[INFO] updating cached repository brandonpollack23/rust_wc [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/brandonpollack23/rust_wc [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/brandonpollack23/rust_wc" "work/ex/clippy-test-run/sources/stable/gh/brandonpollack23/rust_wc"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/brandonpollack23/rust_wc'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/brandonpollack23/rust_wc" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/brandonpollack23/rust_wc"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/brandonpollack23/rust_wc'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b94d313f8b8987d688f5598d96f55bde61892b80 [INFO] sha for GitHub repo brandonpollack23/rust_wc: b94d313f8b8987d688f5598d96f55bde61892b80 [INFO] validating manifest of brandonpollack23/rust_wc 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 brandonpollack23/rust_wc 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 brandonpollack23/rust_wc [INFO] finished frobbing brandonpollack23/rust_wc [INFO] frobbed toml for brandonpollack23/rust_wc written to work/ex/clippy-test-run/sources/stable/gh/brandonpollack23/rust_wc/Cargo.toml [INFO] started frobbing brandonpollack23/rust_wc [INFO] finished frobbing brandonpollack23/rust_wc [INFO] frobbed toml for brandonpollack23/rust_wc written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/brandonpollack23/rust_wc/Cargo.toml [INFO] crate brandonpollack23/rust_wc 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 brandonpollack23/rust_wc 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-5/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/brandonpollack23/rust_wc:/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] 64ea3c67906ebce29ef12bceaf25168da423dbae24c7235b754098f1f75a6f34 [INFO] running `"docker" "start" "-a" "64ea3c67906ebce29ef12bceaf25168da423dbae24c7235b754098f1f75a6f34"` [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Checking rust_wc v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unneeded unit return type [INFO] [stderr] --> src/main.rs:23:31 [INFO] [stderr] | [INFO] [stderr] 23 | results.for_each(|result| -> () { [INFO] [stderr] | ^^^^^ help: remove the `-> ()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unused_unit)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stderr] [INFO] [stderr] warning: unneeded unit return type [INFO] [stderr] --> src/main.rs:23:31 [INFO] [stderr] | [INFO] [stderr] 23 | results.for_each(|result| -> () { [INFO] [stderr] | ^^^^^ help: remove the `-> ()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unused_unit)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:35:13 [INFO] [stderr] | [INFO] [stderr] 35 | write!(&mut output, "{} ", self.lines); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | write!(&mut output, "{} ", self.words); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:41:13 [INFO] [stderr] | [INFO] [stderr] 41 | write!(&mut output, "{} ", self.bytes); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | write!(&mut output, "{} ", self.chars); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:47:13 [INFO] [stderr] | [INFO] [stderr] 47 | write!(&mut output, "{} ", self.max_length); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:35:13 [INFO] [stderr] | [INFO] [stderr] 35 | write!(&mut output, "{} ", self.lines); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:38:13 [INFO] [stderr] | [INFO] [stderr] 38 | write!(&mut output, "{} ", self.words); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:41:13 [INFO] [stderr] | [INFO] [stderr] 41 | write!(&mut output, "{} ", self.bytes); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/word_count.rs:85:22 [INFO] [stderr] | [INFO] [stderr] 85 | fn line_counts(line: &String, counts: &mut Counts) { [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: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | write!(&mut output, "{} ", self.chars); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/word_count.rs:47:13 [INFO] [stderr] | [INFO] [stderr] 47 | write!(&mut output, "{} ", self.max_length); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/word_count.rs:85:22 [INFO] [stderr] | [INFO] [stderr] 85 | fn line_counts(line: &String, counts: &mut Counts) { [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] Finished dev [unoptimized + debuginfo] target(s) in 6.55s [INFO] running `"docker" "inspect" "64ea3c67906ebce29ef12bceaf25168da423dbae24c7235b754098f1f75a6f34"` [INFO] running `"docker" "rm" "-f" "64ea3c67906ebce29ef12bceaf25168da423dbae24c7235b754098f1f75a6f34"` [INFO] [stdout] 64ea3c67906ebce29ef12bceaf25168da423dbae24c7235b754098f1f75a6f34