[INFO] crate itc 0.1.2 is already in cache
[INFO] extracting crate itc 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/itc/0.1.2
[INFO] extracting crate itc 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/itc/0.1.2
[INFO] validating manifest of itc-0.1.2 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 itc-0.1.2 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 itc-0.1.2
[INFO] finished frobbing itc-0.1.2
[INFO] frobbed toml for itc-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/itc/0.1.2/Cargo.toml
[INFO] started frobbing itc-0.1.2
[INFO] finished frobbing itc-0.1.2
[INFO] frobbed toml for itc-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/itc/0.1.2/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 itc-0.1.2 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-6/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/reg/itc/0.1.2:/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] b02f2e88337779a3e2d5434f4ce3b94bdf6c63e8188c4d2e36fe124d836f0ec0
[INFO] running `"docker" "start" "-a" "b02f2e88337779a3e2d5434f4ce3b94bdf6c63e8188c4d2e36fe124d836f0ec0"`
[INFO] [stderr]     Checking itc v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |             i: i
[INFO] [stderr]    |             ^^^^ help: replace it with: `i`
[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:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `left`
[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:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |             right: right
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `right`
[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:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |             n: n
[INFO] [stderr]     |             ^^^^ help: replace it with: `n`
[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:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |             n: n,
[INFO] [stderr]     |             ^^^^ help: replace it with: `n`
[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:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             left: left,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `left`
[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:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             right: right
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `right`
[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:175:13
[INFO] [stderr]     |
[INFO] [stderr] 175 |             i: i,
[INFO] [stderr]     |             ^^^^ help: replace it with: `i`
[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:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |             e: e
[INFO] [stderr]     |             ^^^^ help: replace it with: `e`
[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:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |             i: i
[INFO] [stderr]    |             ^^^^ help: replace it with: `i`
[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:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `left`
[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:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |             right: right
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `right`
[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:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |             n: n
[INFO] [stderr]     |             ^^^^ help: replace it with: `n`
[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:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |             n: n,
[INFO] [stderr]     |             ^^^^ help: replace it with: `n`
[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:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             left: left,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `left`
[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:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             right: right
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `right`
[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:175:13
[INFO] [stderr]     |
[INFO] [stderr] 175 |             i: i,
[INFO] [stderr]     |             ^^^^ help: replace it with: `i`
[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:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |             e: e
[INFO] [stderr]     |             ^^^^ help: replace it with: `e`
[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: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/lib.rs:187:16
[INFO] [stderr]     |
[INFO] [stderr] 187 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 188 | |             if let IdTree::Node {left: ref i_left, right: ref i_right} = self.i {
[INFO] [stderr] 189 | |                 if let EventTree::Node {n, left: ref e_left, right: ref e_right} = self.e {
[INFO] [stderr] 190 | |                     if i_left.as_ref() == &IdTree::one() {
[INFO] [stderr] ...   |
[INFO] [stderr] 208 | |             }
[INFO] [stderr] 209 | |         }
[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] 187 |         } else if let IdTree::Node {left: ref i_left, right: ref i_right} = self.i {
[INFO] [stderr] 188 |     if let EventTree::Node {n, left: ref e_left, right: ref e_right} = self.e {
[INFO] [stderr] 189 |         if i_left.as_ref() == &IdTree::one() {
[INFO] [stderr] 190 |             let eprime_right = Stamp::new(i_right.as_ref().clone(), e_right.as_ref().clone()).fill().into_owned();
[INFO] [stderr] 191 |             let new_left = EventTree::leaf(cmp::max(e_left.max(), eprime_right.min()));
[INFO] [stderr] 192 |             Cow::Owned(EventTree::node(n, Box::new(new_left), Box::new(eprime_right)).norm())
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:285:17
[INFO] [stderr]     |
[INFO] [stderr] 285 |                 return self;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `self`
[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:299:17
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 return IdTree::node(Box::new(norm_left), Box::new(norm_right));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `IdTree::node(Box::new(norm_left), Box::new(norm_right))`
[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: All the struct fields are matched to a wildcard pattern, consider using `..`.
[INFO] [stderr]    --> src/lib.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |             IdTree::Leaf {i: _} => {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]     = help: Try with `Leaf { .. }` instead
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:309:17
[INFO] [stderr]     |
[INFO] [stderr] 309 |                 return self;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `self`
[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/lib.rs:329:17
[INFO] [stderr]     |
[INFO] [stderr] 329 |                 return EventTree::node(n + m, Box::new(norm_left.sink(m)), Box::new(norm_right.sink(m)));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `EventTree::node(n + m, Box::new(norm_left.sink(m)), Box::new(norm_right.sink(m)))`
[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: All the struct fields are matched to a wildcard pattern, consider using `..`.
[INFO] [stderr]    --> src/lib.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |             EventTree::Leaf {n: _} => {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Leaf { .. }` instead
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:472:9
[INFO] [stderr]     |
[INFO] [stderr] 472 |         return (s1, s2)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: remove `return` as shown: `(s1, s2)`
[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 `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/lib.rs:187:16
[INFO] [stderr]     |
[INFO] [stderr] 187 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 188 | |             if let IdTree::Node {left: ref i_left, right: ref i_right} = self.i {
[INFO] [stderr] 189 | |                 if let EventTree::Node {n, left: ref e_left, right: ref e_right} = self.e {
[INFO] [stderr] 190 | |                     if i_left.as_ref() == &IdTree::one() {
[INFO] [stderr] ...   |
[INFO] [stderr] 208 | |             }
[INFO] [stderr] 209 | |         }
[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] 187 |         } else if let IdTree::Node {left: ref i_left, right: ref i_right} = self.i {
[INFO] [stderr] 188 |     if let EventTree::Node {n, left: ref e_left, right: ref e_right} = self.e {
[INFO] [stderr] 189 |         if i_left.as_ref() == &IdTree::one() {
[INFO] [stderr] 190 |             let eprime_right = Stamp::new(i_right.as_ref().clone(), e_right.as_ref().clone()).fill().into_owned();
[INFO] [stderr] 191 |             let new_left = EventTree::leaf(cmp::max(e_left.max(), eprime_right.min()));
[INFO] [stderr] 192 |             Cow::Owned(EventTree::node(n, Box::new(new_left), Box::new(eprime_right)).norm())
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:285:17
[INFO] [stderr]     |
[INFO] [stderr] 285 |                 return self;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `self`
[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:299:17
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 return IdTree::node(Box::new(norm_left), Box::new(norm_right));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `IdTree::node(Box::new(norm_left), Box::new(norm_right))`
[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: All the struct fields are matched to a wildcard pattern, consider using `..`.
[INFO] [stderr]    --> src/lib.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |             IdTree::Leaf {i: _} => {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]     = help: Try with `Leaf { .. }` instead
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:309:17
[INFO] [stderr]     |
[INFO] [stderr] 309 |                 return self;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `self`
[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/lib.rs:329:17
[INFO] [stderr]     |
[INFO] [stderr] 329 |                 return EventTree::node(n + m, Box::new(norm_left.sink(m)), Box::new(norm_right.sink(m)));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `EventTree::node(n + m, Box::new(norm_left.sink(m)), Box::new(norm_right.sink(m)))`
[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: All the struct fields are matched to a wildcard pattern, consider using `..`.
[INFO] [stderr]    --> src/lib.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |             EventTree::Leaf {n: _} => {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Leaf { .. }` instead
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:472:9
[INFO] [stderr]     |
[INFO] [stderr] 472 |         return (s1, s2)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: remove `return` as shown: `(s1, s2)`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/ascii_coding.rs:42:19
[INFO] [stderr]    |
[INFO] [stderr] 42 |             match i.peek().map(|c| *c) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `i.peek().cloned()`
[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] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/ascii_coding.rs:71:15
[INFO] [stderr]    |
[INFO] [stderr] 71 |         match i.peek().map(|c| *c) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `i.peek().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/ascii_coding.rs:91:15
[INFO] [stderr]    |
[INFO] [stderr] 91 |         match i.peek().map(|c| *c) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `i.peek().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 | /         match self {
[INFO] [stderr] 115 | |             &EventTree::Leaf { n } => n,
[INFO] [stderr] 116 | |             &EventTree::Node { n, .. } => n
[INFO] [stderr] 117 | |         }
[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] 114 |         match *self {
[INFO] [stderr] 115 |             EventTree::Leaf { n } => n,
[INFO] [stderr] 116 |             EventTree::Node { n, .. } => n
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/lib.rs:180:5
[INFO] [stderr]     |
[INFO] [stderr] 180 | /     pub fn fill<'a>(&'a self) -> Cow<'a, EventTree> {
[INFO] [stderr] 181 | |         if self.i == IdTree::zero() {
[INFO] [stderr] 182 | |             Cow::Borrowed(&self.e)
[INFO] [stderr] 183 | |         } else if self.i == IdTree::one() {
[INFO] [stderr] ...   |
[INFO] [stderr] 209 | |         }
[INFO] [stderr] 210 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/ascii_coding.rs:42:19
[INFO] [stderr]    |
[INFO] [stderr] 42 |             match i.peek().map(|c| *c) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `i.peek().cloned()`
[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] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/ascii_coding.rs:71:15
[INFO] [stderr]    |
[INFO] [stderr] 71 |         match i.peek().map(|c| *c) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `i.peek().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/ascii_coding.rs:91:15
[INFO] [stderr]    |
[INFO] [stderr] 91 |         match i.peek().map(|c| *c) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `i.peek().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/lib.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 | /         match self {
[INFO] [stderr] 115 | |             &EventTree::Leaf { n } => n,
[INFO] [stderr] 116 | |             &EventTree::Node { n, .. } => n
[INFO] [stderr] 117 | |         }
[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] 114 |         match *self {
[INFO] [stderr] 115 |             EventTree::Leaf { n } => n,
[INFO] [stderr] 116 |             EventTree::Node { n, .. } => n
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/lib.rs:180:5
[INFO] [stderr]     |
[INFO] [stderr] 180 | /     pub fn fill<'a>(&'a self) -> Cow<'a, EventTree> {
[INFO] [stderr] 181 | |         if self.i == IdTree::zero() {
[INFO] [stderr] 182 | |             Cow::Borrowed(&self.e)
[INFO] [stderr] 183 | |         } else if self.i == IdTree::one() {
[INFO] [stderr] ...   |
[INFO] [stderr] 209 | |         }
[INFO] [stderr] 210 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "b02f2e88337779a3e2d5434f4ce3b94bdf6c63e8188c4d2e36fe124d836f0ec0"`
[INFO] running `"docker" "rm" "-f" "b02f2e88337779a3e2d5434f4ce3b94bdf6c63e8188c4d2e36fe124d836f0ec0"`
[INFO] [stdout] b02f2e88337779a3e2d5434f4ce3b94bdf6c63e8188c4d2e36fe124d836f0ec0