[INFO] crate hashmap_union 0.2.0 is already in cache
[INFO] extracting crate hashmap_union 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/hashmap_union/0.2.0
[INFO] extracting crate hashmap_union 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hashmap_union/0.2.0
[INFO] validating manifest of hashmap_union-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 hashmap_union-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 hashmap_union-0.2.0
[INFO] finished frobbing hashmap_union-0.2.0
[INFO] frobbed toml for hashmap_union-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/hashmap_union/0.2.0/Cargo.toml
[INFO] started frobbing hashmap_union-0.2.0
[INFO] finished frobbing hashmap_union-0.2.0
[INFO] frobbed toml for hashmap_union-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hashmap_union/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 hashmap_union-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-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/hashmap_union/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] 10aa3a5a88885334ddc3bed209549b21640b371425cb23b364c90f7dd0b47764
[INFO] running `"docker" "start" "-a" "10aa3a5a88885334ddc3bed209549b21640b371425cb23b364c90f7dd0b47764"`
[INFO] [stderr]     Checking hashmap_union v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:10:32
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn union_of<K, V, F>(one: &HashMap<K, V>, two: &HashMap<K, V>, f: F) -> HashMap<K, V>
[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] 10 | pub fn union_of<K, V, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, V, S>, two: &HashMap<K, V>, f: F) -> HashMap<K, V>
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:10:53
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn union_of<K, V, F>(one: &HashMap<K, V>, two: &HashMap<K, V>, f: F) -> HashMap<K, V>
[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] 10 | pub fn union_of<K, V, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, V>, two: &HashMap<K, V, S>, f: F) -> HashMap<K, V>
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/lib.rs:21:71
[INFO] [stderr]    |
[INFO] [stderr] 21 |                     one.get(k).map(|v1: &V| f(v1.clone(), v.clone())).unwrap_or(v.clone())
[INFO] [stderr]    |                                                                       ^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| v.clone())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:33:45
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn intersection_of<K, A, B, C, F>(one: &HashMap<K, A>, two: &HashMap<K, B>, f: F) -> HashMap<K, C>
[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] 33 | pub fn intersection_of<K, A, B, C, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, A, S>, two: &HashMap<K, B>, f: F) -> HashMap<K, C>
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:33:66
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn intersection_of<K, A, B, C, F>(one: &HashMap<K, A>, two: &HashMap<K, B>, f: F) -> HashMap<K, C>
[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] 33 | pub fn intersection_of<K, A, B, C, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, A>, two: &HashMap<K, B, S>, f: F) -> HashMap<K, C>
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:10:32
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn union_of<K, V, F>(one: &HashMap<K, V>, two: &HashMap<K, V>, f: F) -> HashMap<K, V>
[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] 10 | pub fn union_of<K, V, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, V, S>, two: &HashMap<K, V>, f: F) -> HashMap<K, V>
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:10:53
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn union_of<K, V, F>(one: &HashMap<K, V>, two: &HashMap<K, V>, f: F) -> HashMap<K, V>
[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] 10 | pub fn union_of<K, V, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, V>, two: &HashMap<K, V, S>, f: F) -> HashMap<K, V>
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/lib.rs:21:71
[INFO] [stderr]    |
[INFO] [stderr] 21 |                     one.get(k).map(|v1: &V| f(v1.clone(), v.clone())).unwrap_or(v.clone())
[INFO] [stderr]    |                                                                       ^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| v.clone())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:33:45
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn intersection_of<K, A, B, C, F>(one: &HashMap<K, A>, two: &HashMap<K, B>, f: F) -> HashMap<K, C>
[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] 33 | pub fn intersection_of<K, A, B, C, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, A, S>, two: &HashMap<K, B>, f: F) -> HashMap<K, C>
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/lib.rs:33:66
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn intersection_of<K, A, B, C, F>(one: &HashMap<K, A>, two: &HashMap<K, B>, f: F) -> HashMap<K, C>
[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] 33 | pub fn intersection_of<K, A, B, C, F, S: ::std::hash::BuildHasher>(one: &HashMap<K, A>, two: &HashMap<K, B, S>, f: F) -> HashMap<K, C>
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "10aa3a5a88885334ddc3bed209549b21640b371425cb23b364c90f7dd0b47764"`
[INFO] running `"docker" "rm" "-f" "10aa3a5a88885334ddc3bed209549b21640b371425cb23b364c90f7dd0b47764"`
[INFO] [stdout] 10aa3a5a88885334ddc3bed209549b21640b371425cb23b364c90f7dd0b47764