[INFO] crate maplit 1.0.1 is already in cache
[INFO] extracting crate maplit 1.0.1 into work/ex/clippy-test-run/sources/stable/reg/maplit/1.0.1
[INFO] extracting crate maplit 1.0.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/maplit/1.0.1
[INFO] validating manifest of maplit-1.0.1 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 maplit-1.0.1 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 maplit-1.0.1
[INFO] finished frobbing maplit-1.0.1
[INFO] frobbed toml for maplit-1.0.1 written to work/ex/clippy-test-run/sources/stable/reg/maplit/1.0.1/Cargo.toml
[INFO] started frobbing maplit-1.0.1
[INFO] finished frobbing maplit-1.0.1
[INFO] frobbed toml for maplit-1.0.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/maplit/1.0.1/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 maplit-1.0.1 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-3/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/maplit/1.0.1:/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] 0ba59e2a368413f7e859a0a36668c27d0064791e0700b0117d28e1831b9fc0a9
[INFO] running `"docker" "start" "-a" "0ba59e2a368413f7e859a0a36668c27d0064791e0700b0117d28e1831b9fc0a9"`
[INFO] [stderr]     Checking maplit v1.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:58:13
[INFO] [stderr]     |
[INFO] [stderr] 58  |             _map
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 266 |     let empty: HashMap<i32, i32> = hashmap!{};
[INFO] [stderr]     |                                    ---------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:54:28
[INFO] [stderr]     |
[INFO] [stderr] 54  |             let mut _map = ::std::collections::HashMap::with_capacity(_cap);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 266 |     let empty: HashMap<i32, i32> = hashmap!{};
[INFO] [stderr]     |                                    ---------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |             _map
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 315 |     let empty: BTreeMap<i32, i32> = btreemap!{};
[INFO] [stderr]     |                                     ----------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:119:28
[INFO] [stderr]     |
[INFO] [stderr] 119 |             let mut _map = ::std::collections::BTreeMap::new();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 315 |     let empty: BTreeMap<i32, i32> = btreemap!{};
[INFO] [stderr]     |                                     ----------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> tests/tests.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 |     hashmap!{{1 + 2} => 1, (1 + 3) => {0 + 2}};
[INFO] [stderr]    |                            ^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> tests/tests.rs:28:23
[INFO] [stderr]    |
[INFO] [stderr] 28 |     hashset!{{1 + 1}, (2 + 1)};
[INFO] [stderr]    |                       ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `2`
[INFO] [stderr]   --> tests/tests.rs:12:40
[INFO] [stderr]    |
[INFO] [stderr] 12 |     hashmap!{{1 + 2} => 1, (1 + 3) => {0 + 2}};
[INFO] [stderr]    |                                        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "0ba59e2a368413f7e859a0a36668c27d0064791e0700b0117d28e1831b9fc0a9"`
[INFO] running `"docker" "rm" "-f" "0ba59e2a368413f7e859a0a36668c27d0064791e0700b0117d28e1831b9fc0a9"`
[INFO] [stdout] 0ba59e2a368413f7e859a0a36668c27d0064791e0700b0117d28e1831b9fc0a9