[INFO] updating cached repository phreaknik/dpgen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/phreaknik/dpgen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/phreaknik/dpgen" "work/ex/clippy-test-run/sources/stable/gh/phreaknik/dpgen"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/phreaknik/dpgen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/phreaknik/dpgen" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/phreaknik/dpgen"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/phreaknik/dpgen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 06f75791497ec7d481c63621c5ba334515dd7e27
[INFO] sha for GitHub repo phreaknik/dpgen: 06f75791497ec7d481c63621c5ba334515dd7e27
[INFO] validating manifest of phreaknik/dpgen 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 phreaknik/dpgen 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 phreaknik/dpgen
[INFO] finished frobbing phreaknik/dpgen
[INFO] frobbed toml for phreaknik/dpgen written to work/ex/clippy-test-run/sources/stable/gh/phreaknik/dpgen/Cargo.toml
[INFO] started frobbing phreaknik/dpgen
[INFO] finished frobbing phreaknik/dpgen
[INFO] frobbed toml for phreaknik/dpgen written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/phreaknik/dpgen/Cargo.toml
[INFO] crate phreaknik/dpgen 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 phreaknik/dpgen 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/gh/phreaknik/dpgen:/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] f3e216927b2bf66f7f9b48399bec1d624f4398a57d4640c49bb19152f81aa295
[INFO] running `"docker" "start" "-a" "f3e216927b2bf66f7f9b48399bec1d624f4398a57d4640c49bb19152f81aa295"`
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking rpassword v2.0.0
[INFO] [stderr]     Checking digest v0.7.4
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking dpgen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         return Err("No input detected.".to_string());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("No input detected.".to_string())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         return Ok(s);
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(s)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         return Err("No input detected.".to_string());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("No input detected.".to_string())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         return Ok(s);
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(s)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 |     if s.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 |     if s.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `s.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `"docker" "inspect" "f3e216927b2bf66f7f9b48399bec1d624f4398a57d4640c49bb19152f81aa295"`
[INFO] running `"docker" "rm" "-f" "f3e216927b2bf66f7f9b48399bec1d624f4398a57d4640c49bb19152f81aa295"`
[INFO] [stdout] f3e216927b2bf66f7f9b48399bec1d624f4398a57d4640c49bb19152f81aa295