[INFO] updating cached repository shhr1214/monkey-rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/shhr1214/monkey-rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/shhr1214/monkey-rust" "work/ex/clippy-test-run/sources/stable/gh/shhr1214/monkey-rust"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/shhr1214/monkey-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/shhr1214/monkey-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/shhr1214/monkey-rust"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/shhr1214/monkey-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6e7417e7d882167ace1bab1acca2b301b70e27a9 [INFO] sha for GitHub repo shhr1214/monkey-rust: 6e7417e7d882167ace1bab1acca2b301b70e27a9 [INFO] validating manifest of shhr1214/monkey-rust on toolchain stable [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of shhr1214/monkey-rust on toolchain stable+rustflags=-Dclippy::into_iter_on_array [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing shhr1214/monkey-rust [INFO] finished frobbing shhr1214/monkey-rust [INFO] frobbed toml for shhr1214/monkey-rust written to work/ex/clippy-test-run/sources/stable/gh/shhr1214/monkey-rust/Cargo.toml [INFO] started frobbing shhr1214/monkey-rust [INFO] finished frobbing shhr1214/monkey-rust [INFO] frobbed toml for shhr1214/monkey-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/shhr1214/monkey-rust/Cargo.toml [INFO] crate shhr1214/monkey-rust has a lockfile. skipping [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] linting shhr1214/monkey-rust against stable for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/shhr1214/monkey-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"` [INFO] [stdout] e93e437284246fb0afe56a6a796a1df0eb245524ed48ba0bcf5075ae7310a2d8 [INFO] running `"docker" "start" "-a" "e93e437284246fb0afe56a6a796a1df0eb245524ed48ba0bcf5075ae7310a2d8"` [INFO] [stderr] Checking monkey-rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/lexer.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | input: input, [INFO] [stderr] | ^^^^^^^^^^^^ help: replace it with: `input` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::redundant_field_names)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/lexer.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | ch: ch, [INFO] [stderr] | ^^^^^^ help: replace it with: `ch` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/parser.rs:17:13 [INFO] [stderr] | [INFO] [stderr] 17 | lexer: lexer, [INFO] [stderr] | ^^^^^^^^^^^^ help: replace it with: `lexer` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/parser.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | cur_token: cur_token, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `cur_token` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/parser.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | peek_token: peek_token, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `peek_token` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/token.rs:51:13 [INFO] [stderr] | [INFO] [stderr] 51 | token_type: token_type, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `token_type` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/token.rs:52:13 [INFO] [stderr] | [INFO] [stderr] 52 | literal: literal, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: replace it with: `literal` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/lexer.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | input: input, [INFO] [stderr] | ^^^^^^^^^^^^ help: replace it with: `input` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::redundant_field_names)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/lexer.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | ch: ch, [INFO] [stderr] | ^^^^^^ help: replace it with: `ch` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/parser.rs:17:13 [INFO] [stderr] | [INFO] [stderr] 17 | lexer: lexer, [INFO] [stderr] | ^^^^^^^^^^^^ help: replace it with: `lexer` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/parser.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | cur_token: cur_token, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `cur_token` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/parser.rs:19:13 [INFO] [stderr] | [INFO] [stderr] 19 | peek_token: peek_token, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `peek_token` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/token.rs:51:13 [INFO] [stderr] | [INFO] [stderr] 51 | token_type: token_type, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `token_type` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/token.rs:52:13 [INFO] [stderr] | [INFO] [stderr] 52 | literal: literal, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: replace it with: `literal` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: unused import: `token::Token` [INFO] [stderr] --> src/ast.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use token::Token; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Node`, `Statement` [INFO] [stderr] --> src/parser.rs:1:11 [INFO] [stderr] | [INFO] [stderr] 1 | use ast::{Node, Program, Statement}; [INFO] [stderr] | ^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `token` [INFO] [stderr] --> src/parser.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use token; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Result` [INFO] [stderr] --> src/repl.rs:1:41 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io::{BufRead, BufReader, Read, Result, Write}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:1:21 [INFO] [stderr] | [INFO] [stderr] 1 | pub const ILLEGAL: &'static str = "ILLEGAL"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::const_static_lifetime)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:2:17 [INFO] [stderr] | [INFO] [stderr] 2 | pub const EOF: &'static str = "EOF"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:5:19 [INFO] [stderr] | [INFO] [stderr] 5 | pub const IDENT: &'static str = "IDENT"; // add, foobar, x, y, ... [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:6:17 [INFO] [stderr] | [INFO] [stderr] 6 | pub const INT: &'static str = "INT"; // 1234567890 [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:9:20 [INFO] [stderr] | [INFO] [stderr] 9 | pub const ASSIGN: &'static str = "="; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:10:18 [INFO] [stderr] | [INFO] [stderr] 10 | pub const PLUS: &'static str = "+"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:11:19 [INFO] [stderr] | [INFO] [stderr] 11 | pub const MINUS: &'static str = "-"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:12:18 [INFO] [stderr] | [INFO] [stderr] 12 | pub const BANG: &'static str = "!"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:13:22 [INFO] [stderr] | [INFO] [stderr] 13 | pub const ASTERISK: &'static str = "*"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:14:19 [INFO] [stderr] | [INFO] [stderr] 14 | pub const SLASH: &'static str = "/"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:16:16 [INFO] [stderr] | [INFO] [stderr] 16 | pub const LT: &'static str = "<"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:17:16 [INFO] [stderr] | [INFO] [stderr] 17 | pub const GT: &'static str = ">"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:19:16 [INFO] [stderr] | [INFO] [stderr] 19 | pub const EQ: &'static str = "=="; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:20:20 [INFO] [stderr] | [INFO] [stderr] 20 | pub const NOT_EQ: &'static str = "!="; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:23:19 [INFO] [stderr] | [INFO] [stderr] 23 | pub const COMMA: &'static str = ","; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:24:23 [INFO] [stderr] | [INFO] [stderr] 24 | pub const SEMICOLON: &'static str = ";"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:26:20 [INFO] [stderr] | [INFO] [stderr] 26 | pub const LPAREN: &'static str = "("; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:27:20 [INFO] [stderr] | [INFO] [stderr] 27 | pub const RPAREN: &'static str = ")"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:28:20 [INFO] [stderr] | [INFO] [stderr] 28 | pub const LBRACE: &'static str = "{"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:29:20 [INFO] [stderr] | [INFO] [stderr] 29 | pub const RBRACE: &'static str = "}"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:32:22 [INFO] [stderr] | [INFO] [stderr] 32 | pub const FUNCTION: &'static str = "FUNCTION"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:33:17 [INFO] [stderr] | [INFO] [stderr] 33 | pub const LET: &'static str = "LET"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:34:18 [INFO] [stderr] | [INFO] [stderr] 34 | pub const TRUE: &'static str = "TRUE"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:35:19 [INFO] [stderr] | [INFO] [stderr] 35 | pub const FALSE: &'static str = "FALSE"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:36:16 [INFO] [stderr] | [INFO] [stderr] 36 | pub const IF: &'static str = "IF"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:37:18 [INFO] [stderr] | [INFO] [stderr] 37 | pub const ELSE: &'static str = "ELSE"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:38:20 [INFO] [stderr] | [INFO] [stderr] 38 | pub const RETURN: &'static str = "RETURN"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: unused import: `token::Token` [INFO] [stderr] --> src/ast.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use token::Token; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Node` [INFO] [stderr] --> src/parser.rs:1:11 [INFO] [stderr] | [INFO] [stderr] 1 | use ast::{Node, Program, Statement}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Result` [INFO] [stderr] --> src/repl.rs:1:41 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io::{BufRead, BufReader, Read, Result, Write}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:1:21 [INFO] [stderr] | [INFO] [stderr] 1 | pub const ILLEGAL: &'static str = "ILLEGAL"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::const_static_lifetime)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:2:17 [INFO] [stderr] | [INFO] [stderr] 2 | pub const EOF: &'static str = "EOF"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:5:19 [INFO] [stderr] | [INFO] [stderr] 5 | pub const IDENT: &'static str = "IDENT"; // add, foobar, x, y, ... [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:6:17 [INFO] [stderr] | [INFO] [stderr] 6 | pub const INT: &'static str = "INT"; // 1234567890 [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:9:20 [INFO] [stderr] | [INFO] [stderr] 9 | pub const ASSIGN: &'static str = "="; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:10:18 [INFO] [stderr] | [INFO] [stderr] 10 | pub const PLUS: &'static str = "+"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:11:19 [INFO] [stderr] | [INFO] [stderr] 11 | pub const MINUS: &'static str = "-"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:12:18 [INFO] [stderr] | [INFO] [stderr] 12 | pub const BANG: &'static str = "!"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:13:22 [INFO] [stderr] | [INFO] [stderr] 13 | pub const ASTERISK: &'static str = "*"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:14:19 [INFO] [stderr] | [INFO] [stderr] 14 | pub const SLASH: &'static str = "/"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:16:16 [INFO] [stderr] | [INFO] [stderr] 16 | pub const LT: &'static str = "<"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:17:16 [INFO] [stderr] | [INFO] [stderr] 17 | pub const GT: &'static str = ">"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:19:16 [INFO] [stderr] | [INFO] [stderr] 19 | pub const EQ: &'static str = "=="; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:20:20 [INFO] [stderr] | [INFO] [stderr] 20 | pub const NOT_EQ: &'static str = "!="; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:23:19 [INFO] [stderr] | [INFO] [stderr] 23 | pub const COMMA: &'static str = ","; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:24:23 [INFO] [stderr] | [INFO] [stderr] 24 | pub const SEMICOLON: &'static str = ";"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:26:20 [INFO] [stderr] | [INFO] [stderr] 26 | pub const LPAREN: &'static str = "("; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:27:20 [INFO] [stderr] | [INFO] [stderr] 27 | pub const RPAREN: &'static str = ")"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:28:20 [INFO] [stderr] | [INFO] [stderr] 28 | pub const LBRACE: &'static str = "{"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:29:20 [INFO] [stderr] | [INFO] [stderr] 29 | pub const RBRACE: &'static str = "}"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:32:22 [INFO] [stderr] | [INFO] [stderr] 32 | pub const FUNCTION: &'static str = "FUNCTION"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:33:17 [INFO] [stderr] | [INFO] [stderr] 33 | pub const LET: &'static str = "LET"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:34:18 [INFO] [stderr] | [INFO] [stderr] 34 | pub const TRUE: &'static str = "TRUE"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:35:19 [INFO] [stderr] | [INFO] [stderr] 35 | pub const FALSE: &'static str = "FALSE"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:36:16 [INFO] [stderr] | [INFO] [stderr] 36 | pub const IF: &'static str = "IF"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:37:18 [INFO] [stderr] | [INFO] [stderr] 37 | pub const ELSE: &'static str = "ELSE"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/token.rs:38:20 [INFO] [stderr] | [INFO] [stderr] 38 | pub const RETURN: &'static str = "RETURN"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Statement` [INFO] [stderr] --> src/ast.rs:8:1 [INFO] [stderr] | [INFO] [stderr] 8 | pub enum Statement { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Expression` [INFO] [stderr] --> src/ast.rs:22:1 [INFO] [stderr] | [INFO] [stderr] 22 | pub struct Expression {} [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Program` [INFO] [stderr] --> src/ast.rs:24:1 [INFO] [stderr] | [INFO] [stderr] 24 | pub struct Program { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/ast.rs:29:5 [INFO] [stderr] | [INFO] [stderr] 29 | pub fn new() -> Program { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `statements` [INFO] [stderr] --> src/ast.rs:35:5 [INFO] [stderr] | [INFO] [stderr] 35 | pub fn statements(self) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Identifier` [INFO] [stderr] --> src/ast.rs:53:1 [INFO] [stderr] | [INFO] [stderr] 53 | pub struct Identifier(pub String); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Parser` [INFO] [stderr] --> src/parser.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | struct Parser { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/parser.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | pub fn new(mut lexer: Lexer) -> Parser { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `next_token` [INFO] [stderr] --> src/parser.rs:23:5 [INFO] [stderr] | [INFO] [stderr] 23 | fn next_token(mut self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `parse_program` [INFO] [stderr] --> src/parser.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | fn parse_program(&self) -> Program { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `literal` [INFO] [stderr] --> src/token.rs:60:5 [INFO] [stderr] | [INFO] [stderr] 60 | pub fn literal(&self) -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/ast.rs:42:12 [INFO] [stderr] | [INFO] [stderr] 42 | if self.statements.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.statements.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: use of `unwrap_or` followed by a function call [INFO] [stderr] --> src/lexer.rs:17:39 [INFO] [stderr] | [INFO] [stderr] 17 | let ch = input.chars().nth(0).unwrap_or(char::from(0)) as u8; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| char::from(0))` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::or_fun_call)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call [INFO] [stderr] [INFO] [stderr] warning: use of `unwrap_or` followed by a function call [INFO] [stderr] --> src/lexer.rs:34:18 [INFO] [stderr] | [INFO] [stderr] 34 | .unwrap_or(char::from(0)) as u8; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| char::from(0))` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call [INFO] [stderr] [INFO] [stderr] warning: use of `unwrap_or` followed by a function call [INFO] [stderr] --> src/lexer.rs:47:18 [INFO] [stderr] | [INFO] [stderr] 47 | .unwrap_or(char::from(0)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| char::from(0))` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | output.write(PROMPT.as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | output.flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:20:13 [INFO] [stderr] | [INFO] [stderr] 20 | output.write(token.display().as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:21:13 [INFO] [stderr] | [INFO] [stderr] 21 | output.write("\n".as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | output.flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:24:9 [INFO] [stderr] | [INFO] [stderr] 24 | output.write(PROMPT.as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | output.flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/parser.rs:65:40 [INFO] [stderr] | [INFO] [stderr] 65 | Statement::LetStatement(i, e) => { [INFO] [stderr] | ^ help: consider using `_e` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `LetStatement` [INFO] [stderr] --> src/ast.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | LetStatement(Identifier, Expression), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ExpressionStatement` [INFO] [stderr] --> src/ast.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | ExpressionStatement(Expression), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `lexer` [INFO] [stderr] --> src/parser.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | lexer: Lexer, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `cur_token` [INFO] [stderr] --> src/parser.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | cur_token: Token, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `peek_token` [INFO] [stderr] --> src/parser.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | peek_token: Token, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `next_token` [INFO] [stderr] --> src/parser.rs:23:5 [INFO] [stderr] | [INFO] [stderr] 23 | fn next_token(mut self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/ast.rs:42:12 [INFO] [stderr] | [INFO] [stderr] 42 | if self.statements.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.statements.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: use of `unwrap_or` followed by a function call [INFO] [stderr] --> src/lexer.rs:17:39 [INFO] [stderr] | [INFO] [stderr] 17 | let ch = input.chars().nth(0).unwrap_or(char::from(0)) as u8; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| char::from(0))` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::or_fun_call)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call [INFO] [stderr] [INFO] [stderr] warning: use of `unwrap_or` followed by a function call [INFO] [stderr] --> src/lexer.rs:34:18 [INFO] [stderr] | [INFO] [stderr] 34 | .unwrap_or(char::from(0)) as u8; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| char::from(0))` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call [INFO] [stderr] [INFO] [stderr] warning: use of `unwrap_or` followed by a function call [INFO] [stderr] --> src/lexer.rs:47:18 [INFO] [stderr] | [INFO] [stderr] 47 | .unwrap_or(char::from(0)) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| char::from(0))` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call [INFO] [stderr] [INFO] [stderr] warning: this creates an owned instance just for comparison [INFO] [stderr] --> src/parser.rs:60:18 [INFO] [stderr] | [INFO] [stderr] 60 | if tl != token::LET.to_string() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `token::LET` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cmp_owned)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | output.write(PROMPT.as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | output.flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:20:13 [INFO] [stderr] | [INFO] [stderr] 20 | output.write(token.display().as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:21:13 [INFO] [stderr] | [INFO] [stderr] 21 | output.write("\n".as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:22:13 [INFO] [stderr] | [INFO] [stderr] 22 | output.flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:24:9 [INFO] [stderr] | [INFO] [stderr] 24 | output.write(PROMPT.as_bytes()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/repl.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | output.flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.54s [INFO] running `"docker" "inspect" "e93e437284246fb0afe56a6a796a1df0eb245524ed48ba0bcf5075ae7310a2d8"` [INFO] running `"docker" "rm" "-f" "e93e437284246fb0afe56a6a796a1df0eb245524ed48ba0bcf5075ae7310a2d8"` [INFO] [stdout] e93e437284246fb0afe56a6a796a1df0eb245524ed48ba0bcf5075ae7310a2d8