[INFO] updating cached repository mamidon/rlox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mamidon/rlox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mamidon/rlox" "work/ex/clippy-test-run/sources/stable/gh/mamidon/rlox"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/mamidon/rlox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mamidon/rlox" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mamidon/rlox"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mamidon/rlox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fbeeb29db044b62e252b1b4719ecc026c1a16963
[INFO] sha for GitHub repo mamidon/rlox: fbeeb29db044b62e252b1b4719ecc026c1a16963
[INFO] validating manifest of mamidon/rlox 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 mamidon/rlox 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 mamidon/rlox
[INFO] finished frobbing mamidon/rlox
[INFO] frobbed toml for mamidon/rlox written to work/ex/clippy-test-run/sources/stable/gh/mamidon/rlox/Cargo.toml
[INFO] started frobbing mamidon/rlox
[INFO] finished frobbing mamidon/rlox
[INFO] frobbed toml for mamidon/rlox written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mamidon/rlox/Cargo.toml
[INFO] crate mamidon/rlox 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 mamidon/rlox against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mamidon/rlox:/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 -Dclippy::into_iter_on_array" "-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] da33195f18f9642880658503f4150450c908c5a9a5af21cc44f3d574ab890327
[INFO] running `"docker" "start" "-a" "da33195f18f9642880658503f4150450c908c5a9a5af21cc44f3d574ab890327"`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/scanning/seq.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         return s;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `s`
[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/scanning/seq.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         return result;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[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/scanning/tests.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     return tokens;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `tokens`
[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/scanning/mod.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |         return self.create_token(token_type);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.create_token(token_type)`
[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/scanning/mod.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |         return self.create_token(TokenType::Number);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.create_token(TokenType::Number)`
[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/scanning/mod.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |         return None;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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/scanning/mod.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |         return character;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `character`
[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/scanning/mod.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         return character;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `character`
[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/chunks.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return bytecode;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `bytecode`
[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/chunks.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         return instruction;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `instruction`
[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/chunks.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         return (2, Some((left, right)));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(2, Some((left, right)))`
[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/chunks.rs:120:9
[INFO] [stderr]     |
[INFO] [stderr] 120 |         return Some((self.constants.len() - 1) as u8);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some((self.constants.len() - 1) as u8)`
[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/scanning/seq.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         return s;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `s`
[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/runtime.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 143 |         return ExecutionResult::RuntimeError("Execution completed without a return statement");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ExecutionResult::RuntimeError("Execution completed without a return statement")`
[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/scanning/seq.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         return result;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[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/scanning/tests.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     return tokens;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `tokens`
[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/scanning/mod.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |         return self.create_token(token_type);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.create_token(token_type)`
[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/scanning/mod.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |         return self.create_token(TokenType::Number);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.create_token(TokenType::Number)`
[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/scanning/mod.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |         return None;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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/scanning/mod.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |         return character;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `character`
[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/scanning/mod.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |         return character;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `character`
[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/chunks.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return bytecode;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `bytecode`
[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/chunks.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         return instruction;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `instruction`
[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/chunks.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         return (2, Some((left, right)));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(2, Some((left, right)))`
[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/chunks.rs:120:9
[INFO] [stderr]     |
[INFO] [stderr] 120 |         return Some((self.constants.len() - 1) as u8);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some((self.constants.len() - 1) as u8)`
[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/runtime.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 143 |         return ExecutionResult::RuntimeError("Execution completed without a return statement");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ExecutionResult::RuntimeError("Execution completed without a return statement")`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/debug.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         offset = offset + bytes_consumed;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `offset += bytes_consumed`
[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: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]   --> src/scanning/mod.rs:63:16
[INFO] [stderr]    |
[INFO] [stderr] 63 |           if let None = next_character {
[INFO] [stderr]    |  _________-      ^^^^
[INFO] [stderr] 64 | |             return self.create_token(TokenType::EndOfFile);
[INFO] [stderr] 65 | |         }
[INFO] [stderr]    | |_________- help: try this: `if next_character.is_none()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/scanning/mod.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 | /         loop {
[INFO] [stderr] 135 | |             match self.source.peek_next().filter(|c| c.is_numeric()) {
[INFO] [stderr] 136 | |                 Some(_) => self.consume_and_append(),
[INFO] [stderr] 137 | |                 None => break
[INFO] [stderr] 138 | |             };
[INFO] [stderr] 139 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some(_) = self.source.peek_next().filter(|c| c.is_numeric()) { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/scanning/mod.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 | /             loop {
[INFO] [stderr] 145 | |                 match self.source.peek_next().filter(|c| c.is_numeric()) {
[INFO] [stderr] 146 | |                     Some(_) => self.consume_and_append(),
[INFO] [stderr] 147 | |                     None => break
[INFO] [stderr] 148 | |                 };
[INFO] [stderr] 149 | |             };
[INFO] [stderr]     | |_____________^ help: try: `while let Some(_) = self.source.peek_next().filter(|c| c.is_numeric()) { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]    --> src/scanning/mod.rs:209:16
[INFO] [stderr]     |
[INFO] [stderr] 209 |           if let Some(_) = character {
[INFO] [stderr]     |  _________-      ^^^^^^^
[INFO] [stderr] 210 | |             self.current_character += 1;
[INFO] [stderr] 211 | |         }
[INFO] [stderr]     | |_________- help: try this: `if character.is_some()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `foo`
[INFO] [stderr]    --> src/runtime.rs:209:30
[INFO] [stderr]     |
[INFO] [stderr] 209 |             LoxValue::Number(foo) => write!(f, "{}", foo),
[INFO] [stderr]     |                              ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::blacklisted_name)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/debug.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         offset = offset + bytes_consumed;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `offset += bytes_consumed`
[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: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]   --> src/scanning/mod.rs:63:16
[INFO] [stderr]    |
[INFO] [stderr] 63 |           if let None = next_character {
[INFO] [stderr]    |  _________-      ^^^^
[INFO] [stderr] 64 | |             return self.create_token(TokenType::EndOfFile);
[INFO] [stderr] 65 | |         }
[INFO] [stderr]    | |_________- help: try this: `if next_character.is_none()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/scanning/mod.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 | /         loop {
[INFO] [stderr] 135 | |             match self.source.peek_next().filter(|c| c.is_numeric()) {
[INFO] [stderr] 136 | |                 Some(_) => self.consume_and_append(),
[INFO] [stderr] 137 | |                 None => break
[INFO] [stderr] 138 | |             };
[INFO] [stderr] 139 | |         }
[INFO] [stderr]     | |_________^ help: try: `while let Some(_) = self.source.peek_next().filter(|c| c.is_numeric()) { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/scanning/mod.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 | /             loop {
[INFO] [stderr] 145 | |                 match self.source.peek_next().filter(|c| c.is_numeric()) {
[INFO] [stderr] 146 | |                     Some(_) => self.consume_and_append(),
[INFO] [stderr] 147 | |                     None => break
[INFO] [stderr] 148 | |                 };
[INFO] [stderr] 149 | |             };
[INFO] [stderr]     | |_____________^ help: try: `while let Some(_) = self.source.peek_next().filter(|c| c.is_numeric()) { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]    --> src/scanning/mod.rs:209:16
[INFO] [stderr]     |
[INFO] [stderr] 209 |           if let Some(_) = character {
[INFO] [stderr]     |  _________-      ^^^^^^^
[INFO] [stderr] 210 | |             self.current_character += 1;
[INFO] [stderr] 211 | |         }
[INFO] [stderr]     | |_________- help: try this: `if character.is_some()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: use of a blacklisted/placeholder name `foo`
[INFO] [stderr]    --> src/runtime.rs:209:30
[INFO] [stderr]     |
[INFO] [stderr] 209 |             LoxValue::Number(foo) => write!(f, "{}", foo),
[INFO] [stderr]     |                              ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::blacklisted_name)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blacklisted_name
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "da33195f18f9642880658503f4150450c908c5a9a5af21cc44f3d574ab890327"`
[INFO] running `"docker" "rm" "-f" "da33195f18f9642880658503f4150450c908c5a9a5af21cc44f3d574ab890327"`
[INFO] [stdout] da33195f18f9642880658503f4150450c908c5a9a5af21cc44f3d574ab890327