemented!"
[INFO] [stderr]    |             ^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/token.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(typ: TokenType, literal: &str) -> Token {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_char`
[INFO] [stderr]   --> src/token.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn from_char(typ: TokenType, ch: char) -> Token {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `default`
[INFO] [stderr]   --> src/token.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn default() -> Token {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Illegal`
[INFO] [stderr]   --> src/token.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Illegal,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EOF`
[INFO] [stderr]   --> src/token.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     EOF,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ident`
[INFO] [stderr]   --> src/token.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     Ident,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]   --> src/token.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     Int,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/token.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     String,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Assign`
[INFO] [stderr]   --> src/token.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Assign,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Plus`
[INFO] [stderr]   --> src/token.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Plus,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Minus`
[INFO] [stderr]   --> src/token.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Minus,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bang`
[INFO] [stderr]   --> src/token.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     Bang,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Asterisk`
[INFO] [stderr]   --> src/token.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Asterisk,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Slash`
[INFO] [stderr]   --> src/token.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     Slash,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LT`
[INFO] [stderr]   --> src/token.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     LT,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GT`
[INFO] [stderr]   --> src/token.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     GT,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Equal`
[INFO] [stderr]   --> src/token.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     Equal,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NotEqual`
[INFO] [stderr]   --> src/token.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     NotEqual,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Comma`
[INFO] [stderr]   --> src/token.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     Comma,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Semicolon`
[INFO] [stderr]   --> src/token.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     Semicolon,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Lparen`
[INFO] [stderr]   --> src/token.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     Lparen,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rparen`
[INFO] [stderr]   --> src/token.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     Rparen,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Lbrace`
[INFO] [stderr]   --> src/token.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Lbrace,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rbrace`
[INFO] [stderr]   --> src/token.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     Rbrace,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/token.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     Function,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/token.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     Let,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `True`
[INFO] [stderr]   --> src/token.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     True,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `False`
[INFO] [stderr]   --> src/token.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     False,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `If`
[INFO] [stderr]   --> src/token.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     If,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Else`
[INFO] [stderr]   --> src/token.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     Else,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Return`
[INFO] [stderr]   --> src/token.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     Return,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lookup_ident`
[INFO] [stderr]   --> src/token.rs:77:8
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn lookup_ident(ident: &str) -> TokenType {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ZERO_CHAR`
[INFO] [stderr]  --> src/lexer.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const ZERO_CHAR:char = 0u8 as char;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_letter`
[INFO] [stderr]  --> src/lexer.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn is_letter(ch: char) -> bool {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_digit`
[INFO] [stderr]  --> src/lexer.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn is_digit(ch: char) -> bool {
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]   --> src/lexer.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct Lexer {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/lexer.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(input: &str) -> Lexer {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_char`
[INFO] [stderr]   --> src/lexer.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn read_char(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_number`
[INFO] [stderr]   --> src/lexer.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn read_number(&mut self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_identifier`
[INFO] [stderr]   --> src/lexer.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn read_identifier(&mut self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_char`
[INFO] [stderr]   --> src/lexer.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn peek_char(&self) -> char {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next_token`
[INFO] [stderr]   --> src/lexer.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn next_token(&mut self) -> Token {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `skip_whitespace`
[INFO] [stderr]    --> src/lexer.rs:143:8
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn skip_whitespace(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/ast.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(tok: Token, val: &str) -> Identifier {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `token_literal`
[INFO] [stderr]   --> src/ast.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn token_literal(&self) -> &str {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/ast.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Let(Identifier, Expression),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Return`
[INFO] [stderr]   --> src/ast.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Return(Expression),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expression`
[INFO] [stderr]   --> src/ast.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Expression(Expression),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Identifier`
[INFO] [stderr]   --> src/ast.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     Identifier(Identifier),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]   --> src/ast.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Literal(Literal),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]   --> src/ast.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     Int(i32),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/ast.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/ast.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     Bool(bool)
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/ast.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn new() -> Program {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `token_literal`
[INFO] [stderr]    --> src/ast.rs:111:12
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn token_literal(&self) -> String {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Parser {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/parser.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(lexer: Lexer) -> Parser {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `errors`
[INFO] [stderr]   --> src/parser.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn errors(&self) -> &Vec<String> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_error`
[INFO] [stderr]   --> src/parser.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn peek_error(&mut self, typ: &TokenType) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next_token`
[INFO] [stderr]   --> src/parser.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn next_token(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parse_program`
[INFO] [stderr]   --> src/parser.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn parse_program(&mut self) -> Result<ast::Program, String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parse_statement`
[INFO] [stderr]   --> src/parser.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn parse_statement(&mut self) -> Option<ast::Statement> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parse_let_statement`
[INFO] [stderr]   --> src/parser.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn parse_let_statement(&mut self) -> Option<ast::Statement> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parse_return_statement`
[INFO] [stderr]   --> src/parser.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn parse_return_statement(&mut self) -> Option<ast::Statement> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cur_token_is`
[INFO] [stderr]    --> src/parser.rs:108:8
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn cur_token_is(&self, typ: TokenType) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_token_is`
[INFO] [stderr]    --> src/parser.rs:112:8
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn peek_token_is(&self, typ: &TokenType) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expect_peek`
[INFO] [stderr]    --> src/parser.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 |     fn expect_peek(&mut self, typ: TokenType) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_Illegal` should have a snake case name
[INFO] [stderr]   --> src/token.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `_illegal`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_EOF` should have a snake case name
[INFO] [stderr]   --> src/token.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr]    |             ^^^^ help: convert the identifier to snake case: `_eof`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_Ident` should have a snake case name
[INFO] [stderr]   --> src/token.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             _Ident => "Ident",
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `_ident`
[INFO] [stderr] 
[INFO] [stderr] warning: 73 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "d60c3a4ae11b3ef1c7fefa08a4dcd6e5db48d426f356d3eb7fe571cac4bf1a96"`
[INFO] running `"docker" "rm" "-f" "d60c3a4ae11b3ef1c7fefa08a4dcd6e5db48d426f356d3eb7fe571cac4bf1a96"`
[INFO] [stdout] d60c3a4ae11b3ef1c7fefa08a4dcd6e5db48d426f356d3eb7fe571cac4bf1a96
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] b04249b7f34093ce7c2b1c5fa0440c63767f29fb406b9336bcb4df8dbaa1b260
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b04249b7f34093ce7c2b1c5fa0440c63767f29fb406b9336bcb4df8dbaa1b260"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr]    |             ^^^^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr] 69 |             _Ident => "Ident",
[INFO] [stderr]    |             ^^^^^^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] ...
[INFO] [stderr] 70 |             _ => "Unimplemented!"
[INFO] [stderr]    |             ^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expression`
[INFO] [stderr]   --> src/ast.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Expression(Expression),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]   --> src/ast.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Literal(Literal),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]   --> src/ast.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     Int(i32),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/ast.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/ast.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     Bool(bool)
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `token_literal`
[INFO] [stderr]    --> src/ast.rs:111:12
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn token_literal(&self) -> String {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `errors`
[INFO] [stderr]   --> src/parser.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn errors(&self) -> &Vec<String> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_Illegal` should have a snake case name
[INFO] [stderr]   --> src/token.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `_illegal`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_EOF` should have a snake case name
[INFO] [stderr]   --> src/token.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr]    |             ^^^^ help: convert the identifier to snake case: `_eof`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_Ident` should have a snake case name
[INFO] [stderr]   --> src/token.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             _Ident => "Ident",
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `_ident`
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "b04249b7f34093ce7c2b1c5fa0440c63767f29fb406b9336bcb4df8dbaa1b260"`
[INFO] running `"docker" "rm" "-f" "b04249b7f34093ce7c2b1c5fa0440c63767f29fb406b9336bcb4df8dbaa1b260"`
[INFO] [stdout] b04249b7f34093ce7c2b1c5fa0440c63767f29fb406b9336bcb4df8dbaa1b260
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05802b431d3879bbfa4cc6e80fc7ad85f1530fe35f6fbb6dda19bfbdde0bbd34
[INFO] running `"docker" "start" "-a" "05802b431d3879bbfa4cc6e80fc7ad85f1530fe35f6fbb6dda19bfbdde0bbd34"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr]    |             ^^^^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr] 69 |             _Ident => "Ident",
[INFO] [stderr]    |             ^^^^^^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/token.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             -------- matches any value
[INFO] [stderr] ...
[INFO] [stderr] 70 |             _ => "Unimplemented!"
[INFO] [stderr]    |             ^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expression`
[INFO] [stderr]   --> src/ast.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Expression(Expression),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]   --> src/ast.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Literal(Literal),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]   --> src/ast.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     Int(i32),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/ast.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bool`
[INFO] [stderr]   --> src/ast.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     Bool(bool)
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `token_literal`
[INFO] [stderr]    --> src/ast.rs:111:12
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn token_literal(&self) -> String {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `errors`
[INFO] [stderr]   --> src/parser.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn errors(&self) -> &Vec<String> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_Illegal` should have a snake case name
[INFO] [stderr]   --> src/token.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             _Illegal => "Illegal",
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `_illegal`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_EOF` should have a snake case name
[INFO] [stderr]   --> src/token.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             _EOF => "EOF",
[INFO] [stderr]    |             ^^^^ help: convert the identifier to snake case: `_eof`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_Ident` should have a snake case name
[INFO] [stderr]   --> src/token.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             _Ident => "Ident",
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `_ident`
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/monkey-60cb66de33526d04
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test lexer::test::test_next_token_2 ... ok
[INFO] [stdout] test parser::test::test_return_statement ... ok
[INFO] [stdout] test ast::test::test_string ... ok
[INFO] [stdout] test lexer::test::test_next_token ... ok
[INFO] [stdout] test lexer::test::test_next_token_3 ... ok
[INFO] [stdout] test lexer::test::test_next_token_4 ... ok
[INFO] [stdout] test parser::test::test_let_statements ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "05802b431d3879bbfa4cc6e80fc7ad85f1530fe35f6fbb6dda19bfbdde0bbd34"`
[INFO] running `"docker" "rm" "-f" "05802b431d3879bbfa4cc6e80fc7ad85f1530fe35f6fbb6dda19bfbdde0bbd34"`
[INFO] [stdout] 05802b431d3879bbfa4cc6e80fc7ad85f1530fe35f6fbb6dda19bfbdde0bbd34