[INFO] cloning repository https://github.com/zhoubing/hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhoubing/hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhoubing%2Fhello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhoubing%2Fhello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a75d85aa94453e4dc431f9e944d6c7e1f0d99b5b
[INFO] checking zhoubing/hello against try#4d8aa70caf2d2f6ef5a31eab47961bf7d0acacb7 for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhoubing%2Fhello" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zhoubing/hello
[INFO] finished tweaking git repo https://github.com/zhoubing/hello
[INFO] tweaked toml for git repo https://github.com/zhoubing/hello written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zhoubing/hello on toolchain 4d8aa70caf2d2f6ef5a31eab47961bf7d0acacb7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d8aa70caf2d2f6ef5a31eab47961bf7d0acacb7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zhoubing/hello 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" "+4d8aa70caf2d2f6ef5a31eab47961bf7d0acacb7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded pistoncore-event_loop v0.53.1
[INFO] [stderr]   Downloaded data-encoding-macro-internal v0.1.11
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419
[INFO] running `Command { std: "docker" "start" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419" "/opt/rustwide/cargo-home/bin/cargo" "+4d8aa70caf2d2f6ef5a31eab47961bf7d0acacb7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419" "/opt/rustwide/cargo-home/bin/cargo" "+4d8aa70caf2d2f6ef5a31eab47961bf7d0acacb7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
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[INFO] [stderr]    Compiling enum-as-inner v0.2.1
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[INFO] [stderr]     Checking trust-dns-proto v0.7.4
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[INFO] [stderr]     Checking trust-dns v0.16.1
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[INFO] [stderr]     Checking piston v0.53.2
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[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: linking to LLVM intrinsics is experimental
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn setjmp(_: *mut i8) -> i32;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #29602 <https://github.com/rust-lang/rust/issues/29602> for more information
[INFO] [stdout]     = help: add `#![feature(link_llvm_intrinsics)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-07-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: linking to LLVM intrinsics is experimental
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn longjmp(_: *mut i8);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #29602 <https://github.com/rust-lang/rust/issues/29602> for more information
[INFO] [stdout]     = help: add `#![feature(link_llvm_intrinsics)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-07-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env::args` and `thread`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{thread, env::args};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `App` and `Arg`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use clap::{App, Arg};
[INFO] [stdout]   |            ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `read`
[INFO] [stdout]  --> src/file.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::{File, read}, io::{BufReader, Read, BufRead}};
[INFO] [stdout]   |                      ^^^^                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kernel32`
[INFO] [stdout]  --> src/windows.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use kernel32;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `winapi::{
[INFO] [stdout]          
[INFO] [stdout]          }`
[INFO] [stdout]  --> src/windows.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |   use winapi::{
[INFO] [stdout]   |  _____^
[INFO] [stdout] 5 | |
[INFO] [stdout] 6 | | };
[INFO] [stdout]   | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/serializer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AddrParseError`
[INFO] [stdout]  --> src/network.rs:6:60
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::net::{TcpStream, UdpSocket, SocketAddr, Ipv6Addr, AddrParseError};
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/mget/ethernet.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ethernet::MacAddress`
[INFO] [stdout]  --> src/mget/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ethernet::MacAddress;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/threads/threads.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> src/threads/threads.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use libc::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::select`
[INFO] [stdout]  --> src/threads/render_hex.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use libc::select;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::arch::asm`
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::arch::asm;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `process` and `time`
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{mem, process, time};
[INFO] [stdout]   |                ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `rand` and `unshare`
[INFO] [stdout]   --> src/hardware_interrupt/interrupt.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | use libc::{raise, rand, SIG_DFL, SIG_IGN, signal, SIGTERM, SIGUSR1, unshare};
[INFO] [stdout]    |                   ^^^^                                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `#![feature]` attribute can only be used at the crate root
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the crate root is at `src/main.rs`
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `#![feature]` attribute can only be used at the crate root
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(link_llvm_intrinsics)]//为了使用setjmp和longjmp所需要用到的注解
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the crate root is at `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: linking to LLVM intrinsics is experimental
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn setjmp(_: *mut i8) -> i32;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #29602 <https://github.com/rust-lang/rust/issues/29602> for more information
[INFO] [stdout]     = help: add `#![feature(link_llvm_intrinsics)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-07-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: linking to LLVM intrinsics is experimental
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn longjmp(_: *mut i8);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #29602 <https://github.com/rust-lang/rust/issues/29602> for more information
[INFO] [stdout]     = help: add `#![feature(link_llvm_intrinsics)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-07-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env::args` and `thread`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{thread, env::args};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `App` and `Arg`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use clap::{App, Arg};
[INFO] [stdout]   |            ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `read`
[INFO] [stdout]  --> src/file.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::{File, read}, io::{BufReader, Read, BufRead}};
[INFO] [stdout]   |                      ^^^^                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kernel32`
[INFO] [stdout]  --> src/windows.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use kernel32;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `winapi::{
[INFO] [stdout]          
[INFO] [stdout]          }`
[INFO] [stdout]  --> src/windows.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |   use winapi::{
[INFO] [stdout]   |  _____^
[INFO] [stdout] 5 | |
[INFO] [stdout] 6 | | };
[INFO] [stdout]   | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/serializer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AddrParseError`
[INFO] [stdout]  --> src/network.rs:6:60
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::net::{TcpStream, UdpSocket, SocketAddr, Ipv6Addr, AddrParseError};
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/mget/ethernet.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ethernet::MacAddress`
[INFO] [stdout]  --> src/mget/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ethernet::MacAddress;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/threads/threads.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> src/threads/threads.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use libc::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::select`
[INFO] [stdout]  --> src/threads/render_hex.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use libc::select;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::arch::asm`
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::arch::asm;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `process` and `time`
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{mem, process, time};
[INFO] [stdout]   |                ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `rand` and `unshare`
[INFO] [stdout]   --> src/hardware_interrupt/interrupt.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | use libc::{raise, rand, SIG_DFL, SIG_IGN, signal, SIGTERM, SIGUSR1, unshare};
[INFO] [stdout]    |                   ^^^^                                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `#![feature]` attribute can only be used at the crate root
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the crate root is at `src/main.rs`
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `#![feature]` attribute can only be used at the crate root
[INFO] [stdout]  --> src/hardware_interrupt/interrupt.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(link_llvm_intrinsics)]//为了使用setjmp和longjmp所需要用到的注解
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the crate root is at `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clx`
[INFO] [stdout]   --> src/for_loop.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let clx = Complex{ re: 2.1, im: -1.2}; //rust不支持构造函数，可以使用此语法来分配初始值
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_clx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/type_declaration.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let i : i8 = 100;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/type_declaration.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let i : i16 = 100;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let i : i32 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let i : i64 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let i : u8 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let i : u16 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let i : u32 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let i : u64 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let i:f32 = 100.0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let i:f64 = 100.0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let i:isize = 100; //原生映射与当前CPU位宽相同宽度的整数类型，32位CPU就是32位 64位CPU就是64位
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let i:usize = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/type_declaration.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let c = 100i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/type_declaration.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let d = 100_i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array4`
[INFO] [stdout]  --> src/array.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let array4: [i32; 4] = [1, 2, 3, 4];
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_array4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/file.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut reader: BufReader<File> = BufReader::new(f);
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/memory.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let a = 40;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b` is assigned to, but never used
[INFO] [stdout]   --> src/memory.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let b: String;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_b` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `c` is assigned to, but never used
[INFO] [stdout]   --> src/memory.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let c: Cow<str>;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_c` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/memory.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         b = String::from_raw_parts(b_ptr, 10, 10);
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/memory.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         c = CStr::from_ptr(c_ptr).to_string_lossy();
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/memory.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let str: String = String::from("value");
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/windows.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/action_kv.rs:171:12
[INFO] [stdout]     |
[INFO] [stdout] 171 |         Ok(r) => println!("seek is {}", br.read_u8().unwrap()),
[INFO] [stdout]     |            ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/network.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let f = File::open("./Cargo.toml").map_err(UpstreamError::IO);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]  --> src/mget/mget.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let addr = MacAddress::new();    
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/mget/http.rs:47:53
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn get(tap: TapInterface, mac: EthernetAddress, addr: IpAddr, url: Url) -> Result<(), UpstreamError>{
[INFO] [stdout]    |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `http_header`
[INFO] [stdout]   --> src/mget/http.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let http_header = format!("GET {} HTTP/1.0 \r\nHost: {}\r\nConnection: close\r\n\r\n", url.path(), domain_name);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_http_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add`
[INFO] [stdout]  --> src/threads/threads.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let add = |a: usize, b: usize| { a + b + c };
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_add`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> src/threads/threads.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let handler = thread::spawn(move || {
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clx`
[INFO] [stdout]   --> src/for_loop.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let clx = Complex{ re: 2.1, im: -1.2}; //rust不支持构造函数，可以使用此语法来分配初始值
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_clx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/type_declaration.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let i : i8 = 100;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/type_declaration.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let i : i16 = 100;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let i : i32 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let i : i64 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let i : u8 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let i : u16 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let i : u32 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let i : u64 = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let i:f32 = 100.0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let i:f64 = 100.0;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let i:isize = 100; //原生映射与当前CPU位宽相同宽度的整数类型，32位CPU就是32位 64位CPU就是64位
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/type_declaration.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let i:usize = 100;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/type_declaration.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let c = 100i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/type_declaration.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let d = 100_i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array4`
[INFO] [stdout]  --> src/array.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let array4: [i32; 4] = [1, 2, 3, 4];
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_array4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/file.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut reader: BufReader<File> = BufReader::new(f);
[INFO] [stdout]   |         ----^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/memory.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let a = 40;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b` is assigned to, but never used
[INFO] [stdout]   --> src/memory.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let b: String;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_b` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] 197 |         SIGALRM => false,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `c` is assigned to, but never used
[INFO] [stdout]   --> src/memory.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let c: Cow<str>;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_c` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] 197 |         SIGALRM => false,
[INFO] [stdout] 198 |         SIGTERM => true,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/memory.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         b = String::from_raw_parts(b_ptr, 10, 10);
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 199 |         SIGQUIT => true,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/memory.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         c = CStr::from_ptr(c_ptr).to_string_lossy();
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 200 |         SIGUSR1 => true,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 201 |         _ => false
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SIGHUP`
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_SIGHUP`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SIGALRM`
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         SIGALRM => false,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SIGALRM`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SIGQUIT`
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         SIGQUIT => true,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SIGQUIT`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `str`
[INFO] [stdout]   --> src/memory.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let str: String = String::from("value");
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/windows.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/action_kv.rs:171:12
[INFO] [stdout]     |
[INFO] [stdout] 171 |         Ok(r) => println!("seek is {}", br.read_u8().unwrap()),
[INFO] [stdout]     |            ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello` (bin "hello") due to 2 previous errors; 57 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/network.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let f = File::open("./Cargo.toml").map_err(UpstreamError::IO);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]  --> src/mget/mget.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let addr = MacAddress::new();    
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/mget/http.rs:47:53
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn get(tap: TapInterface, mac: EthernetAddress, addr: IpAddr, url: Url) -> Result<(), UpstreamError>{
[INFO] [stdout]    |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `http_header`
[INFO] [stdout]   --> src/mget/http.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let http_header = format!("GET {} HTTP/1.0 \r\nHost: {}\r\nConnection: close\r\n\r\n", url.path(), domain_name);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_http_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add`
[INFO] [stdout]  --> src/threads/threads.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let add = |a: usize, b: usize| { a + b + c };
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_add`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]  --> src/threads/threads.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let handler = thread::spawn(move || {
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] 197 |         SIGALRM => false,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] 197 |         SIGALRM => false,
[INFO] [stdout] 198 |         SIGTERM => true,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 199 |         SIGQUIT => true,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 200 |         SIGUSR1 => true,
[INFO] [stdout]     |         ^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 201 |         _ => false
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SIGHUP`
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         SIGHUP => false,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_SIGHUP`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SIGALRM`
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         SIGALRM => false,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SIGALRM`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SIGQUIT`
[INFO] [stdout]    --> src/hardware_interrupt/interrupt.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         SIGQUIT => true,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SIGQUIT`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello` (bin "hello" test) due to 2 previous errors; 57 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419", kill_on_drop: false }`
[INFO] [stdout] 9c5e23dc237127f6dd81e9680087d65d11da3f0fbbe06802db540f3d762bc419
