[INFO] cloning repository https://github.com/bpol9/rust_huffman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bpol9/rust_huffman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2efef9d84e969d27b1b14468556b9cee72897145
[INFO] checking bpol9/rust_huffman against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpol9%2Frust_huffman" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bpol9/rust_huffman
[INFO] finished tweaking git repo https://github.com/bpol9/rust_huffman
[INFO] tweaked toml for git repo https://github.com/bpol9/rust_huffman written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bpol9/rust_huffman on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bpol9/rust_huffman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3896d597fa32bd1c0469b62b7f05548c5282428e9ec2097c67237979b975798f
[INFO] running `Command { std: "docker" "start" "-a" "3896d597fa32bd1c0469b62b7f05548c5282428e9ec2097c67237979b975798f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3896d597fa32bd1c0469b62b7f05548c5282428e9ec2097c67237979b975798f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3896d597fa32bd1c0469b62b7f05548c5282428e9ec2097c67237979b975798f", kill_on_drop: false }`
[INFO] [stdout] 3896d597fa32bd1c0469b62b7f05548c5282428e9ec2097c67237979b975798f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a09593e499dcaf667722ea007040fc840097012f41dd26c92b501bf672916821
[INFO] running `Command { std: "docker" "start" "-a" "a09593e499dcaf667722ea007040fc840097012f41dd26c92b501bf672916821", kill_on_drop: false }`
[INFO] [stderr]     Checking huffman_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `HuffmanEncoding` is never constructed
[INFO] [stdout]  --> src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct HuffmanEncoding {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HuffmanNode` is never constructed
[INFO] [stdout]   --> src/main.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct HuffmanNode {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HuffmanUnitCode` is never constructed
[INFO] [stdout]   --> src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct HuffmanUnitCode {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/main.rs:25:8
[INFO] [stdout]     |
[INFO] [stdout] 23  | impl HuffmanEncoding {
[INFO] [stdout]     | -------------------- methods in this implementation
[INFO] [stdout] 24  |
[INFO] [stdout] 25  |     fn add_value(&mut self, value: u64, number_of_bits: u64) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42  |     fn encode(&mut self, text: &String) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |     fn get_huffman_encoding(&self, text: &String) -> HashMap<char, HuffmanUnitCode> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63  |     fn get_encoding_from_huffman_tree(&self, tree: Rc<HuffmanNode>) -> HashMap<char, HuffmanUnitCode> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73  |     fn dfs_huffman_tree(&self, node: Rc<HuffmanNode>, curr_unit_code: HuffmanUnitCode, result: &mut HashMap<char, HuffmanUnitCode>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98  |     fn construct_huffman_tree(&self, text: &String) -> Rc<HuffmanNode> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn compute_frequencies(&self, text: &String) -> HashMap<char, u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 127 |     fn get_huffman_leaves(&self, text: &String) -> Vec<HuffmanNode> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 141 |     fn decode(&self) -> String {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 177 |     fn reverse_encoding_map(&self, map: &HashMap<char, HuffmanUnitCode>) -> HashMap<HuffmanUnitCode, char> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_bit_zero`, `add_bit_one`, and `add_msb` are never used
[INFO] [stdout]    --> src/main.rs:188:8
[INFO] [stdout]     |
[INFO] [stdout] 187 | impl HuffmanUnitCode {
[INFO] [stdout]     | -------------------- methods in this implementation
[INFO] [stdout] 188 |     fn add_bit_zero(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |     fn add_bit_one(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 198 |     fn add_msb(&mut self, bit: u64) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_smallest` is never used
[INFO] [stdout]    --> src/main.rs:208:4
[INFO] [stdout]     |
[INFO] [stdout] 208 | fn take_smallest(first: &mut Vec<HuffmanNode>, second: &mut Vec<HuffmanNode>) -> HuffmanNode {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quick_sort` is never used
[INFO] [stdout]    --> src/main.rs:221:4
[INFO] [stdout]     |
[INFO] [stdout] 221 | fn quick_sort<T,F>(v: &mut [T], f: &F)
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `partition` is never used
[INFO] [stdout]    --> src/main.rs:232:4
[INFO] [stdout]     |
[INFO] [stdout] 232 | fn partition<T,F>(v: &mut [T], f: &F) -> usize
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "a09593e499dcaf667722ea007040fc840097012f41dd26c92b501bf672916821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09593e499dcaf667722ea007040fc840097012f41dd26c92b501bf672916821", kill_on_drop: false }`
[INFO] [stdout] a09593e499dcaf667722ea007040fc840097012f41dd26c92b501bf672916821
