[INFO] crate png_encode_mini 0.1.2 is already in cache [INFO] extracting crate png_encode_mini 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/png_encode_mini/0.1.2 [INFO] extracting crate png_encode_mini 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/png_encode_mini/0.1.2 [INFO] validating manifest of png_encode_mini-0.1.2 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 png_encode_mini-0.1.2 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 png_encode_mini-0.1.2 [INFO] finished frobbing png_encode_mini-0.1.2 [INFO] frobbed toml for png_encode_mini-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/png_encode_mini/0.1.2/Cargo.toml [INFO] started frobbing png_encode_mini-0.1.2 [INFO] finished frobbing png_encode_mini-0.1.2 [INFO] frobbed toml for png_encode_mini-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/png_encode_mini/0.1.2/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [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 png_encode_mini-0.1.2 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-6/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/reg/png_encode_mini/0.1.2:/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] 905f4e03718962b436f8f7b532cfc6674df1d97126fd7ef3082a42c2faaf5c1a [INFO] running `"docker" "start" "-a" "905f4e03718962b436f8f7b532cfc6674df1d97126fd7ef3082a42c2faaf5c1a"` [INFO] [stderr] Checking png_encode_mini v0.1.2 (/opt/crater/workdir) [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/lib.rs:10:32 [INFO] [stderr] | [INFO] [stderr] 10 | const CRC32_INITIAL: u32 = 0xedb88320; [INFO] [stderr] | ^^^^^^^^^^ help: consider: `0xedb8_8320` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/lib.rs:29:13 [INFO] [stderr] | [INFO] [stderr] 29 | return c; [INFO] [stderr] | ^^^^^^^^^ help: remove `return` as shown: `c` [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: long literal lacking separators [INFO] [stderr] --> src/lib.rs:16:24 [INFO] [stderr] | [INFO] [stderr] 16 | value: 0xffffffff, [INFO] [stderr] | ^^^^^^^^^^ help: consider: `0xffff_ffff` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/lib.rs:33:26 [INFO] [stderr] | [INFO] [stderr] 33 | self.value = 0xffffffff; [INFO] [stderr] | ^^^^^^^^^^ help: consider: `0xffff_ffff` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/lib.rs:44:26 [INFO] [stderr] | [INFO] [stderr] 44 | self.value ^ 0xffffffff_u32 [INFO] [stderr] | ^^^^^^^^^^^^^^ help: consider: `0xffff_ffff_u32` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/lib.rs:84:13 [INFO] [stderr] | [INFO] [stderr] 84 | return (self.b << 16) | self.a; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.b << 16) | self.a` [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/lib.rs:160:9 [INFO] [stderr] | [INFO] [stderr] 160 | return raw_data; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `raw_data` [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: unnecessary parentheses around method argument [INFO] [stderr] --> src/lib.rs:211:29 [INFO] [stderr] | [INFO] [stderr] 211 | raw_data.extend((&image[(span as usize)..(span + width_byte_4) as usize])); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: Consider removing unnecessary double parentheses [INFO] [stderr] --> src/lib.rs:211:29 [INFO] [stderr] | [INFO] [stderr] 211 | raw_data.extend((&image[(span as usize)..(span + width_byte_4) as usize])); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::double_parens)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/lib.rs:241:5 [INFO] [stderr] | [INFO] [stderr] 241 | return write_rgba_from_u8(file, image_slice, w, h); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `write_rgba_from_u8(file, image_slice, w, h)` [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: long literal lacking separators [INFO] [stderr] --> src/lib.rs:10:32 [INFO] [stderr] | [INFO] [stderr] 10 | const CRC32_INITIAL: u32 = 0xedb88320; [INFO] [stderr] | ^^^^^^^^^^ help: consider: `0xedb8_8320` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/lib.rs:29:13 [INFO] [stderr] | [INFO] [stderr] 29 | return c; [INFO] [stderr] | ^^^^^^^^^ help: remove `return` as shown: `c` [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: long literal lacking separators [INFO] [stderr] --> src/lib.rs:16:24 [INFO] [stderr] | [INFO] [stderr] 16 | value: 0xffffffff, [INFO] [stderr] | ^^^^^^^^^^ help: consider: `0xffff_ffff` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/lib.rs:33:26 [INFO] [stderr] | [INFO] [stderr] 33 | self.value = 0xffffffff; [INFO] [stderr] | ^^^^^^^^^^ help: consider: `0xffff_ffff` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/lib.rs:44:26 [INFO] [stderr] | [INFO] [stderr] 44 | self.value ^ 0xffffffff_u32 [INFO] [stderr] | ^^^^^^^^^^^^^^ help: consider: `0xffff_ffff_u32` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/lib.rs:84:13 [INFO] [stderr] | [INFO] [stderr] 84 | return (self.b << 16) | self.a; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.b << 16) | self.a` [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/lib.rs:160:9 [INFO] [stderr] | [INFO] [stderr] 160 | return raw_data; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `raw_data` [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: unnecessary parentheses around method argument [INFO] [stderr] --> src/lib.rs:211:29 [INFO] [stderr] | [INFO] [stderr] 211 | raw_data.extend((&image[(span as usize)..(span + width_byte_4) as usize])); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: Consider removing unnecessary double parentheses [INFO] [stderr] --> src/lib.rs:211:29 [INFO] [stderr] | [INFO] [stderr] 211 | raw_data.extend((&image[(span as usize)..(span + width_byte_4) as usize])); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::double_parens)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/lib.rs:241:5 [INFO] [stderr] | [INFO] [stderr] 241 | return write_rgba_from_u8(file, image_slice, w, h); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `write_rgba_from_u8(file, image_slice, w, h)` [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: casting u8 to u32 may become silently lossy if types change [INFO] [stderr] --> src/lib.rs:38:56 [INFO] [stderr] | [INFO] [stderr] 38 | self.value = self.table[((self.value ^ (i as u32)) & 0xff) as usize] ^ [INFO] [stderr] | ^^^^^^^^^^ help: try: `u32::from(i)` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change [INFO] [stderr] --> src/lib.rs:78:47 [INFO] [stderr] | [INFO] [stderr] 78 | self.a = (self.a.wrapping_add(i as u32)) % MOD_ADLER; [INFO] [stderr] | ^^^^^^^^ help: try: `u32::from(i)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:125:58 [INFO] [stderr] | [INFO] [stderr] 125 | (n + {if data.len() == n * CHUNK_SIZE && data.len() != 0 { 0 } else { 1 }}) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!data.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: this argument is passed by reference, but would be more efficient if passed by value [INFO] [stderr] --> src/lib.rs:178:18 [INFO] [stderr] | [INFO] [stderr] 178 | png_tag: &[u8; 4], [INFO] [stderr] | ^^^^^^^^ help: consider passing by value instead: `[u8; 4]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:181:9 [INFO] [stderr] | [INFO] [stderr] 181 | file.write(&u32_to_u8_be(data.len() as u32))?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(clippy::unused_io_amount)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:182:9 [INFO] [stderr] | [INFO] [stderr] 182 | file.write(png_tag)?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:183:9 [INFO] [stderr] | [INFO] [stderr] 183 | file.write(data)?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:189:13 [INFO] [stderr] | [INFO] [stderr] 189 | file.write(&u32_to_u8_be(crc.finalize()))?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:194:5 [INFO] [stderr] | [INFO] [stderr] 194 | file.write(b"\x89PNG\r\n\x1a\n")?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: aborting due to 5 previous errors [INFO] [stderr] [INFO] [stderr] error: Could not compile `png_encode_mini`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change [INFO] [stderr] --> src/lib.rs:38:56 [INFO] [stderr] | [INFO] [stderr] 38 | self.value = self.table[((self.value ^ (i as u32)) & 0xff) as usize] ^ [INFO] [stderr] | ^^^^^^^^^^ help: try: `u32::from(i)` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change [INFO] [stderr] --> src/lib.rs:78:47 [INFO] [stderr] | [INFO] [stderr] 78 | self.a = (self.a.wrapping_add(i as u32)) % MOD_ADLER; [INFO] [stderr] | ^^^^^^^^ help: try: `u32::from(i)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:125:58 [INFO] [stderr] | [INFO] [stderr] 125 | (n + {if data.len() == n * CHUNK_SIZE && data.len() != 0 { 0 } else { 1 }}) [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!data.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: this argument is passed by reference, but would be more efficient if passed by value [INFO] [stderr] --> src/lib.rs:178:18 [INFO] [stderr] | [INFO] [stderr] 178 | png_tag: &[u8; 4], [INFO] [stderr] | ^^^^^^^^ help: consider passing by value instead: `[u8; 4]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:181:9 [INFO] [stderr] | [INFO] [stderr] 181 | file.write(&u32_to_u8_be(data.len() as u32))?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(clippy::unused_io_amount)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:182:9 [INFO] [stderr] | [INFO] [stderr] 182 | file.write(png_tag)?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:183:9 [INFO] [stderr] | [INFO] [stderr] 183 | file.write(data)?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:189:13 [INFO] [stderr] | [INFO] [stderr] 189 | file.write(&u32_to_u8_be(crc.finalize()))?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead [INFO] [stderr] --> src/lib.rs:194:5 [INFO] [stderr] | [INFO] [stderr] 194 | file.write(b"\x89PNG\r\n\x1a\n")?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount [INFO] [stderr] [INFO] [stderr] error: aborting due to 5 previous errors [INFO] [stderr] [INFO] [stderr] error: Could not compile `png_encode_mini`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "905f4e03718962b436f8f7b532cfc6674df1d97126fd7ef3082a42c2faaf5c1a"` [INFO] running `"docker" "rm" "-f" "905f4e03718962b436f8f7b532cfc6674df1d97126fd7ef3082a42c2faaf5c1a"` [INFO] [stdout] 905f4e03718962b436f8f7b532cfc6674df1d97126fd7ef3082a42c2faaf5c1a