[INFO] updating cached repository william42/advent
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/william42/advent
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/william42/advent" "work/ex/clippy-test-run/sources/stable/gh/william42/advent"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/william42/advent'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/william42/advent" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/william42/advent"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/william42/advent'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] afd88192741ee5c2205ca0c2053592907134660c
[INFO] sha for GitHub repo william42/advent: afd88192741ee5c2205ca0c2053592907134660c
[INFO] validating manifest of william42/advent 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 william42/advent 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 william42/advent
[INFO] finished frobbing william42/advent
[INFO] frobbed toml for william42/advent written to work/ex/clippy-test-run/sources/stable/gh/william42/advent/Cargo.toml
[INFO] started frobbing william42/advent
[INFO] finished frobbing william42/advent
[INFO] frobbed toml for william42/advent written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/william42/advent/Cargo.toml
[INFO] crate william42/advent 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 william42/advent 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/william42/advent:/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] cd84c36003d78ad7cd48e8795fa7bd8cef03ba11fa937d00bffeeb7f0b1755d6
[INFO] running `"docker" "start" "-a" "cd84c36003d78ad7cd48e8795fa7bd8cef03ba11fa937d00bffeeb7f0b1755d6"`
[INFO] [stderr]     Checking advent v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `process_frequency`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn process_frequency(line: String) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day1a`
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn day1a() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day1b`
[INFO] [stderr]   --> src/main.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn day1b() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day2a`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn day2a() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day2b`
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn day2b() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CRect`
[INFO] [stderr]   --> src/main.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | struct CRect {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day3line`
[INFO] [stderr]   --> src/main.rs:96:1
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn day3line(line: String) -> CRect {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day3a`
[INFO] [stderr]    --> src/main.rs:119:1
[INFO] [stderr]     |
[INFO] [stderr] 119 | fn day3a() -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day3b`
[INFO] [stderr]    --> src/main.rs:145:1
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn day3b() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `polymer`
[INFO] [stderr]    --> src/main.rs:173:1
[INFO] [stderr]     |
[INFO] [stderr] 173 | / fn polymer<I>(r: &mut I, prev: Option<u8>) -> Option<u32>
[INFO] [stderr] 174 | | where
[INFO] [stderr] 175 | |     I: Iterator<Item = Result<u8, std::io::Error>>,
[INFO] [stderr] 176 | | {
[INFO] [stderr] ...   |
[INFO] [stderr] 192 | |     }
[INFO] [stderr] 193 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day5a`
[INFO] [stderr]    --> src/main.rs:195:1
[INFO] [stderr]     |
[INFO] [stderr] 195 | fn day5a() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `poly_without`
[INFO] [stderr]    --> src/main.rs:206:1
[INFO] [stderr]     |
[INFO] [stderr] 206 | fn poly_without(i: u8) -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day5b`
[INFO] [stderr]    --> src/main.rs:223:1
[INFO] [stderr]     |
[INFO] [stderr] 223 | fn day5b() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day8a`
[INFO] [stderr]    --> src/main.rs:249:1
[INFO] [stderr]     |
[INFO] [stderr] 249 | fn day8a() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:20:25
[INFO] [stderr]    |
[INFO] [stderr] 20 |     if line.starts_with("-") {
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             total = total + freq;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += freq`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let mut it = rest.splitn(2, ",");
[INFO] [stderr]     |                                 ^^^ help: try using a char instead: `','`
[INFO] [stderr]     |
[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: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:107:33
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let mut it = rest.splitn(2, "x");
[INFO] [stderr]     |                                 ^^^ help: try using a char instead: `'x'`
[INFO] [stderr]     |
[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: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:137:16
[INFO] [stderr]     |
[INFO] [stderr] 137 |             if x >= &2 {
[INFO] [stderr]     |                ^^^^^--
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: use the right value directly: `2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
[INFO] [stderr]    --> src/main.rs:262:20
[INFO] [stderr]     |
[INFO] [stderr] 262 |                 if i <= 0 || i > children.len() {
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::absurd_extreme_comparisons)] on by default
[INFO] [stderr]     = help: because 0 is the minimum value for this type, the case where the two sides are not equal never occurs, consider using i == 0 instead
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#absurd_extreme_comparisons
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `advent`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: function is never used: `process_frequency`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn process_frequency(line: String) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day1a`
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn day1a() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day1b`
[INFO] [stderr]   --> src/main.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn day1b() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day2a`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn day2a() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day2b`
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn day2b() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CRect`
[INFO] [stderr]   --> src/main.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | struct CRect {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day3line`
[INFO] [stderr]   --> src/main.rs:96:1
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn day3line(line: String) -> CRect {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day3a`
[INFO] [stderr]    --> src/main.rs:119:1
[INFO] [stderr]     |
[INFO] [stderr] 119 | fn day3a() -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day3b`
[INFO] [stderr]    --> src/main.rs:145:1
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn day3b() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `polymer`
[INFO] [stderr]    --> src/main.rs:173:1
[INFO] [stderr]     |
[INFO] [stderr] 173 | / fn polymer<I>(r: &mut I, prev: Option<u8>) -> Option<u32>
[INFO] [stderr] 174 | | where
[INFO] [stderr] 175 | |     I: Iterator<Item = Result<u8, std::io::Error>>,
[INFO] [stderr] 176 | | {
[INFO] [stderr] ...   |
[INFO] [stderr] 192 | |     }
[INFO] [stderr] 193 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day5a`
[INFO] [stderr]    --> src/main.rs:195:1
[INFO] [stderr]     |
[INFO] [stderr] 195 | fn day5a() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `poly_without`
[INFO] [stderr]    --> src/main.rs:206:1
[INFO] [stderr]     |
[INFO] [stderr] 206 | fn poly_without(i: u8) -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day5b`
[INFO] [stderr]    --> src/main.rs:223:1
[INFO] [stderr]     |
[INFO] [stderr] 223 | fn day5b() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `day8a`
[INFO] [stderr]    --> src/main.rs:249:1
[INFO] [stderr]     |
[INFO] [stderr] 249 | fn day8a() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:20:25
[INFO] [stderr]    |
[INFO] [stderr] 20 |     if line.starts_with("-") {
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             total = total + freq;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += freq`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let mut it = rest.splitn(2, ",");
[INFO] [stderr]     |                                 ^^^ help: try using a char instead: `','`
[INFO] [stderr]     |
[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: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:107:33
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let mut it = rest.splitn(2, "x");
[INFO] [stderr]     |                                 ^^^ help: try using a char instead: `'x'`
[INFO] [stderr]     |
[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: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:137:16
[INFO] [stderr]     |
[INFO] [stderr] 137 |             if x >= &2 {
[INFO] [stderr]     |                ^^^^^--
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: use the right value directly: `2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
[INFO] [stderr]    --> src/main.rs:262:20
[INFO] [stderr]     |
[INFO] [stderr] 262 |                 if i <= 0 || i > children.len() {
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::absurd_extreme_comparisons)] on by default
[INFO] [stderr]     = help: because 0 is the minimum value for this type, the case where the two sides are not equal never occurs, consider using i == 0 instead
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#absurd_extreme_comparisons
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `advent`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cd84c36003d78ad7cd48e8795fa7bd8cef03ba11fa937d00bffeeb7f0b1755d6"`
[INFO] running `"docker" "rm" "-f" "cd84c36003d78ad7cd48e8795fa7bd8cef03ba11fa937d00bffeeb7f0b1755d6"`
[INFO] [stdout] cd84c36003d78ad7cd48e8795fa7bd8cef03ba11fa937d00bffeeb7f0b1755d6