[INFO] cloning repository https://github.com/SuanCaiYv/rust-learn-base
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SuanCaiYv/rust-learn-base" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b1d5d9a7778721f463fa91e515064438849ed12
[INFO] checking SuanCaiYv/rust-learn-base against master#7c4ac0603e9ee5295bc802c90575391288a69a8a for pr-124728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base" "/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/SuanCaiYv/rust-learn-base on toolchain 7c4ac0603e9ee5295bc802c90575391288a69a8a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SuanCaiYv/rust-learn-base
[INFO] finished tweaking git repo https://github.com/SuanCaiYv/rust-learn-base
[INFO] tweaked toml for git repo https://github.com/SuanCaiYv/rust-learn-base written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SuanCaiYv/rust-learn-base 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" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "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 SuanCaiYv/rust-learn-base against try#98ebbae35138252af77610c20ea5a5e8bf68d639 for pr-124728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SuanCaiYv/rust-learn-base on toolchain 98ebbae35138252af77610c20ea5a5e8bf68d639
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SuanCaiYv/rust-learn-base
[INFO] finished tweaking git repo https://github.com/SuanCaiYv/rust-learn-base
[INFO] tweaked toml for git repo https://github.com/SuanCaiYv/rust-learn-base written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/SuanCaiYv/rust-learn-base 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" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking SuanCaiYv/rust-learn-base against try#98ebbae35138252af77610c20ea5a5e8bf68d639 for pr-124728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SuanCaiYv/rust-learn-base on toolchain 98ebbae35138252af77610c20ea5a5e8bf68d639
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SuanCaiYv/rust-learn-base
[INFO] finished tweaking git repo https://github.com/SuanCaiYv/rust-learn-base
[INFO] tweaked toml for git repo https://github.com/SuanCaiYv/rust-learn-base written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/SuanCaiYv/rust-learn-base 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" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40d53b96daeeab75c07d10bacef1fdb3e3539cc3cc4624ee10d95a422e759e51
[INFO] running `Command { std: "docker" "start" "-a" "40d53b96daeeab75c07d10bacef1fdb3e3539cc3cc4624ee10d95a422e759e51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40d53b96daeeab75c07d10bacef1fdb3e3539cc3cc4624ee10d95a422e759e51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40d53b96daeeab75c07d10bacef1fdb3e3539cc3cc4624ee10d95a422e759e51", kill_on_drop: false }`
[INFO] [stdout] 40d53b96daeeab75c07d10bacef1fdb3e3539cc3cc4624ee10d95a422e759e51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce4df2c2c7f4596f77d825039514fc668b65bdef0c9dc823517a7c0108491f2c
[INFO] running `Command { std: "docker" "start" "-a" "ce4df2c2c7f4596f77d825039514fc668b65bdef0c9dc823517a7c0108491f2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rust-base-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/function.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/thread0.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> src/test.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/main.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | mod test;
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::*`
[INFO] [stdout]  --> src/oop.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Local`
[INFO] [stdout]  --> src/oop.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use chrono::Local;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Add`, `Deref`
[INFO] [stdout]  --> src/unsafe0.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Deref};
[INFO] [stdout]   |                ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr::drop_in_place`
[INFO] [stdout]  --> src/unsafe0.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ptr::drop_in_place;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/unsafe0.rs:115:6
[INFO] [stdout]     |
[INFO] [stdout] 115 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::struct0::*`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::struct0::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::test::test`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::test::test;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::unsafe0::*`
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | use crate::unsafe0::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/function.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/thread0.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]  --> src/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::spawn;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::*`
[INFO] [stdout]  --> src/oop.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Local`
[INFO] [stdout]  --> src/oop.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use chrono::Local;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Add`, `Deref`
[INFO] [stdout]  --> src/unsafe0.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Deref};
[INFO] [stdout]   |                ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr::drop_in_place`
[INFO] [stdout]  --> src/unsafe0.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ptr::drop_in_place;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/unsafe0.rs:115:6
[INFO] [stdout]     |
[INFO] [stdout] 115 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::struct0::*`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::struct0::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::test::test`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::test::test;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::unsafe0::*`
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | use crate::unsafe0::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var1`
[INFO] [stdout]  --> src/base.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let var1 = 10;
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var2`
[INFO] [stdout]  --> src/base.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let var2 :i64 = 20;
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `var3` is assigned to, but never used
[INFO] [stdout]  --> src/base.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut var3 = 15;
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_var3` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `var3` is never read
[INFO] [stdout]  --> src/base.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     var3 = 25;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var1`
[INFO] [stdout]   --> src/base.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let var1 = "str1";
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var4`
[INFO] [stdout]   --> src/base.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let var4 = 1.0;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var5`
[INFO] [stdout]   --> src/base.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let var5 = true;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var6`
[INFO] [stdout]   --> src/base.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let var6 = '😊';
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup1`
[INFO] [stdout]   --> src/base.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let tup1 = (1, 2, 3);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tup1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup2`
[INFO] [stdout]   --> src/base.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let tup2 = (1, 2.0, false);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tup2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr1`
[INFO] [stdout]   --> src/base.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let arr1 = [1, 2, 3];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]  --> src/ownership.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn move_ownership(str : String) {
[INFO] [stdout]   |                       ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/ownership.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn reference_ownership(str : &String) {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var1`
[INFO] [stdout]  --> src/base.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let var1 = 10;
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var2`
[INFO] [stdout]  --> src/base.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let var2 :i64 = 20;
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `var3` is assigned to, but never used
[INFO] [stdout]  --> src/base.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut var3 = 15;
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_var3` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `var3` is never read
[INFO] [stdout]  --> src/base.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     var3 = 25;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var1`
[INFO] [stdout]   --> src/base.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let var1 = "str1";
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var4`
[INFO] [stdout]   --> src/base.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let var4 = 1.0;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var5`
[INFO] [stdout]   --> src/base.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let var5 = true;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var6`
[INFO] [stdout]   --> src/base.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let var6 = '😊';
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_var6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup1`
[INFO] [stdout]   --> src/base.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let tup1 = (1, 2, 3);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tup1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup2`
[INFO] [stdout]   --> src/base.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let tup2 = (1, 2.0, false);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tup2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr1`
[INFO] [stdout]   --> src/base.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let arr1 = [1, 2, 3];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arr1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/vector.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut vec1 = vec![1, 2, 3];
[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: `s1`
[INFO] [stdout]  --> src/string0.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let s1 = "aaa".to_string();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]  --> src/string0.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s2 = String::from("aaa");
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]  --> src/ownership.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn move_ownership(str : String) {
[INFO] [stdout]   |                       ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/ownership.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn reference_ownership(str : &String) {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `all`
[INFO] [stdout]   --> src/lifetime0.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let all: &'static str = "static";
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_all`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/lifetime0.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/lifetime0.rs:61:37
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/lifetime0.rs:61:52
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/vector.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut vec1 = vec![1, 2, 3];
[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: `s1`
[INFO] [stdout]  --> src/string0.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let s1 = "aaa".to_string();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]  --> src/string0.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s2 = String::from("aaa");
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `all`
[INFO] [stdout]   --> src/lifetime0.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let all: &'static str = "static";
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_all`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/lifetime0.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/lifetime0.rs:61:37
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/lifetime0.rs:61:52
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |                                                    ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp2`
[INFO] [stdout]    --> src/pointer.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let tmp2 = Tmp2 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp2`
[INFO] [stdout]    --> src/pointer.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let tmp2 = Tmp2 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp3`
[INFO] [stdout]    --> src/pointer.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let tmp3 = Tmp3 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp4`
[INFO] [stdout]    --> src/pointer.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let tmp4 = Tmp4 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp5`
[INFO] [stdout]    --> src/pointer.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let tmp5 = Tmp5 {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pointer.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let mut mr1 = MutRef {
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/thread0.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for i in 0..5 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp3`
[INFO] [stdout]    --> src/pointer.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let tmp3 = Tmp3 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp4`
[INFO] [stdout]    --> src/pointer.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let tmp4 = Tmp4 {
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp5`
[INFO] [stdout]    --> src/pointer.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let tmp5 = Tmp5 {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tmp5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pointer.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let mut mr1 = MutRef {
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/thread0.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for i in 0..5 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/design_mode.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let a = Some(12);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/design_mode.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |     if let Some(x) = b {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/unsafe0.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn f1<T>(t: T) {}
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/unsafe0.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn f2<T: ?Sized>(t: &T) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `c` is assigned to, but never used
[INFO] [stdout]    --> src/unsafe0.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |     let c: &Complex;
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_c` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/unsafe0.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     c = &Complex {
[INFO] [stdout]     |     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/unsafe0.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |             for i in 0..10 {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/design_mode.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let a = Some(12);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/lite_web.rs:87:24
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     Ok(size) => {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lite_web.rs:93:29
[INFO] [stdout]    |
[INFO] [stdout] 93 |                         for i in 0..len {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/lite_web.rs:102:25
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/design_mode.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |     if let Some(x) = b {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/unsafe0.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn f1<T>(t: T) {}
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/unsafe0.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn f2<T: ?Sized>(t: &T) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `c` is assigned to, but never used
[INFO] [stdout]    --> src/unsafe0.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |     let c: &Complex;
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_c` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/unsafe0.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     c = &Complex {
[INFO] [stdout]     |     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/unsafe0.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |             for i in 0..10 {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/lite_web.rs:87:24
[INFO] [stdout]    |
[INFO] [stdout] 87 |                     Ok(size) => {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/lite_web.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let handle = spawn(move || {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lite_web.rs:93:29
[INFO] [stdout]    |
[INFO] [stdout] 93 |                         for i in 0..len {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/lite_web.rs:102:25
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/lite_web.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let handle = spawn(move || {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap1_3` is never used
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn chap1_3() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap4` is never used
[INFO] [stdout]   --> src/main.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn chap4() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap5` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn chap5() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap6` is never used
[INFO] [stdout]   --> src/main.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn chap6() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap8` is never used
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn chap8() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap9` is never used
[INFO] [stdout]   --> src/main.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn chap9() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap13` is never used
[INFO] [stdout]    --> src/main.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn chap13() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap15` is never used
[INFO] [stdout]    --> src/main.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn chap15() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap16` is never used
[INFO] [stdout]    --> src/main.rs:114:4
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn chap16() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap17` is never used
[INFO] [stdout]    --> src/main.rs:118:4
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn chap17() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap18` is never used
[INFO] [stdout]    --> src/main.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn chap18() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `var` is never used
[INFO] [stdout]  --> src/base.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn var() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/base.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn add(x :i32, y :i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control` is never used
[INFO] [stdout]   --> src/base.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn control() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_ownership` is never used
[INFO] [stdout]  --> src/ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn move_ownership(str : String) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_ownership_and_giveback` is never used
[INFO] [stdout]  --> src/ownership.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn move_ownership_and_giveback(str : String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reference_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn reference_ownership(str : &String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reference_ownership_mut` is never used
[INFO] [stdout]   --> src/ownership.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn reference_ownership_mut(str : &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note_chap4` is never used
[INFO] [stdout]   --> src/ownership.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn note_chap4() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sub_str` is never used
[INFO] [stdout]   --> src/ownership.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn sub_str(str : &String, mut from : usize, mut to : usize) -> &str {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Phone` is never constructed
[INFO] [stdout]  --> src/struct0.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Phone {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `display` and `default` are never used
[INFO] [stdout]   --> src/struct0.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Phone {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     // 带self的则是实例方法
[INFO] [stdout] 12 |     pub fn display(&self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn default() -> Phone {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PhoneTuple` is never constructed
[INFO] [stdout]   --> src/struct0.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct PhoneTuple(pub String, pub String, pub String, pub u64);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PhoneMarked` is never constructed
[INFO] [stdout]   --> src/struct0.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PhoneMarked {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_phone` is never used
[INFO] [stdout]   --> src/struct0.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn build_phone(factory0: String, series0: String, seq_num0: String, id0: u64) -> Phone {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_phone_tuple` is never used
[INFO] [stdout]   --> src/struct0.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn build_phone_tuple(factory0: String, series0: String, seq_num0: String, id0: u64) -> PhoneTuple {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Company` is never used
[INFO] [stdout]  --> src/enum_match.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Company {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MsgStatus` is never used
[INFO] [stdout]   --> src/enum_match.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum MsgStatus {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap1_3` is never used
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn chap1_3() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/enum_match.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl MsgStatus {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 20 |     // 枚举类型也可以有方法
[INFO] [stdout] 21 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/enum_match.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Company {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 26 |     pub fn value(self) -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_phone` is never used
[INFO] [stdout]   --> src/enum_match.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn set_phone() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment` is never used
[INFO] [stdout]   --> src/enum_match.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn increment(op: Option<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_fmt` is never used
[INFO] [stdout]   --> src/enum_match.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn num_fmt(val: i32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `only_one` is never used
[INFO] [stdout]   --> src/enum_match.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn only_one(op: Option<i32>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `just_display_vec` is never used
[INFO] [stdout]  --> src/vector.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn just_display_vec() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MultiHttpMsg` is never used
[INFO] [stdout]   --> src/vector.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum MultiHttpMsg {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/vector.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl MultiHttpMsg {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 46 |     fn to_string(self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_string` is never used
[INFO] [stdout]  --> src/string0.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test_string() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]   --> src/string0.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn f(s: &String) -> &str {
[INFO] [stdout]    |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DoubleVal` is never constructed
[INFO] [stdout]  --> src/generic.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct DoubleVal<T, U> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `x`, `y`, and `swap` are never used
[INFO] [stdout]   --> src/generic.rs:7:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl<T, U> DoubleVal<T, U>{
[INFO] [stdout]    | -------------------------- methods in this implementation
[INFO] [stdout] 7  |     fn x(&self) -> &T {
[INFO] [stdout]    |        ^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn y(&self) -> &U {
[INFO] [stdout]    |        ^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn swap<V, W>(self, val: DoubleVal<V, W>) -> DoubleVal<T, W> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sum` is never used
[INFO] [stdout]   --> src/generic.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl DoubleVal<i32, i32> {
[INFO] [stdout]    | ------------------------ method in this implementation
[INFO] [stdout] 26 |     fn sum(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_double_val` is never used
[INFO] [stdout]   --> src/generic.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn test_double_val() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `info`, `print`, and `hello` are never used
[INFO] [stdout]  --> src/trait0.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Info {
[INFO] [stdout]   |           ---- methods in this trait
[INFO] [stdout] 2 |     fn info(&self) -> String;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 |     fn print(&self);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 5 |
[INFO] [stdout] 6 |     fn hello(&self) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_str` is never used
[INFO] [stdout]   --> src/trait0.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Str {
[INFO] [stdout]    |           --- method in this trait
[INFO] [stdout] 14 |     fn to_str(&self) -> String;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait` is never used
[INFO] [stdout]   --> src/trait0.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn test_trait() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param1` is never used
[INFO] [stdout]   --> src/trait0.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn trait_as_param1(val: &impl Info) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param2` is never used
[INFO] [stdout]   --> src/trait0.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn trait_as_param2<T: Info>(val: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param3` is never used
[INFO] [stdout]   --> src/trait0.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn trait_as_param3<T: Info + Str>(val: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param4` is never used
[INFO] [stdout]   --> src/trait0.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn trait_as_param4<T>(val: &T)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note` is never used
[INFO] [stdout]  --> src/lifetime0.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn note() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp` is never constructed
[INFO] [stdout]  --> src/lifetime0.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Tmp<'a, T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_lifetime` is never used
[INFO] [stdout]   --> src/lifetime0.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test_lifetime() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `choose_longest_str` is never used
[INFO] [stdout]   --> src/lifetime0.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn choose_longest_str<'a>(s1: &'a str, s2: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rule_one` is never used
[INFO] [stdout]   --> src/lifetime0.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rule_two` is never used
[INFO] [stdout]   --> src/lifetime0.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn rule_two<'a, T>(x: &'a T) -> &T {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rule_three` is never used
[INFO] [stdout]   --> src/lifetime0.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl<'a, T> Tmp<'a, T> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 71 |     fn rule_three(&self) -> &T {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_closure` is never used
[INFO] [stdout]  --> src/function.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn test_closure() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cache` is never constructed
[INFO] [stdout]   --> src/function.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Cache<T> where T: (Fn(i32, i32) -> i32) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `value`, and `size` are never used
[INFO] [stdout]   --> src/function.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl<T> Cache<T> where T: (Fn(i32, i32) -> i32) {
[INFO] [stdout]    | ----------------------------------------------- associated items in this implementation
[INFO] [stdout] 75 |     fn new(closure0: T) -> Cache<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn value(&mut self, x: i32, y: i32) -> &i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NumList` is never constructed
[INFO] [stdout]  --> src/iterator.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct NumList {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_iterator` is never used
[INFO] [stdout]   --> src/iterator.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn test_iterator() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/pointer.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> src/pointer.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct List {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp` is never constructed
[INFO] [stdout]   --> src/pointer.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Tmp {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]   --> src/pointer.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct MyBox<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/pointer.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<T> MyBox<T> {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 27 |     fn new(v: T) -> MyBox<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_box` is never used
[INFO] [stdout]   --> src/pointer.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn test_box() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp1` is never constructed
[INFO] [stdout]   --> src/pointer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Tmp1 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp2` is never constructed
[INFO] [stdout]   --> src/pointer.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct Tmp2 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp3` is never constructed
[INFO] [stdout]   --> src/pointer.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Tmp3 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp4` is never constructed
[INFO] [stdout]   --> src/pointer.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | struct Tmp4 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp5` is never constructed
[INFO] [stdout]   --> src/pointer.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Tmp5 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MutRef` is never constructed
[INFO] [stdout]   --> src/pointer.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct MutRef<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add` is never used
[INFO] [stdout]   --> src/pointer.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | impl<T> MutRef<T> {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 86 |     fn add(&self, v: T) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_deref` is never used
[INFO] [stdout]   --> src/pointer.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn test_deref() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_thread` is never used
[INFO] [stdout]   --> src/thread0.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn test_thread() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/test.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Print` is never used
[INFO] [stdout]  --> src/oop.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Print {
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]  --> src/oop.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Dog {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]   --> src/oop.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Cat {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_oop` is never used
[INFO] [stdout]   --> src/oop.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn test_oop() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `design_mode_note` is never used
[INFO] [stdout]  --> src/design_mode.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn design_mode_note() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TmpHeap` is never constructed
[INFO] [stdout]   --> src/unsafe0.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct TmpHeap {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment` is never used
[INFO] [stdout]   --> src/unsafe0.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | unsafe fn increment(ptr: *mut i32) {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `COUNT` is never used
[INFO] [stdout]   --> src/unsafe0.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | static mut COUNT: i32 = 0;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `UnsafePrint` is never used
[INFO] [stdout]   --> src/unsafe0.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 | unsafe trait UnsafePrint {
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Val` is never used
[INFO] [stdout]   --> src/unsafe0.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 | trait Val {
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Value` is never used
[INFO] [stdout]   --> src/unsafe0.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | trait Value<T> {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GenericType` is never constructed
[INFO] [stdout]   --> src/unsafe0.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct GenericType<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `i` are never read
[INFO] [stdout]   --> src/unsafe0.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Complex {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 67 |     a: i64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 68 |     i: i64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Multi` is never used
[INFO] [stdout]   --> src/unsafe0.rs:72:7
[INFO] [stdout]    |
[INFO] [stdout] 72 | trait Multi<OTHER=Self> {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1` is never used
[INFO] [stdout]   --> src/unsafe0.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn f1<T>(t: T) {}
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2` is never used
[INFO] [stdout]   --> src/unsafe0.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn f2<T: ?Sized>(t: &T) {}
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inc` is never used
[INFO] [stdout]   --> src/unsafe0.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn inc(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_twice` is never used
[INFO] [stdout]    --> src/unsafe0.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn add_twice(func: fn(i32, i32) -> i32, val: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure_ret` is never used
[INFO] [stdout]    --> src/unsafe0.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn closure_ret() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `func_ret` is never used
[INFO] [stdout]    --> src/unsafe0.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn func_ret() -> fn(i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_unsafe` is never used
[INFO] [stdout]    --> src/unsafe0.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn test_unsafe() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `thread_num` and `worker_list` are never read
[INFO] [stdout]   --> src/lite_web.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Executors {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 10 |     thread_num: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     worker_list: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread_handle` are never read
[INFO] [stdout]   --> src/lite_web.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 47 |     id: String,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 48 |     thread_handle: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     handle1.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let _ = handle1.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap4` is never used
[INFO] [stdout]   --> src/main.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn chap4() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap5` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn chap5() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap6` is never used
[INFO] [stdout]   --> src/main.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn chap6() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap8` is never used
[INFO] [stdout]   --> src/main.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn chap8() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap9` is never used
[INFO] [stdout]   --> src/main.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn chap9() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap13` is never used
[INFO] [stdout]    --> src/main.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn chap13() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap15` is never used
[INFO] [stdout]    --> src/main.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn chap15() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap16` is never used
[INFO] [stdout]    --> src/main.rs:114:4
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn chap16() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap17` is never used
[INFO] [stdout]    --> src/main.rs:118:4
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn chap17() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chap18` is never used
[INFO] [stdout]    --> src/main.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn chap18() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `var` is never used
[INFO] [stdout]  --> src/base.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn var() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/base.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn add(x :i32, y :i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control` is never used
[INFO] [stdout]   --> src/base.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn control() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_ownership` is never used
[INFO] [stdout]  --> src/ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn move_ownership(str : String) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_ownership_and_giveback` is never used
[INFO] [stdout]  --> src/ownership.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn move_ownership_and_giveback(str : String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reference_ownership` is never used
[INFO] [stdout]   --> src/ownership.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn reference_ownership(str : &String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reference_ownership_mut` is never used
[INFO] [stdout]   --> src/ownership.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn reference_ownership_mut(str : &mut String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note_chap4` is never used
[INFO] [stdout]   --> src/ownership.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn note_chap4() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sub_str` is never used
[INFO] [stdout]   --> src/ownership.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn sub_str(str : &String, mut from : usize, mut to : usize) -> &str {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Phone` is never constructed
[INFO] [stdout]  --> src/struct0.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Phone {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `display` and `default` are never used
[INFO] [stdout]   --> src/struct0.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Phone {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     // 带self的则是实例方法
[INFO] [stdout] 12 |     pub fn display(&self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn default() -> Phone {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PhoneTuple` is never constructed
[INFO] [stdout]   --> src/struct0.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct PhoneTuple(pub String, pub String, pub String, pub u64);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PhoneMarked` is never constructed
[INFO] [stdout]   --> src/struct0.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PhoneMarked {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_phone` is never used
[INFO] [stdout]   --> src/struct0.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn build_phone(factory0: String, series0: String, seq_num0: String, id0: u64) -> Phone {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_phone_tuple` is never used
[INFO] [stdout]   --> src/struct0.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn build_phone_tuple(factory0: String, series0: String, seq_num0: String, id0: u64) -> PhoneTuple {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Company` is never used
[INFO] [stdout]  --> src/enum_match.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Company {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MsgStatus` is never used
[INFO] [stdout]   --> src/enum_match.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum MsgStatus {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/enum_match.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl MsgStatus {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 20 |     // 枚举类型也可以有方法
[INFO] [stdout] 21 |     pub fn print(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/enum_match.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Company {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 26 |     pub fn value(self) -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_phone` is never used
[INFO] [stdout]   --> src/enum_match.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn set_phone() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment` is never used
[INFO] [stdout]   --> src/enum_match.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn increment(op: Option<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_fmt` is never used
[INFO] [stdout]   --> src/enum_match.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn num_fmt(val: i32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `only_one` is never used
[INFO] [stdout]   --> src/enum_match.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn only_one(op: Option<i32>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `just_display_vec` is never used
[INFO] [stdout]  --> src/vector.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn just_display_vec() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MultiHttpMsg` is never used
[INFO] [stdout]   --> src/vector.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum MultiHttpMsg {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/vector.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl MultiHttpMsg {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 46 |     fn to_string(self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_string` is never used
[INFO] [stdout]  --> src/string0.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test_string() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]   --> src/string0.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn f(s: &String) -> &str {
[INFO] [stdout]    |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DoubleVal` is never constructed
[INFO] [stdout]  --> src/generic.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct DoubleVal<T, U> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `x`, `y`, and `swap` are never used
[INFO] [stdout]   --> src/generic.rs:7:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl<T, U> DoubleVal<T, U>{
[INFO] [stdout]    | -------------------------- methods in this implementation
[INFO] [stdout] 7  |     fn x(&self) -> &T {
[INFO] [stdout]    |        ^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn y(&self) -> &U {
[INFO] [stdout]    |        ^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn swap<V, W>(self, val: DoubleVal<V, W>) -> DoubleVal<T, W> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sum` is never used
[INFO] [stdout]   --> src/generic.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl DoubleVal<i32, i32> {
[INFO] [stdout]    | ------------------------ method in this implementation
[INFO] [stdout] 26 |     fn sum(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_double_val` is never used
[INFO] [stdout]   --> src/generic.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn test_double_val() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `info`, `print`, and `hello` are never used
[INFO] [stdout]  --> src/trait0.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Info {
[INFO] [stdout]   |           ---- methods in this trait
[INFO] [stdout] 2 |     fn info(&self) -> String;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 3 |
[INFO] [stdout] 4 |     fn print(&self);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 5 |
[INFO] [stdout] 6 |     fn hello(&self) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_str` is never used
[INFO] [stdout]   --> src/trait0.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Str {
[INFO] [stdout]    |           --- method in this trait
[INFO] [stdout] 14 |     fn to_str(&self) -> String;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait` is never used
[INFO] [stdout]   --> src/trait0.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn test_trait() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param1` is never used
[INFO] [stdout]   --> src/trait0.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn trait_as_param1(val: &impl Info) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param2` is never used
[INFO] [stdout]   --> src/trait0.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn trait_as_param2<T: Info>(val: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param3` is never used
[INFO] [stdout]   --> src/trait0.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn trait_as_param3<T: Info + Str>(val: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_as_param4` is never used
[INFO] [stdout]   --> src/trait0.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn trait_as_param4<T>(val: &T)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note` is never used
[INFO] [stdout]  --> src/lifetime0.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn note() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp` is never constructed
[INFO] [stdout]  --> src/lifetime0.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Tmp<'a, T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_lifetime` is never used
[INFO] [stdout]   --> src/lifetime0.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test_lifetime() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `choose_longest_str` is never used
[INFO] [stdout]   --> src/lifetime0.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn choose_longest_str<'a>(s1: &'a str, s2: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rule_one` is never used
[INFO] [stdout]   --> src/lifetime0.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn rule_one<'a, 'b, 'c>(x: &'a i32, y: &'b String, z: &'c str) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rule_two` is never used
[INFO] [stdout]   --> src/lifetime0.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn rule_two<'a, T>(x: &'a T) -> &T {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rule_three` is never used
[INFO] [stdout]   --> src/lifetime0.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl<'a, T> Tmp<'a, T> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 71 |     fn rule_three(&self) -> &T {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_closure` is never used
[INFO] [stdout]  --> src/function.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn test_closure() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cache` is never constructed
[INFO] [stdout]   --> src/function.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Cache<T> where T: (Fn(i32, i32) -> i32) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `value`, and `size` are never used
[INFO] [stdout]   --> src/function.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl<T> Cache<T> where T: (Fn(i32, i32) -> i32) {
[INFO] [stdout]    | ----------------------------------------------- associated items in this implementation
[INFO] [stdout] 75 |     fn new(closure0: T) -> Cache<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn value(&mut self, x: i32, y: i32) -> &i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NumList` is never constructed
[INFO] [stdout]  --> src/iterator.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct NumList {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_iterator` is never used
[INFO] [stdout]   --> src/iterator.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn test_iterator() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/pointer.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> src/pointer.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct List {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp` is never constructed
[INFO] [stdout]   --> src/pointer.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Tmp {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]   --> src/pointer.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct MyBox<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/pointer.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<T> MyBox<T> {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 27 |     fn new(v: T) -> MyBox<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_box` is never used
[INFO] [stdout]   --> src/pointer.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn test_box() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp1` is never constructed
[INFO] [stdout]   --> src/pointer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Tmp1 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp2` is never constructed
[INFO] [stdout]   --> src/pointer.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct Tmp2 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp3` is never constructed
[INFO] [stdout]   --> src/pointer.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Tmp3 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp4` is never constructed
[INFO] [stdout]   --> src/pointer.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | struct Tmp4 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tmp5` is never constructed
[INFO] [stdout]   --> src/pointer.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Tmp5 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MutRef` is never constructed
[INFO] [stdout]   --> src/pointer.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct MutRef<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add` is never used
[INFO] [stdout]   --> src/pointer.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | impl<T> MutRef<T> {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 86 |     fn add(&self, v: T) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_deref` is never used
[INFO] [stdout]   --> src/pointer.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn test_deref() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_thread` is never used
[INFO] [stdout]   --> src/thread0.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn test_thread() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/test.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Print` is never used
[INFO] [stdout]  --> src/oop.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Print {
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]  --> src/oop.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Dog {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]   --> src/oop.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Cat {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_oop` is never used
[INFO] [stdout]   --> src/oop.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn test_oop() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `design_mode_note` is never used
[INFO] [stdout]  --> src/design_mode.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn design_mode_note() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TmpHeap` is never constructed
[INFO] [stdout]   --> src/unsafe0.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct TmpHeap {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment` is never used
[INFO] [stdout]   --> src/unsafe0.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | unsafe fn increment(ptr: *mut i32) {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `COUNT` is never used
[INFO] [stdout]   --> src/unsafe0.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | static mut COUNT: i32 = 0;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `UnsafePrint` is never used
[INFO] [stdout]   --> src/unsafe0.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 | unsafe trait UnsafePrint {
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Val` is never used
[INFO] [stdout]   --> src/unsafe0.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 | trait Val {
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Value` is never used
[INFO] [stdout]   --> src/unsafe0.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | trait Value<T> {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GenericType` is never constructed
[INFO] [stdout]   --> src/unsafe0.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct GenericType<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `i` are never read
[INFO] [stdout]   --> src/unsafe0.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct Complex {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 67 |     a: i64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 68 |     i: i64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Multi` is never used
[INFO] [stdout]   --> src/unsafe0.rs:72:7
[INFO] [stdout]    |
[INFO] [stdout] 72 | trait Multi<OTHER=Self> {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f1` is never used
[INFO] [stdout]   --> src/unsafe0.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn f1<T>(t: T) {}
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2` is never used
[INFO] [stdout]   --> src/unsafe0.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn f2<T: ?Sized>(t: &T) {}
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inc` is never used
[INFO] [stdout]   --> src/unsafe0.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn inc(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_twice` is never used
[INFO] [stdout]    --> src/unsafe0.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn add_twice(func: fn(i32, i32) -> i32, val: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure_ret` is never used
[INFO] [stdout]    --> src/unsafe0.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn closure_ret() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `func_ret` is never used
[INFO] [stdout]    --> src/unsafe0.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn func_ret() -> fn(i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_unsafe` is never used
[INFO] [stdout]    --> src/unsafe0.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn test_unsafe() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `thread_num` and `worker_list` are never read
[INFO] [stdout]   --> src/lite_web.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Executors {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 10 |     thread_num: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     worker_list: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread_handle` are never read
[INFO] [stdout]   --> src/lite_web.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 47 |     id: String,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 48 |     thread_handle: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     handle2.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let _ = handle2.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             producer.send(str);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 33 |             let _ = producer.send(str);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     handle3.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let _ = handle3.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         handle.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let _ = handle.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/unsafe0.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 156 |     handle1.join();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |     let _ = handle1.join();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lite_web.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         self.sender.send(Box::new(job));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let _ = self.sender.send(Box::new(job));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lite_web.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |                         socket.write(resp.as_bytes());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 99 |                         let _ = socket.write(resp.as_bytes());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lite_web.rs:100:25
[INFO] [stdout]     |
[INFO] [stdout] 100 |                         socket.flush();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |                         let _ = socket.flush();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lite_web.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |                 socket.write(req.as_slice());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 137 |                 let _ = socket.write(req.as_slice());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lite_web.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 socket.flush();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let _ = socket.flush();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     handle1.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let _ = handle1.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     handle2.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let _ = handle2.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             producer.send(str);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 33 |             let _ = producer.send(str);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     handle3.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let _ = handle3.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 164 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/thread0.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         handle.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let _ = handle.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/unsafe0.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 156 |     handle1.join();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |     let _ = handle1.join();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lite_web.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         self.sender.send(Box::new(job));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let _ = self.sender.send(Box::new(job));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lite_web.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |                         socket.write(resp.as_bytes());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 99 |                         let _ = socket.write(resp.as_bytes());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lite_web.rs:100:25
[INFO] [stdout]     |
[INFO] [stdout] 100 |                         socket.flush();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |                         let _ = socket.flush();
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lite_web.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |                 socket.write(req.as_slice());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 137 |                 let _ = socket.write(req.as_slice());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lite_web.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 socket.flush();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let _ = socket.flush();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 164 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.34s
[INFO] running `Command { std: "docker" "inspect" "ce4df2c2c7f4596f77d825039514fc668b65bdef0c9dc823517a7c0108491f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce4df2c2c7f4596f77d825039514fc668b65bdef0c9dc823517a7c0108491f2c", kill_on_drop: false }`
[INFO] [stdout] ce4df2c2c7f4596f77d825039514fc668b65bdef0c9dc823517a7c0108491f2c