[INFO] updating cached repository stuartnelson3/rust_learning
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/stuartnelson3/rust_learning
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/stuartnelson3/rust_learning" "work/ex/clippy-test-run/sources/stable/gh/stuartnelson3/rust_learning"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/stuartnelson3/rust_learning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/stuartnelson3/rust_learning" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/stuartnelson3/rust_learning"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/stuartnelson3/rust_learning'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2c8a75b515d9efd42da19b3d5a69954f41cf69c
[INFO] sha for GitHub repo stuartnelson3/rust_learning: c2c8a75b515d9efd42da19b3d5a69954f41cf69c
[INFO] validating manifest of stuartnelson3/rust_learning 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 stuartnelson3/rust_learning 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 stuartnelson3/rust_learning
[INFO] finished frobbing stuartnelson3/rust_learning
[INFO] frobbed toml for stuartnelson3/rust_learning written to work/ex/clippy-test-run/sources/stable/gh/stuartnelson3/rust_learning/Cargo.toml
[INFO] started frobbing stuartnelson3/rust_learning
[INFO] finished frobbing stuartnelson3/rust_learning
[INFO] frobbed toml for stuartnelson3/rust_learning written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/stuartnelson3/rust_learning/Cargo.toml
[INFO] crate stuartnelson3/rust_learning 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 stuartnelson3/rust_learning 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/stuartnelson3/rust_learning:/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] 6deba5acf06473217ef8c1359aceb1ba2f975e6f878c6fc5c6ec4dc8be8f9d38
[INFO] running `"docker" "start" "-a" "6deba5acf06473217ef8c1359aceb1ba2f975e6f878c6fc5c6ec4dc8be8f9d38"`
[INFO] [stderr]     Checking libc v0.2.31
[INFO] [stderr]     Checking quick-error v0.2.2
[INFO] [stderr]     Checking protobuf v1.4.1
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking prometheus v0.2.8
[INFO] [stderr]     Checking rust_learning v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     print!("s1: {} s2: {}\n", s1, s2);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     print!("s1: {} s2: {}\n", s1, s2);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: avoid using `collect()` when not needed
[INFO] [stderr]   --> src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 | /         .collect::<Vec<(usize, char)>>()
[INFO] [stderr] 45 | |         .len() as f64
[INFO] [stderr]    | |______________^ help: replace with: `.count()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_collect)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_collect
[INFO] [stderr] 
[INFO] [stderr] warning: avoid using `collect()` when not needed
[INFO] [stderr]   --> src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 | /         .collect::<Vec<(usize, char)>>()
[INFO] [stderr] 45 | |         .len() as f64
[INFO] [stderr]    | |______________^ help: replace with: `.count()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_collect)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_collect
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.08s
[INFO] running `"docker" "inspect" "6deba5acf06473217ef8c1359aceb1ba2f975e6f878c6fc5c6ec4dc8be8f9d38"`
[INFO] running `"docker" "rm" "-f" "6deba5acf06473217ef8c1359aceb1ba2f975e6f878c6fc5c6ec4dc8be8f9d38"`
[INFO] [stdout] 6deba5acf06473217ef8c1359aceb1ba2f975e6f878c6fc5c6ec4dc8be8f9d38