[INFO] cloning repository https://github.com/gorgeousDev/huff_compressor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gorgeousDev/huff_compressor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgorgeousDev%2Fhuff_compressor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgorgeousDev%2Fhuff_compressor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 882d697d4ff77935b2f61e0750db73565110a2a2
[INFO] checking gorgeousDev/huff_compressor against e3d12f3322cb00126b2208c6b9df3ac4467951f5 for pr-159706
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgorgeousDev%2Fhuff_compressor" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gorgeousDev/huff_compressor
[INFO] finished tweaking git repo https://github.com/gorgeousDev/huff_compressor
[INFO] tweaked toml for git repo https://github.com/gorgeousDev/huff_compressor written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gorgeousDev/huff_compressor on toolchain e3d12f3322cb00126b2208c6b9df3ac4467951f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gorgeousDev/huff_compressor 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" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc
[INFO] running `Command { std: "docker" "start" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc" "/opt/rustwide/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc" "/opt/rustwide/cargo-home/bin/cargo" "+e3d12f3322cb00126b2208c6b9df3ac4467951f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking colored v3.1.1
[INFO] [stderr]     Checking compressor_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `huff_internal_node::HuffInternalNode` and `huff_leaf_node::HuffLeafNode`
[INFO] [stdout]  --> src/logic.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 |     huff_base_node::HuffBaseNode, huff_internal_node::HuffInternalNode,
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     huff_leaf_node::HuffLeafNode, huff_tree::HuffTree,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Formatter`, and `Result as FmtResult`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_base_node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Formatter, Result as FmtResult};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Formatter`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_leaf_node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Formatter`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_internal_node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Formatter`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_tree.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `huff_internal_node::HuffInternalNode` and `huff_leaf_node::HuffLeafNode`
[INFO] [stdout]  --> src/logic.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 |     huff_base_node::HuffBaseNode, huff_internal_node::HuffInternalNode,
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     huff_leaf_node::HuffLeafNode, huff_tree::HuffTree,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Formatter`, and `Result as FmtResult`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_base_node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Formatter, Result as FmtResult};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Formatter`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_leaf_node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Formatter`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_internal_node.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Formatter`
[INFO] [stdout]  --> src/logic/encoding_binary_tree/huff_tree.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_right_child` is never used
[INFO] [stdout]   --> src/logic/encoding_binary_tree/huff_base_node.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub trait  HuffBaseNode {
[INFO] [stdout]    |            ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn is_right_child(&self) -> bool { false }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_from_prepared_root` is never used
[INFO] [stdout]   --> src/logic/encoding_binary_tree/huff_tree.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl HuffTree {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn new_from_prepared_root(root: Box<dyn HuffBaseNode>) -> HuffTree {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_right_child` is never used
[INFO] [stdout]   --> src/logic/encoding_binary_tree/huff_base_node.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub trait  HuffBaseNode {
[INFO] [stdout]    |            ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn is_right_child(&self) -> bool { false }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_from_prepared_root` is never used
[INFO] [stdout]   --> src/logic/encoding_binary_tree/huff_tree.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl HuffTree {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn new_from_prepared_root(root: Box<dyn HuffBaseNode>) -> HuffTree {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc", kill_on_drop: false }`
[INFO] [stdout] 30642cc88bafc4d3d03b6dc30d30282586b694dcff7831cc5ffc5e47ee8ce3bc
