[INFO] crate ena 0.11.0 is already in cache
[INFO] extracting crate ena 0.11.0 into work/ex/clippy-test-run/sources/stable/reg/ena/0.11.0
[INFO] extracting crate ena 0.11.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ena/0.11.0
[INFO] validating manifest of ena-0.11.0 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 ena-0.11.0 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 ena-0.11.0
[INFO] finished frobbing ena-0.11.0
[INFO] frobbed toml for ena-0.11.0 written to work/ex/clippy-test-run/sources/stable/reg/ena/0.11.0/Cargo.toml
[INFO] started frobbing ena-0.11.0
[INFO] finished frobbing ena-0.11.0
[INFO] frobbed toml for ena-0.11.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ena/0.11.0/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 ena-0.11.0 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/ena/0.11.0:/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] e233396067bd51199c09a6a80f33f2db85bf7d6501af765cf19a72a8584a2de8
[INFO] running `"docker" "start" "-a" "e233396067bd51199c09a6a80f33f2db85bf7d6501af765cf19a72a8584a2de8"`
[INFO] [stderr]     Checking ena v0.11.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/snapshot_vec.rs:178:20
[INFO] [stderr]     |
[INFO] [stderr] 178 |         Snapshot { length: length }
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: replace it with: `length`
[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/unify/mod.rs:207:13
[INFO] [stderr]     |
[INFO] [stderr] 207 |             parent: parent, // this is a root
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: replace it with: `parent`
[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/unify/mod.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |             value: value,
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `value`
[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/unify/mod.rs:209:13
[INFO] [stderr]     |
[INFO] [stderr] 209 |             rank: rank,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `rank`
[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/snapshot_vec.rs:178:20
[INFO] [stderr]     |
[INFO] [stderr] 178 |         Snapshot { length: length }
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: replace it with: `length`
[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/unify/mod.rs:207:13
[INFO] [stderr]     |
[INFO] [stderr] 207 |             parent: parent, // this is a root
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: replace it with: `parent`
[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/unify/mod.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |             value: value,
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `value`
[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/unify/mod.rs:209:13
[INFO] [stderr]     |
[INFO] [stderr] 209 |             rank: rank,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `rank`
[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: item `snapshot_vec::SnapshotVec<D>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/snapshot_vec.rs:85:1
[INFO] [stderr]     |
[INFO] [stderr] 85  | / impl<D: SnapshotVecDelegate> SnapshotVec<D> {
[INFO] [stderr] 86  | |     pub fn new() -> Self {
[INFO] [stderr] 87  | |         Self::default()
[INFO] [stderr] 88  | |     }
[INFO] [stderr] ...   |
[INFO] [stderr] 232 | |     }
[INFO] [stderr] 233 | | }
[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: redundant closure found
[INFO] [stderr]    --> src/snapshot_vec.rs:271:63
[INFO] [stderr]     |
[INFO] [stderr] 271 |             self.undo_log.extend((initial_len..final_len).map(|len| NewElem(len)));
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `NewElem`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: trait `UnificationStore` has a `len` method but no (possibly inherited) `is_empty` method
[INFO] [stderr]   --> src/unify/backing_vec.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / pub trait UnificationStore:
[INFO] [stderr] 17 | |     ops::Index<usize, Output = VarValue<Key<Self>>> + Clone + Default
[INFO] [stderr] 18 | | {
[INFO] [stderr] 19 | |     type Key: UnifyKey<Value = Self::Value>;
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |     }
[INFO] [stderr] 46 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[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: item `unify::UnificationTable<S>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/unify/mod.rs:240:1
[INFO] [stderr]     |
[INFO] [stderr] 240 | / impl<S: UnificationStore> UnificationTable<S> {
[INFO] [stderr] 241 | |     pub fn new() -> Self {
[INFO] [stderr] 242 | |         Self::default()
[INFO] [stderr] 243 | |     }
[INFO] [stderr] ...   |
[INFO] [stderr] 409 | |     }
[INFO] [stderr] 410 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[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: passing a unit value to a function
[INFO] [stderr]    --> src/unify/mod.rs:482:12
[INFO] [stderr]     |
[INFO] [stderr] 482 |         Ok(self.unify_roots(root_a, root_b, combined))
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 482 |         Ok(())
[INFO] [stderr]     |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: item `snapshot_vec::SnapshotVec<D>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/snapshot_vec.rs:85:1
[INFO] [stderr]     |
[INFO] [stderr] 85  | / impl<D: SnapshotVecDelegate> SnapshotVec<D> {
[INFO] [stderr] 86  | |     pub fn new() -> Self {
[INFO] [stderr] 87  | |         Self::default()
[INFO] [stderr] 88  | |     }
[INFO] [stderr] ...   |
[INFO] [stderr] 232 | |     }
[INFO] [stderr] 233 | | }
[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: redundant closure found
[INFO] [stderr]    --> src/snapshot_vec.rs:271:63
[INFO] [stderr]     |
[INFO] [stderr] 271 |             self.undo_log.extend((initial_len..final_len).map(|len| NewElem(len)));
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `NewElem`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: trait `UnificationStore` has a `len` method but no (possibly inherited) `is_empty` method
[INFO] [stderr]   --> src/unify/backing_vec.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / pub trait UnificationStore:
[INFO] [stderr] 17 | |     ops::Index<usize, Output = VarValue<Key<Self>>> + Clone + Default
[INFO] [stderr] 18 | | {
[INFO] [stderr] 19 | |     type Key: UnifyKey<Value = Self::Value>;
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |     }
[INFO] [stderr] 46 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[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: item `unify::UnificationTable<S>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/unify/mod.rs:240:1
[INFO] [stderr]     |
[INFO] [stderr] 240 | / impl<S: UnificationStore> UnificationTable<S> {
[INFO] [stderr] 241 | |     pub fn new() -> Self {
[INFO] [stderr] 242 | |         Self::default()
[INFO] [stderr] 243 | |     }
[INFO] [stderr] ...   |
[INFO] [stderr] 409 | |     }
[INFO] [stderr] 410 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[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: passing a unit value to a function
[INFO] [stderr]    --> src/unify/mod.rs:482:12
[INFO] [stderr]     |
[INFO] [stderr] 482 |         Ok(self.unify_roots(root_a, root_b, combined))
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 482 |         Ok(())
[INFO] [stderr]     |            ^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `"docker" "inspect" "e233396067bd51199c09a6a80f33f2db85bf7d6501af765cf19a72a8584a2de8"`
[INFO] running `"docker" "rm" "-f" "e233396067bd51199c09a6a80f33f2db85bf7d6501af765cf19a72a8584a2de8"`
[INFO] [stdout] e233396067bd51199c09a6a80f33f2db85bf7d6501af765cf19a72a8584a2de8