Dec 01 08:16:23.546 INFO testing murphym18/huffman_code against 1.30.1 for beta-1.31-5
Dec 01 08:16:23.547 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 08:16:23.825 INFO [stdout] e9b3ef3b9d2a3b5e8cc8d19b2d352f5cd96b9de63c68ffca3f63f5aa48758091
Dec 01 08:16:23.825 INFO running `"docker" "start" "-a" "e9b3ef3b9d2a3b5e8cc8d19b2d352f5cd96b9de63c68ffca3f63f5aa48758091"`
Dec 01 08:16:24.617 INFO [stderr] usermod: no changes
Dec 01 08:16:24.659 INFO [stderr]    Compiling huffman_code v0.1.0 (/source)
Dec 01 08:16:24.983 INFO [stderr] warning: unused import: `std::io`
Dec 01 08:16:24.983 INFO [stderr]  --> src/lib.rs:1:5
Dec 01 08:16:24.983 INFO [stderr]   |
Dec 01 08:16:24.983 INFO [stderr] 1 | use std::io;
Dec 01 08:16:24.983 INFO [stderr]   |     ^^^^^^^
Dec 01 08:16:24.983 INFO [stderr]   |
Dec 01 08:16:24.983 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 08:16:24.983 INFO [stderr] 
Dec 01 08:16:24.983 INFO [stderr] warning: unused import: `Cursor`
Dec 01 08:16:24.983 INFO [stderr]  --> src/lib.rs:5:28
Dec 01 08:16:24.983 INFO [stderr]   |
Dec 01 08:16:24.983 INFO [stderr] 5 | use std::io::{Read, Write, Cursor};
Dec 01 08:16:24.983 INFO [stderr]   |                            ^^^^^^
Dec 01 08:16:24.983 INFO [stderr] 
Dec 01 08:16:25.128 INFO [stderr] warning: unused variable: `left`
Dec 01 08:16:25.128 INFO [stderr]    --> src/lib.rs:171:26
Dec 01 08:16:25.128 INFO [stderr]     |
Dec 01 08:16:25.128 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Dec 01 08:16:25.128 INFO [stderr]     |                          ^^^^ help: try ignoring the field: `left: _`
Dec 01 08:16:25.128 INFO [stderr]     |
Dec 01 08:16:25.129 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 01 08:16:25.129 INFO [stderr] 
Dec 01 08:16:25.129 INFO [stderr] warning: unused variable: `right`
Dec 01 08:16:25.129 INFO [stderr]    --> src/lib.rs:171:36
Dec 01 08:16:25.129 INFO [stderr]     |
Dec 01 08:16:25.129 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Dec 01 08:16:25.129 INFO [stderr]     |                                    ^^^^^ help: try ignoring the field: `right: _`
Dec 01 08:16:25.130 INFO [stderr] 
Dec 01 08:16:25.130 INFO [stderr] warning: unused variable: `value`
Dec 01 08:16:25.130 INFO [stderr]    --> src/lib.rs:172:22
Dec 01 08:16:25.130 INFO [stderr]     |
Dec 01 08:16:25.130 INFO [stderr] 172 |         Leaf {count, value} => count
Dec 01 08:16:25.130 INFO [stderr]     |                      ^^^^^ help: try ignoring the field: `value: _`
Dec 01 08:16:25.130 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:178:15
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 178 |         Node {count, ref left, ref right} => {
Dec 01 08:16:25.131 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:235:19
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 235 |             Leaf {count, value} => {
Dec 01 08:16:25.131 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:240:19
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 240 |             Node {count, ref left, ref right} => {
Dec 01 08:16:25.131 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `p`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:303:9
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 303 |     let p = 97 as u8;
Dec 01 08:16:25.131 INFO [stderr]     |         ^ help: consider using `_p` instead
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `value`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:346:26
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 346 |             Leaf {count, value} => size = size + count,
Dec 01 08:16:25.131 INFO [stderr]     |                          ^^^^^ help: try ignoring the field: `value: _`
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:395:15
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 395 |         Node {count, ref left, ref right} => {
Dec 01 08:16:25.131 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.131 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:25.131 INFO [stderr]    --> src/lib.rs:403:15
Dec 01 08:16:25.131 INFO [stderr]     |
Dec 01 08:16:25.131 INFO [stderr] 403 |         Leaf {count, value}  => {
Dec 01 08:16:25.131 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:25.131 INFO [stderr] 
Dec 01 08:16:25.143 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:25.143 INFO [stderr]    --> src/lib.rs:215:9
Dec 01 08:16:25.143 INFO [stderr]     |
Dec 01 08:16:25.143 INFO [stderr] 215 |     let mut tree = make_tree(table_vec);
Dec 01 08:16:25.143 INFO [stderr]     |         ----^^^^
Dec 01 08:16:25.143 INFO [stderr]     |         |
Dec 01 08:16:25.143 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:25.143 INFO [stderr]     |
Dec 01 08:16:25.143 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 01 08:16:25.143 INFO [stderr] 
Dec 01 08:16:25.153 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:25.153 INFO [stderr]    --> src/lib.rs:300:9
Dec 01 08:16:25.153 INFO [stderr]     |
Dec 01 08:16:25.153 INFO [stderr] 300 |     let mut tree = make_tree(v);
Dec 01 08:16:25.153 INFO [stderr]     |         ----^^^^
Dec 01 08:16:25.153 INFO [stderr]     |         |
Dec 01 08:16:25.153 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:25.153 INFO [stderr] 
Dec 01 08:16:25.153 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:25.153 INFO [stderr]    --> src/lib.rs:350:9
Dec 01 08:16:25.153 INFO [stderr]     |
Dec 01 08:16:25.153 INFO [stderr] 350 |     let mut buf: [u8; 8] = unsafe {
Dec 01 08:16:25.153 INFO [stderr]     |         ----^^^
Dec 01 08:16:25.153 INFO [stderr]     |         |
Dec 01 08:16:25.153 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:25.153 INFO [stderr] 
Dec 01 08:16:25.157 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:25.157 INFO [stderr]    --> src/lib.rs:388:9
Dec 01 08:16:25.157 INFO [stderr]     |
Dec 01 08:16:25.157 INFO [stderr] 388 |     let mut bits = BitString::new();
Dec 01 08:16:25.157 INFO [stderr]     |         ----^^^^
Dec 01 08:16:25.157 INFO [stderr]     |         |
Dec 01 08:16:25.157 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:25.157 INFO [stderr] 
Dec 01 08:16:25.157 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:25.157 INFO [stderr]    --> src/lib.rs:393:29
Dec 01 08:16:25.157 INFO [stderr]     |
Dec 01 08:16:25.157 INFO [stderr] 393 | fn traverse(current: &Tree, mut bits: BitString, table: &mut HashMap<u8, BitString>) {
Dec 01 08:16:25.157 INFO [stderr]     |                             ----^^^^
Dec 01 08:16:25.157 INFO [stderr]     |                             |
Dec 01 08:16:25.157 INFO [stderr]     |                             help: remove this `mut`
Dec 01 08:16:25.157 INFO [stderr] 
Dec 01 08:16:25.167 INFO [stderr] warning: function is never used: `byte_string`
Dec 01 08:16:25.167 INFO [stderr]    --> src/lib.rs:138:1
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr] 138 | fn byte_string(data: u8, num_bits: u8) -> String {
Dec 01 08:16:25.167 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 01 08:16:25.167 INFO [stderr] 
Dec 01 08:16:25.167 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:25.167 INFO [stderr]    --> src/lib.rs:104:9
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr] 104 |         self.output.write(&a);
Dec 01 08:16:25.167 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 01 08:16:25.167 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:25.167 INFO [stderr] 
Dec 01 08:16:25.167 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:25.167 INFO [stderr]    --> src/lib.rs:236:17
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr] 236 |                 output.write(&[value]);
Dec 01 08:16:25.167 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:25.167 INFO [stderr] 
Dec 01 08:16:25.167 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:25.167 INFO [stderr]    --> src/lib.rs:306:5
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.167 INFO [stderr] 306 |     f.seek(SeekFrom::Start(0));
Dec 01 08:16:25.167 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.167 INFO [stderr]     |
Dec 01 08:16:25.172 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:25.172 INFO [stderr] 
Dec 01 08:16:25.172 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:25.172 INFO [stderr]    --> src/lib.rs:321:5
Dec 01 08:16:25.172 INFO [stderr]     |
Dec 01 08:16:25.173 INFO [stderr] 321 |     output.write_all(&list_len_buf);
Dec 01 08:16:25.173 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.173 INFO [stderr]     |
Dec 01 08:16:25.173 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:25.173 INFO [stderr] 
Dec 01 08:16:25.173 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:25.173 INFO [stderr]    --> src/lib.rs:334:17
Dec 01 08:16:25.173 INFO [stderr]     |
Dec 01 08:16:25.173 INFO [stderr] 334 |                 output.write_all(&buf);
Dec 01 08:16:25.173 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.173 INFO [stderr]     |
Dec 01 08:16:25.173 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:25.173 INFO [stderr] 
Dec 01 08:16:25.173 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:25.173 INFO [stderr]    --> src/lib.rs:353:5
Dec 01 08:16:25.173 INFO [stderr]     |
Dec 01 08:16:25.173 INFO [stderr] 353 |     output.write_all(&buf);
Dec 01 08:16:25.173 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:25.173 INFO [stderr]     |
Dec 01 08:16:25.173 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:25.173 INFO [stderr] 
Dec 01 08:16:26.351 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
Dec 01 08:16:26.352 INFO [stderr] su: No module specific data is present
Dec 01 08:16:27.063 INFO running `"docker" "inspect" "e9b3ef3b9d2a3b5e8cc8d19b2d352f5cd96b9de63c68ffca3f63f5aa48758091"`
Dec 01 08:16:27.389 INFO running `"docker" "rm" "-f" "e9b3ef3b9d2a3b5e8cc8d19b2d352f5cd96b9de63c68ffca3f63f5aa48758091"`
Dec 01 08:16:27.603 INFO [stdout] e9b3ef3b9d2a3b5e8cc8d19b2d352f5cd96b9de63c68ffca3f63f5aa48758091
Dec 01 08:16:27.608 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 08:16:27.970 INFO [stdout] acdb9b10011bc06e83d8a076f33da2b1a70c5afb2c8fd1771ae42224b320cf38
Dec 01 08:16:27.973 INFO running `"docker" "start" "-a" "acdb9b10011bc06e83d8a076f33da2b1a70c5afb2c8fd1771ae42224b320cf38"`
Dec 01 08:16:28.848 INFO [stderr] usermod: no changes
Dec 01 08:16:28.887 INFO [stderr]    Compiling huffman_code v0.1.0 (/source)
Dec 01 08:16:29.342 INFO [stderr] warning: unused import: `std::io`
Dec 01 08:16:29.342 INFO [stderr]  --> src/lib.rs:1:5
Dec 01 08:16:29.342 INFO [stderr]   |
Dec 01 08:16:29.342 INFO [stderr] 1 | use std::io;
Dec 01 08:16:29.342 INFO [stderr]   |     ^^^^^^^
Dec 01 08:16:29.342 INFO [stderr]   |
Dec 01 08:16:29.342 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 08:16:29.342 INFO [stderr] 
Dec 01 08:16:29.342 INFO [stderr] warning: unused import: `Cursor`
Dec 01 08:16:29.342 INFO [stderr]  --> src/lib.rs:5:28
Dec 01 08:16:29.342 INFO [stderr]   |
Dec 01 08:16:29.343 INFO [stderr] 5 | use std::io::{Read, Write, Cursor};
Dec 01 08:16:29.343 INFO [stderr]   |                            ^^^^^^
Dec 01 08:16:29.343 INFO [stderr] 
Dec 01 08:16:29.715 INFO [stderr] warning: unused variable: `left`
Dec 01 08:16:29.715 INFO [stderr]    --> src/lib.rs:171:26
Dec 01 08:16:29.715 INFO [stderr]     |
Dec 01 08:16:29.715 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Dec 01 08:16:29.715 INFO [stderr]     |                          ^^^^ help: try ignoring the field: `left: _`
Dec 01 08:16:29.715 INFO [stderr]     |
Dec 01 08:16:29.715 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 01 08:16:29.715 INFO [stderr] 
Dec 01 08:16:29.715 INFO [stderr] warning: unused variable: `right`
Dec 01 08:16:29.715 INFO [stderr]    --> src/lib.rs:171:36
Dec 01 08:16:29.715 INFO [stderr]     |
Dec 01 08:16:29.715 INFO [stderr] 171 |         Node {count, ref left, ref right} => count,
Dec 01 08:16:29.715 INFO [stderr]     |                                    ^^^^^ help: try ignoring the field: `right: _`
Dec 01 08:16:29.715 INFO [stderr] 
Dec 01 08:16:29.715 INFO [stderr] warning: unused variable: `value`
Dec 01 08:16:29.715 INFO [stderr]    --> src/lib.rs:172:22
Dec 01 08:16:29.715 INFO [stderr]     |
Dec 01 08:16:29.715 INFO [stderr] 172 |         Leaf {count, value} => count
Dec 01 08:16:29.715 INFO [stderr]     |                      ^^^^^ help: try ignoring the field: `value: _`
Dec 01 08:16:29.715 INFO [stderr] 
Dec 01 08:16:29.715 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:29.715 INFO [stderr]    --> src/lib.rs:178:15
Dec 01 08:16:29.715 INFO [stderr]     |
Dec 01 08:16:29.715 INFO [stderr] 178 |         Node {count, ref left, ref right} => {
Dec 01 08:16:29.715 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:29.715 INFO [stderr] 
Dec 01 08:16:29.716 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:29.716 INFO [stderr]    --> src/lib.rs:235:19
Dec 01 08:16:29.716 INFO [stderr]     |
Dec 01 08:16:29.716 INFO [stderr] 235 |             Leaf {count, value} => {
Dec 01 08:16:29.716 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:29.716 INFO [stderr] 
Dec 01 08:16:29.716 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:29.716 INFO [stderr]    --> src/lib.rs:240:19
Dec 01 08:16:29.716 INFO [stderr]     |
Dec 01 08:16:29.716 INFO [stderr] 240 |             Node {count, ref left, ref right} => {
Dec 01 08:16:29.716 INFO [stderr]     |                   ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:29.716 INFO [stderr] 
Dec 01 08:16:29.716 INFO [stderr] warning: unused variable: `p`
Dec 01 08:16:29.716 INFO [stderr]    --> src/lib.rs:303:9
Dec 01 08:16:29.716 INFO [stderr]     |
Dec 01 08:16:29.717 INFO [stderr] 303 |     let p = 97 as u8;
Dec 01 08:16:29.717 INFO [stderr]     |         ^ help: consider using `_p` instead
Dec 01 08:16:29.717 INFO [stderr] 
Dec 01 08:16:29.717 INFO [stderr] warning: unused variable: `value`
Dec 01 08:16:29.717 INFO [stderr]    --> src/lib.rs:346:26
Dec 01 08:16:29.717 INFO [stderr]     |
Dec 01 08:16:29.717 INFO [stderr] 346 |             Leaf {count, value} => size = size + count,
Dec 01 08:16:29.717 INFO [stderr]     |                          ^^^^^ help: try ignoring the field: `value: _`
Dec 01 08:16:29.718 INFO [stderr] 
Dec 01 08:16:29.722 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:29.722 INFO [stderr]    --> src/lib.rs:395:15
Dec 01 08:16:29.722 INFO [stderr]     |
Dec 01 08:16:29.722 INFO [stderr] 395 |         Node {count, ref left, ref right} => {
Dec 01 08:16:29.722 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:29.722 INFO [stderr] 
Dec 01 08:16:29.722 INFO [stderr] warning: unused variable: `count`
Dec 01 08:16:29.722 INFO [stderr]    --> src/lib.rs:403:15
Dec 01 08:16:29.723 INFO [stderr]     |
Dec 01 08:16:29.723 INFO [stderr] 403 |         Leaf {count, value}  => {
Dec 01 08:16:29.723 INFO [stderr]     |               ^^^^^ help: try ignoring the field: `count: _`
Dec 01 08:16:29.723 INFO [stderr] 
Dec 01 08:16:29.755 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:29.755 INFO [stderr]    --> src/lib.rs:215:9
Dec 01 08:16:29.755 INFO [stderr]     |
Dec 01 08:16:29.755 INFO [stderr] 215 |     let mut tree = make_tree(table_vec);
Dec 01 08:16:29.755 INFO [stderr]     |         ----^^^^
Dec 01 08:16:29.756 INFO [stderr]     |         |
Dec 01 08:16:29.756 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:29.756 INFO [stderr]     |
Dec 01 08:16:29.756 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 01 08:16:29.756 INFO [stderr] 
Dec 01 08:16:29.771 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:29.771 INFO [stderr]    --> src/lib.rs:300:9
Dec 01 08:16:29.771 INFO [stderr]     |
Dec 01 08:16:29.771 INFO [stderr] 300 |     let mut tree = make_tree(v);
Dec 01 08:16:29.772 INFO [stderr]     |         ----^^^^
Dec 01 08:16:29.772 INFO [stderr]     |         |
Dec 01 08:16:29.772 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:29.772 INFO [stderr] 
Dec 01 08:16:29.772 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:29.772 INFO [stderr]    --> src/lib.rs:350:9
Dec 01 08:16:29.773 INFO [stderr]     |
Dec 01 08:16:29.773 INFO [stderr] 350 |     let mut buf: [u8; 8] = unsafe {
Dec 01 08:16:29.773 INFO [stderr]     |         ----^^^
Dec 01 08:16:29.773 INFO [stderr]     |         |
Dec 01 08:16:29.773 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:29.773 INFO [stderr] 
Dec 01 08:16:29.779 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:29.779 INFO [stderr]    --> src/lib.rs:388:9
Dec 01 08:16:29.779 INFO [stderr]     |
Dec 01 08:16:29.779 INFO [stderr] 388 |     let mut bits = BitString::new();
Dec 01 08:16:29.779 INFO [stderr]     |         ----^^^^
Dec 01 08:16:29.779 INFO [stderr]     |         |
Dec 01 08:16:29.779 INFO [stderr]     |         help: remove this `mut`
Dec 01 08:16:29.780 INFO [stderr] 
Dec 01 08:16:29.781 INFO [stderr] warning: variable does not need to be mutable
Dec 01 08:16:29.781 INFO [stderr]    --> src/lib.rs:393:29
Dec 01 08:16:29.781 INFO [stderr]     |
Dec 01 08:16:29.781 INFO [stderr] 393 | fn traverse(current: &Tree, mut bits: BitString, table: &mut HashMap<u8, BitString>) {
Dec 01 08:16:29.781 INFO [stderr]     |                             ----^^^^
Dec 01 08:16:29.782 INFO [stderr]     |                             |
Dec 01 08:16:29.782 INFO [stderr]     |                             help: remove this `mut`
Dec 01 08:16:29.782 INFO [stderr] 
Dec 01 08:16:29.791 INFO [stderr] warning: function is never used: `byte_string`
Dec 01 08:16:29.791 INFO [stderr]    --> src/lib.rs:138:1
Dec 01 08:16:29.791 INFO [stderr]     |
Dec 01 08:16:29.791 INFO [stderr] 138 | fn byte_string(data: u8, num_bits: u8) -> String {
Dec 01 08:16:29.791 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.792 INFO [stderr]     |
Dec 01 08:16:29.792 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 01 08:16:29.792 INFO [stderr] 
Dec 01 08:16:29.794 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:29.794 INFO [stderr]    --> src/lib.rs:104:9
Dec 01 08:16:29.794 INFO [stderr]     |
Dec 01 08:16:29.794 INFO [stderr] 104 |         self.output.write(&a);
Dec 01 08:16:29.794 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.794 INFO [stderr]     |
Dec 01 08:16:29.795 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 01 08:16:29.795 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:29.795 INFO [stderr] 
Dec 01 08:16:29.796 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:29.796 INFO [stderr]    --> src/lib.rs:236:17
Dec 01 08:16:29.796 INFO [stderr]     |
Dec 01 08:16:29.796 INFO [stderr] 236 |                 output.write(&[value]);
Dec 01 08:16:29.796 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.796 INFO [stderr]     |
Dec 01 08:16:29.797 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:29.797 INFO [stderr] 
Dec 01 08:16:29.797 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:29.798 INFO [stderr]    --> src/lib.rs:306:5
Dec 01 08:16:29.800 INFO [stderr]     |
Dec 01 08:16:29.801 INFO [stderr] 306 |     f.seek(SeekFrom::Start(0));
Dec 01 08:16:29.801 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.801 INFO [stderr]     |
Dec 01 08:16:29.801 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:29.801 INFO [stderr] 
Dec 01 08:16:29.802 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:29.802 INFO [stderr]    --> src/lib.rs:321:5
Dec 01 08:16:29.802 INFO [stderr]     |
Dec 01 08:16:29.802 INFO [stderr] 321 |     output.write_all(&list_len_buf);
Dec 01 08:16:29.802 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.802 INFO [stderr]     |
Dec 01 08:16:29.803 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:29.803 INFO [stderr] 
Dec 01 08:16:29.803 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:29.803 INFO [stderr]    --> src/lib.rs:334:17
Dec 01 08:16:29.803 INFO [stderr]     |
Dec 01 08:16:29.803 INFO [stderr] 334 |                 output.write_all(&buf);
Dec 01 08:16:29.804 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.804 INFO [stderr]     |
Dec 01 08:16:29.804 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:29.804 INFO [stderr] 
Dec 01 08:16:29.804 INFO [stderr] warning: unused `std::result::Result` which must be used
Dec 01 08:16:29.805 INFO [stderr]    --> src/lib.rs:353:5
Dec 01 08:16:29.805 INFO [stderr]     |
Dec 01 08:16:29.805 INFO [stderr] 353 |     output.write_all(&buf);
Dec 01 08:16:29.805 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 08:16:29.805 INFO [stderr]     |
Dec 01 08:16:29.805 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 08:16:29.805 INFO [stderr] 
Dec 01 08:16:30.458 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
Dec 01 08:16:30.461 INFO [stderr] su: No module specific data is present
Dec 01 08:16:31.436 INFO running `"docker" "inspect" "acdb9b10011bc06e83d8a076f33da2b1a70c5afb2c8fd1771ae42224b320cf38"`
Dec 01 08:16:31.723 INFO running `"docker" "rm" "-f" "acdb9b10011bc06e83d8a076f33da2b1a70c5afb2c8fd1771ae42224b320cf38"`
Dec 01 08:16:32.023 INFO [stdout] acdb9b10011bc06e83d8a076f33da2b1a70c5afb2c8fd1771ae42224b320cf38
Dec 01 08:16:32.031 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 08:16:32.439 INFO [stdout] 5cc6516543d18655d8521a80cdd6567a03f10dd30aa39f4a959e4150c9923a62
Dec 01 08:16:32.445 INFO running `"docker" "start" "-a" "5cc6516543d18655d8521a80cdd6567a03f10dd30aa39f4a959e4150c9923a62"`
Dec 01 08:16:33.682 INFO [stderr] usermod: no changes
Dec 01 08:16:33.731 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 01 08:16:33.739 INFO [stderr]      Running /target/debug/deps/huffman_code-e21106af9642dd6e
Dec 01 08:16:33.739 INFO [stderr]      Running /target/debug/deps/huffman_code-6db2379261fa90f2
Dec 01 08:16:33.739 INFO [stdout] 
Dec 01 08:16:33.739 INFO [stdout] running 0 tests
Dec 01 08:16:33.739 INFO [stdout] 
Dec 01 08:16:33.739 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 08:16:33.739 INFO [stdout] 
Dec 01 08:16:33.739 INFO [stdout] 
Dec 01 08:16:33.739 INFO [stdout] running 0 tests
Dec 01 08:16:33.739 INFO [stdout] 
Dec 01 08:16:33.739 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 08:16:33.739 INFO [stdout] 
Dec 01 08:16:33.739 INFO [stderr]    Doc-tests huffman_code
Dec 01 08:16:34.307 INFO [stdout] 
Dec 01 08:16:34.307 INFO [stdout] running 0 tests
Dec 01 08:16:34.307 INFO [stdout] 
Dec 01 08:16:34.307 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 08:16:34.307 INFO [stdout] 
Dec 01 08:16:34.319 INFO [stderr] su: No module specific data is present
Dec 01 08:16:35.424 INFO running `"docker" "inspect" "5cc6516543d18655d8521a80cdd6567a03f10dd30aa39f4a959e4150c9923a62"`
Dec 01 08:16:35.773 INFO running `"docker" "rm" "-f" "5cc6516543d18655d8521a80cdd6567a03f10dd30aa39f4a959e4150c9923a62"`
Dec 01 08:16:36.131 INFO [stdout] 5cc6516543d18655d8521a80cdd6567a03f10dd30aa39f4a959e4150c9923a62
