[INFO] updating cached repository AlvinSamuelsson/stack_machine
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AlvinSamuelsson/stack_machine
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AlvinSamuelsson/stack_machine" "work/ex/clippy-test-run/sources/stable/gh/AlvinSamuelsson/stack_machine"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/AlvinSamuelsson/stack_machine'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AlvinSamuelsson/stack_machine" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/AlvinSamuelsson/stack_machine"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/AlvinSamuelsson/stack_machine'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 132bf5c40ea6fe4503262ca4c3b70d50b278b184
[INFO] sha for GitHub repo AlvinSamuelsson/stack_machine: 132bf5c40ea6fe4503262ca4c3b70d50b278b184
[INFO] validating manifest of AlvinSamuelsson/stack_machine 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 AlvinSamuelsson/stack_machine 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 AlvinSamuelsson/stack_machine
[INFO] finished frobbing AlvinSamuelsson/stack_machine
[INFO] frobbed toml for AlvinSamuelsson/stack_machine written to work/ex/clippy-test-run/sources/stable/gh/AlvinSamuelsson/stack_machine/Cargo.toml
[INFO] started frobbing AlvinSamuelsson/stack_machine
[INFO] finished frobbing AlvinSamuelsson/stack_machine
[INFO] frobbed toml for AlvinSamuelsson/stack_machine written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/AlvinSamuelsson/stack_machine/Cargo.toml
[INFO] crate AlvinSamuelsson/stack_machine 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 AlvinSamuelsson/stack_machine 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-1/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/AlvinSamuelsson/stack_machine:/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] 02028e9f22ac8df84f94d7248fef568d297679262dbb0248abe63348dd8aa43e
[INFO] running `"docker" "start" "-a" "02028e9f22ac8df84f94d7248fef568d297679262dbb0248abe63348dd8aa43e"`
[INFO] [stderr]     Checking stack_machine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: item `stack::Stack` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/stack.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | /     impl Stack {
[INFO] [stderr] 6  | |
[INFO] [stderr] 7  | |         pub fn new() -> Stack {
[INFO] [stderr] 8  | |             Stack {
[INFO] [stderr] ...  |
[INFO] [stderr] 36 | |         }
[INFO] [stderr] 37 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `stack::Stack`
[INFO] [stderr]   --> src/stack.rs:7:9
[INFO] [stderr]    |
[INFO] [stderr] 7  | /         pub fn new() -> Stack {
[INFO] [stderr] 8  | |             Stack {
[INFO] [stderr] 9  | |                 _stack: Vec::<i32>::new(),
[INFO] [stderr] 10 | |             }
[INFO] [stderr] 11 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 1  |     #[derive(Default)]
[INFO] [stderr] 2  |     pub struct Stack {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/stack.rs:30:16
[INFO] [stderr]    |
[INFO] [stderr] 30 |             if self._stack.len() == 0 {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self._stack.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: you should consider adding a `Default` implementation for `stack_machine::StackMachine`
[INFO] [stderr]   --> src/stack_machine.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     pub fn new() -> StackMachine {
[INFO] [stderr] 9  | |         StackMachine {
[INFO] [stderr] 10 | |             stack: stack::Stack::new(),
[INFO] [stderr] 11 | |         }
[INFO] [stderr] 12 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 7  | impl Default for stack_machine::StackMachine {
[INFO] [stderr] 8  |     fn default() -> Self {
[INFO] [stderr] 9  |         Self::new()
[INFO] [stderr] 10 |     }
[INFO] [stderr] 11 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: item `stack::Stack` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/stack.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | /     impl Stack {
[INFO] [stderr] 6  | |
[INFO] [stderr] 7  | |         pub fn new() -> Stack {
[INFO] [stderr] 8  | |             Stack {
[INFO] [stderr] ...  |
[INFO] [stderr] 36 | |         }
[INFO] [stderr] 37 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `stack::Stack`
[INFO] [stderr]   --> src/stack.rs:7:9
[INFO] [stderr]    |
[INFO] [stderr] 7  | /         pub fn new() -> Stack {
[INFO] [stderr] 8  | |             Stack {
[INFO] [stderr] 9  | |                 _stack: Vec::<i32>::new(),
[INFO] [stderr] 10 | |             }
[INFO] [stderr] 11 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 1  |     #[derive(Default)]
[INFO] [stderr] 2  |     pub struct Stack {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/stack.rs:30:16
[INFO] [stderr]    |
[INFO] [stderr] 30 |             if self._stack.len() == 0 {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self._stack.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: you should consider adding a `Default` implementation for `stack_machine::StackMachine`
[INFO] [stderr]   --> src/stack_machine.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     pub fn new() -> StackMachine {
[INFO] [stderr] 9  | |         StackMachine {
[INFO] [stderr] 10 | |             stack: stack::Stack::new(),
[INFO] [stderr] 11 | |         }
[INFO] [stderr] 12 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 7  | impl Default for stack_machine::StackMachine {
[INFO] [stderr] 8  |     fn default() -> Self {
[INFO] [stderr] 9  |         Self::new()
[INFO] [stderr] 10 |     }
[INFO] [stderr] 11 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/stack.rs:30:16
[INFO] [stderr]    |
[INFO] [stderr] 30 |             if self._stack.len() == 0 {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self._stack.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: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:14:51
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let split_line:Vec<&str> = l.trim().split(" ").collect::<Vec<&str>>();
[INFO] [stderr]    |                                                   ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/stack.rs:30:16
[INFO] [stderr]    |
[INFO] [stderr] 30 |             if self._stack.len() == 0 {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self._stack.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: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:14:51
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let split_line:Vec<&str> = l.trim().split(" ").collect::<Vec<&str>>();
[INFO] [stderr]    |                                                   ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "02028e9f22ac8df84f94d7248fef568d297679262dbb0248abe63348dd8aa43e"`
[INFO] running `"docker" "rm" "-f" "02028e9f22ac8df84f94d7248fef568d297679262dbb0248abe63348dd8aa43e"`
[INFO] [stdout] 02028e9f22ac8df84f94d7248fef568d297679262dbb0248abe63348dd8aa43e