[INFO] updating cached repository kunihiko-t/rust-tree
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kunihiko-t/rust-tree
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kunihiko-t/rust-tree" "work/ex/clippy-test-run/sources/stable/gh/kunihiko-t/rust-tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/kunihiko-t/rust-tree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kunihiko-t/rust-tree" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kunihiko-t/rust-tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kunihiko-t/rust-tree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 872a396fdda6f24956f41dcb6eeec2b77d92e578
[INFO] sha for GitHub repo kunihiko-t/rust-tree: 872a396fdda6f24956f41dcb6eeec2b77d92e578
[INFO] validating manifest of kunihiko-t/rust-tree 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 kunihiko-t/rust-tree 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 kunihiko-t/rust-tree
[INFO] finished frobbing kunihiko-t/rust-tree
[INFO] frobbed toml for kunihiko-t/rust-tree written to work/ex/clippy-test-run/sources/stable/gh/kunihiko-t/rust-tree/Cargo.toml
[INFO] started frobbing kunihiko-t/rust-tree
[INFO] finished frobbing kunihiko-t/rust-tree
[INFO] frobbed toml for kunihiko-t/rust-tree written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kunihiko-t/rust-tree/Cargo.toml
[INFO] crate kunihiko-t/rust-tree 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 kunihiko-t/rust-tree against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/kunihiko-t/rust-tree:/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] a95a3d6bba1f939d025ceac86aad701f16435a8fe2b376f4531f5990dfed08b2
[INFO] running `"docker" "start" "-a" "a95a3d6bba1f939d025ceac86aad701f16435a8fe2b376f4531f5990dfed08b2"`
[INFO] [stderr]     Checking rust-tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/main.rs:105:36
[INFO] [stderr]     |
[INFO] [stderr] 105 |             print!("{}{}", indent, "└──")
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/main.rs:107:36
[INFO] [stderr]     |
[INFO] [stderr] 107 |             print!("{}{}", indent, "├──")
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/main.rs:105:36
[INFO] [stderr]     |
[INFO] [stderr] 105 |             print!("{}{}", indent, "└──")
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/main.rs:107:36
[INFO] [stderr]     |
[INFO] [stderr] 107 |             print!("{}{}", indent, "├──")
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     md
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/main.rs:54:14
[INFO] [stderr]    |
[INFO] [stderr] 54 |       let md = match f {
[INFO] [stderr]    |  ______________^
[INFO] [stderr] 55 | |         Ok(v) => v,
[INFO] [stderr] 56 | |         Err(e) => {
[INFO] [stderr] 57 | |             println!("{}", e);
[INFO] [stderr] 58 | |             process::exit(1);
[INFO] [stderr] 59 | |         }
[INFO] [stderr] 60 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fis
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/main.rs:66:15
[INFO] [stderr]    |
[INFO] [stderr] 66 |       let fis = match d {
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 67 | |         Ok(v) => v,
[INFO] [stderr] 68 | |         Err(e) => {
[INFO] [stderr] 69 | |             println!("Could not read directory {}. {}", path.to_str().unwrap(), e);
[INFO] [stderr] 70 | |             process::exit(1);
[INFO] [stderr] 71 | |         }
[INFO] [stderr] 72 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:98:13
[INFO] [stderr]    |
[INFO] [stderr] 98 |             return true;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     md
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/main.rs:54:14
[INFO] [stderr]    |
[INFO] [stderr] 54 |       let md = match f {
[INFO] [stderr]    |  ______________^
[INFO] [stderr] 55 | |         Ok(v) => v,
[INFO] [stderr] 56 | |         Err(e) => {
[INFO] [stderr] 57 | |             println!("{}", e);
[INFO] [stderr] 58 | |             process::exit(1);
[INFO] [stderr] 59 | |         }
[INFO] [stderr] 60 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fis
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/main.rs:66:15
[INFO] [stderr]    |
[INFO] [stderr] 66 |       let fis = match d {
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 67 | |         Ok(v) => v,
[INFO] [stderr] 68 | |         Err(e) => {
[INFO] [stderr] 69 | |             println!("Could not read directory {}. {}", path.to_str().unwrap(), e);
[INFO] [stderr] 70 | |             process::exit(1);
[INFO] [stderr] 71 | |         }
[INFO] [stderr] 72 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:98:13
[INFO] [stderr]    |
[INFO] [stderr] 98 |             return true;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:90:30
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 .starts_with(".") && !flags.show_dot_files
[INFO] [stderr]    |                              ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:90:30
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 .starts_with(".") && !flags.show_dot_files
[INFO] [stderr]    |                              ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "a95a3d6bba1f939d025ceac86aad701f16435a8fe2b376f4531f5990dfed08b2"`
[INFO] running `"docker" "rm" "-f" "a95a3d6bba1f939d025ceac86aad701f16435a8fe2b376f4531f5990dfed08b2"`
[INFO] [stdout] a95a3d6bba1f939d025ceac86aad701f16435a8fe2b376f4531f5990dfed08b2