[INFO] updating cached repository mrjones/erasure-codes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mrjones/erasure-codes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mrjones/erasure-codes" "work/ex/clippy-test-run/sources/stable/gh/mrjones/erasure-codes"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/mrjones/erasure-codes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mrjones/erasure-codes" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mrjones/erasure-codes"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mrjones/erasure-codes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dbaecfbcf0bb2d52943b377f9911b3e27cf58f46
[INFO] sha for GitHub repo mrjones/erasure-codes: dbaecfbcf0bb2d52943b377f9911b3e27cf58f46
[INFO] validating manifest of mrjones/erasure-codes 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 mrjones/erasure-codes 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 mrjones/erasure-codes
[INFO] finished frobbing mrjones/erasure-codes
[INFO] frobbed toml for mrjones/erasure-codes written to work/ex/clippy-test-run/sources/stable/gh/mrjones/erasure-codes/Cargo.toml
[INFO] started frobbing mrjones/erasure-codes
[INFO] finished frobbing mrjones/erasure-codes
[INFO] frobbed toml for mrjones/erasure-codes written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/mrjones/erasure-codes/Cargo.toml
[INFO] crate mrjones/erasure-codes 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 mrjones/erasure-codes 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-7/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/mrjones/erasure-codes:/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] 61c4619ea0d9e51700e9a6e688d81d601220a238fced8614f331eba8824a495d
[INFO] running `"docker" "start" "-a" "61c4619ea0d9e51700e9a6e688d81d601220a238fced8614f331eba8824a495d"`
[INFO] [stderr]     Checking num-complex v0.1.35
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking la v0.2.0
[INFO] [stderr]     Checking erasure-codes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:281:25
[INFO] [stderr]     |
[INFO] [stderr] 281 |                     let m = to_matrix(&s_prime);
[INFO] [stderr]     |                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:281:25
[INFO] [stderr]     |
[INFO] [stderr] 281 |                     let m = to_matrix(&s_prime);
[INFO] [stderr]     |                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         return Ok(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     return Ok(code_words);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(code_words)`
[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/main.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     return dot;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `dot`
[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/main.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     return a.iter().zip(b.iter()).map(|(x, y)| x + y).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().zip(b.iter()).map(|(x, y)| x + y).collect()`
[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/main.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     return a.iter().map(|x| x + c).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().map(|x| x + c).collect()`
[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/main.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     return a.iter().zip(b.iter()).map(|(x, y)| x * y).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().zip(b.iter()).map(|(x, y)| x * y).collect()`
[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/main.rs:127:5
[INFO] [stderr]     |
[INFO] [stderr] 127 |     return a.iter().map(|x| x * c).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().map(|x| x * c).collect()`
[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/main.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     return la::Matrix::new(a.len(), a[0].len(), d);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `la::Matrix::new(a.len(), a[0].len(), d)`
[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/main.rs:154:5
[INFO] [stderr]     |
[INFO] [stderr] 154 |     return rank    
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `rank`
[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/main.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     return null_basis;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `null_basis`
[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/main.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     return one_null_basis(&svd);    
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `one_null_basis(&svd)`
[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/main.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     return rank(&svd);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `rank(&svd)`
[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/main.rs:292:5
[INFO] [stderr]     |
[INFO] [stderr] 292 |     return g;
[INFO] [stderr]     |     ^^^^^^^^^ help: remove `return` as shown: `g`
[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/main.rs:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     return gzero;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `gzero`
[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/main.rs:353:5
[INFO] [stderr]     |
[INFO] [stderr] 353 |     return Ok(result);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(result)`
[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/main.rs:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     return di / data_chunks_per_parity;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `di / data_chunks_per_parity`
[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/main.rs:398:5
[INFO] [stderr]     |
[INFO] [stderr] 398 |     return data_have + global_parity_have + locally_recoverable >= needed;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `data_have + global_parity_have + locally_recoverable >= needed`
[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: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         return Ok(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     return Ok(code_words);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(code_words)`
[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/main.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     return dot;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `dot`
[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/main.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     return a.iter().zip(b.iter()).map(|(x, y)| x + y).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().zip(b.iter()).map(|(x, y)| x + y).collect()`
[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/main.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     return a.iter().map(|x| x + c).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().map(|x| x + c).collect()`
[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/main.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     return a.iter().zip(b.iter()).map(|(x, y)| x * y).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().zip(b.iter()).map(|(x, y)| x * y).collect()`
[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/main.rs:127:5
[INFO] [stderr]     |
[INFO] [stderr] 127 |     return a.iter().map(|x| x * c).collect();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `a.iter().map(|x| x * c).collect()`
[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/main.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     return la::Matrix::new(a.len(), a[0].len(), d);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `la::Matrix::new(a.len(), a[0].len(), d)`
[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/main.rs:154:5
[INFO] [stderr]     |
[INFO] [stderr] 154 |     return rank    
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `rank`
[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/main.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     return null_basis;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `null_basis`
[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/main.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     return one_null_basis(&svd);    
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `one_null_basis(&svd)`
[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/main.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     return rank(&svd);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `rank(&svd)`
[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/main.rs:292:5
[INFO] [stderr]     |
[INFO] [stderr] 292 |     return g;
[INFO] [stderr]     |     ^^^^^^^^^ help: remove `return` as shown: `g`
[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/main.rs:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     return gzero;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `gzero`
[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/main.rs:353:5
[INFO] [stderr]     |
[INFO] [stderr] 353 |     return Ok(result);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(result)`
[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/main.rs:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     return di / data_chunks_per_parity;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `di / data_chunks_per_parity`
[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/main.rs:398:5
[INFO] [stderr]     |
[INFO] [stderr] 398 |     return data_have + global_parity_have + locally_recoverable >= needed;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `data_have + global_parity_have + locally_recoverable >= needed`
[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/main.rs:560:18
[INFO] [stderr]     |
[INFO] [stderr] 560 |             vec![0b00000001],
[INFO] [stderr]     |                  ^^^^^^^^^^ help: consider: `0b0000_0001`
[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:561:18
[INFO] [stderr]     |
[INFO] [stderr] 561 |             vec![0b00000010],
[INFO] [stderr]     |                  ^^^^^^^^^^ help: consider: `0b0000_0010`
[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/main.rs:562:18
[INFO] [stderr]     |
[INFO] [stderr] 562 |             vec![0b00000100],
[INFO] [stderr]     |                  ^^^^^^^^^^ help: consider: `0b0000_0100`
[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/main.rs:563:18
[INFO] [stderr]     |
[INFO] [stderr] 563 |             vec![0b00001000],
[INFO] [stderr]     |                  ^^^^^^^^^^ help: consider: `0b0000_1000`
[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/main.rs:564:18
[INFO] [stderr]     |
[INFO] [stderr] 564 |             vec![0b00010000],
[INFO] [stderr]     |                  ^^^^^^^^^^ help: consider: `0b0001_0000`
[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/main.rs:565:18
[INFO] [stderr]     |
[INFO] [stderr] 565 |             vec![0b00100000],
[INFO] [stderr]     |                  ^^^^^^^^^^ help: consider: `0b0010_0000`
[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/main.rs:570:25
[INFO] [stderr]     |
[INFO] [stderr] 570 |         assert_eq!(vec![0b00000111], code_word.local_parities[0]);
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider: `0b0000_0111`
[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/main.rs:571:25
[INFO] [stderr]     |
[INFO] [stderr] 571 |         assert_eq!(vec![0b00111000], code_word.local_parities[1]);
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider: `0b0011_1000`
[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: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider using `_rng` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:331:9
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let k = spec.data_chunks;
[INFO] [stderr]     |         ^ help: consider using `_k` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:332:9
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let n = spec.data_chunks + spec.local_parities + spec.global_parities;
[INFO] [stderr]     |         ^ help: consider using `_n` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `spec_622`
[INFO] [stderr]    --> src/main.rs:404:9
[INFO] [stderr]     |
[INFO] [stderr] 404 |     let spec_622 = CodeSpec{
[INFO] [stderr]     |         ^^^^^^^^ help: consider using `_spec_622` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `rows`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     rows: i32,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cols`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     cols: i32,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `parities_per_row`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     parities_per_row: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `parities_per_col`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     parities_per_col: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Data`
[INFO] [stderr]   --> src/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Data(DataChunkIndex),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LocalParity`
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     LocalParity(LocalParityIndex),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GlobalParity`
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     GlobalParity(GlobalParityIndex),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `global_parities`
[INFO] [stderr]   --> src/main.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     global_parities: Vec<Vec<u8>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_dot`
[INFO] [stderr]    --> src/main.rs:103:1
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn v_dot(a: &Vec<u8>, b: &Vec<u8>) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_add`
[INFO] [stderr]    --> src/main.rs:114:1
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn v_add(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_add_c`
[INFO] [stderr]    --> src/main.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn v_add_c(a: &Vec<u8>, c: u8) -> Vec<u8> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_mult`
[INFO] [stderr]    --> src/main.rs:122:1
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn v_mult(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8>{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_mult_c`
[INFO] [stderr]    --> src/main.rs:126:1
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn v_mult_c(a: &Vec<u8>, c: u8) -> Vec<u8>{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_matrix`
[INFO] [stderr]    --> src/main.rs:130:1
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn to_matrix(a: &Vec<&Vec<u8>>) -> la::Matrix<f32> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rank`
[INFO] [stderr]    --> src/main.rs:145:1
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn rank(svd: &la::SVD<f32>) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `one_null_basis`
[INFO] [stderr]    --> src/main.rs:157:1
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn one_null_basis(svd: &la::SVD<f32>) -> Vec<u8> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `one_null_basis_wrapper`
[INFO] [stderr]    --> src/main.rs:170:1
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn one_null_basis_wrapper(a: &Vec<&Vec<u8>>) -> Vec<u8> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rank_wrapper`
[INFO] [stderr]    --> src/main.rs:179:1
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn rank_wrapper(a: &Vec<&Vec<u8>>) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_g`
[INFO] [stderr]    --> src/main.rs:189:1
[INFO] [stderr]     |
[INFO] [stderr] 189 | fn generate_g(spec: &GPCSpec) -> Vec<Vec<u8>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_gzero`
[INFO] [stderr]    --> src/main.rs:296:1
[INFO] [stderr]     |
[INFO] [stderr] 296 | fn generate_gzero(spec: &GPCSpec) -> Vec<Vec<bool>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `global_coefficients`
[INFO] [stderr]    --> src/main.rs:329:1
[INFO] [stderr]     |
[INFO] [stderr] 329 | fn global_coefficients(spec: &CodeSpec) -> Vec<Vec<u8>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `local_parity_coverage`
[INFO] [stderr]    --> src/main.rs:337:1
[INFO] [stderr]     |
[INFO] [stderr] 337 | fn local_parity_coverage(spec: &CodeSpec) -> CodeResult<std::collections::HashMap<LocalParityIndex, Vec<DataChunkIndex>>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_recoverable`
[INFO] [stderr]    --> src/main.rs:361:1
[INFO] [stderr]     |
[INFO] [stderr] 361 | fn is_recoverable(spec: &CodeSpec, erasures: &Vec<ChunkPosition>) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:72:45
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn encode(spec: &CodeSpec, data_chunks: &Vec<Vec<u8>>) -> CodeResult<CodeWords> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^ help: change this to: `&[Vec<u8>]`
[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: the loop variable `di` is used to index `data_chunks`
[INFO] [stderr]   --> src/main.rs:82:15
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for di in 0..data_chunks.len() {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for (di, <item>) in data_chunks.iter().enumerate() {
[INFO] [stderr]    |         ^^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:86:12
[INFO] [stderr]    |
[INFO] [stderr] 86 |         if code_words.local_parities[lpi as usize].len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!code_words.local_parities[lpi as usize].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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn v_dot(a: &Vec<u8>, b: &Vec<u8>) -> u64 {
[INFO] [stderr]     |             ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:103:26
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn v_dot(a: &Vec<u8>, b: &Vec<u8>) -> u64 {
[INFO] [stderr]     |                          ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |         dot += (a[i] as u64) * (b[i] as u64);
[INFO] [stderr]     |                ^^^^^^^^^^^^^ help: try: `u64::from(a[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 u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:108:32
[INFO] [stderr]     |
[INFO] [stderr] 108 |         dot += (a[i] as u64) * (b[i] as u64);
[INFO] [stderr]     |                                ^^^^^^^^^^^^^ help: try: `u64::from(b[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn v_add(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]     |             ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:114:26
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn v_add(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]     |                          ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:118:15
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn v_add_c(a: &Vec<u8>, c: u8) -> Vec<u8> {
[INFO] [stderr]     |               ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn v_mult(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8>{
[INFO] [stderr]     |              ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:122:27
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn v_mult(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8>{
[INFO] [stderr]     |                           ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:126:16
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn v_mult_c(a: &Vec<u8>, c: u8) -> Vec<u8>{
[INFO] [stderr]     |                ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn to_matrix(a: &Vec<&Vec<u8>>) -> la::Matrix<f32> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: change this to: `&[&Vec<u8>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |     assert!(a.len() > 0);
[INFO] [stderr]     |             ^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!a.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `r` is only used to index `a`.
[INFO] [stderr]    --> src/main.rs:135:14
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for r in 0..a.len() {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for <item> in &a {
[INFO] [stderr]     |         ^^^^^^    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:137:20
[INFO] [stderr]     |
[INFO] [stderr] 137 |             d[i] = a[r][c] as f32;
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: try: `f32::from(a[r][c])`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:138:13
[INFO] [stderr]     |
[INFO] [stderr] 138 |             i = i+1;
[INFO] [stderr]     |             ^^^^^^^ help: replace it with: `i += 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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |             rank = rank + 1
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: replace it with: `rank += 1`
[INFO] [stderr]     |
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:170:30
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn one_null_basis_wrapper(a: &Vec<&Vec<u8>>) -> Vec<u8> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ help: change this to: `&[&Vec<u8>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:171:8
[INFO] [stderr]     |
[INFO] [stderr] 171 |     if a.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `a.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:179:20
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn rank_wrapper(a: &Vec<&Vec<u8>>) -> usize {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: change this to: `&[&Vec<u8>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:180:8
[INFO] [stderr]     |
[INFO] [stderr] 180 |     if a.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `a.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:256:17
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 ug[i] = ug[i] + e as u64 * uu[i];
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `ug[i] += e as u64 * uu[i]`
[INFO] [stderr]     |
[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 u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:256:33
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 ug[i] = ug[i] + e as u64 * uu[i];
[INFO] [stderr]     |                                 ^^^^^^^^ help: try: `u64::from(e)`
[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: the loop variable `i` is used to index `g`
[INFO] [stderr]    --> src/main.rs:274:30
[INFO] [stderr]     |
[INFO] [stderr] 274 |                     for i in 0..g.len() {
[INFO] [stderr]     |                              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 274 |                     for (i, <item>) in g.iter().enumerate() {
[INFO] [stderr]     |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:361:46
[INFO] [stderr]     |
[INFO] [stderr] 361 | fn is_recoverable(spec: &CodeSpec, erasures: &Vec<ChunkPosition>) -> bool {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[ChunkPosition]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/main.rs:369:9
[INFO] [stderr]     |
[INFO] [stderr] 369 | /         match erasure {
[INFO] [stderr] 370 | |             &ChunkPosition::Data(i) => {
[INFO] [stderr] 371 | |                 data_missing.push(i);
[INFO] [stderr] 372 | |             },
[INFO] [stderr] ...   |
[INFO] [stderr] 378 | |             },
[INFO] [stderr] 379 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 369 |         match *erasure {
[INFO] [stderr] 370 |             ChunkPosition::Data(i) => {
[INFO] [stderr] 371 |                 data_missing.push(i);
[INFO] [stderr] 372 |             },
[INFO] [stderr] 373 |             ChunkPosition::GlobalParity(i) => {
[INFO] [stderr] 374 |                 global_parity_missing.push(i);
[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:384:9
[INFO] [stderr]     |
[INFO] [stderr] 384 | /         match erasure {
[INFO] [stderr] 385 | |             &ChunkPosition::Data(i) => {
[INFO] [stderr] 386 | |                 let local_parity_index = local_parity_for_data_chunk(spec, i);
[INFO] [stderr] 387 | |                 if !unusable_local_parities.contains(&local_parity_index) {
[INFO] [stderr] ...   |
[INFO] [stderr] 392 | |             _ => (),
[INFO] [stderr] 393 | |         }
[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] 384 |         if let &ChunkPosition::Data(i) = erasure {
[INFO] [stderr] 385 |     let local_parity_index = local_parity_for_data_chunk(spec, i);
[INFO] [stderr] 386 |     if !unusable_local_parities.contains(&local_parity_index) {
[INFO] [stderr] 387 |         unusable_local_parities.push(local_parity_index);
[INFO] [stderr] 388 |         locally_recoverable = locally_recoverable + 1;
[INFO] [stderr] 389 |     }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/main.rs:384:9
[INFO] [stderr]     |
[INFO] [stderr] 384 | /         match erasure {
[INFO] [stderr] 385 | |             &ChunkPosition::Data(i) => {
[INFO] [stderr] 386 | |                 let local_parity_index = local_parity_for_data_chunk(spec, i);
[INFO] [stderr] 387 | |                 if !unusable_local_parities.contains(&local_parity_index) {
[INFO] [stderr] ...   |
[INFO] [stderr] 392 | |             _ => (),
[INFO] [stderr] 393 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 384 |         match *erasure {
[INFO] [stderr] 385 |             ChunkPosition::Data(i) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:389:21
[INFO] [stderr]     |
[INFO] [stderr] 389 |                     locally_recoverable = locally_recoverable + 1;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `locally_recoverable += 1`
[INFO] [stderr]     |
[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: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider using `_rng` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:331:9
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let k = spec.data_chunks;
[INFO] [stderr]     |         ^ help: consider using `_k` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:332:9
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let n = spec.data_chunks + spec.local_parities + spec.global_parities;
[INFO] [stderr]     |         ^ help: consider using `_n` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `spec_622`
[INFO] [stderr]    --> src/main.rs:404:9
[INFO] [stderr]     |
[INFO] [stderr] 404 |     let spec_622 = CodeSpec{
[INFO] [stderr]     |         ^^^^^^^^ help: consider using `_spec_622` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `global_parities`
[INFO] [stderr]   --> src/main.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     global_parities: Vec<Vec<u8>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_add_c`
[INFO] [stderr]    --> src/main.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn v_add_c(a: &Vec<u8>, c: u8) -> Vec<u8> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `v_mult`
[INFO] [stderr]    --> src/main.rs:122:1
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn v_mult(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8>{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `global_coefficients`
[INFO] [stderr]    --> src/main.rs:329:1
[INFO] [stderr]     |
[INFO] [stderr] 329 | fn global_coefficients(spec: &CodeSpec) -> Vec<Vec<u8>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_gpc_gzero_2x2_2_1`
[INFO] [stderr]    --> src/main.rs:597:5
[INFO] [stderr]     |
[INFO] [stderr] 597 |     fn test_gpc_gzero_2x2_2_1() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_gpc_gzero_2x2_1_2`
[INFO] [stderr]    --> src/main.rs:621:5
[INFO] [stderr]     |
[INFO] [stderr] 621 |     fn test_gpc_gzero_2x2_1_2() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:72:45
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn encode(spec: &CodeSpec, data_chunks: &Vec<Vec<u8>>) -> CodeResult<CodeWords> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^ help: change this to: `&[Vec<u8>]`
[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: the loop variable `di` is used to index `data_chunks`
[INFO] [stderr]   --> src/main.rs:82:15
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for di in 0..data_chunks.len() {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for (di, <item>) in data_chunks.iter().enumerate() {
[INFO] [stderr]    |         ^^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:86:12
[INFO] [stderr]    |
[INFO] [stderr] 86 |         if code_words.local_parities[lpi as usize].len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!code_words.local_parities[lpi as usize].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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn v_dot(a: &Vec<u8>, b: &Vec<u8>) -> u64 {
[INFO] [stderr]     |             ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:103:26
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn v_dot(a: &Vec<u8>, b: &Vec<u8>) -> u64 {
[INFO] [stderr]     |                          ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |         dot += (a[i] as u64) * (b[i] as u64);
[INFO] [stderr]     |                ^^^^^^^^^^^^^ help: try: `u64::from(a[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 u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:108:32
[INFO] [stderr]     |
[INFO] [stderr] 108 |         dot += (a[i] as u64) * (b[i] as u64);
[INFO] [stderr]     |                                ^^^^^^^^^^^^^ help: try: `u64::from(b[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn v_add(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]     |             ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:114:26
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn v_add(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]     |                          ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:118:15
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn v_add_c(a: &Vec<u8>, c: u8) -> Vec<u8> {
[INFO] [stderr]     |               ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:122:14
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn v_mult(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8>{
[INFO] [stderr]     |              ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:122:27
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn v_mult(a: &Vec<u8>, b: &Vec<u8>) -> Vec<u8>{
[INFO] [stderr]     |                           ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:126:16
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn v_mult_c(a: &Vec<u8>, c: u8) -> Vec<u8>{
[INFO] [stderr]     |                ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn to_matrix(a: &Vec<&Vec<u8>>) -> la::Matrix<f32> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: change this to: `&[&Vec<u8>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |     assert!(a.len() > 0);
[INFO] [stderr]     |             ^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!a.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `r` is only used to index `a`.
[INFO] [stderr]    --> src/main.rs:135:14
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for r in 0..a.len() {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for <item> in &a {
[INFO] [stderr]     |         ^^^^^^    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:137:20
[INFO] [stderr]     |
[INFO] [stderr] 137 |             d[i] = a[r][c] as f32;
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: try: `f32::from(a[r][c])`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:138:13
[INFO] [stderr]     |
[INFO] [stderr] 138 |             i = i+1;
[INFO] [stderr]     |             ^^^^^^^ help: replace it with: `i += 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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |             rank = rank + 1
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: replace it with: `rank += 1`
[INFO] [stderr]     |
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:170:30
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn one_null_basis_wrapper(a: &Vec<&Vec<u8>>) -> Vec<u8> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ help: change this to: `&[&Vec<u8>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:171:8
[INFO] [stderr]     |
[INFO] [stderr] 171 |     if a.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `a.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:179:20
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn rank_wrapper(a: &Vec<&Vec<u8>>) -> usize {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ help: change this to: `&[&Vec<u8>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/main.rs:180:8
[INFO] [stderr]     |
[INFO] [stderr] 180 |     if a.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `a.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:256:17
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 ug[i] = ug[i] + e as u64 * uu[i];
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `ug[i] += e as u64 * uu[i]`
[INFO] [stderr]     |
[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 u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:256:33
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 ug[i] = ug[i] + e as u64 * uu[i];
[INFO] [stderr]     |                                 ^^^^^^^^ help: try: `u64::from(e)`
[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: the loop variable `i` is used to index `g`
[INFO] [stderr]    --> src/main.rs:274:30
[INFO] [stderr]     |
[INFO] [stderr] 274 |                     for i in 0..g.len() {
[INFO] [stderr]     |                              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 274 |                     for (i, <item>) in g.iter().enumerate() {
[INFO] [stderr]     |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:361:46
[INFO] [stderr]     |
[INFO] [stderr] 361 | fn is_recoverable(spec: &CodeSpec, erasures: &Vec<ChunkPosition>) -> bool {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[ChunkPosition]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/main.rs:369:9
[INFO] [stderr]     |
[INFO] [stderr] 369 | /         match erasure {
[INFO] [stderr] 370 | |             &ChunkPosition::Data(i) => {
[INFO] [stderr] 371 | |                 data_missing.push(i);
[INFO] [stderr] 372 | |             },
[INFO] [stderr] ...   |
[INFO] [stderr] 378 | |             },
[INFO] [stderr] 379 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 369 |         match *erasure {
[INFO] [stderr] 370 |             ChunkPosition::Data(i) => {
[INFO] [stderr] 371 |                 data_missing.push(i);
[INFO] [stderr] 372 |             },
[INFO] [stderr] 373 |             ChunkPosition::GlobalParity(i) => {
[INFO] [stderr] 374 |                 global_parity_missing.push(i);
[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:384:9
[INFO] [stderr]     |
[INFO] [stderr] 384 | /         match erasure {
[INFO] [stderr] 385 | |             &ChunkPosition::Data(i) => {
[INFO] [stderr] 386 | |                 let local_parity_index = local_parity_for_data_chunk(spec, i);
[INFO] [stderr] 387 | |                 if !unusable_local_parities.contains(&local_parity_index) {
[INFO] [stderr] ...   |
[INFO] [stderr] 392 | |             _ => (),
[INFO] [stderr] 393 | |         }
[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] 384 |         if let &ChunkPosition::Data(i) = erasure {
[INFO] [stderr] 385 |     let local_parity_index = local_parity_for_data_chunk(spec, i);
[INFO] [stderr] 386 |     if !unusable_local_parities.contains(&local_parity_index) {
[INFO] [stderr] 387 |         unusable_local_parities.push(local_parity_index);
[INFO] [stderr] 388 |         locally_recoverable = locally_recoverable + 1;
[INFO] [stderr] 389 |     }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/main.rs:384:9
[INFO] [stderr]     |
[INFO] [stderr] 384 | /         match erasure {
[INFO] [stderr] 385 | |             &ChunkPosition::Data(i) => {
[INFO] [stderr] 386 | |                 let local_parity_index = local_parity_for_data_chunk(spec, i);
[INFO] [stderr] 387 | |                 if !unusable_local_parities.contains(&local_parity_index) {
[INFO] [stderr] ...   |
[INFO] [stderr] 392 | |             _ => (),
[INFO] [stderr] 393 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 384 |         match *erasure {
[INFO] [stderr] 385 |             ChunkPosition::Data(i) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:389:21
[INFO] [stderr]     |
[INFO] [stderr] 389 |                     locally_recoverable = locally_recoverable + 1;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `locally_recoverable += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `"docker" "inspect" "61c4619ea0d9e51700e9a6e688d81d601220a238fced8614f331eba8824a495d"`
[INFO] running `"docker" "rm" "-f" "61c4619ea0d9e51700e9a6e688d81d601220a238fced8614f331eba8824a495d"`
[INFO] [stdout] 61c4619ea0d9e51700e9a6e688d81d601220a238fced8614f331eba8824a495d