[INFO] updating cached repository drnielsen/dictionary-word-tree
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/drnielsen/dictionary-word-tree
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/drnielsen/dictionary-word-tree" "work/ex/clippy-test-run/sources/stable/gh/drnielsen/dictionary-word-tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/drnielsen/dictionary-word-tree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/drnielsen/dictionary-word-tree" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/drnielsen/dictionary-word-tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/drnielsen/dictionary-word-tree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1e004d9602dfd44ca3818b7508fbb1e337c6c8fb
[INFO] sha for GitHub repo drnielsen/dictionary-word-tree: 1e004d9602dfd44ca3818b7508fbb1e337c6c8fb
[INFO] validating manifest of drnielsen/dictionary-word-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 drnielsen/dictionary-word-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 drnielsen/dictionary-word-tree
[INFO] finished frobbing drnielsen/dictionary-word-tree
[INFO] frobbed toml for drnielsen/dictionary-word-tree written to work/ex/clippy-test-run/sources/stable/gh/drnielsen/dictionary-word-tree/Cargo.toml
[INFO] started frobbing drnielsen/dictionary-word-tree
[INFO] finished frobbing drnielsen/dictionary-word-tree
[INFO] frobbed toml for drnielsen/dictionary-word-tree written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/drnielsen/dictionary-word-tree/Cargo.toml
[INFO] crate drnielsen/dictionary-word-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 drnielsen/dictionary-word-tree 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-1/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/drnielsen/dictionary-word-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 -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] 072043acbbd745552c30c5788728f44b60696945e4d2ff872502bee2440b423b
[INFO] running `"docker" "start" "-a" "072043acbbd745552c30c5788728f44b60696945e4d2ff872502bee2440b423b"`
[INFO] [stderr]     Checking dictionary-word-tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:13:20
[INFO] [stderr]    |
[INFO] [stderr] 13 |     println!("{}", "Opening file");
[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:13:20
[INFO] [stderr]    |
[INFO] [stderr] 13 |     println!("{}", "Opening file");
[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: unneeded return statement
[INFO] [stderr]   --> src/word_lineage.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         return self.lineage.len().cmp(&other.lineage.len())
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.lineage.len().cmp(&other.lineage.len())`
[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/word_lineage.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |             return false
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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/word_lineage.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             return true
[INFO] [stderr]    |             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:22:61
[INFO] [stderr]    |
[INFO] [stderr] 22 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:24:61
[INFO] [stderr]    |
[INFO] [stderr] 24 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:26:61
[INFO] [stderr]    |
[INFO] [stderr] 26 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:28:61
[INFO] [stderr]    |
[INFO] [stderr] 28 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:30:61
[INFO] [stderr]    |
[INFO] [stderr] 30 |                                                             return false
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/word_lineage.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     pub fn new() -> WordLineageBuilder {
[INFO] [stderr] 13 | |         WordLineageBuilder{ word_lineage: Lineage { lineage: Vec::new() } }
[INFO] [stderr] 14 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_ret_no_self)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/word_lineage.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         return self.lineage.len().cmp(&other.lineage.len())
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.lineage.len().cmp(&other.lineage.len())`
[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/word_lineage.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |             return false
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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/word_lineage.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             return true
[INFO] [stderr]    |             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:22:61
[INFO] [stderr]    |
[INFO] [stderr] 22 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:24:61
[INFO] [stderr]    |
[INFO] [stderr] 24 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:26:61
[INFO] [stderr]    |
[INFO] [stderr] 26 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:28:61
[INFO] [stderr]    |
[INFO] [stderr] 28 |                                                             return true
[INFO] [stderr]    |                                                             ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:30:61
[INFO] [stderr]    |
[INFO] [stderr] 30 |                                                             return false
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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] error: this `if` has identical blocks
[INFO] [stderr]   --> src/main.rs:23:76
[INFO] [stderr]    |
[INFO] [stderr] 23 |                                                           } else if x == "a" {
[INFO] [stderr]    |  ____________________________________________________________________________^
[INFO] [stderr] 24 | |                                                             return true
[INFO] [stderr] 25 | |                                                         } else if x == "o" {
[INFO] [stderr]    | |_________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::if_same_then_else)] on by default
[INFO] [stderr] note: same as this
[INFO] [stderr]   --> src/main.rs:21:72
[INFO] [stderr]    |
[INFO] [stderr] 21 |                                                           if x.len() > 1 {
[INFO] [stderr]    |  ________________________________________________________________________^
[INFO] [stderr] 22 | |                                                             return true
[INFO] [stderr] 23 | |                                                         } else if x == "a" {
[INFO] [stderr]    | |_________________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]   --> src/main.rs:27:64
[INFO] [stderr]    |
[INFO] [stderr] 27 |                                                           } else if x == "i" {
[INFO] [stderr]    |  ________________________________________________________________^
[INFO] [stderr] 28 | |                                                             return true
[INFO] [stderr] 29 | |                                                         } else {
[INFO] [stderr] 30 | |                                                             return false
[INFO] [stderr] 31 | |                                                         }
[INFO] [stderr]    | |_________________________________________________________^ help: you can reduce it to: `return x == "i"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[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:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 | /     match file.write_all("digraph G {\n".as_bytes()) {
[INFO] [stderr] 70 | |         Err(why) => {
[INFO] [stderr] 71 | |                 panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 72 | |                                                 why.description())
[INFO] [stderr] 73 | |             },
[INFO] [stderr] 74 | |             Ok(_) => (),
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____^
[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] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 69 |     if let Err(why) = file.write_all("digraph G {\n".as_bytes()) {
[INFO] [stderr] 70 |     panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 71 |                                     why.description())
[INFO] [stderr] 72 | }
[INFO] [stderr]    |
[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:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 | /         match file.write_all((instruction+"\n").as_bytes()) {
[INFO] [stderr] 79 | |             Err(why) => {
[INFO] [stderr] 80 | |                 panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 81 | |                                                 why.description())
[INFO] [stderr] 82 | |             },
[INFO] [stderr] 83 | |             Ok(_) => (),
[INFO] [stderr] 84 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 78 |         if let Err(why) = file.write_all((instruction+"\n").as_bytes()) {
[INFO] [stderr] 79 |     panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 80 |                                     why.description())
[INFO] [stderr] 81 | }
[INFO] [stderr]    |
[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:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 | /     match file.write_all("}\n".as_bytes()) {
[INFO] [stderr] 88 | |         Err(why) => {
[INFO] [stderr] 89 | |                 panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 90 | |                                                 why.description())
[INFO] [stderr] 91 | |             },
[INFO] [stderr] 92 | |             Ok(_) => (),
[INFO] [stderr] 93 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 87 |     if let Err(why) = file.write_all("}\n".as_bytes()) {
[INFO] [stderr] 88 |     panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 89 |                                     why.description())
[INFO] [stderr] 90 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:96:64
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn build_word_tree(dictionary: &HashSet<String>, lineage_list: &Vec<&String>, iterations: i32) -> Vec<word_lineage::Lineage> {
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^ help: change this to: `&[&String]`
[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `dictionary-word-tree`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: methods called `new` usually return `Self`
[INFO] [stderr]   --> src/word_lineage.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | /     pub fn new() -> WordLineageBuilder {
[INFO] [stderr] 13 | |         WordLineageBuilder{ word_lineage: Lineage { lineage: Vec::new() } }
[INFO] [stderr] 14 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_ret_no_self)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self
[INFO] [stderr] 
[INFO] [stderr] error: this `if` has identical blocks
[INFO] [stderr]   --> src/main.rs:23:76
[INFO] [stderr]    |
[INFO] [stderr] 23 |                                                           } else if x == "a" {
[INFO] [stderr]    |  ____________________________________________________________________________^
[INFO] [stderr] 24 | |                                                             return true
[INFO] [stderr] 25 | |                                                         } else if x == "o" {
[INFO] [stderr]    | |_________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::if_same_then_else)] on by default
[INFO] [stderr] note: same as this
[INFO] [stderr]   --> src/main.rs:21:72
[INFO] [stderr]    |
[INFO] [stderr] 21 |                                                           if x.len() > 1 {
[INFO] [stderr]    |  ________________________________________________________________________^
[INFO] [stderr] 22 | |                                                             return true
[INFO] [stderr] 23 | |                                                         } else if x == "a" {
[INFO] [stderr]    | |_________________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else
[INFO] [stderr] 
[INFO] [stderr] warning: this if-then-else expression returns a bool literal
[INFO] [stderr]   --> src/main.rs:27:64
[INFO] [stderr]    |
[INFO] [stderr] 27 |                                                           } else if x == "i" {
[INFO] [stderr]    |  ________________________________________________________________^
[INFO] [stderr] 28 | |                                                             return true
[INFO] [stderr] 29 | |                                                         } else {
[INFO] [stderr] 30 | |                                                             return false
[INFO] [stderr] 31 | |                                                         }
[INFO] [stderr]    | |_________________________________________________________^ help: you can reduce it to: `return x == "i"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[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:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 | /     match file.write_all("digraph G {\n".as_bytes()) {
[INFO] [stderr] 70 | |         Err(why) => {
[INFO] [stderr] 71 | |                 panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 72 | |                                                 why.description())
[INFO] [stderr] 73 | |             },
[INFO] [stderr] 74 | |             Ok(_) => (),
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____^
[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] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 69 |     if let Err(why) = file.write_all("digraph G {\n".as_bytes()) {
[INFO] [stderr] 70 |     panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 71 |                                     why.description())
[INFO] [stderr] 72 | }
[INFO] [stderr]    |
[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:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 | /         match file.write_all((instruction+"\n").as_bytes()) {
[INFO] [stderr] 79 | |             Err(why) => {
[INFO] [stderr] 80 | |                 panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 81 | |                                                 why.description())
[INFO] [stderr] 82 | |             },
[INFO] [stderr] 83 | |             Ok(_) => (),
[INFO] [stderr] 84 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 78 |         if let Err(why) = file.write_all((instruction+"\n").as_bytes()) {
[INFO] [stderr] 79 |     panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 80 |                                     why.description())
[INFO] [stderr] 81 | }
[INFO] [stderr]    |
[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:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 | /     match file.write_all("}\n".as_bytes()) {
[INFO] [stderr] 88 | |         Err(why) => {
[INFO] [stderr] 89 | |                 panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 90 | |                                                 why.description())
[INFO] [stderr] 91 | |             },
[INFO] [stderr] 92 | |             Ok(_) => (),
[INFO] [stderr] 93 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 87 |     if let Err(why) = file.write_all("}\n".as_bytes()) {
[INFO] [stderr] 88 |     panic!("couldn't write to {}: {}", display,
[INFO] [stderr] 89 |                                     why.description())
[INFO] [stderr] 90 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:96:64
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn build_word_tree(dictionary: &HashSet<String>, lineage_list: &Vec<&String>, iterations: i32) -> Vec<word_lineage::Lineage> {
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^ help: change this to: `&[&String]`
[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `dictionary-word-tree`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "072043acbbd745552c30c5788728f44b60696945e4d2ff872502bee2440b423b"`
[INFO] running `"docker" "rm" "-f" "072043acbbd745552c30c5788728f44b60696945e4d2ff872502bee2440b423b"`
[INFO] [stdout] 072043acbbd745552c30c5788728f44b60696945e4d2ff872502bee2440b423b