[INFO] cloning repository https://github.com/strangelovephd/rusty_interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/strangelovephd/rusty_interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrangelovephd%2Frusty_interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrangelovephd%2Frusty_interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 422e6cf00cb9681f0b308a4a7c977f7d1bd733e2
[INFO] checking strangelovephd/rusty_interpreter against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrangelovephd%2Frusty_interpreter" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strangelovephd/rusty_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/strangelovephd/rusty_interpreter
[INFO] finished tweaking git repo https://github.com/strangelovephd/rusty_interpreter
[INFO] tweaked toml for git repo https://github.com/strangelovephd/rusty_interpreter written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/strangelovephd/rusty_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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 9a31d3932533427445742243fef2fd21dee714b02796a17a9ad5bd42beeb7c5c
[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" "9a31d3932533427445742243fef2fd21dee714b02796a17a9ad5bd42beeb7c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a31d3932533427445742243fef2fd21dee714b02796a17a9ad5bd42beeb7c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a31d3932533427445742243fef2fd21dee714b02796a17a9ad5bd42beeb7c5c", kill_on_drop: false }`
[INFO] [stdout] 9a31d3932533427445742243fef2fd21dee714b02796a17a9ad5bd42beeb7c5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 01a71904b0d165400c3e22aa4e93e695e9152b619fcb32d4a5fa3612e9d0ee06
[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" "01a71904b0d165400c3e22aa4e93e695e9152b619fcb32d4a5fa3612e9d0ee06", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking rusty_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tests`
[INFO] [stdout]    --> src/token.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let tests: Vec<&str> = vec![
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_tests`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LexerError`
[INFO] [stdout]  --> src/token.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct LexerError {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Illegal`
[INFO] [stdout]   --> src/token.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Illegal(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IllegalIdent`
[INFO] [stdout]   --> src/token.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     IllegalIdent(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ident`
[INFO] [stdout]   --> src/token.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Ident(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/token.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Int(i32),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `look_up_token`
[INFO] [stdout]   --> src/token.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn look_up_token(tok: &str) -> Option<TokenType> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/token.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn new(tt: TokenType, lit: String) -> Token {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `look_up_keyword`
[INFO] [stdout]    --> src/token.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn look_up_keyword(kw: &str) -> Option<Keyword> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ILLEGAL`
[INFO] [stdout]    --> src/token.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub const ILLEGAL: &str = "ILLEGAL";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EOF`
[INFO] [stdout]    --> src/token.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub const EOF: &str = "EOF";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IDENT`
[INFO] [stdout]    --> src/token.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub const IDENT: &str = "IDENT";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INT`
[INFO] [stdout]    --> src/token.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub const INT: &str = "INT";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ASSIGN`
[INFO] [stdout]    --> src/token.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub const ASSIGN: &str = "=";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLUS`
[INFO] [stdout]    --> src/token.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub const PLUS: &str = "+";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COMMA`
[INFO] [stdout]    --> src/token.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub const COMMA: &str = ",";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SEMICOLON`
[INFO] [stdout]    --> src/token.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub const SEMICOLON: &str = ";";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LPAREN`
[INFO] [stdout]    --> src/token.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub const LPAREN: &str = "(";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RPAREN`
[INFO] [stdout]    --> src/token.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub const RPAREN: &str = ")";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LBRACE`
[INFO] [stdout]    --> src/token.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub const LBRACE: &str = "{";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RBRACE`
[INFO] [stdout]    --> src/token.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub const RBRACE: &str = "}";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FUNCTION`
[INFO] [stdout]    --> src/token.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub const FUNCTION: &str = "FUNCTION";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LET`
[INFO] [stdout]    --> src/token.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub const LET: &str = "LET";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Lexer`
[INFO] [stdout]  --> src/lexer.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Lexer {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lexer.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(i: Vec<u8>) -> Lexer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_char`
[INFO] [stdout]   --> src/lexer.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn read_char(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_token`
[INFO] [stdout]   --> src/lexer.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn next_token(&mut self) -> TokenType {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_letter`
[INFO] [stdout]    --> src/lexer.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn is_letter(ch: &u8) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_char`
[INFO] [stdout]    --> src/lexer.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn is_char(ch: &char) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_identifier`
[INFO] [stdout]    --> src/lexer.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn read_identifier(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_whitespace`
[INFO] [stdout]    --> src/lexer.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_number`
[INFO] [stdout]    --> src/lexer.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn read_number(&mut self) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_digit`
[INFO] [stdout]    --> src/lexer.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn is_digit(byte: &char) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LexerError`
[INFO] [stdout]  --> src/token.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct LexerError {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `IllegalIdent`
[INFO] [stdout]   --> src/token.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     IllegalIdent(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ILLEGAL`
[INFO] [stdout]    --> src/token.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub const ILLEGAL: &str = "ILLEGAL";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EOF`
[INFO] [stdout]    --> src/token.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub const EOF: &str = "EOF";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IDENT`
[INFO] [stdout]    --> src/token.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub const IDENT: &str = "IDENT";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INT`
[INFO] [stdout]    --> src/token.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub const INT: &str = "INT";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ASSIGN`
[INFO] [stdout]    --> src/token.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub const ASSIGN: &str = "=";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLUS`
[INFO] [stdout]    --> src/token.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub const PLUS: &str = "+";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COMMA`
[INFO] [stdout]    --> src/token.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub const COMMA: &str = ",";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SEMICOLON`
[INFO] [stdout]    --> src/token.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub const SEMICOLON: &str = ";";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LPAREN`
[INFO] [stdout]    --> src/token.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub const LPAREN: &str = "(";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RPAREN`
[INFO] [stdout]    --> src/token.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub const RPAREN: &str = ")";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LBRACE`
[INFO] [stdout]    --> src/token.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub const LBRACE: &str = "{";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `RBRACE`
[INFO] [stdout]    --> src/token.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub const RBRACE: &str = "}";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FUNCTION`
[INFO] [stdout]    --> src/token.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub const FUNCTION: &str = "FUNCTION";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LET`
[INFO] [stdout]    --> src/token.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub const LET: &str = "LET";
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_letter`
[INFO] [stdout]    --> src/lexer.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn is_letter(ch: &u8) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "01a71904b0d165400c3e22aa4e93e695e9152b619fcb32d4a5fa3612e9d0ee06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01a71904b0d165400c3e22aa4e93e695e9152b619fcb32d4a5fa3612e9d0ee06", kill_on_drop: false }`
[INFO] [stdout] 01a71904b0d165400c3e22aa4e93e695e9152b619fcb32d4a5fa3612e9d0ee06