Nov 28 00:05:09.849 INFO checking murphym18/huffman_code against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 00:05:09.849 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 00:05:10.355 INFO [stdout] 6a70f410c51bda1b4734aaac0d7be2d62f806e091209d6089d93a2c6a0d1dee3
Nov 28 00:05:10.362 INFO running `"docker" "start" "-a" "6a70f410c51bda1b4734aaac0d7be2d62f806e091209d6089d93a2c6a0d1dee3"`
Nov 28 00:05:11.852 INFO [stderr] usermod: no changes
Nov 28 00:05:11.942 INFO [stderr]     Checking huffman_code v0.1.0 (/source)
Nov 28 00:05:12.480 INFO [stderr] warning: unused import: `std::io`
Nov 28 00:05:12.480 INFO [stderr]  --> src/lib.rs:1:5
Nov 28 00:05:12.480 INFO [stderr]   |
Nov 28 00:05:12.480 INFO [stderr] 1 | use std::io;
Nov 28 00:05:12.480 INFO [stderr]   |     ^^^^^^^
Nov 28 00:05:12.481 INFO [stderr]   |
Nov 28 00:05:12.481 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 00:05:12.481 INFO [stderr] 
Nov 28 00:05:12.481 INFO [stderr] warning: unused import: `Cursor`
Nov 28 00:05:12.481 INFO [stderr]  --> src/lib.rs:5:28
Nov 28 00:05:12.481 INFO [stderr]   |
Nov 28 00:05:12.481 INFO [stderr] 5 | use std::io::{Read, Write, Cursor};
Nov 28 00:05:12.481 INFO [stderr]   |                            ^^^^^^
Nov 28 00:05:12.481 INFO [stderr] 
Nov 28 00:05:12.544 INFO [stderr] warning: unused import: `std::io`
Nov 28 00:05:12.544 INFO [stderr]  --> src/lib.rs:1:5
Nov 28 00:05:12.545 INFO [stderr]   |
Nov 28 00:05:12.545 INFO [stderr] 1 | use std::io;
Nov 28 00:05:12.545 INFO [stderr]   |     ^^^^^^^
Nov 28 00:05:12.545 INFO [stderr]   |
Nov 28 00:05:12.545 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 00:05:12.545 INFO [stderr] 
Nov 28 00:05:12.545 INFO [stderr] warning: unused import: `Cursor`
Nov 28 00:05:12.545 INFO [stderr]  --> src/lib.rs:5:28
Nov 28 00:05:12.545 INFO [stderr]   |
Nov 28 00:05:12.545 INFO [stderr] 5 | use std::io::{Read, Write, Cursor};
Nov 28 00:05:12.545 INFO [stderr]   |                            ^^^^^^
Nov 28 00:05:12.545 INFO [stderr] 
Nov 28 00:05:12.829 INFO [stderr] warning: unused variable: `left`
Nov 28 00:05:12.845 INFO [stderr]    --> src/lib.rs:171:26
Nov 28 00:05:12.845 INFO [stderr]     |
Nov 28 00:05:12.845 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Nov 28 00:05:12.845 INFO [stderr]     |                          ^^^^ help: try ignoring the field: `left: _`
Nov 28 00:05:12.845 INFO [stderr]     |
Nov 28 00:05:12.845 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 00:05:12.845 INFO [stderr] 
Nov 28 00:05:12.845 INFO [stderr] warning: unused variable: `right`
Nov 28 00:05:12.845 INFO [stderr]    --> src/lib.rs:171:36
Nov 28 00:05:12.845 INFO [stderr]     |
Nov 28 00:05:12.845 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Nov 28 00:05:12.845 INFO [stderr]     |                                    ^^^^^ help: try ignoring the field: `right: _`
Nov 28 00:05:12.845 INFO [stderr] 
Nov 28 00:05:12.845 INFO [stderr] warning: unused variable: `value`
Nov 28 00:05:12.845 INFO [stderr]    --> src/lib.rs:172:22
Nov 28 00:05:12.845 INFO [stderr]     |
Nov 28 00:05:12.845 INFO [stderr] 172 |         Leaf {count, value} => count
Nov 28 00:05:12.845 INFO [stderr]     |                      ^^^^^ help: try ignoring the field: `value: _`
Nov 28 00:05:12.845 INFO [stderr] 
Nov 28 00:05:12.845 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.845 INFO [stderr]    --> src/lib.rs:178:15
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 178 |         Node {count, ref left, ref right} => {
Nov 28 00:05:12.846 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.846 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.846 INFO [stderr]    --> src/lib.rs:235:19
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 235 |             Leaf {count, value} => {
Nov 28 00:05:12.846 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.846 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.846 INFO [stderr]    --> src/lib.rs:240:19
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 240 |             Node {count, ref left, ref right} => {
Nov 28 00:05:12.846 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.846 INFO [stderr] warning: unused variable: `p`
Nov 28 00:05:12.846 INFO [stderr]    --> src/lib.rs:303:9
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 303 |     let p = 97 as u8;
Nov 28 00:05:12.846 INFO [stderr]     |         ^ help: consider using `_p` instead
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.846 INFO [stderr] warning: unused variable: `value`
Nov 28 00:05:12.846 INFO [stderr]    --> src/lib.rs:346:26
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 346 |             Leaf {count, value} => size = size + count,
Nov 28 00:05:12.846 INFO [stderr]     |                          ^^^^^ help: try ignoring the field: `value: _`
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.846 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.846 INFO [stderr]    --> src/lib.rs:395:15
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 395 |         Node {count, ref left, ref right} => {
Nov 28 00:05:12.846 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.846 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.846 INFO [stderr]    --> src/lib.rs:403:15
Nov 28 00:05:12.846 INFO [stderr]     |
Nov 28 00:05:12.846 INFO [stderr] 403 |         Leaf {count, value}  => {
Nov 28 00:05:12.846 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.846 INFO [stderr] 
Nov 28 00:05:12.864 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:12.864 INFO [stderr]    --> src/lib.rs:215:9
Nov 28 00:05:12.864 INFO [stderr]     |
Nov 28 00:05:12.864 INFO [stderr] 215 |     let mut tree = make_tree(table_vec);
Nov 28 00:05:12.864 INFO [stderr]     |         ----^^^^
Nov 28 00:05:12.864 INFO [stderr]     |         |
Nov 28 00:05:12.864 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:12.864 INFO [stderr]     |
Nov 28 00:05:12.864 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 00:05:12.864 INFO [stderr] 
Nov 28 00:05:12.871 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:12.871 INFO [stderr]    --> src/lib.rs:300:9
Nov 28 00:05:12.871 INFO [stderr]     |
Nov 28 00:05:12.871 INFO [stderr] 300 |     let mut tree = make_tree(v);
Nov 28 00:05:12.871 INFO [stderr]     |         ----^^^^
Nov 28 00:05:12.871 INFO [stderr]     |         |
Nov 28 00:05:12.871 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:12.871 INFO [stderr] 
Nov 28 00:05:12.880 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:12.880 INFO [stderr]    --> src/lib.rs:350:9
Nov 28 00:05:12.880 INFO [stderr]     |
Nov 28 00:05:12.880 INFO [stderr] 350 |     let mut buf: [u8; 8] = unsafe {
Nov 28 00:05:12.880 INFO [stderr]     |         ----^^^
Nov 28 00:05:12.880 INFO [stderr]     |         |
Nov 28 00:05:12.880 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:12.880 INFO [stderr] 
Nov 28 00:05:12.880 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:12.880 INFO [stderr]    --> src/lib.rs:388:9
Nov 28 00:05:12.880 INFO [stderr]     |
Nov 28 00:05:12.880 INFO [stderr] 388 |     let mut bits = BitString::new();
Nov 28 00:05:12.880 INFO [stderr]     |         ----^^^^
Nov 28 00:05:12.880 INFO [stderr]     |         |
Nov 28 00:05:12.881 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:12.881 INFO [stderr] 
Nov 28 00:05:12.883 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:12.883 INFO [stderr]    --> src/lib.rs:393:29
Nov 28 00:05:12.883 INFO [stderr]     |
Nov 28 00:05:12.883 INFO [stderr] 393 | fn traverse(current: &Tree, mut bits: BitString, table: &mut HashMap<u8, BitString>) {
Nov 28 00:05:12.883 INFO [stderr]     |                             ----^^^^
Nov 28 00:05:12.883 INFO [stderr]     |                             |
Nov 28 00:05:12.883 INFO [stderr]     |                             help: remove this `mut`
Nov 28 00:05:12.883 INFO [stderr] 
Nov 28 00:05:12.888 INFO [stderr] warning: function is never used: `byte_string`
Nov 28 00:05:12.888 INFO [stderr]    --> src/lib.rs:138:1
Nov 28 00:05:12.888 INFO [stderr]     |
Nov 28 00:05:12.888 INFO [stderr] 138 | fn byte_string(data: u8, num_bits: u8) -> String {
Nov 28 00:05:12.888 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.888 INFO [stderr]     |
Nov 28 00:05:12.888 INFO [stderr]     = note: #[warn(dead_code)] on by default
Nov 28 00:05:12.888 INFO [stderr] 
Nov 28 00:05:12.890 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:12.890 INFO [stderr]    --> src/lib.rs:104:9
Nov 28 00:05:12.890 INFO [stderr]     |
Nov 28 00:05:12.890 INFO [stderr] 104 |         self.output.write(&a);
Nov 28 00:05:12.890 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.890 INFO [stderr]     |
Nov 28 00:05:12.890 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 00:05:12.890 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:12.890 INFO [stderr] 
Nov 28 00:05:12.890 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:12.890 INFO [stderr]    --> src/lib.rs:236:17
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr] 236 |                 output.write(&[value]);
Nov 28 00:05:12.891 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:12.891 INFO [stderr] 
Nov 28 00:05:12.891 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:12.891 INFO [stderr]    --> src/lib.rs:306:5
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr] 306 |     f.seek(SeekFrom::Start(0));
Nov 28 00:05:12.891 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:12.891 INFO [stderr] 
Nov 28 00:05:12.891 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:12.891 INFO [stderr]    --> src/lib.rs:321:5
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr] 321 |     output.write_all(&list_len_buf);
Nov 28 00:05:12.891 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:12.891 INFO [stderr] 
Nov 28 00:05:12.891 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:12.891 INFO [stderr]    --> src/lib.rs:334:17
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr] 334 |                 output.write_all(&buf);
Nov 28 00:05:12.891 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:12.891 INFO [stderr] 
Nov 28 00:05:12.891 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:12.891 INFO [stderr]    --> src/lib.rs:353:5
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr] 353 |     output.write_all(&buf);
Nov 28 00:05:12.891 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:12.891 INFO [stderr]     |
Nov 28 00:05:12.891 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:12.891 INFO [stderr] 
Nov 28 00:05:12.946 INFO [stderr] warning: unused variable: `left`
Nov 28 00:05:12.946 INFO [stderr]    --> src/lib.rs:171:26
Nov 28 00:05:12.946 INFO [stderr]     |
Nov 28 00:05:12.946 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Nov 28 00:05:12.946 INFO [stderr]     |                          ^^^^ help: try ignoring the field: `left: _`
Nov 28 00:05:12.946 INFO [stderr]     |
Nov 28 00:05:12.946 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 00:05:12.946 INFO [stderr] 
Nov 28 00:05:12.946 INFO [stderr] warning: unused variable: `right`
Nov 28 00:05:12.946 INFO [stderr]    --> src/lib.rs:171:36
Nov 28 00:05:12.947 INFO [stderr]     |
Nov 28 00:05:12.947 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Nov 28 00:05:12.947 INFO [stderr]     |                                    ^^^^^ help: try ignoring the field: `right: _`
Nov 28 00:05:12.947 INFO [stderr] 
Nov 28 00:05:12.947 INFO [stderr] warning: unused variable: `value`
Nov 28 00:05:12.947 INFO [stderr]    --> src/lib.rs:172:22
Nov 28 00:05:12.947 INFO [stderr]     |
Nov 28 00:05:12.947 INFO [stderr] 172 |         Leaf {count, value} => count
Nov 28 00:05:12.947 INFO [stderr]     |                      ^^^^^ help: try ignoring the field: `value: _`
Nov 28 00:05:12.947 INFO [stderr] 
Nov 28 00:05:12.947 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.947 INFO [stderr]    --> src/lib.rs:178:15
Nov 28 00:05:12.947 INFO [stderr]     |
Nov 28 00:05:12.947 INFO [stderr] 178 |         Node {count, ref left, ref right} => {
Nov 28 00:05:12.947 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.947 INFO [stderr] 
Nov 28 00:05:12.947 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.947 INFO [stderr]    --> src/lib.rs:235:19
Nov 28 00:05:12.947 INFO [stderr]     |
Nov 28 00:05:12.947 INFO [stderr] 235 |             Leaf {count, value} => {
Nov 28 00:05:12.947 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.947 INFO [stderr] 
Nov 28 00:05:12.947 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.947 INFO [stderr]    --> src/lib.rs:240:19
Nov 28 00:05:12.947 INFO [stderr]     |
Nov 28 00:05:12.947 INFO [stderr] 240 |             Node {count, ref left, ref right} => {
Nov 28 00:05:12.952 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.952 INFO [stderr] 
Nov 28 00:05:12.952 INFO [stderr] warning: unused variable: `p`
Nov 28 00:05:12.952 INFO [stderr]    --> src/lib.rs:303:9
Nov 28 00:05:12.952 INFO [stderr]     |
Nov 28 00:05:12.952 INFO [stderr] 303 |     let p = 97 as u8;
Nov 28 00:05:12.952 INFO [stderr]     |         ^ help: consider using `_p` instead
Nov 28 00:05:12.952 INFO [stderr] 
Nov 28 00:05:12.952 INFO [stderr] warning: unused variable: `value`
Nov 28 00:05:12.952 INFO [stderr]    --> src/lib.rs:346:26
Nov 28 00:05:12.952 INFO [stderr]     |
Nov 28 00:05:12.952 INFO [stderr] 346 |             Leaf {count, value} => size = size + count,
Nov 28 00:05:12.952 INFO [stderr]     |                          ^^^^^ help: try ignoring the field: `value: _`
Nov 28 00:05:12.952 INFO [stderr] 
Nov 28 00:05:12.952 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.952 INFO [stderr]    --> src/lib.rs:395:15
Nov 28 00:05:12.952 INFO [stderr]     |
Nov 28 00:05:12.952 INFO [stderr] 395 |         Node {count, ref left, ref right} => {
Nov 28 00:05:12.952 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.952 INFO [stderr] 
Nov 28 00:05:12.952 INFO [stderr] warning: unused variable: `count`
Nov 28 00:05:12.952 INFO [stderr]    --> src/lib.rs:403:15
Nov 28 00:05:12.952 INFO [stderr]     |
Nov 28 00:05:12.952 INFO [stderr] 403 |         Leaf {count, value}  => {
Nov 28 00:05:12.952 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Nov 28 00:05:12.952 INFO [stderr] 
Nov 28 00:05:13.032 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:13.032 INFO [stderr]    --> src/lib.rs:215:9
Nov 28 00:05:13.032 INFO [stderr]     |
Nov 28 00:05:13.032 INFO [stderr] 215 |     let mut tree = make_tree(table_vec);
Nov 28 00:05:13.032 INFO [stderr]     |         ----^^^^
Nov 28 00:05:13.032 INFO [stderr]     |         |
Nov 28 00:05:13.032 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:13.032 INFO [stderr]     |
Nov 28 00:05:13.032 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 00:05:13.032 INFO [stderr] 
Nov 28 00:05:13.060 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:13.060 INFO [stderr]    --> src/lib.rs:300:9
Nov 28 00:05:13.060 INFO [stderr]     |
Nov 28 00:05:13.061 INFO [stderr] 300 |     let mut tree = make_tree(v);
Nov 28 00:05:13.061 INFO [stderr]     |         ----^^^^
Nov 28 00:05:13.061 INFO [stderr]     |         |
Nov 28 00:05:13.061 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:13.061 INFO [stderr] 
Nov 28 00:05:13.065 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:13.065 INFO [stderr]    --> src/lib.rs:350:9
Nov 28 00:05:13.066 INFO [stderr]     |
Nov 28 00:05:13.066 INFO [stderr] 350 |     let mut buf: [u8; 8] = unsafe {
Nov 28 00:05:13.066 INFO [stderr]     |         ----^^^
Nov 28 00:05:13.066 INFO [stderr]     |         |
Nov 28 00:05:13.066 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:13.066 INFO [stderr] 
Nov 28 00:05:13.068 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:13.069 INFO [stderr]    --> src/lib.rs:388:9
Nov 28 00:05:13.069 INFO [stderr]     |
Nov 28 00:05:13.069 INFO [stderr] 388 |     let mut bits = BitString::new();
Nov 28 00:05:13.069 INFO [stderr]     |         ----^^^^
Nov 28 00:05:13.069 INFO [stderr]     |         |
Nov 28 00:05:13.069 INFO [stderr]     |         help: remove this `mut`
Nov 28 00:05:13.070 INFO [stderr] 
Nov 28 00:05:13.070 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:05:13.070 INFO [stderr]    --> src/lib.rs:393:29
Nov 28 00:05:13.070 INFO [stderr]     |
Nov 28 00:05:13.070 INFO [stderr] 393 | fn traverse(current: &Tree, mut bits: BitString, table: &mut HashMap<u8, BitString>) {
Nov 28 00:05:13.070 INFO [stderr]     |                             ----^^^^
Nov 28 00:05:13.070 INFO [stderr]     |                             |
Nov 28 00:05:13.070 INFO [stderr]     |                             help: remove this `mut`
Nov 28 00:05:13.071 INFO [stderr] 
Nov 28 00:05:13.097 INFO [stderr] warning: function is never used: `byte_string`
Nov 28 00:05:13.097 INFO [stderr]    --> src/lib.rs:138:1
Nov 28 00:05:13.097 INFO [stderr]     |
Nov 28 00:05:13.097 INFO [stderr] 138 | fn byte_string(data: u8, num_bits: u8) -> String {
Nov 28 00:05:13.097 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.097 INFO [stderr]     |
Nov 28 00:05:13.097 INFO [stderr]     = note: #[warn(dead_code)] on by default
Nov 28 00:05:13.098 INFO [stderr] 
Nov 28 00:05:13.105 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:13.105 INFO [stderr]    --> src/lib.rs:104:9
Nov 28 00:05:13.105 INFO [stderr]     |
Nov 28 00:05:13.105 INFO [stderr] 104 |         self.output.write(&a);
Nov 28 00:05:13.105 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.105 INFO [stderr]     |
Nov 28 00:05:13.106 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 00:05:13.106 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:13.106 INFO [stderr] 
Nov 28 00:05:13.106 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:13.106 INFO [stderr]    --> src/lib.rs:236:17
Nov 28 00:05:13.106 INFO [stderr]     |
Nov 28 00:05:13.106 INFO [stderr] 236 |                 output.write(&[value]);
Nov 28 00:05:13.107 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.107 INFO [stderr]     |
Nov 28 00:05:13.107 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:13.107 INFO [stderr] 
Nov 28 00:05:13.107 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:13.107 INFO [stderr]    --> src/lib.rs:306:5
Nov 28 00:05:13.108 INFO [stderr]     |
Nov 28 00:05:13.108 INFO [stderr] 306 |     f.seek(SeekFrom::Start(0));
Nov 28 00:05:13.108 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.108 INFO [stderr]     |
Nov 28 00:05:13.108 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:13.108 INFO [stderr] 
Nov 28 00:05:13.109 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:13.109 INFO [stderr]    --> src/lib.rs:321:5
Nov 28 00:05:13.109 INFO [stderr]     |
Nov 28 00:05:13.109 INFO [stderr] 321 |     output.write_all(&list_len_buf);
Nov 28 00:05:13.109 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.109 INFO [stderr]     |
Nov 28 00:05:13.109 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:13.110 INFO [stderr] 
Nov 28 00:05:13.110 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:13.110 INFO [stderr]    --> src/lib.rs:334:17
Nov 28 00:05:13.110 INFO [stderr]     |
Nov 28 00:05:13.110 INFO [stderr] 334 |                 output.write_all(&buf);
Nov 28 00:05:13.110 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.110 INFO [stderr]     |
Nov 28 00:05:13.111 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:13.111 INFO [stderr] 
Nov 28 00:05:13.111 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:05:13.111 INFO [stderr]    --> src/lib.rs:353:5
Nov 28 00:05:13.111 INFO [stderr]     |
Nov 28 00:05:13.111 INFO [stderr] 353 |     output.write_all(&buf);
Nov 28 00:05:13.112 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:05:13.112 INFO [stderr]     |
Nov 28 00:05:13.112 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:05:13.112 INFO [stderr] 
Nov 28 00:05:13.584 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
Nov 28 00:05:13.584 INFO [stderr] su: No module specific data is present
Nov 28 00:05:14.255 INFO running `"docker" "inspect" "6a70f410c51bda1b4734aaac0d7be2d62f806e091209d6089d93a2c6a0d1dee3"`
Nov 28 00:05:14.585 INFO running `"docker" "rm" "-f" "6a70f410c51bda1b4734aaac0d7be2d62f806e091209d6089d93a2c6a0d1dee3"`
Nov 28 00:05:14.809 INFO [stdout] 6a70f410c51bda1b4734aaac0d7be2d62f806e091209d6089d93a2c6a0d1dee3