[INFO] cloning repository https://github.com/danielementary/rgzip
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielementary/rgzip" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielementary%2Frgzip", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielementary%2Frgzip'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e18b2a497294c6f77a27ae267ec977f074e73313
[INFO] checking danielementary/rgzip against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielementary%2Frgzip" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danielementary/rgzip on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/danielementary/rgzip
[INFO] finished tweaking git repo https://github.com/danielementary/rgzip
[INFO] tweaked toml for git repo https://github.com/danielementary/rgzip written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/danielementary/rgzip already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2c55992cfa035a5fff8bc660886469227cc8b7576f6103afaf25e243c3aeb1d
[INFO] running `Command { std: "docker" "start" "-a" "b2c55992cfa035a5fff8bc660886469227cc8b7576f6103afaf25e243c3aeb1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2c55992cfa035a5fff8bc660886469227cc8b7576f6103afaf25e243c3aeb1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c55992cfa035a5fff8bc660886469227cc8b7576f6103afaf25e243c3aeb1d", kill_on_drop: false }`
[INFO] [stdout] b2c55992cfa035a5fff8bc660886469227cc8b7576f6103afaf25e243c3aeb1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e99ecd68ad80747ab3aac8b05c0dcd4f120ae20ad0d751ebe46151070f158aae
[INFO] running `Command { std: "docker" "start" "-a" "e99ecd68ad80747ab3aac8b05c0dcd4f120ae20ad0d751ebe46151070f158aae", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rgzip v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stdout] warning: field is never read: `symbol_length_pairs`
[INFO] [stdout]  --> src/huffman/huffman_lut.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     symbol_length_pairs: Vec<SymbolLengthPair>, // these pairs order defines lexicograpical order of codes
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lookup_table`
[INFO] [stdout]  --> src/huffman/huffman_lut.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     lookup_table: BTreeMap<SymbolType, Bits>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_huffman_lut`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn build_huffman_lut(symbol_length_pairs: Vec<SymbolLengthPair>) -> HuffmanLUT {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs_helper`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn build_symbol_length_pairs_helper(&self, length: i32, result: &mut Vec<SymbolLengthPair>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs`
[INFO] [stdout]    --> src/huffman/huffman_node.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn build_symbol_length_pairs(&self) -> Vec<SymbolLengthPair> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `symbol_length_pairs_RFC_1951` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn symbol_length_pairs_RFC_1951() -> Vec<SymbolLengthPair> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pairs_rfc_1951`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_A` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let symbol_length_pair_A = SymbolLengthPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_B` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let symbol_length_pair_B = SymbolLengthPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_C` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let symbol_length_pair_C = SymbolLengthPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `symbol_length_pair_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_D` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let symbol_length_pair_D = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_E` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let symbol_length_pair_E = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_F` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let symbol_length_pair_F = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `symbol_length_pair_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_G` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let symbol_length_pair_G = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_H` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let symbol_length_pair_H = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lengths_counts_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn lengths_counts_RFC_1951() -> BTreeMap<i32, i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `lengths_counts_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lengths_codes_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn lengths_codes_RFC_1951() -> BTreeMap<i32, i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `lengths_codes_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lookup_table_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn lookup_table_RFC_1951() -> BTreeMap<SymbolType, Bits> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `lookup_table_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_lengths_counts_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn build_lengths_counts_RFC_1951() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `build_lengths_counts_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_lengths_codes_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:190:8
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn build_lengths_codes_RFC_1951() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `build_lengths_codes_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_lookup_table_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:197:8
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn build_lookup_table_RFC_1951() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `build_lookup_table_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_weight_pair_A` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_tree.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let symbol_weight_pair_A = SymbolWeightPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_weight_pair_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_weight_pair_B` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_tree.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let symbol_weight_pair_B = SymbolWeightPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_weight_pair_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_weight_pair_C` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_tree.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let symbol_weight_pair_C = SymbolWeightPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `symbol_weight_pair_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HuffmanLUT`
[INFO] [stdout]  --> src/huffman/huffman_lut.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct HuffmanLUT {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_lengths_counts`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn build_lengths_counts(symbol_length_pairs: &Vec<SymbolLengthPair>) -> BTreeMap<i32, i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_lengths_codes`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn build_lengths_codes(lengths_counts: &BTreeMap<i32, i32>) -> BTreeMap<i32, i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_lookup_table`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn build_lookup_table(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_huffman_lut`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn build_huffman_lut(symbol_length_pairs: Vec<SymbolLengthPair>) -> HuffmanLUT {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Inode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Inode(Inode),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lnode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Lnode(Lnode),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Decode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Decode<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn decode<'a>(&self, bits: &'a mut Bits) -> Decode<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs_helper`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn build_symbol_length_pairs_helper(&self, length: i32, result: &mut Vec<SymbolLengthPair>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs`
[INFO] [stdout]    --> src/huffman/huffman_node.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn build_symbol_length_pairs(&self) -> Vec<SymbolLengthPair> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HuffmanTree`
[INFO] [stdout]  --> src/huffman/huffman_tree.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct HuffmanTree {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_huffman_tree`
[INFO] [stdout]   --> src/huffman/huffman_tree.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn build_huffman_tree(symbol_weight_pairs: Vec<SymbolWeightPair>) -> HuffmanTree {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Zero`
[INFO] [stdout]  --> src/huffman.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Zero,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `One`
[INFO] [stdout]   --> src/huffman.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     One,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Bits`
[INFO] [stdout]   --> src/huffman.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | type Bits = VecDeque<Bit>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SymbolLengthPair`
[INFO] [stdout]   --> src/huffman.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct SymbolLengthPair {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/configuration.rs (5 fixes)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking rgzip v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: struct is never constructed: `HuffmanLUT`
[INFO] [stdout]  --> src/huffman/huffman_lut.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct HuffmanLUT {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_lengths_counts`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn build_lengths_counts(symbol_length_pairs: &Vec<SymbolLengthPair>) -> BTreeMap<i32, i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_lengths_codes`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn build_lengths_codes(lengths_counts: &BTreeMap<i32, i32>) -> BTreeMap<i32, i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_lookup_table`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn build_lookup_table(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_huffman_lut`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn build_huffman_lut(symbol_length_pairs: Vec<SymbolLengthPair>) -> HuffmanLUT {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Inode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Inode(Inode),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lnode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Lnode(Lnode),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Decode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Decode<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decode`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn decode<'a>(&self, bits: &'a mut Bits) -> Decode<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs_helper`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn build_symbol_length_pairs_helper(&self, length: i32, result: &mut Vec<SymbolLengthPair>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs`
[INFO] [stdout]    --> src/huffman/huffman_node.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn build_symbol_length_pairs(&self) -> Vec<SymbolLengthPair> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HuffmanTree`
[INFO] [stdout]  --> src/huffman/huffman_tree.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct HuffmanTree {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_huffman_tree`
[INFO] [stdout]   --> src/huffman/huffman_tree.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn build_huffman_tree(symbol_weight_pairs: Vec<SymbolWeightPair>) -> HuffmanTree {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Zero`
[INFO] [stdout]  --> src/huffman.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Zero,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `One`
[INFO] [stdout]   --> src/huffman.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     One,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Bits`
[INFO] [stdout]   --> src/huffman.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | type Bits = VecDeque<Bit>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SymbolLengthPair`
[INFO] [stdout]   --> src/huffman.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct SymbolLengthPair {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `symbol_length_pairs`
[INFO] [stdout]  --> src/huffman/huffman_lut.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     symbol_length_pairs: Vec<SymbolLengthPair>, // these pairs order defines lexicograpical order of codes
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lookup_table`
[INFO] [stdout]  --> src/huffman/huffman_lut.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     lookup_table: BTreeMap<SymbolType, Bits>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_huffman_lut`
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn build_huffman_lut(symbol_length_pairs: Vec<SymbolLengthPair>) -> HuffmanLUT {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs_helper`
[INFO] [stdout]   --> src/huffman/huffman_node.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn build_symbol_length_pairs_helper(&self, length: i32, result: &mut Vec<SymbolLengthPair>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_symbol_length_pairs`
[INFO] [stdout]    --> src/huffman/huffman_node.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn build_symbol_length_pairs(&self) -> Vec<SymbolLengthPair> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `symbol_length_pairs_RFC_1951` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn symbol_length_pairs_RFC_1951() -> Vec<SymbolLengthPair> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pairs_rfc_1951`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_A` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let symbol_length_pair_A = SymbolLengthPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_B` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let symbol_length_pair_B = SymbolLengthPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_C` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_lut.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let symbol_length_pair_C = SymbolLengthPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `symbol_length_pair_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_D` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let symbol_length_pair_D = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_E` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let symbol_length_pair_E = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_F` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let symbol_length_pair_F = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `symbol_length_pair_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_G` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let symbol_length_pair_G = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_g`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_length_pair_H` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let symbol_length_pair_H = SymbolLengthPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_length_pair_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lengths_counts_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn lengths_counts_RFC_1951() -> BTreeMap<i32, i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `lengths_counts_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lengths_codes_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn lengths_codes_RFC_1951() -> BTreeMap<i32, i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `lengths_codes_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lookup_table_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn lookup_table_RFC_1951() -> BTreeMap<SymbolType, Bits> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `lookup_table_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_lengths_counts_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn build_lengths_counts_RFC_1951() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `build_lengths_counts_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_lengths_codes_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:190:8
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn build_lengths_codes_RFC_1951() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `build_lengths_codes_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_lookup_table_RFC_1951` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_lut.rs:197:8
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn build_lookup_table_RFC_1951() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `build_lookup_table_rfc_1951`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_weight_pair_A` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_tree.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let symbol_weight_pair_A = SymbolWeightPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_weight_pair_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_weight_pair_B` should have a snake case name
[INFO] [stdout]   --> src/huffman/huffman_tree.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let symbol_weight_pair_B = SymbolWeightPair {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `symbol_weight_pair_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `symbol_weight_pair_C` should have a snake case name
[INFO] [stdout]    --> src/huffman/huffman_tree.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let symbol_weight_pair_C = SymbolWeightPair {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `symbol_weight_pair_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "e99ecd68ad80747ab3aac8b05c0dcd4f120ae20ad0d751ebe46151070f158aae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e99ecd68ad80747ab3aac8b05c0dcd4f120ae20ad0d751ebe46151070f158aae", kill_on_drop: false }`
[INFO] [stdout] e99ecd68ad80747ab3aac8b05c0dcd4f120ae20ad0d751ebe46151070f158aae