[INFO] updating cached repository Nyrox/celtic
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Nyrox/celtic
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Nyrox/celtic" "work/ex/clippy-test-run/sources/stable/gh/Nyrox/celtic"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Nyrox/celtic'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Nyrox/celtic" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Nyrox/celtic"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Nyrox/celtic'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e47cc259500019dafd71abcf99868fcd3e99fa5f
[INFO] sha for GitHub repo Nyrox/celtic: e47cc259500019dafd71abcf99868fcd3e99fa5f
[INFO] validating manifest of Nyrox/celtic 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 Nyrox/celtic 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 Nyrox/celtic
[INFO] finished frobbing Nyrox/celtic
[INFO] frobbed toml for Nyrox/celtic written to work/ex/clippy-test-run/sources/stable/gh/Nyrox/celtic/Cargo.toml
[INFO] started frobbing Nyrox/celtic
[INFO] finished frobbing Nyrox/celtic
[INFO] frobbed toml for Nyrox/celtic written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Nyrox/celtic/Cargo.toml
[INFO] crate Nyrox/celtic 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 Nyrox/celtic 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/Nyrox/celtic:/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] ef3cf4146b288047409ec5f683da52a1feab8846db889b7d0c6489549cc4c95f
[INFO] running `"docker" "start" "-a" "ef3cf4146b288047409ec5f683da52a1feab8846db889b7d0c6489549cc4c95f"`
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]    Compiling derive-error-chain v0.11.0
[INFO] [stderr]     Checking dotenv v0.11.0
[INFO] [stderr]     Checking nomorebullshit-compiler v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/macros.rs:14:2
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return Ok(MacroValue::STRING(buffer));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(MacroValue::STRING(buffer))`
[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] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:130:3
[INFO] [stderr]     |
[INFO] [stderr] 130 |         return output;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `output`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:56:4
[INFO] [stderr]     |
[INFO] [stderr] 56  |               if c == '#' {
[INFO] [stderr]     |  _____________^
[INFO] [stderr] 57  | |                 if chars.peek().unwrap() == &'[' {
[INFO] [stderr] 58  | |                     chars.next();
[INFO] [stderr] 59  | |                     // Heeey we encountered a macro
[INFO] [stderr] ...   |
[INFO] [stderr] 125 | |                 }
[INFO] [stderr] 126 | |             }            
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 56  |             if c == '#' && chars.peek().unwrap() == &'[' {
[INFO] [stderr] 57  |     chars.next();
[INFO] [stderr] 58  |     // Heeey we encountered a macro
[INFO] [stderr] 59  |     let mut macro_inner = (|| {
[INFO] [stderr] 60  |         let mut buffer = String::new();
[INFO] [stderr] 61  |         while let Some(c) = chars.next() {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:66:7
[INFO] [stderr]    |
[INFO] [stderr] 66 |                         return buffer;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:87:11
[INFO] [stderr]    |
[INFO] [stderr] 87 |                                         return buffer;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:187:2
[INFO] [stderr]     |
[INFO] [stderr] 187 |     return env::var(&arguments[0]).unwrap_or("undefined".to_string());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `env::var(&arguments[0]).unwrap_or("undefined".to_string())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:252:2
[INFO] [stderr]     |
[INFO] [stderr] 252 |     return arguments;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `arguments`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:265:2
[INFO] [stderr]     |
[INFO] [stderr] 265 |     return buffer;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:276:2
[INFO] [stderr]     |
[INFO] [stderr] 276 |     return buffer;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/macros.rs:14:2
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return Ok(MacroValue::STRING(buffer));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(MacroValue::STRING(buffer))`
[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] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:130:3
[INFO] [stderr]     |
[INFO] [stderr] 130 |         return output;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `output`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:56:4
[INFO] [stderr]     |
[INFO] [stderr] 56  |               if c == '#' {
[INFO] [stderr]     |  _____________^
[INFO] [stderr] 57  | |                 if chars.peek().unwrap() == &'[' {
[INFO] [stderr] 58  | |                     chars.next();
[INFO] [stderr] 59  | |                     // Heeey we encountered a macro
[INFO] [stderr] ...   |
[INFO] [stderr] 125 | |                 }
[INFO] [stderr] 126 | |             }            
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 56  |             if c == '#' && chars.peek().unwrap() == &'[' {
[INFO] [stderr] 57  |     chars.next();
[INFO] [stderr] 58  |     // Heeey we encountered a macro
[INFO] [stderr] 59  |     let mut macro_inner = (|| {
[INFO] [stderr] 60  |         let mut buffer = String::new();
[INFO] [stderr] 61  |         while let Some(c) = chars.next() {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:66:7
[INFO] [stderr]    |
[INFO] [stderr] 66 |                         return buffer;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:87:11
[INFO] [stderr]    |
[INFO] [stderr] 87 |                                         return buffer;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:187:2
[INFO] [stderr]     |
[INFO] [stderr] 187 |     return env::var(&arguments[0]).unwrap_or("undefined".to_string());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `env::var(&arguments[0]).unwrap_or("undefined".to_string())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:252:2
[INFO] [stderr]     |
[INFO] [stderr] 252 |     return arguments;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `arguments`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:265:2
[INFO] [stderr]     |
[INFO] [stderr] 265 |     return buffer;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:276:2
[INFO] [stderr]     |
[INFO] [stderr] 276 |     return buffer;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/main.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if let Some(input) = options.input {
[INFO] [stderr]     |                     ^^^^^ help: consider using `_input` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:167:6
[INFO] [stderr]     |
[INFO] [stderr] 167 |     let mut output = ExecutionContext::new(&buffer).execute();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `env`
[INFO] [stderr]    --> src/main.rs:186:1
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn env(arguments: Vec<String>) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_word_if`
[INFO] [stderr]    --> src/main.rs:268:1
[INFO] [stderr]     |
[INFO] [stderr] 268 | fn parse_word_if<It: Iterator<Item=char>, Cond: Fn(char) -> bool>(chars: &mut It, cond: Cond) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/main.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         while let Some(c) = chars.next() {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: try: `for c in chars { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_on_iterator)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/main.rs:83:31
[INFO] [stderr]    |
[INFO] [stderr] 83 |                                         while let Some(c) = chars.next() {
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^ help: try: `for c in chars { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:164:2
[INFO] [stderr]     |
[INFO] [stderr] 164 |     input_file.read_to_string(&mut buffer);
[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: variable `outFile` should have a snake case name such as `out_file`
[INFO] [stderr]    --> src/main.rs:171:6
[INFO] [stderr]     |
[INFO] [stderr] 171 |     let mut outFile = File::create(options.out.unwrap()).unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:172:2
[INFO] [stderr]     |
[INFO] [stderr] 172 |     outFile.write_all(output.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: use of `unwrap_or` followed by a function call
[INFO] [stderr]    --> src/main.rs:187:33
[INFO] [stderr]     |
[INFO] [stderr] 187 |     return env::var(&arguments[0]).unwrap_or("undefined".to_string());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "undefined".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: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/main.rs:202:2
[INFO] [stderr]     |
[INFO] [stderr] 202 |       let mut arguments = Vec::new();
[INFO] [stderr]     |  _____^
[INFO] [stderr] 203 | |     if chars.peek().unwrap().is_alphanumeric() {
[INFO] [stderr] 204 | |         arguments = parse_arguments(&mut chars);
[INFO] [stderr] 205 | |     }
[INFO] [stderr]     | |_____^ help: it is more idiomatic to write: `let <mut> arguments = if chars.peek().unwrap().is_alphanumeric() { parse_arguments(&mut chars) } else { Vec::new() };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]    --> src/main.rs:271:22
[INFO] [stderr]     |
[INFO] [stderr] 271 |     while let Some(c) = chars.next() {
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try: `for c in chars { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/main.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if let Some(input) = options.input {
[INFO] [stderr]     |                     ^^^^^ help: consider using `_input` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:167:6
[INFO] [stderr]     |
[INFO] [stderr] 167 |     let mut output = ExecutionContext::new(&buffer).execute();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `env`
[INFO] [stderr]    --> src/main.rs:186:1
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn env(arguments: Vec<String>) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_word_if`
[INFO] [stderr]    --> src/main.rs:268:1
[INFO] [stderr]     |
[INFO] [stderr] 268 | fn parse_word_if<It: Iterator<Item=char>, Cond: Fn(char) -> bool>(chars: &mut It, cond: Cond) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/main.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         while let Some(c) = chars.next() {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: try: `for c in chars { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_on_iterator)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/main.rs:83:31
[INFO] [stderr]    |
[INFO] [stderr] 83 |                                         while let Some(c) = chars.next() {
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^ help: try: `for c in chars { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:164:2
[INFO] [stderr]     |
[INFO] [stderr] 164 |     input_file.read_to_string(&mut buffer);
[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: variable `outFile` should have a snake case name such as `out_file`
[INFO] [stderr]    --> src/main.rs:171:6
[INFO] [stderr]     |
[INFO] [stderr] 171 |     let mut outFile = File::create(options.out.unwrap()).unwrap();
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:172:2
[INFO] [stderr]     |
[INFO] [stderr] 172 |     outFile.write_all(output.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: use of `unwrap_or` followed by a function call
[INFO] [stderr]    --> src/main.rs:187:33
[INFO] [stderr]     |
[INFO] [stderr] 187 |     return env::var(&arguments[0]).unwrap_or("undefined".to_string());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "undefined".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: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/main.rs:202:2
[INFO] [stderr]     |
[INFO] [stderr] 202 |       let mut arguments = Vec::new();
[INFO] [stderr]     |  _____^
[INFO] [stderr] 203 | |     if chars.peek().unwrap().is_alphanumeric() {
[INFO] [stderr] 204 | |         arguments = parse_arguments(&mut chars);
[INFO] [stderr] 205 | |     }
[INFO] [stderr]     | |_____^ help: it is more idiomatic to write: `let <mut> arguments = if chars.peek().unwrap().is_alphanumeric() { parse_arguments(&mut chars) } else { Vec::new() };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]    --> src/main.rs:271:22
[INFO] [stderr]     |
[INFO] [stderr] 271 |     while let Some(c) = chars.next() {
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try: `for c in chars { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.28s
[INFO] running `"docker" "inspect" "ef3cf4146b288047409ec5f683da52a1feab8846db889b7d0c6489549cc4c95f"`
[INFO] running `"docker" "rm" "-f" "ef3cf4146b288047409ec5f683da52a1feab8846db889b7d0c6489549cc4c95f"`
[INFO] [stdout] ef3cf4146b288047409ec5f683da52a1feab8846db889b7d0c6489549cc4c95f