[INFO] updating cached repository RDDDIB/relations
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RDDDIB/relations
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RDDDIB/relations" "work/ex/clippy-test-run/sources/stable/gh/RDDDIB/relations"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/RDDDIB/relations'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RDDDIB/relations" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RDDDIB/relations"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RDDDIB/relations'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 867854ae80991cf19867d6664e13a42aa228a30d
[INFO] sha for GitHub repo RDDDIB/relations: 867854ae80991cf19867d6664e13a42aa228a30d
[INFO] validating manifest of RDDDIB/relations 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 RDDDIB/relations 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 RDDDIB/relations
[INFO] finished frobbing RDDDIB/relations
[INFO] frobbed toml for RDDDIB/relations written to work/ex/clippy-test-run/sources/stable/gh/RDDDIB/relations/Cargo.toml
[INFO] started frobbing RDDDIB/relations
[INFO] finished frobbing RDDDIB/relations
[INFO] frobbed toml for RDDDIB/relations written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RDDDIB/relations/Cargo.toml
[INFO] crate RDDDIB/relations 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 RDDDIB/relations 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-5/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/RDDDIB/relations:/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] 5f9fe7058986e9d4d2bc788cd114a1737d8d39b9cf2d53e7f440cb037c1e509d
[INFO] running `"docker" "start" "-a" "5f9fe7058986e9d4d2bc788cd114a1737d8d39b9cf2d53e7f440cb037c1e509d"`
[INFO] [stderr]     Checking relations v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         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: this if statement can be collapsed
[INFO] [stderr]    --> src/lib.rs:276:17
[INFO] [stderr]     |
[INFO] [stderr] 276 | /                 if self.has(&(item1.clone(), item2.clone())) {
[INFO] [stderr] 277 | |                     if !test.clone().any(|x| {
[INFO] [stderr] 278 | |                         self.has(&(item1.clone(), x.clone())) &&
[INFO] [stderr] 279 | |                             self.has(&(x.clone(), item2.clone()))
[INFO] [stderr] ...   |
[INFO] [stderr] 282 | |                     }
[INFO] [stderr] 283 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 276 |                 if self.has(&(item1.clone(), item2.clone())) && !test.clone().any(|x| {
[INFO] [stderr] 277 |                         self.has(&(item1.clone(), x.clone())) &&
[INFO] [stderr] 278 |                             self.has(&(x.clone(), item2.clone()))
[INFO] [stderr] 279 |                     }) {
[INFO] [stderr] 280 |     return false;
[INFO] [stderr] 281 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         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: this if statement can be collapsed
[INFO] [stderr]    --> src/lib.rs:276:17
[INFO] [stderr]     |
[INFO] [stderr] 276 | /                 if self.has(&(item1.clone(), item2.clone())) {
[INFO] [stderr] 277 | |                     if !test.clone().any(|x| {
[INFO] [stderr] 278 | |                         self.has(&(item1.clone(), x.clone())) &&
[INFO] [stderr] 279 | |                             self.has(&(x.clone(), item2.clone()))
[INFO] [stderr] ...   |
[INFO] [stderr] 282 | |                     }
[INFO] [stderr] 283 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 276 |                 if self.has(&(item1.clone(), item2.clone())) && !test.clone().any(|x| {
[INFO] [stderr] 277 |                         self.has(&(item1.clone(), x.clone())) &&
[INFO] [stderr] 278 |                             self.has(&(x.clone(), item2.clone()))
[INFO] [stderr] 279 |                     }) {
[INFO] [stderr] 280 |     return false;
[INFO] [stderr] 281 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/lib.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let ref a = *self.items;
[INFO] [stderr]    |         ----^^^^^--------------- help: try: `let a = &(*self.items);`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: item `Set<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / impl<T: Ord + Clone> Set<T> {
[INFO] [stderr] 25 | |     /// Creates a new `Set<T>` with a given `Vec` of objects.
[INFO] [stderr] 26 | |     pub fn new(items: &Vec<T>) -> Set<T> {
[INFO] [stderr] 27 | |         Set { items: items.clone() }
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     }
[INFO] [stderr] 44 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[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/lib.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn new(items: &Vec<T>) -> Set<T> {
[INFO] [stderr]    |                       ^^^^^^^
[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] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn new(items: &[T]) -> Set<T> {
[INFO] [stderr]    |                       ^^^^
[INFO] [stderr] help: change `items.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Set { items: items.to_owned() }
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/lib.rs:84:15
[INFO] [stderr]    |
[INFO] [stderr] 84 |       Set::new(&this.items
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 85 | |         .iter()
[INFO] [stderr] 86 | |         .filter(|x| that.has(&x))
[INFO] [stderr] 87 | |         .map(|x| x.clone())
[INFO] [stderr]    | |___________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]    |
[INFO] [stderr] 84 |     Set::new(&this.items
[INFO] [stderr] 85 |         .iter()
[INFO] [stderr] 86 |         .filter(|x| that.has(&x)).cloned()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:105:15
[INFO] [stderr]     |
[INFO] [stderr] 105 |       Set::new(&this.items
[INFO] [stderr]     |  _______________^
[INFO] [stderr] 106 | |         .iter()
[INFO] [stderr] 107 | |         .filter(|x| !that.has(&x))
[INFO] [stderr] 108 | |         .map(|x| x.clone())
[INFO] [stderr]     | |___________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 105 |     Set::new(&this.items
[INFO] [stderr] 106 |         .iter()
[INFO] [stderr] 107 |         .filter(|x| !that.has(&x)).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/lib.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |         let ref a = *self.links;
[INFO] [stderr]     |         ----^^^^^--------------- help: try: `let a = &(*self.links);`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_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/lib.rs:137:37
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn new(set: &Set<T>, links: &Vec<(T, T)>) -> Relation<T> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn new(set: &Set<T>, links: &[(T, T)]) -> Relation<T> {
[INFO] [stderr]     |                                     ^^^^^^^^^
[INFO] [stderr] help: change `links.clone()` to
[INFO] [stderr]     |
[INFO] [stderr] 140 |             links: links.to_owned(),
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: in an 'if' condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a 'let'
[INFO] [stderr]    --> src/lib.rs:277:46
[INFO] [stderr]     |
[INFO] [stderr] 277 |                       if !test.clone().any(|x| {
[INFO] [stderr]     |  ______________________________________________^
[INFO] [stderr] 278 | |                         self.has(&(item1.clone(), x.clone())) &&
[INFO] [stderr] 279 | |                             self.has(&(x.clone(), item2.clone()))
[INFO] [stderr] 280 | |                     }) {
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::block_in_if_condition_stmt)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#block_in_if_condition_stmt
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:396:6
[INFO] [stderr]     |
[INFO] [stderr] 396 |       &this.links
[INFO] [stderr]     |  ______^
[INFO] [stderr] 397 | |     .iter()
[INFO] [stderr] 398 | |     .filter(|x| that.has(&x))
[INFO] [stderr] 399 | |     .map(|x| x.clone())
[INFO] [stderr]     | |_______________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 396 |     &this.links
[INFO] [stderr] 397 |     .iter()
[INFO] [stderr] 398 |     .filter(|x| that.has(&x)).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:417:6
[INFO] [stderr]     |
[INFO] [stderr] 417 |       &this.links
[INFO] [stderr]     |  ______^
[INFO] [stderr] 418 | |     .iter()
[INFO] [stderr] 419 | |     .filter(|x| !that.has(&x))
[INFO] [stderr] 420 | |     .map(|x| x.clone())
[INFO] [stderr]     | |_______________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 417 |     &this.links
[INFO] [stderr] 418 |     .iter()
[INFO] [stderr] 419 |     .filter(|x| !that.has(&x)).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/lib.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let ref a = *self.items;
[INFO] [stderr]    |         ----^^^^^--------------- help: try: `let a = &(*self.items);`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: item `Set<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / impl<T: Ord + Clone> Set<T> {
[INFO] [stderr] 25 | |     /// Creates a new `Set<T>` with a given `Vec` of objects.
[INFO] [stderr] 26 | |     pub fn new(items: &Vec<T>) -> Set<T> {
[INFO] [stderr] 27 | |         Set { items: items.clone() }
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     }
[INFO] [stderr] 44 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[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/lib.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn new(items: &Vec<T>) -> Set<T> {
[INFO] [stderr]    |                       ^^^^^^^
[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] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn new(items: &[T]) -> Set<T> {
[INFO] [stderr]    |                       ^^^^
[INFO] [stderr] help: change `items.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Set { items: items.to_owned() }
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/lib.rs:84:15
[INFO] [stderr]    |
[INFO] [stderr] 84 |       Set::new(&this.items
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 85 | |         .iter()
[INFO] [stderr] 86 | |         .filter(|x| that.has(&x))
[INFO] [stderr] 87 | |         .map(|x| x.clone())
[INFO] [stderr]    | |___________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]    |
[INFO] [stderr] 84 |     Set::new(&this.items
[INFO] [stderr] 85 |         .iter()
[INFO] [stderr] 86 |         .filter(|x| that.has(&x)).cloned()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:105:15
[INFO] [stderr]     |
[INFO] [stderr] 105 |       Set::new(&this.items
[INFO] [stderr]     |  _______________^
[INFO] [stderr] 106 | |         .iter()
[INFO] [stderr] 107 | |         .filter(|x| !that.has(&x))
[INFO] [stderr] 108 | |         .map(|x| x.clone())
[INFO] [stderr]     | |___________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 105 |     Set::new(&this.items
[INFO] [stderr] 106 |         .iter()
[INFO] [stderr] 107 |         .filter(|x| !that.has(&x)).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/lib.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |         let ref a = *self.links;
[INFO] [stderr]     |         ----^^^^^--------------- help: try: `let a = &(*self.links);`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_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/lib.rs:137:37
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn new(set: &Set<T>, links: &Vec<(T, T)>) -> Relation<T> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn new(set: &Set<T>, links: &[(T, T)]) -> Relation<T> {
[INFO] [stderr]     |                                     ^^^^^^^^^
[INFO] [stderr] help: change `links.clone()` to
[INFO] [stderr]     |
[INFO] [stderr] 140 |             links: links.to_owned(),
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: in an 'if' condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a 'let'
[INFO] [stderr]    --> src/lib.rs:277:46
[INFO] [stderr]     |
[INFO] [stderr] 277 |                       if !test.clone().any(|x| {
[INFO] [stderr]     |  ______________________________________________^
[INFO] [stderr] 278 | |                         self.has(&(item1.clone(), x.clone())) &&
[INFO] [stderr] 279 | |                             self.has(&(x.clone(), item2.clone()))
[INFO] [stderr] 280 | |                     }) {
[INFO] [stderr]     | |_____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::block_in_if_condition_stmt)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#block_in_if_condition_stmt
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:396:6
[INFO] [stderr]     |
[INFO] [stderr] 396 |       &this.links
[INFO] [stderr]     |  ______^
[INFO] [stderr] 397 | |     .iter()
[INFO] [stderr] 398 | |     .filter(|x| that.has(&x))
[INFO] [stderr] 399 | |     .map(|x| x.clone())
[INFO] [stderr]     | |_______________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 396 |     &this.links
[INFO] [stderr] 397 |     .iter()
[INFO] [stderr] 398 |     .filter(|x| that.has(&x)).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/lib.rs:417:6
[INFO] [stderr]     |
[INFO] [stderr] 417 |       &this.links
[INFO] [stderr]     |  ______^
[INFO] [stderr] 418 | |     .iter()
[INFO] [stderr] 419 | |     .filter(|x| !that.has(&x))
[INFO] [stderr] 420 | |     .map(|x| x.clone())
[INFO] [stderr]     | |_______________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 417 |     &this.links
[INFO] [stderr] 418 |     .iter()
[INFO] [stderr] 419 |     .filter(|x| !that.has(&x)).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "5f9fe7058986e9d4d2bc788cd114a1737d8d39b9cf2d53e7f440cb037c1e509d"`
[INFO] running `"docker" "rm" "-f" "5f9fe7058986e9d4d2bc788cd114a1737d8d39b9cf2d53e7f440cb037c1e509d"`
[INFO] [stdout] 5f9fe7058986e9d4d2bc788cd114a1737d8d39b9cf2d53e7f440cb037c1e509d