[INFO] crate groupable 0.2.0 is already in cache
[INFO] extracting crate groupable 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/groupable/0.2.0
[INFO] extracting crate groupable 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/groupable/0.2.0
[INFO] validating manifest of groupable-0.2.0 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 groupable-0.2.0 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 groupable-0.2.0
[INFO] finished frobbing groupable-0.2.0
[INFO] frobbed toml for groupable-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/groupable/0.2.0/Cargo.toml
[INFO] started frobbing groupable-0.2.0
[INFO] finished frobbing groupable-0.2.0
[INFO] frobbed toml for groupable-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/groupable/0.2.0/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 groupable-0.2.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/groupable/0.2.0:/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] 6de23dcadd4bc76e14d3c54889a31a85bf2973ad7e743001f2cdc77950ad22ac
[INFO] running `"docker" "start" "-a" "6de23dcadd4bc76e14d3c54889a31a85bf2973ad7e743001f2cdc77950ad22ac"`
[INFO] [stderr]     Checking groupable v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | / macro_rules! impl_uint_keyed_iter {
[INFO] [stderr] 70 | |     ($name:ident) => (
[INFO] [stderr] 71 | |         impl <V, U: Extend<V> + FromIterator<V>> FromKeyedIterator<usize, V> for $name<U> {
[INFO] [stderr] 72 | |             fn from_keyed_iter<T: Iterator<Item=(usize, V)>>(iter: T) -> $name<U> {
[INFO] [stderr] ...  |
[INFO] [stderr] 78 | |     )
[INFO] [stderr] 79 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | / macro_rules! impl_uint_keyed_iter {
[INFO] [stderr] 70 | |     ($name:ident) => (
[INFO] [stderr] 71 | |         impl <V, U: Extend<V> + FromIterator<V>> FromKeyedIterator<usize, V> for $name<U> {
[INFO] [stderr] 72 | |             fn from_keyed_iter<T: Iterator<Item=(usize, V)>>(iter: T) -> $name<U> {
[INFO] [stderr] ...  |
[INFO] [stderr] 78 | |     )
[INFO] [stderr] 79 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:59:105
[INFO] [stderr]    |
[INFO] [stderr] 59 |         impl <K: $($bounds+)+, V, U: Extend<V> + FromIterator<V>> FromKeyedIterator<K, V> for $name<K, U> {
[INFO] [stderr]    |                                                                                                         ^
[INFO] [stderr] ...
[INFO] [stderr] 81 | impl_keyed_iter!(HashMap: Ord, Hash);
[INFO] [stderr]    | ------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 59 |         impl <K: $($bounds+)+, V, U: Extend<V> + FromIterator<V>, S: ::std::hash::BuildHasher + Default> FromKeyedIterator<K, V> for $name<K, UHashMap<K, U, S> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                       ^^^^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 let mut map = HashMap::default();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 | /             match $map.get_mut(&key) {
[INFO] [stderr] 45 | |                 Some(collection) => {
[INFO] [stderr] 46 | |                     collection.extend(val_iter);
[INFO] [stderr] 47 | |                     continue
[INFO] [stderr] 48 | |                 },
[INFO] [stderr] 49 | |                 None => {} // insert below
[INFO] [stderr] 50 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr] ...
[INFO] [stderr] 81 |   impl_keyed_iter!(HashMap: Ord, Hash);
[INFO] [stderr]    |   ------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 44 |             if let Some(collection) = $map.get_mut(&key) {
[INFO] [stderr] 45 |                 Some(collection) => {
[INFO] [stderr] 46 |                     collection.extend(val_iter);
[INFO] [stderr] 47 |                     continue
[INFO] [stderr] 48 |                 },
[INFO] [stderr] 49 |                 None => {} // insert below
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 | /             match $map.get_mut(&key) {
[INFO] [stderr] 45 | |                 Some(collection) => {
[INFO] [stderr] 46 | |                     collection.extend(val_iter);
[INFO] [stderr] 47 | |                     continue
[INFO] [stderr] 48 | |                 },
[INFO] [stderr] 49 | |                 None => {} // insert below
[INFO] [stderr] 50 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr] ...
[INFO] [stderr] 82 |   impl_keyed_iter!(BTreeMap: Ord);
[INFO] [stderr]    |   -------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 44 |             if let Some(collection) = $map.get_mut(&key) {
[INFO] [stderr] 45 |                 Some(collection) => {
[INFO] [stderr] 46 |                     collection.extend(val_iter);
[INFO] [stderr] 47 |                     continue
[INFO] [stderr] 48 |                 },
[INFO] [stderr] 49 |                 None => {} // insert below
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:59:105
[INFO] [stderr]    |
[INFO] [stderr] 59 |         impl <K: $($bounds+)+, V, U: Extend<V> + FromIterator<V>> FromKeyedIterator<K, V> for $name<K, U> {
[INFO] [stderr]    |                                                                                                         ^
[INFO] [stderr] ...
[INFO] [stderr] 81 | impl_keyed_iter!(HashMap: Ord, Hash);
[INFO] [stderr]    | ------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 59 |         impl <K: $($bounds+)+, V, U: Extend<V> + FromIterator<V>, S: ::std::hash::BuildHasher + Default> FromKeyedIterator<K, V> for $name<K, UHashMap<K, U, S> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                       ^^^^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 let mut map = HashMap::default();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 | /             match $map.get_mut(&key) {
[INFO] [stderr] 45 | |                 Some(collection) => {
[INFO] [stderr] 46 | |                     collection.extend(val_iter);
[INFO] [stderr] 47 | |                     continue
[INFO] [stderr] 48 | |                 },
[INFO] [stderr] 49 | |                 None => {} // insert below
[INFO] [stderr] 50 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr] ...
[INFO] [stderr] 81 |   impl_keyed_iter!(HashMap: Ord, Hash);
[INFO] [stderr]    |   ------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 44 |             if let Some(collection) = $map.get_mut(&key) {
[INFO] [stderr] 45 |                 Some(collection) => {
[INFO] [stderr] 46 |                     collection.extend(val_iter);
[INFO] [stderr] 47 |                     continue
[INFO] [stderr] 48 |                 },
[INFO] [stderr] 49 |                 None => {} // insert below
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 | /             match $map.get_mut(&key) {
[INFO] [stderr] 45 | |                 Some(collection) => {
[INFO] [stderr] 46 | |                     collection.extend(val_iter);
[INFO] [stderr] 47 | |                     continue
[INFO] [stderr] 48 | |                 },
[INFO] [stderr] 49 | |                 None => {} // insert below
[INFO] [stderr] 50 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr] ...
[INFO] [stderr] 82 |   impl_keyed_iter!(BTreeMap: Ord);
[INFO] [stderr]    |   -------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 44 |             if let Some(collection) = $map.get_mut(&key) {
[INFO] [stderr] 45 |                 Some(collection) => {
[INFO] [stderr] 46 |                     collection.extend(val_iter);
[INFO] [stderr] 47 |                     continue
[INFO] [stderr] 48 |                 },
[INFO] [stderr] 49 |                 None => {} // insert below
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `"docker" "inspect" "6de23dcadd4bc76e14d3c54889a31a85bf2973ad7e743001f2cdc77950ad22ac"`
[INFO] running `"docker" "rm" "-f" "6de23dcadd4bc76e14d3c54889a31a85bf2973ad7e743001f2cdc77950ad22ac"`
[INFO] [stdout] 6de23dcadd4bc76e14d3c54889a31a85bf2973ad7e743001f2cdc77950ad22ac