[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter/objects/info: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/sendemail-validate.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter/hooks/sendemail-validate.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/fsmonitor-watchman.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter/hooks/fsmonitor-watchman.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 5)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 6)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 7)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 8)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 9)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 10)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 11)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 12)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 13)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 14)
[INFO] cloning repository https://github.com/ganemaruko/scheme_converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ganemaruko/scheme_converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d423bba05da174e12a84d68a6b930f496aa93099
[INFO] checking ganemaruko/scheme_converter against master#01706e1a34c87656fcbfce198608f4cd2ac6461a for pr-135272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fganemaruko%2Fscheme_converter" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ganemaruko/scheme_converter on toolchain 01706e1a34c87656fcbfce198608f4cd2ac6461a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/ganemaruko/scheme_converter
[INFO] finished tweaking git repo https://github.com/ganemaruko/scheme_converter
[INFO] tweaked toml for git repo https://github.com/ganemaruko/scheme_converter written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ganemaruko/scheme_converter 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" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf7851df4aeeb89f72d48c23b6c34ddcb232a6e7c43a10eb473bc06f94fe5d50
[INFO] running `Command { std: "docker" "start" "-a" "cf7851df4aeeb89f72d48c23b6c34ddcb232a6e7c43a10eb473bc06f94fe5d50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf7851df4aeeb89f72d48c23b6c34ddcb232a6e7c43a10eb473bc06f94fe5d50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf7851df4aeeb89f72d48c23b6c34ddcb232a6e7c43a10eb473bc06f94fe5d50", kill_on_drop: false }`
[INFO] [stdout] cf7851df4aeeb89f72d48c23b6c34ddcb232a6e7c43a10eb473bc06f94fe5d50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46b6745d611b6bae345d827f7a038a54eb973154de87e16aeb5322c8d06fa63a
[INFO] running `Command { std: "docker" "start" "-a" "46b6745d611b6bae345d827f7a038a54eb973154de87e16aeb5322c8d06fa63a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling serde_json v1.0.99
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]     Checking scheme-converter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/core/tree.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use serde_json::{Result, Value};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/core/tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::fs::File;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/core/tree.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use std::io::Read;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/core/tree.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use std::path::Path;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::leaf::tree::Leaf`
[INFO] [stdout]   --> src/core/tree.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::leaf::tree::Leaf;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/core/tree.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use serde_json::{Result, Value};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/core/tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::fs::File;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/core/tree.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use std::io::Read;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/core/tree.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use std::path::Path;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::leaf::tree::Leaf`
[INFO] [stdout]   --> src/core/tree.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::leaf::tree::Leaf;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/core/tree.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use std::fs::File;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]   --> src/core/tree.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use std::io::Read;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/core/tree.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     use std::path::Path;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/core/tree.rs:39:30
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Tree::Leaf { value } => {
[INFO] [stdout]    |                              ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Int32Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf/number.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Int32Leaf{
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub struct Leaf<LeafType> {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/core/tree/list.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct List {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Tree` is never used
[INFO] [stdout]   --> src/core/tree.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub enum Tree<LeafType: std::fmt::Debug> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `append` is never used
[INFO] [stdout]   --> src/core/tree.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     impl<LeafType : std::fmt::Debug> Tree<LeafType> {
[INFO] [stdout]    |     ----------------------------------------------- method in this implementation
[INFO] [stdout] 29 |         pub fn append(&mut self, key: String, value: Tree<LeafType>) {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `to_json` and `to_yml` are never used
[INFO] [stdout]  --> src/core/converter.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub trait Converter {
[INFO] [stdout]   |               --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 6 |         fn to_json(&self) -> String;
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 7 |         fn to_yml(&self) -> String;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/core/tree.rs:39:30
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Tree::Leaf { value } => {
[INFO] [stdout]    |                              ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/core/tree.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let tree = Tree::Leaf { value: 1 };
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/core/tree.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let tree = Tree::Leaf { value: "aaa" };
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/core/tree.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let tree = Tree::ListBranch {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Int32Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf/number.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Int32Leaf{
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub struct Leaf<LeafType> {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/core/tree/list.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct List {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/core/tree.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use serde_json::{Result, Value};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/core/tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::fs::File;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/core/tree.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use std::io::Read;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/core/tree.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use std::path::Path;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::leaf::tree::Leaf`
[INFO] [stdout]   --> src/core/tree.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::leaf::tree::Leaf;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::core::tree`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::core::tree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     if (tree.is_none()) {
[INFO] [stdout]    |        ^              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 83 -     if (tree.is_none()) {
[INFO] [stdout] 83 +     if tree.is_none() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/core/tree.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use serde_json::{Result, Value};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/core/tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::fs::File;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/core/tree.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use std::io::Read;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/core/tree.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     use std::path::Path;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::leaf::tree::Leaf`
[INFO] [stdout]   --> src/core/tree.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::leaf::tree::Leaf;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/core/tree.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use std::fs::File;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]   --> src/core/tree.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     use std::io::Read;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/core/tree.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     use std::path::Path;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::core::tree`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::core::tree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     if (tree.is_none()) {
[INFO] [stdout]    |        ^              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 83 -     if (tree.is_none()) {
[INFO] [stdout] 83 +     if tree.is_none() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/core/tree.rs:39:30
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Tree::Leaf { value } => {
[INFO] [stdout]    |                              ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/main.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut tree: Tree<Leaf> = Tree::MapBranch {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut tree: Tree<Leaf> = Tree::MapBranch {
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     String(String),
[INFO] [stdout]    |     ------ ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Leaf` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 22 |     String(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Number(i64),
[INFO] [stdout]    |     ------ ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Leaf` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Number(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Boolean(bool),
[INFO] [stdout]    |     ------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Leaf` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Boolean(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_fibonach_recursively` is never used
[INFO] [stdout]    --> src/main.rs:164:4
[INFO] [stdout]     |
[INFO] [stdout] 164 | fn calc_fibonach_recursively(n: i64) -> i64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Int32Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf/number.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Int32Leaf{
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub struct Leaf<LeafType> {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/core/tree/list.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct List {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ListBranch` is never constructed
[INFO] [stdout]   --> src/core/tree.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub enum Tree<LeafType: std::fmt::Debug> {
[INFO] [stdout]    |              ---- variant in this enum
[INFO] [stdout] 17 |         ListBranch {
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `to_json` and `to_yml` are never used
[INFO] [stdout]  --> src/core/converter.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub trait Converter {
[INFO] [stdout]   |               --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 6 |         fn to_json(&self) -> String;
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 7 |         fn to_yml(&self) -> String;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/core/tree.rs:39:30
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Tree::Leaf { value } => {
[INFO] [stdout]    |                              ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/core/tree.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let tree = Tree::Leaf { value: 1 };
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/core/tree.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let tree = Tree::Leaf { value: "aaa" };
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/core/tree.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let tree = Tree::ListBranch {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/main.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut tree: Tree<Leaf> = Tree::MapBranch {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut tree: Tree<Leaf> = Tree::MapBranch {
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     String(String),
[INFO] [stdout]    |     ------ ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Leaf` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 22 |     String(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Number(i64),
[INFO] [stdout]    |     ------ ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Leaf` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Number(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Boolean(bool),
[INFO] [stdout]    |     ------- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Leaf` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Boolean(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_fibonach_recursively` is never used
[INFO] [stdout]    --> src/main.rs:164:4
[INFO] [stdout]     |
[INFO] [stdout] 164 | fn calc_fibonach_recursively(n: i64) -> i64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Int32Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf/number.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Int32Leaf{
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Leaf` is never constructed
[INFO] [stdout]  --> src/core/tree/leaf.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub struct Leaf<LeafType> {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/core/tree/list.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct List {
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `Command { std: "docker" "inspect" "46b6745d611b6bae345d827f7a038a54eb973154de87e16aeb5322c8d06fa63a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46b6745d611b6bae345d827f7a038a54eb973154de87e16aeb5322c8d06fa63a", kill_on_drop: false }`
[INFO] [stdout] 46b6745d611b6bae345d827f7a038a54eb973154de87e16aeb5322c8d06fa63a
