[INFO] cloning repository https://github.com/kunfan96/rust-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kunfan96/rust-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunfan96%2Frust-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunfan96%2Frust-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bbc68014013786365ca793edd4613b7ffdf9740e
[INFO] checking kunfan96/rust-demo against master#96df4943409564a187894018f15f795426dc2e1f for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunfan96%2Frust-demo" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kunfan96/rust-demo on toolchain 96df4943409564a187894018f15f795426dc2e1f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+96df4943409564a187894018f15f795426dc2e1f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kunfan96/rust-demo
[INFO] finished tweaking git repo https://github.com/kunfan96/rust-demo
[INFO] tweaked toml for git repo https://github.com/kunfan96/rust-demo written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kunfan96/rust-demo 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" "+96df4943409564a187894018f15f795426dc2e1f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking kunfan96/rust-demo against try#7e4f74fb8736fea8f455bb6e094122965ae8f4cd for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunfan96%2Frust-demo" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kunfan96/rust-demo on toolchain 7e4f74fb8736fea8f455bb6e094122965ae8f4cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kunfan96/rust-demo
[INFO] finished tweaking git repo https://github.com/kunfan96/rust-demo
[INFO] tweaked toml for git repo https://github.com/kunfan96/rust-demo written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kunfan96/rust-demo 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" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4bd997692b4f5dbfc7d50eadd18839b21553d0f93313ca4392537d6cc4e8a9e
[INFO] running `Command { std: "docker" "start" "-a" "f4bd997692b4f5dbfc7d50eadd18839b21553d0f93313ca4392537d6cc4e8a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4bd997692b4f5dbfc7d50eadd18839b21553d0f93313ca4392537d6cc4e8a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bd997692b4f5dbfc7d50eadd18839b21553d0f93313ca4392537d6cc4e8a9e", kill_on_drop: false }`
[INFO] [stdout] f4bd997692b4f5dbfc7d50eadd18839b21553d0f93313ca4392537d6cc4e8a9e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39de1b12bb65ce298c2ff2c972c2f82a01efd1a7e1ac007dab440f7d2f0ea439
[INFO] running `Command { std: "docker" "start" "-a" "39de1b12bb65ce298c2ff2c972c2f82a01efd1a7e1ac007dab440f7d2f0ea439", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/utils/demo_fn.rs:94:52
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let arr_1: [String; 8] = core::array::from_fn(|i| String::from("uiuiiu"));
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/utils/demo_fn.rs:94:52
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let arr_1: [String; 8] = core::array::from_fn(|i| String::from("uiuiiu"));
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_my` is never used
[INFO] [stdout]  --> src/utils/demo_fn.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hello_my() -> String {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_you` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn hello_you(str_a: &mut String) -> &String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_hello` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn run_hello() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ch_str` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn get_ch_str() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_tum` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn get_tum() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/utils/demo_fn.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_struct` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn test_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_enum` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn test_enum() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_my` is never used
[INFO] [stdout]  --> src/utils/demo_fn.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hello_my() -> String {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `One`, `Two`, and `Three` are never constructed
[INFO] [stdout]   --> src/utils/demo_fn.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     enum CardProperty {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 70 |         One,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 71 |         Two,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 72 |         Three,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CardProperty` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_you` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn hello_you(str_a: &mut String) -> &String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `One` and `Two` are never constructed
[INFO] [stdout]   --> src/utils/demo_fn.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     enum DetailCard {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 84 |         One(u8),
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 85 |         Two(u8),
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DetailCard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_hello` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn run_hello() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_array` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn test_array() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_condition` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn test_condition() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ch_str` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn get_ch_str() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_match` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn test_match() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_tum` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn get_tum() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> src/utils/demo_fn.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct User {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_struct` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn test_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Jack`, `Martin`, and `Mike` are never constructed
[INFO] [stdout]    --> src/utils/demo_fn.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |     enum DetailData {
[INFO] [stdout]     |          ---------- variants in this enum
[INFO] [stdout] 122 |         Jack,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 123 |         Martin,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 124 |         Mike,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DetailData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_enum` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn test_enum() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_method` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:211:8
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub fn test_method () {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]    --> src/utils/demo_fn.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |     struct People {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 215 |         name: String,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 216 |         age: i32
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `People` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `One`, `Two`, and `Three` are never constructed
[INFO] [stdout]   --> src/utils/demo_fn.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     enum CardProperty {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 70 |         One,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 71 |         Two,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 72 |         Three,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CardProperty` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `show_info`, `show_info2`, and `name` are never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:220:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |     impl People {
[INFO] [stdout]     |     ----------- associated items in this implementation
[INFO] [stdout] 220 |         pub fn new (name: String, age: i32) -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 227 |         pub fn show_info (&self) {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |         pub fn show_info2 (&self) {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 235 |         pub fn name (&self) -> &String {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `One` and `Two` are never constructed
[INFO] [stdout]   --> src/utils/demo_fn.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     enum DetailCard {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 84 |         One(u8),
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 85 |         Two(u8),
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DetailCard` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_vector` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 | pub fn test_vector () {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_array` is never used
[INFO] [stdout]   --> src/utils/demo_fn.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn test_array() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_hash` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:264:8
[INFO] [stdout]     |
[INFO] [stdout] 264 | pub fn test_hash () {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_condition` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn test_condition() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_match` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn test_match() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Jack`, `Martin`, and `Mike` are never constructed
[INFO] [stdout]    --> src/utils/demo_fn.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |     enum DetailData {
[INFO] [stdout]     |          ---------- variants in this enum
[INFO] [stdout] 122 |         Jack,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 123 |         Martin,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 124 |         Mike,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DetailData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_method` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:211:8
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub fn test_method () {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]    --> src/utils/demo_fn.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |     struct People {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 215 |         name: String,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 216 |         age: i32
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `People` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `show_info`, `show_info2`, and `name` are never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:220:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |     impl People {
[INFO] [stdout]     |     ----------- associated items in this implementation
[INFO] [stdout] 220 |         pub fn new (name: String, age: i32) -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 227 |         pub fn show_info (&self) {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |         pub fn show_info2 (&self) {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 235 |         pub fn name (&self) -> &String {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_vector` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 | pub fn test_vector () {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_hash` is never used
[INFO] [stdout]    --> src/utils/demo_fn.rs:264:8
[INFO] [stdout]     |
[INFO] [stdout] 264 | pub fn test_hash () {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.51s
[INFO] running `Command { std: "docker" "inspect" "39de1b12bb65ce298c2ff2c972c2f82a01efd1a7e1ac007dab440f7d2f0ea439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39de1b12bb65ce298c2ff2c972c2f82a01efd1a7e1ac007dab440f7d2f0ea439", kill_on_drop: false }`
[INFO] [stdout] 39de1b12bb65ce298c2ff2c972c2f82a01efd1a7e1ac007dab440f7d2f0ea439