[INFO] updating cached repository mzumi/writing-an-interpreter-in-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mzumi/writing-an-interpreter-in-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mzumi/writing-an-interpreter-in-rust" "work/ex/clippy-test-run/sources/stable/gh/mzumi/writing-an-interpreter-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/mzumi/writing-an-interpreter-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mzumi/writing-an-interpreter-in-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mzumi/writing-an-interpreter-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mzumi/writing-an-interpreter-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6b5d30edd90e7dfb45d75ed744c330db355fa562
[INFO] sha for GitHub repo mzumi/writing-an-interpreter-in-rust: 6b5d30edd90e7dfb45d75ed744c330db355fa562
[INFO] validating manifest of mzumi/writing-an-interpreter-in-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 mzumi/writing-an-interpreter-in-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 mzumi/writing-an-interpreter-in-rust
[INFO] finished frobbing mzumi/writing-an-interpreter-in-rust
[INFO] frobbed toml for mzumi/writing-an-interpreter-in-rust written to work/ex/clippy-test-run/sources/stable/gh/mzumi/writing-an-interpreter-in-rust/Cargo.toml
[INFO] started frobbing mzumi/writing-an-interpreter-in-rust
[INFO] finished frobbing mzumi/writing-an-interpreter-in-rust
[INFO] frobbed toml for mzumi/writing-an-interpreter-in-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mzumi/writing-an-interpreter-in-rust/Cargo.toml
[INFO] crate mzumi/writing-an-interpreter-in-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 mzumi/writing-an-interpreter-in-rust against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/mzumi/writing-an-interpreter-in-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] 5329a0ba883bcc2959036fefd9f77a0ba7f2deb81e1557051575a19bfb9ffa82
[INFO] running `"docker" "start" "-a" "5329a0ba883bcc2959036fefd9f77a0ba7f2deb81e1557051575a19bfb9ffa82"`
[INFO] [stderr]     Checking writing-an-interpreter-in-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lexer/lexer.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             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/token/token.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             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/token.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             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/ast/ast.rs:21:19
[INFO] [stderr]    |
[INFO] [stderr] 21 |         Program { statements: statements }
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `statements`
[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/ast/identifier.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `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/ast/identifier.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             value: value,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `value`
[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/ast/let_statement.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `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/ast/let_statement.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[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/ast/let_statement.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |             value: value,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `value`
[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/parse_error.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |         ParseError { kind: kind }
[INFO] [stderr]    |                      ^^^^^^^^^^ help: replace it with: `kind`
[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/parser.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             current_token: current_token,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `current_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/parser.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             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/parser/parser.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `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/parser.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[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/lexer.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             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/token/token.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             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/token.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             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/ast/ast.rs:21:19
[INFO] [stderr]    |
[INFO] [stderr] 21 |         Program { statements: statements }
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `statements`
[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/ast/identifier.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `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/ast/identifier.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             value: value,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `value`
[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/ast/let_statement.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `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/ast/let_statement.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[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/ast/let_statement.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |             value: value,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `value`
[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/parse_error.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |         ParseError { kind: kind }
[INFO] [stderr]    |                      ^^^^^^^^^^ help: replace it with: `kind`
[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/parser.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             current_token: current_token,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `current_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/parser.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             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/parser/parser.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `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/parser.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[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: module has the same name as its containing module
[INFO] [stderr]  --> src/lexer/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod lexer;
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/token/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod token;
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/repl/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod repl;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/ast/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod ast;
[INFO] [stderr]   | ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/parser/parse_error.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | /         return match self.kind {
[INFO] [stderr] 22 | |             ParseErrorKind::UnexpectedToken(ref p, ref t) => {
[INFO] [stderr] 23 | |                 format!("expected next token to be {}, got {} instead",
[INFO] [stderr] 24 | |                         t.clone(),
[INFO] [stderr] 25 | |                         p.clone().peek_token.token_type)
[INFO] [stderr] 26 | |             }
[INFO] [stderr] 27 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 21 |         match self.kind {
[INFO] [stderr] 22 |             ParseErrorKind::UnexpectedToken(ref p, ref t) => {
[INFO] [stderr] 23 |                 format!("expected next token to be {}, got {} instead",
[INFO] [stderr] 24 |                         t.clone(),
[INFO] [stderr] 25 |                         p.clone().peek_token.token_type)
[INFO] [stderr] 26 |             }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/parser/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/parser/parser.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 | /         return match self.current_token.token_type {
[INFO] [stderr] 51 | |             TokenType::Let => {
[INFO] [stderr] 52 | |                 let let_statement = self.parse_let_statement()?;
[INFO] [stderr] 53 | |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |             }
[INFO] [stderr] 67 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 50 |         match self.current_token.token_type {
[INFO] [stderr] 51 |             TokenType::Let => {
[INFO] [stderr] 52 |                 let let_statement = self.parse_let_statement()?;
[INFO] [stderr] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stderr] 54 |                 return s;
[INFO] [stderr] 55 |             }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/lexer/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod lexer;
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/token/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod token;
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/repl/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod repl;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/ast/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod ast;
[INFO] [stderr]   | ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/parser/parse_error.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | /         return match self.kind {
[INFO] [stderr] 22 | |             ParseErrorKind::UnexpectedToken(ref p, ref t) => {
[INFO] [stderr] 23 | |                 format!("expected next token to be {}, got {} instead",
[INFO] [stderr] 24 | |                         t.clone(),
[INFO] [stderr] 25 | |                         p.clone().peek_token.token_type)
[INFO] [stderr] 26 | |             }
[INFO] [stderr] 27 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 21 |         match self.kind {
[INFO] [stderr] 22 |             ParseErrorKind::UnexpectedToken(ref p, ref t) => {
[INFO] [stderr] 23 |                 format!("expected next token to be {}, got {} instead",
[INFO] [stderr] 24 |                         t.clone(),
[INFO] [stderr] 25 |                         p.clone().peek_token.token_type)
[INFO] [stderr] 26 |             }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/parser/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/parser/parser.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 | /         return match self.current_token.token_type {
[INFO] [stderr] 51 | |             TokenType::Let => {
[INFO] [stderr] 52 | |                 let let_statement = self.parse_let_statement()?;
[INFO] [stderr] 53 | |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |             }
[INFO] [stderr] 67 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 50 |         match self.current_token.token_type {
[INFO] [stderr] 51 |             TokenType::Let => {
[INFO] [stderr] 52 |                 let let_statement = self.parse_let_statement()?;
[INFO] [stderr] 53 |                 let s: Result<Box<Statement>, _> = Ok(Box::new(let_statement));
[INFO] [stderr] 54 |                 return s;
[INFO] [stderr] 55 |             }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/lexer/lexer.rs:44:64
[INFO] [stderr]    |
[INFO] [stderr] 44 |                         self.get_equal_or_not_equal_string(&c).unwrap_or(c.to_string())
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| c.to_string())`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lexer/lexer.rs:125:52
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn get_equal_or_not_equal_string(&mut self, c: &char) -> Option<String> {
[INFO] [stderr]     |                                                    ^^^^^ help: consider passing by value instead: `char`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lexer/lexer.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         self.input
[INFO] [stderr] 137 | |             .chars()
[INFO] [stderr] 138 | |             .collect::<Vec<char>>()
[INFO] [stderr] 139 | |             .get(position..self.position)
[INFO] [stderr] 140 | |             .unwrap()
[INFO] [stderr] 141 | |             .into_iter()
[INFO] [stderr] 142 | |             .map(|c| c.clone())
[INFO] [stderr]     | |_______________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 136 |         self.input
[INFO] [stderr] 137 |             .chars()
[INFO] [stderr] 138 |             .collect::<Vec<char>>()
[INFO] [stderr] 139 |             .get(position..self.position)
[INFO] [stderr] 140 |             .unwrap()
[INFO] [stderr] 141 |             .into_iter().cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the slice
[INFO] [stderr]    --> src/lexer/lexer.rs:141:14
[INFO] [stderr]     |
[INFO] [stderr] 141 |             .into_iter()
[INFO] [stderr]     |              ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lexer/lexer.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         self.input
[INFO] [stderr] 137 | |             .chars()
[INFO] [stderr] 138 | |             .collect::<Vec<char>>()
[INFO] [stderr] 139 | |             .get(position..self.position)
[INFO] [stderr] 140 | |             .unwrap()
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 136 |         self.input
[INFO] [stderr] 137 |             .chars()
[INFO] [stderr] 138 |             .collect::<Vec<char>>()[position..self.position]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lexer/lexer.rs:142:22
[INFO] [stderr]     |
[INFO] [stderr] 142 |             .map(|c| c.clone())
[INFO] [stderr]     |                      ^^^^^^^^^ help: try dereferencing it: `*c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/token/token_type.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn lookup_indent(indent: &String) -> Self {
[INFO] [stderr]    |                                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Matching on `Some` with `ok()` is redundant
[INFO] [stderr]   --> src/token/token_type.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         if let Some(t) = token_type.ok() {
[INFO] [stderr] 58 | |             if keywords.contains(&t) {
[INFO] [stderr] 59 | |                 return t;
[INFO] [stderr] 60 | |             }
[INFO] [stderr] 61 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::if_let_some_result)] on by default
[INFO] [stderr]    = help: Consider matching on `Ok(t)` and removing the call to `ok` instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_let_some_result
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/ast/ast.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |         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] error: this loop never actually loops
[INFO] [stderr]   --> src/ast/ast.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 | /             for n in self.statements.iter() {
[INFO] [stderr] 26 | |                 return n.token_literal();
[INFO] [stderr] 27 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/ast/return_statement.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         s = s + self.token_literal().as_str();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `s += self.token_literal().as_str()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/ast/return_statement.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |             s = s + expression.to_string().as_ref();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `s += expression.to_string().as_ref()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `writing-an-interpreter-in-rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/lexer/lexer.rs:44:64
[INFO] [stderr]    |
[INFO] [stderr] 44 |                         self.get_equal_or_not_equal_string(&c).unwrap_or(c.to_string())
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| c.to_string())`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lexer/lexer.rs:125:52
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn get_equal_or_not_equal_string(&mut self, c: &char) -> Option<String> {
[INFO] [stderr]     |                                                    ^^^^^ help: consider passing by value instead: `char`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lexer/lexer.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         self.input
[INFO] [stderr] 137 | |             .chars()
[INFO] [stderr] 138 | |             .collect::<Vec<char>>()
[INFO] [stderr] 139 | |             .get(position..self.position)
[INFO] [stderr] 140 | |             .unwrap()
[INFO] [stderr] 141 | |             .into_iter()
[INFO] [stderr] 142 | |             .map(|c| c.clone())
[INFO] [stderr]     | |_______________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 136 |         self.input
[INFO] [stderr] 137 |             .chars()
[INFO] [stderr] 138 |             .collect::<Vec<char>>()
[INFO] [stderr] 139 |             .get(position..self.position)
[INFO] [stderr] 140 |             .unwrap()
[INFO] [stderr] 141 |             .into_iter().cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the slice
[INFO] [stderr]    --> src/lexer/lexer.rs:141:14
[INFO] [stderr]     |
[INFO] [stderr] 141 |             .into_iter()
[INFO] [stderr]     |              ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lexer/lexer.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         self.input
[INFO] [stderr] 137 | |             .chars()
[INFO] [stderr] 138 | |             .collect::<Vec<char>>()
[INFO] [stderr] 139 | |             .get(position..self.position)
[INFO] [stderr] 140 | |             .unwrap()
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 136 |         self.input
[INFO] [stderr] 137 |             .chars()
[INFO] [stderr] 138 |             .collect::<Vec<char>>()[position..self.position]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lexer/lexer.rs:142:22
[INFO] [stderr]     |
[INFO] [stderr] 142 |             .map(|c| c.clone())
[INFO] [stderr]     |                      ^^^^^^^^^ help: try dereferencing it: `*c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/token/token_type.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn lookup_indent(indent: &String) -> Self {
[INFO] [stderr]    |                                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Matching on `Some` with `ok()` is redundant
[INFO] [stderr]   --> src/token/token_type.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         if let Some(t) = token_type.ok() {
[INFO] [stderr] 58 | |             if keywords.contains(&t) {
[INFO] [stderr] 59 | |                 return t;
[INFO] [stderr] 60 | |             }
[INFO] [stderr] 61 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::if_let_some_result)] on by default
[INFO] [stderr]    = help: Consider matching on `Ok(t)` and removing the call to `ok` instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_let_some_result
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/ast/ast.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |         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] error: this loop never actually loops
[INFO] [stderr]   --> src/ast/ast.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 | /             for n in self.statements.iter() {
[INFO] [stderr] 26 | |                 return n.token_literal();
[INFO] [stderr] 27 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/ast/return_statement.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         s = s + self.token_literal().as_str();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `s += self.token_literal().as_str()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/ast/return_statement.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |             s = s + expression.to_string().as_ref();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `s += expression.to_string().as_ref()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `writing-an-interpreter-in-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5329a0ba883bcc2959036fefd9f77a0ba7f2deb81e1557051575a19bfb9ffa82"`
[INFO] running `"docker" "rm" "-f" "5329a0ba883bcc2959036fefd9f77a0ba7f2deb81e1557051575a19bfb9ffa82"`
[INFO] [stdout] 5329a0ba883bcc2959036fefd9f77a0ba7f2deb81e1557051575a19bfb9ffa82