[INFO] cloning repository https://github.com/blueseller/study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blueseller/study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblueseller%2Fstudy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblueseller%2Fstudy'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblueseller%2Fstudy: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/blueseller/study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blueseller/study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblueseller%2Fstudy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblueseller%2Fstudy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8830cc3cf8f64b34276b1d6230031651f177f52f
[INFO] checking blueseller/study against master#613bdd49978298648ed05ace086bd1ecad54b44a for pr-136458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblueseller%2Fstudy" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blueseller/study on toolchain 613bdd49978298648ed05ace086bd1ecad54b44a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blueseller/study
[INFO] finished tweaking git repo https://github.com/blueseller/study
[INFO] tweaked toml for git repo https://github.com/blueseller/study written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/blueseller/study 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" "+613bdd49978298648ed05ace086bd1ecad54b44a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66b4df21f4169fa53446d98fc2bdc33be3240f996cdd08362f626b170642df0b
[INFO] running `Command { std: "docker" "start" "-a" "66b4df21f4169fa53446d98fc2bdc33be3240f996cdd08362f626b170642df0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66b4df21f4169fa53446d98fc2bdc33be3240f996cdd08362f626b170642df0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b4df21f4169fa53446d98fc2bdc33be3240f996cdd08362f626b170642df0b", kill_on_drop: false }`
[INFO] [stdout] 66b4df21f4169fa53446d98fc2bdc33be3240f996cdd08362f626b170642df0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4090f1d44237684ed557d64c48fe73def0c57772d1f2425cc8925f9441fa20bb
[INFO] running `Command { std: "docker" "start" "-a" "4090f1d44237684ed557d64c48fe73def0c57772d1f2425cc8925f9441fa20bb", kill_on_drop: false }`
[INFO] [stderr]     Checking study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ptr::read`
[INFO] [stdout]  --> src/s_vet/one.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::Index, ptr::read};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::s_vet::hash`
[INFO] [stdout]  --> src/s_vet/hash.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::s_vet::hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/s_thread/ths.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ptr::read`
[INFO] [stdout]  --> src/s_vet/one.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops::Index, ptr::read};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::s_vet::hash`
[INFO] [stdout]  --> src/s_vet/hash.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::s_vet::hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/s_thread/ths.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/s_option/s_option.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             _ => {
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/s_option/s_option.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Director::East => {
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 28 |             Director::West=> {
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 32 |             Director::North=> {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 36 |             Director::South=> {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 40 |             _ => {
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xxx`
[INFO] [stdout]   --> src/s_vet/one.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let xxx = vec![1,2,3];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xxx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `yyy`
[INFO] [stdout]   --> src/s_vet/one.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let yyy = vec!["a","b","c"];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_yyy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/s_option/s_option.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             _ => {
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/s_option/s_option.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Director::East => {
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 28 |             Director::West=> {
[INFO] [stdout]    |             -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 32 |             Director::North=> {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 36 |             Director::South=> {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 40 |             _ => {
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/s_vet/one.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 |    let mut vv = vec![1,2,3,4,5];
[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: unused variable: `xxx`
[INFO] [stdout]   --> src/s_vet/one.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let xxx = vec![1,2,3];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xxx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `yyy`
[INFO] [stdout]   --> src/s_vet/one.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let yyy = vec!["a","b","c"];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_yyy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/s_vet/one.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 |    let mut vv = vec![1,2,3,4,5];
[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: function `change_type` is never used
[INFO] [stdout]   --> src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn change_type() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vet_hash` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn vet_hash(){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vet_study` is never used
[INFO] [stdout]   --> src/main.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn vet_study(){
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_study` is never used
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn option_study() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Director` is never used
[INFO] [stdout]  --> src/s_option/s_option.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Director {
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Path` is never used
[INFO] [stdout]  --> src/s_option/s_option.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Path {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> src/s_option/s_option.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Director {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 22 |     pub fn run(self) -> String {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_director` is never used
[INFO] [stdout]   --> src/s_option/s_option.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn match_director(typ: Director) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FunAction` is never used
[INFO] [stdout]  --> src/s_option/opt_fun.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum FunAction<T> {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Action` is never constructed
[INFO] [stdout]  --> src/s_option/opt_fun.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Action {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `do_something` are never used
[INFO] [stdout]   --> src/s_option/opt_fun.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Action {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new(name: String) -> Action {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn do_something(&self, do_action: FunAction<String>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare` is never used
[INFO] [stdout]  --> src/s_option/funs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn compare(){
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first` is never used
[INFO] [stdout]  --> src/s_vet/one.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn first() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_slice` is never used
[INFO] [stdout]   --> src/s_vet/one.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn do_slice(){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_vec` is never used
[INFO] [stdout]   --> src/s_vet/one.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn loop_vec() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/s_vet/diff_type.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Show` is never used
[INFO] [stdout]  --> src/s_vet/diff_type.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Show {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `V4` is never constructed
[INFO] [stdout]   --> src/s_vet/diff_type.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct V4(String);
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `V6` is never constructed
[INFO] [stdout]   --> src/s_vet/diff_type.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct V6(String);
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_ip_addrs` is never used
[INFO] [stdout]   --> src/s_vet/diff_type.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn show_ip_addrs() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_diff_types` is never used
[INFO] [stdout]   --> src/s_vet/diff_type.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn use_diff_types() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_hash` is never used
[INFO] [stdout]  --> src/s_vet/hash.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn show_hash(){
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change` is never used
[INFO] [stdout]  --> src/typ_change/change.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn change() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lock` is never used
[INFO] [stdout]  --> src/s_thread/s_mutex.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn lock() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_type` is never used
[INFO] [stdout]   --> src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn change_type() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vet_hash` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn vet_hash(){
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vet_study` is never used
[INFO] [stdout]   --> src/main.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn vet_study(){
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_study` is never used
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn option_study() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Director` is never used
[INFO] [stdout]  --> src/s_option/s_option.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Director {
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Path` is never used
[INFO] [stdout]  --> src/s_option/s_option.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Path {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]   --> src/s_option/s_option.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Director {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 22 |     pub fn run(self) -> String {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_director` is never used
[INFO] [stdout]   --> src/s_option/s_option.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn match_director(typ: Director) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FunAction` is never used
[INFO] [stdout]  --> src/s_option/opt_fun.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum FunAction<T> {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Action` is never constructed
[INFO] [stdout]  --> src/s_option/opt_fun.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Action {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `do_something` are never used
[INFO] [stdout]   --> src/s_option/opt_fun.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Action {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new(name: String) -> Action {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn do_something(&self, do_action: FunAction<String>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compare` is never used
[INFO] [stdout]  --> src/s_option/funs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn compare(){
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first` is never used
[INFO] [stdout]  --> src/s_vet/one.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn first() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_slice` is never used
[INFO] [stdout]   --> src/s_vet/one.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn do_slice(){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_vec` is never used
[INFO] [stdout]   --> src/s_vet/one.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn loop_vec() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/s_vet/diff_type.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Show` is never used
[INFO] [stdout]  --> src/s_vet/diff_type.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Show {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `V4` is never constructed
[INFO] [stdout]   --> src/s_vet/diff_type.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct V4(String);
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `V6` is never constructed
[INFO] [stdout]   --> src/s_vet/diff_type.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct V6(String);
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_ip_addrs` is never used
[INFO] [stdout]   --> src/s_vet/diff_type.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn show_ip_addrs() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_diff_types` is never used
[INFO] [stdout]   --> src/s_vet/diff_type.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn use_diff_types() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_hash` is never used
[INFO] [stdout]  --> src/s_vet/hash.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn show_hash(){
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change` is never used
[INFO] [stdout]  --> src/typ_change/change.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn change() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lock` is never used
[INFO] [stdout]  --> src/s_thread/s_mutex.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn lock() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "4090f1d44237684ed557d64c48fe73def0c57772d1f2425cc8925f9441fa20bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4090f1d44237684ed557d64c48fe73def0c57772d1f2425cc8925f9441fa20bb", kill_on_drop: false }`
[INFO] [stdout] 4090f1d44237684ed557d64c48fe73def0c57772d1f2425cc8925f9441fa20bb