Dec 13 09:40:59.759 INFO testing murphym18/huffman_code against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550 Dec 13 09:40:59.759 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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"` Dec 13 09:41:00.091 INFO [stdout] 11d07aeed77e3fb4acf171ab77c86e8a4144b34973a889ce1ad6f8f7dafb09bc Dec 13 09:41:00.097 INFO running `"docker" "start" "-a" "11d07aeed77e3fb4acf171ab77c86e8a4144b34973a889ce1ad6f8f7dafb09bc"` Dec 13 09:41:00.696 INFO [stderr] usermod: no changes Dec 13 09:41:00.727 INFO [stderr] Compiling huffman_code v0.1.0 (/source) Dec 13 09:41:00.962 INFO [stderr] warning: unused import: `std::io` Dec 13 09:41:00.962 INFO [stderr] --> src/lib.rs:1:5 Dec 13 09:41:00.962 INFO [stderr] | Dec 13 09:41:00.962 INFO [stderr] 1 | use std::io; Dec 13 09:41:00.962 INFO [stderr] | ^^^^^^^ Dec 13 09:41:00.962 INFO [stderr] | Dec 13 09:41:00.962 INFO [stderr] = note: #[warn(unused_imports)] on by default Dec 13 09:41:00.962 INFO [stderr] Dec 13 09:41:00.972 INFO [stderr] warning: unused import: `Cursor` Dec 13 09:41:00.972 INFO [stderr] --> src/lib.rs:5:28 Dec 13 09:41:00.972 INFO [stderr] | Dec 13 09:41:00.972 INFO [stderr] 5 | use std::io::{Read, Write, Cursor}; Dec 13 09:41:00.972 INFO [stderr] | ^^^^^^ Dec 13 09:41:00.972 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `left` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:171:26 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 171 | Node {count, ref left, ref right} => count, Dec 13 09:41:01.107 INFO [stderr] | ^^^^ help: try ignoring the field: `left: _` Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `right` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:171:36 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 171 | Node {count, ref left, ref right} => count, Dec 13 09:41:01.107 INFO [stderr] | ^^^^^ help: try ignoring the field: `right: _` Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `value` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:172:22 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 172 | Leaf {count, value} => count Dec 13 09:41:01.107 INFO [stderr] | ^^^^^ help: try ignoring the field: `value: _` Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:178:15 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 178 | Node {count, ref left, ref right} => { Dec 13 09:41:01.107 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:235:19 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 235 | Leaf {count, value} => { Dec 13 09:41:01.107 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:240:19 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 240 | Node {count, ref left, ref right} => { Dec 13 09:41:01.107 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `p` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:303:9 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 303 | let p = 97 as u8; Dec 13 09:41:01.107 INFO [stderr] | ^ help: consider using `_p` instead Dec 13 09:41:01.107 INFO [stderr] Dec 13 09:41:01.107 INFO [stderr] warning: unused variable: `value` Dec 13 09:41:01.107 INFO [stderr] --> src/lib.rs:346:26 Dec 13 09:41:01.107 INFO [stderr] | Dec 13 09:41:01.107 INFO [stderr] 346 | Leaf {count, value} => size = size + count, Dec 13 09:41:01.108 INFO [stderr] | ^^^^^ help: try ignoring the field: `value: _` Dec 13 09:41:01.108 INFO [stderr] Dec 13 09:41:01.108 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:01.108 INFO [stderr] --> src/lib.rs:395:15 Dec 13 09:41:01.108 INFO [stderr] | Dec 13 09:41:01.108 INFO [stderr] 395 | Node {count, ref left, ref right} => { Dec 13 09:41:01.108 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:01.108 INFO [stderr] Dec 13 09:41:01.108 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:01.108 INFO [stderr] --> src/lib.rs:403:15 Dec 13 09:41:01.108 INFO [stderr] | Dec 13 09:41:01.108 INFO [stderr] 403 | Leaf {count, value} => { Dec 13 09:41:01.108 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:01.108 INFO [stderr] Dec 13 09:41:01.116 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:01.116 INFO [stderr] --> src/lib.rs:215:9 Dec 13 09:41:01.116 INFO [stderr] | Dec 13 09:41:01.116 INFO [stderr] 215 | let mut tree = make_tree(table_vec); Dec 13 09:41:01.116 INFO [stderr] | ----^^^^ Dec 13 09:41:01.116 INFO [stderr] | | Dec 13 09:41:01.116 INFO [stderr] | help: remove this `mut` Dec 13 09:41:01.116 INFO [stderr] | Dec 13 09:41:01.116 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 13 09:41:01.116 INFO [stderr] Dec 13 09:41:01.123 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:01.123 INFO [stderr] --> src/lib.rs:300:9 Dec 13 09:41:01.124 INFO [stderr] | Dec 13 09:41:01.124 INFO [stderr] 300 | let mut tree = make_tree(v); Dec 13 09:41:01.124 INFO [stderr] | ----^^^^ Dec 13 09:41:01.124 INFO [stderr] | | Dec 13 09:41:01.124 INFO [stderr] | help: remove this `mut` Dec 13 09:41:01.124 INFO [stderr] Dec 13 09:41:01.124 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:01.124 INFO [stderr] --> src/lib.rs:350:9 Dec 13 09:41:01.124 INFO [stderr] | Dec 13 09:41:01.124 INFO [stderr] 350 | let mut buf: [u8; 8] = unsafe { Dec 13 09:41:01.124 INFO [stderr] | ----^^^ Dec 13 09:41:01.124 INFO [stderr] | | Dec 13 09:41:01.124 INFO [stderr] | help: remove this `mut` Dec 13 09:41:01.124 INFO [stderr] Dec 13 09:41:01.126 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:01.126 INFO [stderr] --> src/lib.rs:388:9 Dec 13 09:41:01.126 INFO [stderr] | Dec 13 09:41:01.126 INFO [stderr] 388 | let mut bits = BitString::new(); Dec 13 09:41:01.126 INFO [stderr] | ----^^^^ Dec 13 09:41:01.126 INFO [stderr] | | Dec 13 09:41:01.126 INFO [stderr] | help: remove this `mut` Dec 13 09:41:01.126 INFO [stderr] Dec 13 09:41:01.127 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:01.127 INFO [stderr] --> src/lib.rs:393:29 Dec 13 09:41:01.127 INFO [stderr] | Dec 13 09:41:01.127 INFO [stderr] 393 | fn traverse(current: &Tree, mut bits: BitString, table: &mut HashMap) { Dec 13 09:41:01.127 INFO [stderr] | ----^^^^ Dec 13 09:41:01.127 INFO [stderr] | | Dec 13 09:41:01.127 INFO [stderr] | help: remove this `mut` Dec 13 09:41:01.127 INFO [stderr] Dec 13 09:41:01.133 INFO [stderr] warning: function is never used: `byte_string` Dec 13 09:41:01.133 INFO [stderr] --> src/lib.rs:138:1 Dec 13 09:41:01.133 INFO [stderr] | Dec 13 09:41:01.133 INFO [stderr] 138 | fn byte_string(data: u8, num_bits: u8) -> String { Dec 13 09:41:01.133 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.133 INFO [stderr] | Dec 13 09:41:01.133 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 13 09:41:01.133 INFO [stderr] Dec 13 09:41:01.134 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:01.134 INFO [stderr] --> src/lib.rs:104:9 Dec 13 09:41:01.134 INFO [stderr] | Dec 13 09:41:01.134 INFO [stderr] 104 | self.output.write(&a); Dec 13 09:41:01.134 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.134 INFO [stderr] | Dec 13 09:41:01.134 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 13 09:41:01.134 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:01.134 INFO [stderr] Dec 13 09:41:01.135 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:01.135 INFO [stderr] --> src/lib.rs:236:17 Dec 13 09:41:01.135 INFO [stderr] | Dec 13 09:41:01.135 INFO [stderr] 236 | output.write(&[value]); Dec 13 09:41:01.136 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:01.136 INFO [stderr] Dec 13 09:41:01.136 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:01.136 INFO [stderr] --> src/lib.rs:306:5 Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] 306 | f.seek(SeekFrom::Start(0)); Dec 13 09:41:01.136 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:01.136 INFO [stderr] Dec 13 09:41:01.136 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:01.136 INFO [stderr] --> src/lib.rs:321:5 Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] 321 | output.write_all(&list_len_buf); Dec 13 09:41:01.136 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:01.136 INFO [stderr] Dec 13 09:41:01.136 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:01.136 INFO [stderr] --> src/lib.rs:334:17 Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] 334 | output.write_all(&buf); Dec 13 09:41:01.136 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:01.136 INFO [stderr] Dec 13 09:41:01.136 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:01.136 INFO [stderr] --> src/lib.rs:353:5 Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] 353 | output.write_all(&buf); Dec 13 09:41:01.136 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:01.136 INFO [stderr] | Dec 13 09:41:01.136 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:01.136 INFO [stderr] Dec 13 09:41:02.121 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.40s Dec 13 09:41:02.123 INFO [stderr] su: No module specific data is present Dec 13 09:41:02.563 INFO running `"docker" "inspect" "11d07aeed77e3fb4acf171ab77c86e8a4144b34973a889ce1ad6f8f7dafb09bc"` Dec 13 09:41:02.763 INFO running `"docker" "rm" "-f" "11d07aeed77e3fb4acf171ab77c86e8a4144b34973a889ce1ad6f8f7dafb09bc"` Dec 13 09:41:02.883 INFO [stdout] 11d07aeed77e3fb4acf171ab77c86e8a4144b34973a889ce1ad6f8f7dafb09bc Dec 13 09:41:02.998 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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"` Dec 13 09:41:03.326 INFO [stdout] a783f98e0b591f368eba94b34fd45f58343d4ec18cae5d21c47b37a750218495 Dec 13 09:41:03.326 INFO running `"docker" "start" "-a" "a783f98e0b591f368eba94b34fd45f58343d4ec18cae5d21c47b37a750218495"` Dec 13 09:41:03.966 INFO [stderr] usermod: no changes Dec 13 09:41:04.045 INFO [stderr] Compiling huffman_code v0.1.0 (/source) Dec 13 09:41:04.272 INFO [stderr] warning: unused import: `std::io` Dec 13 09:41:04.272 INFO [stderr] --> src/lib.rs:1:5 Dec 13 09:41:04.272 INFO [stderr] | Dec 13 09:41:04.272 INFO [stderr] 1 | use std::io; Dec 13 09:41:04.272 INFO [stderr] | ^^^^^^^ Dec 13 09:41:04.272 INFO [stderr] | Dec 13 09:41:04.272 INFO [stderr] = note: #[warn(unused_imports)] on by default Dec 13 09:41:04.272 INFO [stderr] Dec 13 09:41:04.272 INFO [stderr] warning: unused import: `Cursor` Dec 13 09:41:04.272 INFO [stderr] --> src/lib.rs:5:28 Dec 13 09:41:04.272 INFO [stderr] | Dec 13 09:41:04.272 INFO [stderr] 5 | use std::io::{Read, Write, Cursor}; Dec 13 09:41:04.272 INFO [stderr] | ^^^^^^ Dec 13 09:41:04.272 INFO [stderr] Dec 13 09:41:04.442 INFO [stderr] warning: unused variable: `left` Dec 13 09:41:04.442 INFO [stderr] --> src/lib.rs:171:26 Dec 13 09:41:04.442 INFO [stderr] | Dec 13 09:41:04.442 INFO [stderr] 171 | Node {count, ref left, ref right} => count, Dec 13 09:41:04.442 INFO [stderr] | ^^^^ help: try ignoring the field: `left: _` Dec 13 09:41:04.442 INFO [stderr] | Dec 13 09:41:04.442 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 13 09:41:04.442 INFO [stderr] Dec 13 09:41:04.442 INFO [stderr] warning: unused variable: `right` Dec 13 09:41:04.442 INFO [stderr] --> src/lib.rs:171:36 Dec 13 09:41:04.442 INFO [stderr] | Dec 13 09:41:04.442 INFO [stderr] 171 | Node {count, ref left, ref right} => count, Dec 13 09:41:04.442 INFO [stderr] | ^^^^^ help: try ignoring the field: `right: _` Dec 13 09:41:04.442 INFO [stderr] Dec 13 09:41:04.442 INFO [stderr] warning: unused variable: `value` Dec 13 09:41:04.442 INFO [stderr] --> src/lib.rs:172:22 Dec 13 09:41:04.442 INFO [stderr] | Dec 13 09:41:04.442 INFO [stderr] 172 | Leaf {count, value} => count Dec 13 09:41:04.442 INFO [stderr] | ^^^^^ help: try ignoring the field: `value: _` Dec 13 09:41:04.442 INFO [stderr] Dec 13 09:41:04.442 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:04.442 INFO [stderr] --> src/lib.rs:178:15 Dec 13 09:41:04.442 INFO [stderr] | Dec 13 09:41:04.442 INFO [stderr] 178 | Node {count, ref left, ref right} => { Dec 13 09:41:04.442 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:04.442 INFO [stderr] Dec 13 09:41:04.443 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:04.443 INFO [stderr] --> src/lib.rs:235:19 Dec 13 09:41:04.443 INFO [stderr] | Dec 13 09:41:04.443 INFO [stderr] 235 | Leaf {count, value} => { Dec 13 09:41:04.443 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:04.443 INFO [stderr] Dec 13 09:41:04.443 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:04.443 INFO [stderr] --> src/lib.rs:240:19 Dec 13 09:41:04.443 INFO [stderr] | Dec 13 09:41:04.443 INFO [stderr] 240 | Node {count, ref left, ref right} => { Dec 13 09:41:04.443 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:04.443 INFO [stderr] Dec 13 09:41:04.443 INFO [stderr] warning: unused variable: `p` Dec 13 09:41:04.443 INFO [stderr] --> src/lib.rs:303:9 Dec 13 09:41:04.443 INFO [stderr] | Dec 13 09:41:04.443 INFO [stderr] 303 | let p = 97 as u8; Dec 13 09:41:04.443 INFO [stderr] | ^ help: consider using `_p` instead Dec 13 09:41:04.443 INFO [stderr] Dec 13 09:41:04.443 INFO [stderr] warning: unused variable: `value` Dec 13 09:41:04.443 INFO [stderr] --> src/lib.rs:346:26 Dec 13 09:41:04.443 INFO [stderr] | Dec 13 09:41:04.443 INFO [stderr] 346 | Leaf {count, value} => size = size + count, Dec 13 09:41:04.443 INFO [stderr] | ^^^^^ help: try ignoring the field: `value: _` Dec 13 09:41:04.443 INFO [stderr] Dec 13 09:41:04.443 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:04.443 INFO [stderr] --> src/lib.rs:395:15 Dec 13 09:41:04.443 INFO [stderr] | Dec 13 09:41:04.443 INFO [stderr] 395 | Node {count, ref left, ref right} => { Dec 13 09:41:04.443 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:04.443 INFO [stderr] Dec 13 09:41:04.447 INFO [stderr] warning: unused variable: `count` Dec 13 09:41:04.447 INFO [stderr] --> src/lib.rs:403:15 Dec 13 09:41:04.447 INFO [stderr] | Dec 13 09:41:04.447 INFO [stderr] 403 | Leaf {count, value} => { Dec 13 09:41:04.447 INFO [stderr] | ^^^^^ help: try ignoring the field: `count: _` Dec 13 09:41:04.447 INFO [stderr] Dec 13 09:41:04.460 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:04.460 INFO [stderr] --> src/lib.rs:215:9 Dec 13 09:41:04.460 INFO [stderr] | Dec 13 09:41:04.460 INFO [stderr] 215 | let mut tree = make_tree(table_vec); Dec 13 09:41:04.460 INFO [stderr] | ----^^^^ Dec 13 09:41:04.460 INFO [stderr] | | Dec 13 09:41:04.460 INFO [stderr] | help: remove this `mut` Dec 13 09:41:04.460 INFO [stderr] | Dec 13 09:41:04.460 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 13 09:41:04.460 INFO [stderr] Dec 13 09:41:04.467 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:04.467 INFO [stderr] --> src/lib.rs:300:9 Dec 13 09:41:04.467 INFO [stderr] | Dec 13 09:41:04.467 INFO [stderr] 300 | let mut tree = make_tree(v); Dec 13 09:41:04.467 INFO [stderr] | ----^^^^ Dec 13 09:41:04.467 INFO [stderr] | | Dec 13 09:41:04.467 INFO [stderr] | help: remove this `mut` Dec 13 09:41:04.467 INFO [stderr] Dec 13 09:41:04.467 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:04.467 INFO [stderr] --> src/lib.rs:350:9 Dec 13 09:41:04.467 INFO [stderr] | Dec 13 09:41:04.467 INFO [stderr] 350 | let mut buf: [u8; 8] = unsafe { Dec 13 09:41:04.467 INFO [stderr] | ----^^^ Dec 13 09:41:04.467 INFO [stderr] | | Dec 13 09:41:04.467 INFO [stderr] | help: remove this `mut` Dec 13 09:41:04.467 INFO [stderr] Dec 13 09:41:04.468 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:04.468 INFO [stderr] --> src/lib.rs:388:9 Dec 13 09:41:04.468 INFO [stderr] | Dec 13 09:41:04.468 INFO [stderr] 388 | let mut bits = BitString::new(); Dec 13 09:41:04.468 INFO [stderr] | ----^^^^ Dec 13 09:41:04.468 INFO [stderr] | | Dec 13 09:41:04.468 INFO [stderr] | help: remove this `mut` Dec 13 09:41:04.468 INFO [stderr] Dec 13 09:41:04.470 INFO [stderr] warning: variable does not need to be mutable Dec 13 09:41:04.470 INFO [stderr] --> src/lib.rs:393:29 Dec 13 09:41:04.470 INFO [stderr] | Dec 13 09:41:04.470 INFO [stderr] 393 | fn traverse(current: &Tree, mut bits: BitString, table: &mut HashMap) { Dec 13 09:41:04.470 INFO [stderr] | ----^^^^ Dec 13 09:41:04.470 INFO [stderr] | | Dec 13 09:41:04.470 INFO [stderr] | help: remove this `mut` Dec 13 09:41:04.470 INFO [stderr] Dec 13 09:41:04.478 INFO [stderr] warning: function is never used: `byte_string` Dec 13 09:41:04.478 INFO [stderr] --> src/lib.rs:138:1 Dec 13 09:41:04.478 INFO [stderr] | Dec 13 09:41:04.478 INFO [stderr] 138 | fn byte_string(data: u8, num_bits: u8) -> String { Dec 13 09:41:04.478 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.478 INFO [stderr] | Dec 13 09:41:04.478 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 13 09:41:04.478 INFO [stderr] Dec 13 09:41:04.480 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:04.480 INFO [stderr] --> src/lib.rs:104:9 Dec 13 09:41:04.480 INFO [stderr] | Dec 13 09:41:04.480 INFO [stderr] 104 | self.output.write(&a); Dec 13 09:41:04.480 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.480 INFO [stderr] | Dec 13 09:41:04.480 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 13 09:41:04.480 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:04.480 INFO [stderr] Dec 13 09:41:04.483 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:04.483 INFO [stderr] --> src/lib.rs:236:17 Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] 236 | output.write(&[value]); Dec 13 09:41:04.483 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:04.483 INFO [stderr] Dec 13 09:41:04.483 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:04.483 INFO [stderr] --> src/lib.rs:306:5 Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] 306 | f.seek(SeekFrom::Start(0)); Dec 13 09:41:04.483 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:04.483 INFO [stderr] Dec 13 09:41:04.483 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:04.483 INFO [stderr] --> src/lib.rs:321:5 Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] 321 | output.write_all(&list_len_buf); Dec 13 09:41:04.483 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:04.483 INFO [stderr] Dec 13 09:41:04.483 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:04.483 INFO [stderr] --> src/lib.rs:334:17 Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] 334 | output.write_all(&buf); Dec 13 09:41:04.483 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:04.483 INFO [stderr] Dec 13 09:41:04.483 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 13 09:41:04.483 INFO [stderr] --> src/lib.rs:353:5 Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] 353 | output.write_all(&buf); Dec 13 09:41:04.483 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 13 09:41:04.483 INFO [stderr] | Dec 13 09:41:04.483 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 13 09:41:04.483 INFO [stderr] Dec 13 09:41:04.786 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.79s Dec 13 09:41:04.786 INFO [stderr] su: No module specific data is present Dec 13 09:41:05.181 INFO running `"docker" "inspect" "a783f98e0b591f368eba94b34fd45f58343d4ec18cae5d21c47b37a750218495"` Dec 13 09:41:05.424 INFO running `"docker" "rm" "-f" "a783f98e0b591f368eba94b34fd45f58343d4ec18cae5d21c47b37a750218495"` Dec 13 09:41:05.705 INFO [stdout] a783f98e0b591f368eba94b34fd45f58343d4ec18cae5d21c47b37a750218495 Dec 13 09:41:05.707 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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"` Dec 13 09:41:06.119 INFO [stdout] 203feefefbe81455779ef3690dd83f31ec8ae4f95f180190915eae16158ef10f Dec 13 09:41:06.121 INFO running `"docker" "start" "-a" "203feefefbe81455779ef3690dd83f31ec8ae4f95f180190915eae16158ef10f"` Dec 13 09:41:07.126 INFO [stderr] usermod: no changes Dec 13 09:41:07.185 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s Dec 13 09:41:07.187 INFO [stderr] Running /target/debug/deps/huffman_code-c948ec2664a01916 Dec 13 09:41:07.187 INFO [stdout] Dec 13 09:41:07.187 INFO [stdout] running 0 tests Dec 13 09:41:07.187 INFO [stdout] Dec 13 09:41:07.187 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 13 09:41:07.187 INFO [stdout] Dec 13 09:41:07.187 INFO [stderr] Running /target/debug/deps/huffman_code-7ff71f6d317dcce3 Dec 13 09:41:07.192 INFO [stdout] Dec 13 09:41:07.192 INFO [stdout] running 0 tests Dec 13 09:41:07.192 INFO [stdout] Dec 13 09:41:07.192 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 13 09:41:07.192 INFO [stdout] Dec 13 09:41:07.193 INFO [stderr] Doc-tests huffman_code Dec 13 09:41:07.607 INFO [stdout] Dec 13 09:41:07.607 INFO [stdout] running 0 tests Dec 13 09:41:07.607 INFO [stdout] Dec 13 09:41:07.607 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 13 09:41:07.607 INFO [stdout] Dec 13 09:41:07.611 INFO [stderr] su: No module specific data is present Dec 13 09:41:08.205 INFO running `"docker" "inspect" "203feefefbe81455779ef3690dd83f31ec8ae4f95f180190915eae16158ef10f"` Dec 13 09:41:08.481 INFO running `"docker" "rm" "-f" "203feefefbe81455779ef3690dd83f31ec8ae4f95f180190915eae16158ef10f"` Dec 13 09:41:08.919 INFO [stdout] 203feefefbe81455779ef3690dd83f31ec8ae4f95f180190915eae16158ef10f