[INFO] updating cached repository KoharaKazuya/forest
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KoharaKazuya/forest
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KoharaKazuya/forest" "work/ex/clippy-test-run/sources/stable/gh/KoharaKazuya/forest"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/KoharaKazuya/forest'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KoharaKazuya/forest" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/KoharaKazuya/forest"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/KoharaKazuya/forest'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0f2ae009c6092d49bed24efcf1a261fdd4e8a7fe
[INFO] sha for GitHub repo KoharaKazuya/forest: 0f2ae009c6092d49bed24efcf1a261fdd4e8a7fe
[INFO] validating manifest of KoharaKazuya/forest 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 KoharaKazuya/forest 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 KoharaKazuya/forest
[INFO] finished frobbing KoharaKazuya/forest
[INFO] frobbed toml for KoharaKazuya/forest written to work/ex/clippy-test-run/sources/stable/gh/KoharaKazuya/forest/Cargo.toml
[INFO] started frobbing KoharaKazuya/forest
[INFO] finished frobbing KoharaKazuya/forest
[INFO] frobbed toml for KoharaKazuya/forest written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/KoharaKazuya/forest/Cargo.toml
[INFO] crate KoharaKazuya/forest 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 KoharaKazuya/forest against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/KoharaKazuya/forest:/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] 47b70e3eb3504540daedafc79c0b7dd2d7782a4b0ba4ae6f9cf1bb7913d06c52
[INFO] running `"docker" "start" "-a" "47b70e3eb3504540daedafc79c0b7dd2d7782a4b0ba4ae6f9cf1bb7913d06c52"`
[INFO] [stderr]     Checking forest v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/entry.rs:22:7
[INFO] [stderr]    |
[INFO] [stderr] 22 |       depth: depth,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `depth`
[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/entry.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 |       shape: shape,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `shape`
[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/tree_formatter.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 |       writer: writer,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `writer`
[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: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/tree_formatter.rs:39:7
[INFO] [stderr]    |
[INFO] [stderr] 39 |       write!(self.writer, "{}{}\n", ng, entry.name);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/entry.rs:22:7
[INFO] [stderr]    |
[INFO] [stderr] 22 |       depth: depth,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `depth`
[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/entry.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 |       shape: shape,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `shape`
[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/tree_formatter.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 |       writer: writer,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `writer`
[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: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/tree_formatter.rs:39:7
[INFO] [stderr]    |
[INFO] [stderr] 39 |       write!(self.writer, "{}{}\n", ng, entry.name);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/tree_buider.rs:20:11
[INFO] [stderr]    |
[INFO] [stderr] 20 |     while self.ancestors.len() > 0 {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.ancestors.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: length comparison to zero
[INFO] [stderr]   --> src/tree_buider.rs:20:11
[INFO] [stderr]    |
[INFO] [stderr] 20 |     while self.ancestors.len() > 0 {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.ancestors.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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tree_formatter.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         write!(self.writer, "{}", match *shape {
[INFO] [stderr] 29 | |           Shape::Open => &self.ancestor_guide_open,
[INFO] [stderr] 30 | |           Shape::Close => &self.ancestor_guide_close,
[INFO] [stderr] 31 | |           _ => panic!("Unexpected Internal Value\nPerhaps, internal logic error...\nformatter can treat with only Open/Close Shape"),
[INFO] [stderr] 32 | |         });
[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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tree_formatter.rs:39:7
[INFO] [stderr]    |
[INFO] [stderr] 39 |       write!(self.writer, "{}{}\n", ng, entry.name);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     match r {
[INFO] [stderr] 13 | |       Ok(line) => builder.append(&line),
[INFO] [stderr] 14 | |       _ => ()
[INFO] [stderr] 15 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Ok(line) = r { builder.append(&line) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tree_formatter.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         write!(self.writer, "{}", match *shape {
[INFO] [stderr] 29 | |           Shape::Open => &self.ancestor_guide_open,
[INFO] [stderr] 30 | |           Shape::Close => &self.ancestor_guide_close,
[INFO] [stderr] 31 | |           _ => panic!("Unexpected Internal Value\nPerhaps, internal logic error...\nformatter can treat with only Open/Close Shape"),
[INFO] [stderr] 32 | |         });
[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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/tree_formatter.rs:39:7
[INFO] [stderr]    |
[INFO] [stderr] 39 |       write!(self.writer, "{}{}\n", ng, entry.name);
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     match r {
[INFO] [stderr] 13 | |       Ok(line) => builder.append(&line),
[INFO] [stderr] 14 | |       _ => ()
[INFO] [stderr] 15 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Ok(line) = r { builder.append(&line) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "47b70e3eb3504540daedafc79c0b7dd2d7782a4b0ba4ae6f9cf1bb7913d06c52"`
[INFO] running `"docker" "rm" "-f" "47b70e3eb3504540daedafc79c0b7dd2d7782a4b0ba4ae6f9cf1bb7913d06c52"`
[INFO] [stdout] 47b70e3eb3504540daedafc79c0b7dd2d7782a4b0ba4ae6f9cf1bb7913d06c52