[INFO] crate dependy 0.4.1 is already in cache
[INFO] extracting crate dependy 0.4.1 into work/ex/clippy-test-run/sources/stable/reg/dependy/0.4.1
[INFO] extracting crate dependy 0.4.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/dependy/0.4.1
[INFO] validating manifest of dependy-0.4.1 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 dependy-0.4.1 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 dependy-0.4.1
[INFO] finished frobbing dependy-0.4.1
[INFO] frobbed toml for dependy-0.4.1 written to work/ex/clippy-test-run/sources/stable/reg/dependy/0.4.1/Cargo.toml
[INFO] started frobbing dependy-0.4.1
[INFO] finished frobbing dependy-0.4.1
[INFO] frobbed toml for dependy-0.4.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/dependy/0.4.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 dependy-0.4.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/dependy/0.4.1:/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] 2f07209d8985416639d3175f9ad6e5b744d58d5fb905e69a65d1a041dab43ddb
[INFO] running `"docker" "start" "-a" "2f07209d8985416639d3175f9ad6e5b744d58d5fb905e69a65d1a041dab43ddb"`
[INFO] [stderr]     Checking dependy v0.4.1 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:338:17
[INFO] [stderr]     |
[INFO] [stderr] 338 |                 requirements: requirements,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `requirements`
[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/lib.rs:339:17
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 suggestions: suggestions,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `suggestions`
[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/lib.rs:340:17
[INFO] [stderr]     |
[INFO] [stderr] 340 |                 provides: provides,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: replace it with: `provides`
[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/lib.rs:338:17
[INFO] [stderr]     |
[INFO] [stderr] 338 |                 requirements: requirements,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `requirements`
[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/lib.rs:339:17
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 suggestions: suggestions,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `suggestions`
[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/lib.rs:340:17
[INFO] [stderr]     |
[INFO] [stderr] 340 |                 provides: provides,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: replace it with: `provides`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:549:9
[INFO] [stderr]     |
[INFO] [stderr] 549 |         return None;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 | /         match self {
[INFO] [stderr] 39 | |             &DepEdge::Requires => write!(f, "Requires"),
[INFO] [stderr] 40 | |             &DepEdge::Suggests => write!(f, "Suggests"),
[INFO] [stderr] 41 | |             &DepEdge::Follows => write!(f, "Follows"),
[INFO] [stderr] 42 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 38 |         match *self {
[INFO] [stderr] 39 |             DepEdge::Requires => write!(f, "Requires"),
[INFO] [stderr] 40 |             DepEdge::Suggests => write!(f, "Suggests"),
[INFO] [stderr] 41 |             DepEdge::Follows => write!(f, "Follows"),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Dependy<K>`
[INFO] [stderr]    --> src/lib.rs:96:5
[INFO] [stderr]     |
[INFO] [stderr] 96  | /     pub fn new() -> Dependy<K> {
[INFO] [stderr] 97  | |         Dependy {
[INFO] [stderr] 98  | |             graph: Dag::new(),
[INFO] [stderr] 99  | |             node_bucket: HashMap::new(),
[INFO] [stderr] ...   |
[INFO] [stderr] 105 | |         }
[INFO] [stderr] 106 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 75  | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:111:47
[INFO] [stderr]     |
[INFO] [stderr] 111 |         self.node_bucket.insert(name.clone(), new_node.clone());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `new_node`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:124:52
[INFO] [stderr]     |
[INFO] [stderr] 124 |             self.node_bucket.insert(alias.clone(), new_node.clone());
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `new_node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[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:133:53
[INFO] [stderr]     |
[INFO] [stderr] 133 |                                       dependencies: &Vec<K>)
[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] 133 |                                       dependencies: &[K])
[INFO] [stderr]     |                                                     ^^^^
[INFO] [stderr] help: change `dependencies.clone()` to
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let mut to_resolve = dependencies.to_owned();
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/lib.rs:168:32
[INFO] [stderr]     |
[INFO] [stderr] 168 |                         if let Err(_) = self.graph
[INFO] [stderr]     |                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 168 |                         if self.graph
[INFO] [stderr] 169 |                             .add_edge(*target, self.node_bucket[&dep_name], DepEdge::Requires).is_err()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/lib.rs:192:32
[INFO] [stderr]     |
[INFO] [stderr] 192 |                         if let Err(_) = self.graph
[INFO] [stderr]     |                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 192 |                         if self.graph
[INFO] [stderr] 193 |                             .add_edge(*target, self.node_bucket[&dep_name], DepEdge::Suggests).is_err()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:232:29
[INFO] [stderr]     |
[INFO] [stderr] 232 |             let some_node = self.node_bucket.get(dep_name).unwrap().clone();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.node_bucket.get(dep_name).unwrap()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:232:29
[INFO] [stderr]     |
[INFO] [stderr] 232 |             let some_node = self.node_bucket.get(dep_name).unwrap().clone();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.node_bucket[dep_name]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:254:25
[INFO] [stderr]     |
[INFO] [stderr] 254 |                   node: &NodeIndex,
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider passing by value instead: `NodeIndex`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 | /         match self {
[INFO] [stderr] 39 | |             &DepEdge::Requires => write!(f, "Requires"),
[INFO] [stderr] 40 | |             &DepEdge::Suggests => write!(f, "Suggests"),
[INFO] [stderr] 41 | |             &DepEdge::Follows => write!(f, "Follows"),
[INFO] [stderr] 42 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 38 |         match *self {
[INFO] [stderr] 39 |             DepEdge::Requires => write!(f, "Requires"),
[INFO] [stderr] 40 |             DepEdge::Suggests => write!(f, "Suggests"),
[INFO] [stderr] 41 |             DepEdge::Follows => write!(f, "Follows"),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Dependy<K>`
[INFO] [stderr]    --> src/lib.rs:96:5
[INFO] [stderr]     |
[INFO] [stderr] 96  | /     pub fn new() -> Dependy<K> {
[INFO] [stderr] 97  | |         Dependy {
[INFO] [stderr] 98  | |             graph: Dag::new(),
[INFO] [stderr] 99  | |             node_bucket: HashMap::new(),
[INFO] [stderr] ...   |
[INFO] [stderr] 105 | |         }
[INFO] [stderr] 106 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 75  | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:111:47
[INFO] [stderr]     |
[INFO] [stderr] 111 |         self.node_bucket.insert(name.clone(), new_node.clone());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `new_node`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:124:52
[INFO] [stderr]     |
[INFO] [stderr] 124 |             self.node_bucket.insert(alias.clone(), new_node.clone());
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `new_node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[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:133:53
[INFO] [stderr]     |
[INFO] [stderr] 133 |                                       dependencies: &Vec<K>)
[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] 133 |                                       dependencies: &[K])
[INFO] [stderr]     |                                                     ^^^^
[INFO] [stderr] help: change `dependencies.clone()` to
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let mut to_resolve = dependencies.to_owned();
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/lib.rs:168:32
[INFO] [stderr]     |
[INFO] [stderr] 168 |                         if let Err(_) = self.graph
[INFO] [stderr]     |                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 168 |                         if self.graph
[INFO] [stderr] 169 |                             .add_edge(*target, self.node_bucket[&dep_name], DepEdge::Requires).is_err()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stderr]    --> src/lib.rs:192:32
[INFO] [stderr]     |
[INFO] [stderr] 192 |                         if let Err(_) = self.graph
[INFO] [stderr]     |                                ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 192 |                         if self.graph
[INFO] [stderr] 193 |                             .add_edge(*target, self.node_bucket[&dep_name], DepEdge::Suggests).is_err()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:232:29
[INFO] [stderr]     |
[INFO] [stderr] 232 |             let some_node = self.node_bucket.get(dep_name).unwrap().clone();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.node_bucket.get(dep_name).unwrap()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:232:29
[INFO] [stderr]     |
[INFO] [stderr] 232 |             let some_node = self.node_bucket.get(dep_name).unwrap().clone();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.node_bucket[dep_name]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:254:25
[INFO] [stderr]     |
[INFO] [stderr] 254 |                   node: &NodeIndex,
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider passing by value instead: `NodeIndex`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[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:543:25
[INFO] [stderr]     |
[INFO] [stderr] 543 |     fn index_of(vector: &Vec<String>, x: &String) -> Option<usize> {
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: change this to: `&[String]`
[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 `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/lib.rs:543:42
[INFO] [stderr]     |
[INFO] [stderr] 543 |     fn index_of(vector: &Vec<String>, x: &String) -> Option<usize> {
[INFO] [stderr]     |                                          ^^^^^^^ help: change this to: `&str`
[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/lib.rs:553:44
[INFO] [stderr]     |
[INFO] [stderr] 553 |                                 dep_chain: &Vec<String>,
[INFO] [stderr]     |                                            ^^^^^^^^^^^^ help: change this to: `&[String]`
[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 `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/lib.rs:554:42
[INFO] [stderr]     |
[INFO] [stderr] 554 |                                 depname: &String)
[INFO] [stderr]     |                                          ^^^^^^^ help: change this to: `&str`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:557:20
[INFO] [stderr]     |
[INFO] [stderr] 557 |         let item = depgraph.dep_map.get(depname).unwrap();
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&depgraph.dep_map[depname]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "2f07209d8985416639d3175f9ad6e5b744d58d5fb905e69a65d1a041dab43ddb"`
[INFO] running `"docker" "rm" "-f" "2f07209d8985416639d3175f9ad6e5b744d58d5fb905e69a65d1a041dab43ddb"`
[INFO] [stdout] 2f07209d8985416639d3175f9ad6e5b744d58d5fb905e69a65d1a041dab43ddb