[INFO] updating cached repository fb39ca4/iclicker-sniffer-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fb39ca4/iclicker-sniffer-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fb39ca4/iclicker-sniffer-rs" "work/ex/clippy-test-run/sources/stable/gh/fb39ca4/iclicker-sniffer-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/fb39ca4/iclicker-sniffer-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fb39ca4/iclicker-sniffer-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fb39ca4/iclicker-sniffer-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fb39ca4/iclicker-sniffer-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9cdcd1f71e64096bb8b3ba3ba3a31b6e7064bad8
[INFO] sha for GitHub repo fb39ca4/iclicker-sniffer-rs: 9cdcd1f71e64096bb8b3ba3ba3a31b6e7064bad8
[INFO] validating manifest of fb39ca4/iclicker-sniffer-rs 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 fb39ca4/iclicker-sniffer-rs 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 fb39ca4/iclicker-sniffer-rs
[INFO] finished frobbing fb39ca4/iclicker-sniffer-rs
[INFO] frobbed toml for fb39ca4/iclicker-sniffer-rs written to work/ex/clippy-test-run/sources/stable/gh/fb39ca4/iclicker-sniffer-rs/Cargo.toml
[INFO] started frobbing fb39ca4/iclicker-sniffer-rs
[INFO] finished frobbing fb39ca4/iclicker-sniffer-rs
[INFO] frobbed toml for fb39ca4/iclicker-sniffer-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fb39ca4/iclicker-sniffer-rs/Cargo.toml
[INFO] crate fb39ca4/iclicker-sniffer-rs 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 fb39ca4/iclicker-sniffer-rs 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-3/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/fb39ca4/iclicker-sniffer-rs:/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] a3949e97d62b80d9c4d7f945d5ac2a5949573c3f66e6689eb29140d58d9b1447
[INFO] running `"docker" "start" "-a" "a3949e97d62b80d9c4d7f945d5ac2a5949573c3f66e6689eb29140d58d9b1447"`
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]     Checking itertools v0.5.9
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]     Checking clap v2.20.5
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking iclicker-sniffer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/main.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             file: file,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/main.rs:99:17
[INFO] [stderr]    |
[INFO] [stderr] 99 |                 write!(file, "{}\n", freq).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |             file: file,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `file`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:142:21
[INFO] [stderr]     |
[INFO] [stderr] 142 |                     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:156:25
[INFO] [stderr]     |
[INFO] [stderr] 156 |                         write!(file, "{},{}\n", self.sample_count, new_sample).unwrap();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                         write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/main.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             file: file,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/main.rs:99:17
[INFO] [stderr]    |
[INFO] [stderr] 99 |                 write!(file, "{}\n", freq).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |             file: file,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `file`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:142:21
[INFO] [stderr]     |
[INFO] [stderr] 142 |                     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:156:25
[INFO] [stderr]     |
[INFO] [stderr] 156 |                         write!(file, "{},{}\n", self.sample_count, new_sample).unwrap();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/main.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                         write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/main.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |               else {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 58 | |                 if self.count > 0 {
[INFO] [stderr] 59 | |                     self.count -= 1;
[INFO] [stderr] 60 | |                 }
[INFO] [stderr] 61 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 57 |             else if self.count > 0 {
[INFO] [stderr] 58 |     self.count -= 1;
[INFO] [stderr] 59 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/main.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |         ss
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/main.rs:118:18
[INFO] [stderr]     |
[INFO] [stderr] 118 |           let ss = SymbolSync {
[INFO] [stderr]     |  __________________^
[INFO] [stderr] 119 | |             iterator: samples,
[INFO] [stderr] 120 | |             prev_sample: T::default(),
[INFO] [stderr] 121 | |             sample_symbol_ratio: ratio,
[INFO] [stderr] ...   |
[INFO] [stderr] 124 | |             file: file,
[INFO] [stderr] 125 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:186:30
[INFO] [stderr]     |
[INFO] [stderr] 186 |         while (self.window & 0xffffff) != 0x858585 {
[INFO] [stderr]     |                              ^^^^^^^^ help: consider: `0x00ff_ffff`
[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: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:186:43
[INFO] [stderr]     |
[INFO] [stderr] 186 |         while (self.window & 0xffffff) != 0x858585 {
[INFO] [stderr]     |                                           ^^^^^^^^ help: consider: `0x0085_8585`
[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/main.rs:239:9
[INFO] [stderr]     |
[INFO] [stderr] 239 |         return ((self.data >> (63 - i)) & 0x1) as u8;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `((self.data >> (63 - i)) & 0x1) as u8`
[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: unneeded return statement
[INFO] [stderr]    --> src/main.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |         return (self.data << start) >> (64 - len);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.data << start) >> (64 - len)`
[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: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/main.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |               else {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 58 | |                 if self.count > 0 {
[INFO] [stderr] 59 | |                     self.count -= 1;
[INFO] [stderr] 60 | |                 }
[INFO] [stderr] 61 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 57 |             else if self.count > 0 {
[INFO] [stderr] 58 |     self.count -= 1;
[INFO] [stderr] 59 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/main.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |         ss
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/main.rs:118:18
[INFO] [stderr]     |
[INFO] [stderr] 118 |           let ss = SymbolSync {
[INFO] [stderr]     |  __________________^
[INFO] [stderr] 119 | |             iterator: samples,
[INFO] [stderr] 120 | |             prev_sample: T::default(),
[INFO] [stderr] 121 | |             sample_symbol_ratio: ratio,
[INFO] [stderr] ...   |
[INFO] [stderr] 124 | |             file: file,
[INFO] [stderr] 125 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:186:30
[INFO] [stderr]     |
[INFO] [stderr] 186 |         while (self.window & 0xffffff) != 0x858585 {
[INFO] [stderr]     |                              ^^^^^^^^ help: consider: `0x00ff_ffff`
[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: long literal lacking separators
[INFO] [stderr]    --> src/main.rs:186:43
[INFO] [stderr]     |
[INFO] [stderr] 186 |         while (self.window & 0xffffff) != 0x858585 {
[INFO] [stderr]     |                                           ^^^^^^^^ help: consider: `0x0085_8585`
[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/main.rs:239:9
[INFO] [stderr]     |
[INFO] [stderr] 239 |         return ((self.data >> (63 - i)) & 0x1) as u8;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `((self.data >> (63 - i)) & 0x1) as u8`
[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: unneeded return statement
[INFO] [stderr]    --> src/main.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |         return (self.data << start) >> (64 - len);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.data << start) >> (64 - len)`
[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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:97:9
[INFO] [stderr]     |
[INFO] [stderr] 97  | /         match self.file {
[INFO] [stderr] 98  | |             Some(ref mut file) => {
[INFO] [stderr] 99  | |                 write!(file, "{}\n", freq).unwrap();
[INFO] [stderr] 100 | |             },
[INFO] [stderr] 101 | |             None => (),
[INFO] [stderr] 102 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 97  |         if let Some(ref mut file) = self.file {
[INFO] [stderr] 98  |     write!(file, "{}\n", freq).unwrap();
[INFO] [stderr] 99  | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 | /             match self.file {
[INFO] [stderr] 141 | |                 Some(ref mut file) => {
[INFO] [stderr] 142 | |                     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 143 | |                 },
[INFO] [stderr] 144 | |                 None => (),
[INFO] [stderr] 145 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 140 |             if let Some(ref mut file) = self.file {
[INFO] [stderr] 141 |     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 142 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:154:17
[INFO] [stderr]     |
[INFO] [stderr] 154 | /                 match self.file {
[INFO] [stderr] 155 | |                     Some(ref mut file) => {
[INFO] [stderr] 156 | |                         write!(file, "{},{}\n", self.sample_count, new_sample).unwrap();
[INFO] [stderr] 157 | |                         write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 158 | |                     },
[INFO] [stderr] 159 | |                     None => (),
[INFO] [stderr] 160 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 154 |                 if let Some(ref mut file) = self.file {
[INFO] [stderr] 155 |     write!(file, "{},{}\n", self.sample_count, new_sample).unwrap();
[INFO] [stderr] 156 |     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 157 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |             self.window = self.window << 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.window <<= 1`
[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:281:10
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |          ^^^^^^^^^^^ help: try: `u32::from(d0)`
[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/main.rs:281:32
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |                                ^^^^^^^^^^^ help: try: `u32::from(d1)`
[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:281:54
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^ help: try: `u32::from(d2)`
[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:281:74
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^ help: try: `u32::from(d3)`
[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: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:294:29
[INFO] [stderr]     |
[INFO] [stderr] 294 |     if frequency > 0 { Some(frequency as f64 * 1e6) }
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^ help: try: `f64::from(frequency)`
[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: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:317:21
[INFO] [stderr]     |
[INFO] [stderr] 317 |                 Err(format!("Gain must be nonnegative."))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Gain must be nonnegative.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:320:23
[INFO] [stderr]     |
[INFO] [stderr] 320 |         Err(e) => Err(format!("Gain must be a number."))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Gain must be a number.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:331:21
[INFO] [stderr]     |
[INFO] [stderr] 331 |                 Err(format!("Sample rate must be positive."))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Sample rate must be positive.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:334:23
[INFO] [stderr]     |
[INFO] [stderr] 334 |         Err(e) => Err(format!("Sample rate must be a number."))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Sample rate must be a number.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:343:23
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Err(e) => Err(format!("Device index must be a positive integer"))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Device index must be a positive integer".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:428:19
[INFO] [stderr]     |
[INFO] [stderr] 428 |         .map(|x| (x.unwrap() as f32 - 127.5) / 127.5)
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^ help: try: `f32::from(x.unwrap())`
[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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:97:9
[INFO] [stderr]     |
[INFO] [stderr] 97  | /         match self.file {
[INFO] [stderr] 98  | |             Some(ref mut file) => {
[INFO] [stderr] 99  | |                 write!(file, "{}\n", freq).unwrap();
[INFO] [stderr] 100 | |             },
[INFO] [stderr] 101 | |             None => (),
[INFO] [stderr] 102 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 97  |         if let Some(ref mut file) = self.file {
[INFO] [stderr] 98  |     write!(file, "{}\n", freq).unwrap();
[INFO] [stderr] 99  | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 | /             match self.file {
[INFO] [stderr] 141 | |                 Some(ref mut file) => {
[INFO] [stderr] 142 | |                     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 143 | |                 },
[INFO] [stderr] 144 | |                 None => (),
[INFO] [stderr] 145 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 140 |             if let Some(ref mut file) = self.file {
[INFO] [stderr] 141 |     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 142 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:154:17
[INFO] [stderr]     |
[INFO] [stderr] 154 | /                 match self.file {
[INFO] [stderr] 155 | |                     Some(ref mut file) => {
[INFO] [stderr] 156 | |                         write!(file, "{},{}\n", self.sample_count, new_sample).unwrap();
[INFO] [stderr] 157 | |                         write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 158 | |                     },
[INFO] [stderr] 159 | |                     None => (),
[INFO] [stderr] 160 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 154 |                 if let Some(ref mut file) = self.file {
[INFO] [stderr] 155 |     write!(file, "{},{}\n", self.sample_count, new_sample).unwrap();
[INFO] [stderr] 156 |     write!(file, "{},0\n", self.sample_count).unwrap();
[INFO] [stderr] 157 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |             self.window = self.window << 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.window <<= 1`
[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:281:10
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |          ^^^^^^^^^^^ help: try: `u32::from(d0)`
[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/main.rs:281:32
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |                                ^^^^^^^^^^^ help: try: `u32::from(d1)`
[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:281:54
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^ help: try: `u32::from(d2)`
[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:281:74
[INFO] [stderr]     |
[INFO] [stderr] 281 |         ((d0 as u32) << 24) | ((d1 as u32) << 16) | ((d2 as u32) << 8) | (d3 as u32)
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^ help: try: `u32::from(d3)`
[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: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:294:29
[INFO] [stderr]     |
[INFO] [stderr] 294 |     if frequency > 0 { Some(frequency as f64 * 1e6) }
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^ help: try: `f64::from(frequency)`
[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: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:317:21
[INFO] [stderr]     |
[INFO] [stderr] 317 |                 Err(format!("Gain must be nonnegative."))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Gain must be nonnegative.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:320:23
[INFO] [stderr]     |
[INFO] [stderr] 320 |         Err(e) => Err(format!("Gain must be a number."))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Gain must be a number.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:331:21
[INFO] [stderr]     |
[INFO] [stderr] 331 |                 Err(format!("Sample rate must be positive."))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Sample rate must be positive.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:334:23
[INFO] [stderr]     |
[INFO] [stderr] 334 |         Err(e) => Err(format!("Sample rate must be a number."))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Sample rate must be a number.".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:343:23
[INFO] [stderr]     |
[INFO] [stderr] 343 |         Err(e) => Err(format!("Device index must be a positive integer"))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Device index must be a positive integer".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:428:19
[INFO] [stderr]     |
[INFO] [stderr] 428 |         .map(|x| (x.unwrap() as f32 - 127.5) / 127.5)
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^ help: try: `f32::from(x.unwrap())`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 7.94s
[INFO] running `"docker" "inspect" "a3949e97d62b80d9c4d7f945d5ac2a5949573c3f66e6689eb29140d58d9b1447"`
[INFO] running `"docker" "rm" "-f" "a3949e97d62b80d9c4d7f945d5ac2a5949573c3f66e6689eb29140d58d9b1447"`
[INFO] [stdout] a3949e97d62b80d9c4d7f945d5ac2a5949573c3f66e6689eb29140d58d9b1447