[INFO] updating cached repository sabartheman/Rust_huffman_parallel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sabartheman/Rust_huffman_parallel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sabartheman/Rust_huffman_parallel" "work/ex/clippy-test-run/sources/stable/gh/sabartheman/Rust_huffman_parallel"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/sabartheman/Rust_huffman_parallel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sabartheman/Rust_huffman_parallel" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sabartheman/Rust_huffman_parallel"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sabartheman/Rust_huffman_parallel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9856ae702e29f7289fba9dfd14c861fcacf1362d
[INFO] sha for GitHub repo sabartheman/Rust_huffman_parallel: 9856ae702e29f7289fba9dfd14c861fcacf1362d
[INFO] validating manifest of sabartheman/Rust_huffman_parallel 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 sabartheman/Rust_huffman_parallel 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 sabartheman/Rust_huffman_parallel
[INFO] finished frobbing sabartheman/Rust_huffman_parallel
[INFO] frobbed toml for sabartheman/Rust_huffman_parallel written to work/ex/clippy-test-run/sources/stable/gh/sabartheman/Rust_huffman_parallel/Cargo.toml
[INFO] started frobbing sabartheman/Rust_huffman_parallel
[INFO] finished frobbing sabartheman/Rust_huffman_parallel
[INFO] frobbed toml for sabartheman/Rust_huffman_parallel written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sabartheman/Rust_huffman_parallel/Cargo.toml
[INFO] crate sabartheman/Rust_huffman_parallel 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 sabartheman/Rust_huffman_parallel against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/sabartheman/Rust_huffman_parallel:/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" "-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] 83e8f745c25b25288fff33c8557aaa22db13f83bb845557bb836e2574ef2ec2f
[INFO] running `"docker" "start" "-a" "83e8f745c25b25288fff33c8557aaa22db13f83bb845557bb836e2574ef2ec2f"`
[INFO] [stderr]     Checking crossbeam v0.3.0
[INFO] [stderr]     Checking huffman_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |         freq: freq, ch: ch_in,
[INFO] [stderr]     |         ^^^^^^^^^^ help: replace it with: `freq`
[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: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:254:23
[INFO] [stderr]     |
[INFO] [stderr] 254 |               let mut c = new_box(new_node(a.freq + b.freq, None));
[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: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |         freq: freq, ch: ch_in,
[INFO] [stderr]     |         ^^^^^^^^^^ help: replace it with: `freq`
[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: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:254:23
[INFO] [stderr]     |
[INFO] [stderr] 254 |               let mut c = new_box(new_node(a.freq + b.freq, None));
[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: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |             assign_codes(l, h, (s.clone() + "0"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:106:32
[INFO] [stderr]     |
[INFO] [stderr] 106 |             assign_codes(r, h, (s.clone() + "1"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:143:15
[INFO] [stderr]     |
[INFO] [stderr] 143 |           }else {
[INFO] [stderr]     |  _______________^
[INFO] [stderr] 144 | |             if let Some(ref r) = nodeptr.right{
[INFO] [stderr] 145 | |                 nodeptr = r;
[INFO] [stderr] 146 | |             }
[INFO] [stderr] 147 | |         }
[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] 143 |         }else if let Some(ref r) = nodeptr.right{
[INFO] [stderr] 144 |     nodeptr = r;
[INFO] [stderr] 145 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |             assign_codes(l, h, (s.clone() + "0"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:106:32
[INFO] [stderr]     |
[INFO] [stderr] 106 |             assign_codes(r, h, (s.clone() + "1"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:143:15
[INFO] [stderr]     |
[INFO] [stderr] 143 |           }else {
[INFO] [stderr]     |  _______________^
[INFO] [stderr] 144 | |             if let Some(ref r) = nodeptr.right{
[INFO] [stderr] 145 | |                 nodeptr = r;
[INFO] [stderr] 146 | |             }
[INFO] [stderr] 147 | |         }
[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] 143 |         }else if let Some(ref r) = nodeptr.right{
[INFO] [stderr] 144 |     nodeptr = r;
[INFO] [stderr] 145 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:499:16
[INFO] [stderr]     |
[INFO] [stderr] 499 |     if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_finish - tp4_start, t3-t1, t2-s2, t3-s3) {
[INFO] [stderr]     |                ^ help: consider using `_e` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:499:16
[INFO] [stderr]     |
[INFO] [stderr] 499 |     if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_finish - tp4_start, t3-t1, t2-s2, t3-s3) {
[INFO] [stderr]     |                ^ help: consider using `_e` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/main.rs:95:20
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn assign_codes(p: &Box<Node>,
[INFO] [stderr]    |                    ^^^^^^^^^^ help: try: `&Node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::borrowed_box)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]    --> src/main.rs:134:33
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn decode_string(s: &str, root: &Box<Node>) -> String {
[INFO] [stderr]     |                                 ^^^^^^^^^^ help: try: `&Node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/main.rs:303:5
[INFO] [stderr]     |
[INFO] [stderr] 303 | /     let mut tp4_finish = precise_time_s();
[INFO] [stderr] 304 | |
[INFO] [stderr] 305 | |
[INFO] [stderr] 306 | |     if (input_string.len() % 4) == 0 {
[INFO] [stderr] ...   |
[INFO] [stderr] 337 | |         tp4_finish = precise_time_s();
[INFO] [stderr] 338 | |     }
[INFO] [stderr]     | |_____^ help: it is more idiomatic to write: `let <mut> tp4_finish = if (input_string.len() % 4) == 0 { ..; precise_time_s() } else { precise_time_s() };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:321:60
[INFO] [stderr]     |
[INFO] [stderr] 321 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/4)+1..((&i*&input_temp.len())/4)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:321:94
[INFO] [stderr]     |
[INFO] [stderr] 321 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/4)+1..((&i*&input_temp.len())/4)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 321 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/4)+1..((i*input_temp.len())/4)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                         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: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:351:60
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/3)+1..((&i*&input_temp.len())/3)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:351:94
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/3)+1..((&i*&input_temp.len())/3)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/3)+1..((i*input_temp.len())/3)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:352:25
[INFO] [stderr]     |
[INFO] [stderr] 352 |                         i = i + 1;
[INFO] [stderr]     |                         ^^^^^^^^^ help: replace it with: `i += 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: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:380:60
[INFO] [stderr]     |
[INFO] [stderr] 380 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/2)+1..((&i*&input_temp.len())/2)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:380:94
[INFO] [stderr]     |
[INFO] [stderr] 380 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/2)+1..((&i*&input_temp.len())/2)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 380 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/2)+1..((i*input_temp.len())/2)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:381:25
[INFO] [stderr]     |
[INFO] [stderr] 381 |                         i = i + 1;
[INFO] [stderr]     |                         ^^^^^^^^^ help: replace it with: `i += 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] error: any number modulo 1 will be 0
[INFO] [stderr]    --> src/main.rs:398:7
[INFO] [stderr]     |
[INFO] [stderr] 398 |     if(input_string.len() %1) == 0 {
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::modulo_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#modulo_one
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]   --> src/main.rs:95:20
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn assign_codes(p: &Box<Node>,
[INFO] [stderr]    |                    ^^^^^^^^^^ help: try: `&Node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::borrowed_box)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `((&i-1)*&input_temp.len())`
[INFO] [stderr]    --> src/main.rs:409:59
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:409:60
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `&Box<T>`. Consider using just `&T`
[INFO] [stderr]    --> src/main.rs:134:33
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn decode_string(s: &str, root: &Box<Node>) -> String {
[INFO] [stderr]     |                                 ^^^^^^^^^^ help: try: `&Node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `(&i*&input_temp.len())`
[INFO] [stderr] 
[INFO] [stderr]    --> src/main.rs:409:93
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:409:94
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((i*input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:410:25
[INFO] [stderr]     |
[INFO] [stderr] 410 |                         i = i + 1;
[INFO] [stderr]     |                         ^^^^^^^^^ help: replace it with: `i += 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] error: any number modulo 1 will be 0
[INFO] [stderr]    --> src/main.rs:481:8
[INFO] [stderr]     |
[INFO] [stderr] 481 |     if (input_string.len() % 1) == 0{
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#modulo_one
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/main.rs:303:5
[INFO] [stderr]     |
[INFO] [stderr] 303 | /     let mut tp4_finish = precise_time_s();
[INFO] [stderr] 304 | |
[INFO] [stderr] 305 | |
[INFO] [stderr] 306 | |     if (input_string.len() % 4) == 0 {
[INFO] [stderr] ...   |
[INFO] [stderr] 337 | |         tp4_finish = precise_time_s();
[INFO] [stderr] 338 | |     }
[INFO] [stderr]     | |_____^ help: it is more idiomatic to write: `let <mut> tp4_finish = if (input_string.len() % 4) == 0 { ..; precise_time_s() } else { precise_time_s() };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:321:60
[INFO] [stderr]     |
[INFO] [stderr] 321 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/4)+1..((&i*&input_temp.len())/4)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:321:94
[INFO] [stderr]     |
[INFO] [stderr] 321 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/4)+1..((&i*&input_temp.len())/4)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 321 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/4)+1..((i*input_temp.len())/4)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:322:25
[INFO] [stderr]     |
[INFO] [stderr] 322 |                         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] error: Could not compile `huffman_rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:351:60
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/3)+1..((&i*&input_temp.len())/3)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:351:94
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/3)+1..((&i*&input_temp.len())/3)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/3)+1..((i*input_temp.len())/3)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:352:25
[INFO] [stderr]     |
[INFO] [stderr] 352 |                         i = i + 1;
[INFO] [stderr]     |                         ^^^^^^^^^ help: replace it with: `i += 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: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:380:60
[INFO] [stderr]     |
[INFO] [stderr] 380 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/2)+1..((&i*&input_temp.len())/2)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:380:94
[INFO] [stderr]     |
[INFO] [stderr] 380 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/2)+1..((&i*&input_temp.len())/2)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 380 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/2)+1..((i*input_temp.len())/2)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:381:25
[INFO] [stderr]     |
[INFO] [stderr] 381 |                         i = i + 1;
[INFO] [stderr]     |                         ^^^^^^^^^ help: replace it with: `i += 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] error: any number modulo 1 will be 0
[INFO] [stderr]    --> src/main.rs:398:7
[INFO] [stderr]     |
[INFO] [stderr] 398 |     if(input_string.len() %1) == 0 {
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::modulo_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#modulo_one
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `((&i-1)*&input_temp.len())`
[INFO] [stderr]    --> src/main.rs:409:59
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]    --> src/main.rs:409:60
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                            ^^^^^^^^-----------------^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: use the right value directly: `input_temp.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `(&i*&input_temp.len())`
[INFO] [stderr]    --> src/main.rs:409:93
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/main.rs:409:94
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((&i*&input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 409 |                         *elem = encode_string(&input_temp[(((&i-1)*&input_temp.len())/1)+1..((i*input_temp.len())/1)], &h_temp);
[INFO] [stderr]     |                                                                                               ^ ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:410:25
[INFO] [stderr]     |
[INFO] [stderr] 410 |                         i = i + 1;
[INFO] [stderr]     |                         ^^^^^^^^^ help: replace it with: `i += 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] error: any number modulo 1 will be 0
[INFO] [stderr]    --> src/main.rs:481:8
[INFO] [stderr]     |
[INFO] [stderr] 481 |     if (input_string.len() % 1) == 0{
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#modulo_one
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `huffman_rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "83e8f745c25b25288fff33c8557aaa22db13f83bb845557bb836e2574ef2ec2f"`
[INFO] running `"docker" "rm" "-f" "83e8f745c25b25288fff33c8557aaa22db13f83bb845557bb836e2574ef2ec2f"`
[INFO] [stdout] 83e8f745c25b25288fff33c8557aaa22db13f83bb845557bb836e2574ef2ec2f