[INFO] updating cached repository osheari1/rustbook
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/osheari1/rustbook
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/osheari1/rustbook" "work/ex/clippy-test-run/sources/stable/gh/osheari1/rustbook"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/osheari1/rustbook'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/osheari1/rustbook" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/osheari1/rustbook"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/osheari1/rustbook'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d5e7c5da7a195de367a83e1683385ee390d079da
[INFO] sha for GitHub repo osheari1/rustbook: d5e7c5da7a195de367a83e1683385ee390d079da
[INFO] validating manifest of osheari1/rustbook 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 osheari1/rustbook 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 osheari1/rustbook
[INFO] finished frobbing osheari1/rustbook
[INFO] frobbed toml for osheari1/rustbook written to work/ex/clippy-test-run/sources/stable/gh/osheari1/rustbook/Cargo.toml
[INFO] started frobbing osheari1/rustbook
[INFO] finished frobbing osheari1/rustbook
[INFO] frobbed toml for osheari1/rustbook written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/osheari1/rustbook/Cargo.toml
[INFO] crate osheari1/rustbook has a lockfile. skipping
[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 osheari1/rustbook 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-7/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/gh/osheari1/rustbook:/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] accbfa4c9a3268224b04fbb0d31e9f1f832c76bfb85c8b3b431b2f8206c63607
[INFO] running `"docker" "start" "-a" "accbfa4c9a3268224b04fbb0d31e9f1f832c76bfb85c8b3b431b2f8206c63607"`
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking rustbook v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/common_programming_concepts/data_types.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/common_programming_concepts/functions.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/ownership/references_borrowing.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/ownership/what_is_ownership.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/common_programming_concepts/data_types.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/common_programming_concepts/functions.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/ownership/references_borrowing.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/ownership/what_is_ownership.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/references_borrowing.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn calculate_length(s: &String) -> usize {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/references_borrowing.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn change_immut(_s: &String) {
[INFO] [stderr]    |                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/slices.rs:49:34
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn first_word_returning_index(s: &String) -> usize {
[INFO] [stderr]    |                                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/slices.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn first_word_pass_string(s: &String) -> &str {
[INFO] [stderr]    |                              ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/references_borrowing.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn calculate_length(s: &String) -> usize {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/references_borrowing.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn change_immut(_s: &String) {
[INFO] [stderr]    |                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/slices.rs:49:34
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn first_word_returning_index(s: &String) -> usize {
[INFO] [stderr]    |                                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/ownership/slices.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn first_word_pass_string(s: &String) -> &str {
[INFO] [stderr]    |                              ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `"docker" "inspect" "accbfa4c9a3268224b04fbb0d31e9f1f832c76bfb85c8b3b431b2f8206c63607"`
[INFO] running `"docker" "rm" "-f" "accbfa4c9a3268224b04fbb0d31e9f1f832c76bfb85c8b3b431b2f8206c63607"`
[INFO] [stdout] accbfa4c9a3268224b04fbb0d31e9f1f832c76bfb85c8b3b431b2f8206c63607