[INFO] crate ledb-types 0.2.0 is already in cache
[INFO] extracting crate ledb-types 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/ledb-types/0.2.0
[INFO] extracting crate ledb-types 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ledb-types/0.2.0
[INFO] validating manifest of ledb-types-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 ledb-types-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 ledb-types-0.2.0
[INFO] finished frobbing ledb-types-0.2.0
[INFO] frobbed toml for ledb-types-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/ledb-types/0.2.0/Cargo.toml
[INFO] started frobbing ledb-types-0.2.0
[INFO] finished frobbing ledb-types-0.2.0
[INFO] frobbed toml for ledb-types-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ledb-types/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 ledb-types-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-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/ledb-types/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] 77e7b7c1b43974c9f2dbb513aba06d5faae09b697afa3a3230fc439c781642f1
[INFO] running `"docker" "start" "-a" "77e7b7c1b43974c9f2dbb513aba06d5faae09b697afa3a3230fc439c781642f1"`
[INFO] [stderr]     Checking ledb-types v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/document.rs:93:32
[INFO] [stderr]    |
[INFO] [stderr] 93 | impl<T: Document> Document for HashSet<T> {
[INFO] [stderr]    |                                ^^^^^^^^^^
[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] 93 | impl<T: Document, S: ::std::hash::BuildHasher> Document for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/document.rs:103:35
[INFO] [stderr]     |
[INFO] [stderr] 103 | impl<K, T: Document> Document for HashMap<K, T> {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^
[INFO] [stderr]     |
[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] 103 | impl<K, T: Document, S: ::std::hash::BuildHasher> Document for HashMap<K, T, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `index::KeyFields`
[INFO] [stderr]    --> src/index.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 | /     pub fn new() -> Self {
[INFO] [stderr] 162 | |         KeyFields(Vec::new())
[INFO] [stderr] 163 | |     }
[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] 156 | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/index.rs:186:13
[INFO] [stderr]     |
[INFO] [stderr] 186 |         for ref mut field in &mut self.0 {
[INFO] [stderr]     |             ^^^^^^^^^^^^^    ----------- help: try: `let field = &mut &mut self.0;`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/index.rs:490:46
[INFO] [stderr]     |
[INFO] [stderr] 490 | impl<T: DocumentKeyType> DocumentKeyType for HashSet<T> {
[INFO] [stderr]     |                                              ^^^^^^^^^^
[INFO] [stderr]     |
[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] 490 | impl<T: DocumentKeyType, S: ::std::hash::BuildHasher> DocumentKeyType for HashSet<T, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/index.rs:496:49
[INFO] [stderr]     |
[INFO] [stderr] 496 | impl<K, T: DocumentKeyType> DocumentKeyType for HashMap<K, T> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[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] 496 | impl<K, T: DocumentKeyType, S: ::std::hash::BuildHasher> DocumentKeyType for HashMap<K, T, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/document.rs:93:32
[INFO] [stderr]    |
[INFO] [stderr] 93 | impl<T: Document> Document for HashSet<T> {
[INFO] [stderr]    |                                ^^^^^^^^^^
[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] 93 | impl<T: Document, S: ::std::hash::BuildHasher> Document for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/document.rs:103:35
[INFO] [stderr]     |
[INFO] [stderr] 103 | impl<K, T: Document> Document for HashMap<K, T> {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^
[INFO] [stderr]     |
[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] 103 | impl<K, T: Document, S: ::std::hash::BuildHasher> Document for HashMap<K, T, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `index::KeyFields`
[INFO] [stderr]    --> src/index.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 | /     pub fn new() -> Self {
[INFO] [stderr] 162 | |         KeyFields(Vec::new())
[INFO] [stderr] 163 | |     }
[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] 156 | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/index.rs:186:13
[INFO] [stderr]     |
[INFO] [stderr] 186 |         for ref mut field in &mut self.0 {
[INFO] [stderr]     |             ^^^^^^^^^^^^^    ----------- help: try: `let field = &mut &mut self.0;`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/index.rs:490:46
[INFO] [stderr]     |
[INFO] [stderr] 490 | impl<T: DocumentKeyType> DocumentKeyType for HashSet<T> {
[INFO] [stderr]     |                                              ^^^^^^^^^^
[INFO] [stderr]     |
[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] 490 | impl<T: DocumentKeyType, S: ::std::hash::BuildHasher> DocumentKeyType for HashSet<T, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/index.rs:496:49
[INFO] [stderr]     |
[INFO] [stderr] 496 | impl<K, T: DocumentKeyType> DocumentKeyType for HashMap<K, T> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[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] 496 | impl<K, T: DocumentKeyType, S: ::std::hash::BuildHasher> DocumentKeyType for HashMap<K, T, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "77e7b7c1b43974c9f2dbb513aba06d5faae09b697afa3a3230fc439c781642f1"`
[INFO] running `"docker" "rm" "-f" "77e7b7c1b43974c9f2dbb513aba06d5faae09b697afa3a3230fc439c781642f1"`
[INFO] [stdout] 77e7b7c1b43974c9f2dbb513aba06d5faae09b697afa3a3230fc439c781642f1