[INFO] crate mcmf 2.0.0 is already in cache
[INFO] extracting crate mcmf 2.0.0 into work/ex/clippy-test-run/sources/stable/reg/mcmf/2.0.0
[INFO] extracting crate mcmf 2.0.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mcmf/2.0.0
[INFO] validating manifest of mcmf-2.0.0 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 mcmf-2.0.0 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 mcmf-2.0.0
[INFO] finished frobbing mcmf-2.0.0
[INFO] frobbed toml for mcmf-2.0.0 written to work/ex/clippy-test-run/sources/stable/reg/mcmf/2.0.0/Cargo.toml
[INFO] started frobbing mcmf-2.0.0
[INFO] finished frobbing mcmf-2.0.0
[INFO] frobbed toml for mcmf-2.0.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mcmf/2.0.0/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 mcmf-2.0.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/mcmf/2.0.0:/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] 918fc4d3f93789dad23d180564ab1039d33f412a6fb49ff18c10f336108e46de
[INFO] running `"docker" "start" "-a" "918fc4d3f93789dad23d180564ab1039d33f412a6fb49ff18c10f336108e46de"`
[INFO] [stderr]    Compiling mcmf v2.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'gcc::Build': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]  --> build.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut config = gcc::Build::new();
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'gcc::Build::new': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]  --> build.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut config = gcc::Build::new();
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     x
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |     let x = std::cmp::max(x, -limit);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:97:20
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let cost = cost.0 as i64;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: try: `i64::from(cost.0)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:98:24
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let capacity = capacity.0 as i64;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^ help: try: `i64::from(capacity.0)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:138:17
[INFO] [stderr]     |
[INFO] [stderr] 138 |     let limit = std::i32::MAX as i64;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: try: `i64::from(std::i32::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `as_*` usually take self by reference or self by mutable reference; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/lib.rs:153:22
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn as_option(self) -> Option<T> {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: item `Path<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/lib.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | / impl<T> Path<T> where T: Clone + Ord {
[INFO] [stderr] 183 | |     /// A list of all the vertices in the path.
[INFO] [stderr] 184 | |     /// Always begins with `Vertex::Source` and ends with `Vertex::Sink`.
[INFO] [stderr] 185 | |     pub fn vertices(&self) -> Vec<&Vertex<T>> {
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | |     }
[INFO] [stderr] 213 | | }
[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: you should consider deriving a `Default` implementation for `GraphBuilder<T>`
[INFO] [stderr]    --> src/lib.rs:250:5
[INFO] [stderr]     |
[INFO] [stderr] 250 | /     pub fn new() -> Self {
[INFO] [stderr] 251 | |         GraphBuilder {edge_list: Vec::new()}
[INFO] [stderr] 252 | |     }
[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] 244 | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `BTreeMap`
[INFO] [stderr]    --> src/lib.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 | /             if !index_mapper.contains_key(&vertex) {
[INFO] [stderr] 288 | |                 index_mapper.insert(vertex, next_id);
[INFO] [stderr] 289 | |                 next_id += 1;
[INFO] [stderr] 290 | |             }
[INFO] [stderr]     | |_____________^ help: consider using: `index_mapper.entry(vertex)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:295:32
[INFO] [stderr]     |
[INFO] [stderr] 295 |             let node_a = Node(*index_mapper.get(&a).unwrap());
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&a]`
[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: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:296:32
[INFO] [stderr]     |
[INFO] [stderr] 296 |             let node_b = Node(*index_mapper.get(&b).unwrap());
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&b]`
[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] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:301:41
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 g.increase_supply(Node(*index_mapper.get(&Vertex::Source).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&Vertex::Source]`
[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] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:301:86
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 g.increase_supply(Node(*index_mapper.get(&Vertex::Source).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                                                                      ^^^^^^^^^^^^ help: try: `i64::from(cap.0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:302:41
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 g.decrease_supply(Node(*index_mapper.get(&Vertex::Sink).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&Vertex::Sink]`
[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] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:302:84
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 g.decrease_supply(Node(*index_mapper.get(&Vertex::Sink).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                                                                    ^^^^^^^^^^^^ help: try: `i64::from(cap.0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:311:24
[INFO] [stderr]     |
[INFO] [stderr] 311 |             let a = (**inverse_mapping.get(&x.a.0).unwrap()).clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&inverse_mapping[&x.a.0]`
[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] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:312:24
[INFO] [stderr]     |
[INFO] [stderr] 312 |             let b = (**inverse_mapping.get(&x.b.0).unwrap()).clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&inverse_mapping[&x.b.0]`
[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] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     x
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |     let x = std::cmp::max(x, -limit);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:412:25
[INFO] [stderr]     |
[INFO] [stderr] 412 |         assert_eq!(max, 1073741824);
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider: `1_073_741_824`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:97:20
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let cost = cost.0 as i64;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: try: `i64::from(cost.0)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:98:24
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let capacity = capacity.0 as i64;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^ help: try: `i64::from(capacity.0)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:138:17
[INFO] [stderr]     |
[INFO] [stderr] 138 |     let limit = std::i32::MAX as i64;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: try: `i64::from(std::i32::MAX)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `as_*` usually take self by reference or self by mutable reference; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/lib.rs:153:22
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn as_option(self) -> Option<T> {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: item `Path<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/lib.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | / impl<T> Path<T> where T: Clone + Ord {
[INFO] [stderr] 183 | |     /// A list of all the vertices in the path.
[INFO] [stderr] 184 | |     /// Always begins with `Vertex::Source` and ends with `Vertex::Sink`.
[INFO] [stderr] 185 | |     pub fn vertices(&self) -> Vec<&Vertex<T>> {
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | |     }
[INFO] [stderr] 213 | | }
[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: you should consider deriving a `Default` implementation for `GraphBuilder<T>`
[INFO] [stderr]    --> src/lib.rs:250:5
[INFO] [stderr]     |
[INFO] [stderr] 250 | /     pub fn new() -> Self {
[INFO] [stderr] 251 | |         GraphBuilder {edge_list: Vec::new()}
[INFO] [stderr] 252 | |     }
[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] 244 | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `BTreeMap`
[INFO] [stderr]    --> src/lib.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 | /             if !index_mapper.contains_key(&vertex) {
[INFO] [stderr] 288 | |                 index_mapper.insert(vertex, next_id);
[INFO] [stderr] 289 | |                 next_id += 1;
[INFO] [stderr] 290 | |             }
[INFO] [stderr]     | |_____________^ help: consider using: `index_mapper.entry(vertex)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:295:32
[INFO] [stderr]     |
[INFO] [stderr] 295 |             let node_a = Node(*index_mapper.get(&a).unwrap());
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&a]`
[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: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:296:32
[INFO] [stderr]     |
[INFO] [stderr] 296 |             let node_b = Node(*index_mapper.get(&b).unwrap());
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&b]`
[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] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:301:41
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 g.increase_supply(Node(*index_mapper.get(&Vertex::Source).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&Vertex::Source]`
[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] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:301:86
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 g.increase_supply(Node(*index_mapper.get(&Vertex::Source).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                                                                      ^^^^^^^^^^^^ help: try: `i64::from(cap.0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:302:41
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 g.decrease_supply(Node(*index_mapper.get(&Vertex::Sink).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&index_mapper[&Vertex::Sink]`
[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] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:302:84
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 g.decrease_supply(Node(*index_mapper.get(&Vertex::Sink).unwrap()), cap.0 as i64);
[INFO] [stderr]     |                                                                                    ^^^^^^^^^^^^ help: try: `i64::from(cap.0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:311:24
[INFO] [stderr]     |
[INFO] [stderr] 311 |             let a = (**inverse_mapping.get(&x.a.0).unwrap()).clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&inverse_mapping[&x.a.0]`
[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] warning: called `.get().unwrap()` on a BTreeMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/lib.rs:312:24
[INFO] [stderr]     |
[INFO] [stderr] 312 |             let b = (**inverse_mapping.get(&x.b.0).unwrap()).clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&inverse_mapping[&x.b.0]`
[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] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:398:32
[INFO] [stderr]     |
[INFO] [stderr] 398 |             assert_eq!(total, (x as i64 * x as i64) as i32);
[INFO] [stderr]     |                                ^^^^^^^^ help: try: `i64::from(x)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:398:43
[INFO] [stderr]     |
[INFO] [stderr] 398 |             assert_eq!(total, (x as i64 * x as i64) as i32);
[INFO] [stderr]     |                                           ^^^^^^^^ help: try: `i64::from(x)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.93s
[INFO] running `"docker" "inspect" "918fc4d3f93789dad23d180564ab1039d33f412a6fb49ff18c10f336108e46de"`
[INFO] running `"docker" "rm" "-f" "918fc4d3f93789dad23d180564ab1039d33f412a6fb49ff18c10f336108e46de"`
[INFO] [stdout] 918fc4d3f93789dad23d180564ab1039d33f412a6fb49ff18c10f336108e46de