[INFO] updating cached repository pedro3692/fibonacci_numbers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pedro3692/fibonacci_numbers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pedro3692/fibonacci_numbers" "work/ex/clippy-test-run/sources/stable/gh/pedro3692/fibonacci_numbers"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/pedro3692/fibonacci_numbers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pedro3692/fibonacci_numbers" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pedro3692/fibonacci_numbers"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pedro3692/fibonacci_numbers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ef0036c7886990e7a757fd5950ce903dcb62dfe2
[INFO] sha for GitHub repo pedro3692/fibonacci_numbers: ef0036c7886990e7a757fd5950ce903dcb62dfe2
[INFO] validating manifest of pedro3692/fibonacci_numbers 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 pedro3692/fibonacci_numbers 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 pedro3692/fibonacci_numbers
[INFO] finished frobbing pedro3692/fibonacci_numbers
[INFO] frobbed toml for pedro3692/fibonacci_numbers written to work/ex/clippy-test-run/sources/stable/gh/pedro3692/fibonacci_numbers/Cargo.toml
[INFO] started frobbing pedro3692/fibonacci_numbers
[INFO] finished frobbing pedro3692/fibonacci_numbers
[INFO] frobbed toml for pedro3692/fibonacci_numbers written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pedro3692/fibonacci_numbers/Cargo.toml
[INFO] crate pedro3692/fibonacci_numbers 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 pedro3692/fibonacci_numbers against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/pedro3692/fibonacci_numbers:/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] 3a625869b28e5d1893f49050a0bb546d020aca4861fa420490819df4f0a7e888
[INFO] running `"docker" "start" "-a" "3a625869b28e5d1893f49050a0bb546d020aca4861fa420490819df4f0a7e888"`
[INFO] [stderr]     Checking fibonacci v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     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/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     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/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     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/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/main.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     input
[INFO] [stderr]    |     ^^^^^
[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/main.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |       let input = match input.trim().parse() {
[INFO] [stderr]    |  _________________^
[INFO] [stderr] 48 | |                 Ok(num) => num,
[INFO] [stderr] 49 | |                 Err(_) => 0,
[INFO] [stderr] 50 | |                 };
[INFO] [stderr]    | |_________________^
[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/main.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     input
[INFO] [stderr]    |     ^^^^^
[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/main.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |       let input = match input.trim().parse() {
[INFO] [stderr]    |  _________________^
[INFO] [stderr] 48 | |                 Ok(num) => num,
[INFO] [stderr] 49 | |                 Err(_) => 0,
[INFO] [stderr] 50 | |                 };
[INFO] [stderr]    | |_________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "3a625869b28e5d1893f49050a0bb546d020aca4861fa420490819df4f0a7e888"`
[INFO] running `"docker" "rm" "-f" "3a625869b28e5d1893f49050a0bb546d020aca4861fa420490819df4f0a7e888"`
[INFO] [stdout] 3a625869b28e5d1893f49050a0bb546d020aca4861fa420490819df4f0a7e888