[INFO] updating cached repository Scryfox/hutch
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Scryfox/hutch
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Scryfox/hutch" "work/ex/clippy-test-run/sources/stable/gh/Scryfox/hutch"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Scryfox/hutch'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Scryfox/hutch" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Scryfox/hutch"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Scryfox/hutch'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d38328fd82c8b330872ff57732ed18b44c1e31b0
[INFO] sha for GitHub repo Scryfox/hutch: d38328fd82c8b330872ff57732ed18b44c1e31b0
[INFO] validating manifest of Scryfox/hutch 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 Scryfox/hutch 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 Scryfox/hutch
[INFO] finished frobbing Scryfox/hutch
[INFO] frobbed toml for Scryfox/hutch written to work/ex/clippy-test-run/sources/stable/gh/Scryfox/hutch/Cargo.toml
[INFO] started frobbing Scryfox/hutch
[INFO] finished frobbing Scryfox/hutch
[INFO] frobbed toml for Scryfox/hutch written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Scryfox/hutch/Cargo.toml
[INFO] crate Scryfox/hutch 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 Scryfox/hutch against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Scryfox/hutch:/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] 145a8dabf1b30fa8192d878b6d7f9a2ff54abeed30f5531dc2e107ccaaca2cc5
[INFO] running `"docker" "start" "-a" "145a8dabf1b30fa8192d878b6d7f9a2ff54abeed30f5531dc2e107ccaaca2cc5"`
[INFO] [stderr]     Checking hutch v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/map.rs:19:39
[INFO] [stderr]    |
[INFO] [stderr] 19 |             Element::Organism(org) => return Element::Organism(org.update(elements)),
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Element::Organism(org.update(elements))`
[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/map.rs:20:38
[INFO] [stderr]    |
[INFO] [stderr] 20 |             Element::Terrain(map) => return Element::Terrain(map.step(elements)),
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Element::Terrain(map.step(elements))`
[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/organism.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             return Self::new(self.get_x() - 1, self.get_y());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x() - 1, self.get_y())`
[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/organism.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             return Self::new(self.get_x(), self.get_y() - 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x(), self.get_y() - 1)`
[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/organism.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |             return Self::new(self.get_x() + 1, self.get_y());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x() + 1, self.get_y())`
[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/organism.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             return Self::new(self.get_x(), self.get_y() + 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x(), self.get_y() + 1)`
[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 import: `organism::Item`
[INFO] [stderr]  --> src/map.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use organism::Item;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other_maps`
[INFO] [stderr]   --> src/map.rs:90:24
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn step(&self, other_maps: &Vec<Element>) -> Self {
[INFO] [stderr]    |                        ^^^^^^^^^^ help: consider using `_other_maps` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `org`
[INFO] [stderr]   --> src/organism.rs:57:40
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 map::Element::Organism(org) => {}
[INFO] [stderr]    |                                        ^^^ help: consider using `_org` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/map.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let mut stepped_items = Vec::new();
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/map.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn step(&self, elements: &Vec<Element>) -> Self {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: change this to: `&[Element]`
[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] warning: the loop variable `i` is only used to index `empty_cells`.
[INFO] [stderr]   --> src/map.rs:62:18
[INFO] [stderr]    |
[INFO] [stderr] 62 |         for i in 0..MAP_HEIGHT {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 62 |         for <item> in empty_cells.iter_mut().take(MAP_HEIGHT) {
[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/map.rs:90:36
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn step(&self, other_maps: &Vec<Element>) -> Self {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: change this to: `&[Element]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/map.rs:129:12
[INFO] [stderr]     |
[INFO] [stderr] 129 |     items: &Vec<T>,
[INFO] [stderr]     |            ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/organism.rs:38:36
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn update(&self, elements: &Vec<map::Element>) -> Self {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^ help: change this to: `&[map::Element]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/map.rs:19:39
[INFO] [stderr]    |
[INFO] [stderr] 19 |             Element::Organism(org) => return Element::Organism(org.update(elements)),
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Element::Organism(org.update(elements))`
[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/map.rs:20:38
[INFO] [stderr]    |
[INFO] [stderr] 20 |             Element::Terrain(map) => return Element::Terrain(map.step(elements)),
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Element::Terrain(map.step(elements))`
[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/organism.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |             return Self::new(self.get_x() - 1, self.get_y());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x() - 1, self.get_y())`
[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/organism.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             return Self::new(self.get_x(), self.get_y() - 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x(), self.get_y() - 1)`
[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/organism.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |             return Self::new(self.get_x() + 1, self.get_y());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x() + 1, self.get_y())`
[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/organism.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             return Self::new(self.get_x(), self.get_y() + 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Self::new(self.get_x(), self.get_y() + 1)`
[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: using `println!("")`
[INFO] [stderr]   --> src/cli.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         println!("");
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/cli.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/cli.rs:67:26
[INFO] [stderr]    |
[INFO] [stderr] 67 |     write!(buffer, "{}", "Hello");
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/cli.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         println!("");
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/cli.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/cli.rs:67:26
[INFO] [stderr]    |
[INFO] [stderr] 67 |     write!(buffer, "{}", "Hello");
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `organism::Item`
[INFO] [stderr]  --> src/map.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use organism::Item;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other_maps`
[INFO] [stderr]   --> src/map.rs:90:24
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn step(&self, other_maps: &Vec<Element>) -> Self {
[INFO] [stderr]    |                        ^^^^^^^^^^ help: consider using `_other_maps` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `org`
[INFO] [stderr]   --> src/organism.rs:57:40
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 map::Element::Organism(org) => {}
[INFO] [stderr]    |                                        ^^^ help: consider using `_org` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/map.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let mut stepped_items = Vec::new();
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/map.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn step(&self, elements: &Vec<Element>) -> Self {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: change this to: `&[Element]`
[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] warning: the loop variable `i` is only used to index `empty_cells`.
[INFO] [stderr]   --> src/map.rs:62:18
[INFO] [stderr]    |
[INFO] [stderr] 62 |         for i in 0..MAP_HEIGHT {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 62 |         for <item> in empty_cells.iter_mut().take(MAP_HEIGHT) {
[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/map.rs:90:36
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn step(&self, other_maps: &Vec<Element>) -> Self {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: change this to: `&[Element]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/map.rs:129:12
[INFO] [stderr]     |
[INFO] [stderr] 129 |     items: &Vec<T>,
[INFO] [stderr]     |            ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/organism.rs:38:36
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn update(&self, elements: &Vec<map::Element>) -> Self {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^ help: change this to: `&[map::Element]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sim`
[INFO] [stderr]   --> src/cli.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn log_sim(sim: &simulation::Simulation, filename: &str) {
[INFO] [stderr]    |                ^^^ help: consider using `_sim` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sim`
[INFO] [stderr]   --> src/cli.rs:62:16
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn log_sim(sim: &simulation::Simulation, filename: &str) {
[INFO] [stderr]    |                ^^^ help: consider using `_sim` 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/cli.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let mut file = File::create(filename).unwrap();
[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: `log_sim`
[INFO] [stderr]   --> src/cli.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn log_sim(sim: &simulation::Simulation, filename: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cli.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let mut file = File::create(filename).unwrap();
[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: `log_sim`
[INFO] [stderr]   --> src/cli.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn log_sim(sim: &simulation::Simulation, filename: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     write!(buffer, "{}", "Hello");
[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/cli.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     write!(buffer, "{}", "Hello");
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `"docker" "inspect" "145a8dabf1b30fa8192d878b6d7f9a2ff54abeed30f5531dc2e107ccaaca2cc5"`
[INFO] running `"docker" "rm" "-f" "145a8dabf1b30fa8192d878b6d7f9a2ff54abeed30f5531dc2e107ccaaca2cc5"`
[INFO] [stdout] 145a8dabf1b30fa8192d878b6d7f9a2ff54abeed30f5531dc2e107ccaaca2cc5