[INFO] cloning repository https://github.com/ipChrisLee/BJTU_OS_Projects
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ipChrisLee/BJTU_OS_Projects" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FipChrisLee%2FBJTU_OS_Projects", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FipChrisLee%2FBJTU_OS_Projects'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3621fed0edc45fd3dc1d9ada0a71cd0cc9012cb8
[INFO] testing ipChrisLee/BJTU_OS_Projects against 1.86.0 for beta-1.87-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FipChrisLee%2FBJTU_OS_Projects" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ipChrisLee/BJTU_OS_Projects on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ipChrisLee/BJTU_OS_Projects
[INFO] finished tweaking git repo https://github.com/ipChrisLee/BJTU_OS_Projects
[INFO] tweaked toml for git repo https://github.com/ipChrisLee/BJTU_OS_Projects written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ipChrisLee/BJTU_OS_Projects 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" "+1.86.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca05f96e799eb25ad87757a3fed823689c40c087471c036c04c60651d9a1375b
[INFO] running `Command { std: "docker" "start" "-a" "ca05f96e799eb25ad87757a3fed823689c40c087471c036c04c60651d9a1375b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca05f96e799eb25ad87757a3fed823689c40c087471c036c04c60651d9a1375b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca05f96e799eb25ad87757a3fed823689c40c087471c036c04c60651d9a1375b", kill_on_drop: false }`
[INFO] [stdout] ca05f96e799eb25ad87757a3fed823689c40c087471c036c04c60651d9a1375b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5c2642f9ef5f970529fce41519a0b71863a507b397998690c1583675ab48a3d
[INFO] running `Command { std: "docker" "start" "-a" "b5c2642f9ef5f970529fce41519a0b71863a507b397998690c1583675ab48a3d", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
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[INFO] [stderr]    Compiling serde v1.0.144
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[INFO] [stderr]    Compiling rustc_version v0.4.0
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[INFO] [stderr]    Compiling pin-project-lite v0.2.9
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[INFO] [stderr]    Compiling event-listener v2.5.3
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[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling parking v2.0.0
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[INFO] [stderr]    Compiling futures-io v0.3.25
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[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling async-channel v1.7.1
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling async-task v4.3.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling intmap v0.7.1
[INFO] [stderr]    Compiling to_method v1.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling spinning v0.1.0
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[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling nix v0.25.0
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling chrono v0.4.22
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling blocking v1.2.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling serde-value v0.6.0
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling shared_memory v0.12.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]    Compiling thiserror v1.0.34
[INFO] [stderr]    Compiling pest v2.3.1
[INFO] [stderr]    Compiling pest_meta v2.3.1
[INFO] [stderr]    Compiling pest_generator v2.3.1
[INFO] [stderr]    Compiling log4rs v0.10.0
[INFO] [stderr]    Compiling pest_derive v2.3.1
[INFO] [stderr]    Compiling lee_shell v0.1.0 (/opt/rustwide/workdir/lee_shell)
[INFO] [stderr]    Compiling ipc_practice v0.1.0 (/opt/rustwide/workdir/ipc_practice)
[INFO] [stderr]    Compiling multi_thread_programming v0.1.0 (/opt/rustwide/workdir/multi_thread_programming)
[INFO] [stdout] warning: unused imports: `io::stdin` and `thread::spawn`
[INFO] [stdout]  --> multi_thread_programming/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::stdin,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     sync::{Arc, Mutex},
[INFO] [stdout] 7 |     thread::spawn,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::info`
[INFO] [stdout]  --> ipc_practice/src/connect_duplex_pipe.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::info;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::errno::Errno`
[INFO] [stdout]  --> ipc_practice/src/connect_duplex_pipe.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nix::errno::Errno;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> ipc_practice/src/connect_duplex_pipe.rs:7:44
[INFO] [stdout]   |
[INFO] [stdout] 7 |     close, dup2, fork, mkfifo, pipe, read, sleep, write,
[INFO] [stdout]   |                                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::CString`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::ffi::CString;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io::{stdin, stdout};
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::char::ParseCharError`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::char::ParseCharError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{stdin, stdout};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::stat::fstat`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use nix::sys::stat::fstat;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]   --> ipc_practice/src/connect_with_pipe.rs:13:50
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::unistd::{close, dup2, fork, pipe, read, sleep, write};
[INFO] [stdout]    |                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shmem`
[INFO] [stdout]  --> ipc_practice/src/connect_with_shmem.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 | use shared_memory::{Shmem, ShmemConf};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> ipc_practice/src/connect_with_shmem.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Context`
[INFO] [stdout]  --> ipc_practice/src/connect_with_socket.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use anyhow::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `interprocess::local_socket`
[INFO] [stdout]  --> ipc_practice/src/connect_with_socket.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use interprocess::local_socket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `close`, `dup2`, `pipe`, `read`, and `write`
[INFO] [stdout]  --> ipc_practice/src/connect_with_socket.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{close, dup2, fork, pipe, read, write};
[INFO] [stdout]   |                   ^^^^^  ^^^^        ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::mpsc::Sender`
[INFO] [stdout]   --> ipc_practice/src/connect_with_socket.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     sync::mpsc::Sender,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OFlag` and `open`
[INFO] [stdout]   --> ipc_practice/src/main.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | use nix::fcntl::{open, OFlag};
[INFO] [stdout]    |                  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::socket`
[INFO] [stdout]   --> ipc_practice/src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::sys::socket;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::stat::Mode`
[INFO] [stdout]   --> ipc_practice/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use nix::sys::stat::Mode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `wait` and `waitpid`
[INFO] [stdout]   --> ipc_practice/src/main.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 | use nix::sys::wait::{wait, waitpid};
[INFO] [stdout]    |                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Child` and `Parent`
[INFO] [stdout]   --> ipc_practice/src/main.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 | use nix::unistd::ForkResult::{Child, Parent};
[INFO] [stdout]    |                               ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `close`, `dup2`, `fork`, `pipe`, and `write`
[INFO] [stdout]   --> ipc_practice/src/main.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | use nix::unistd::{close, dup2, fork, pipe, write};
[INFO] [stdout]    |                   ^^^^^  ^^^^  ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> ipc_practice/src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Args`
[INFO] [stdout]   --> ipc_practice/src/main.rs:19:22
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::env::{args, Args};
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]   --> ipc_practice/src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]   --> ipc_practice/src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::process::exit;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> lee_shell/src/command.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CmdType`, `Command`, and `self`
[INFO] [stdout]  --> lee_shell/src/history.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::command::{self, CmdType, Command, CommandGroup};
[INFO] [stdout]   |                      ^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::kernel::Kernel`
[INFO] [stdout]  --> lee_shell/src/history.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::kernel::Kernel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Command` and `self`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::command::{self, Command};
[INFO] [stdout]   |                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `current_dir`, `set_current_dir`, and `var`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::env::{current_dir, set_current_dir, var};
[INFO] [stdout]   |                ^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{convert, env};
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> lee_shell/src/runner.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::command::{self, CmdType, Command, CommandGroup};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> lee_shell/src/runner.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::kernel::{self, Kernel};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::errno::Errno`
[INFO] [stdout]  --> lee_shell/src/runner.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::errno::Errno;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OFlag` and `open`
[INFO] [stdout]  --> lee_shell/src/runner.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use nix::fcntl::{open, OFlag};
[INFO] [stdout]   |                  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::stat::Mode`
[INFO] [stdout]  --> lee_shell/src/runner.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use nix::sys::stat::Mode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait`
[INFO] [stdout]   --> lee_shell/src/runner.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nix::sys::wait::{wait, waitpid};
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `chdir` and `execvp`
[INFO] [stdout]   --> lee_shell/src/runner.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | use nix::unistd::{chdir, close, dup, dup2, execv, execvp, fork};
[INFO] [stdout]    |                   ^^^^^                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ForkResult`
[INFO] [stdout]   --> lee_shell/src/runner.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::unistd::{pipe, ForkResult, Pid};
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CStr`
[INFO] [stdout]   --> lee_shell/src/runner.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::ffi::{CStr, CString};
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]   --> lee_shell/src/runner.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]   --> lee_shell/src/runner.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::path::{Path, PathBuf};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::history::History`
[INFO] [stdout]  --> lee_shell/src/ui.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::history::History;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `VecDeque`
[INFO] [stdout]  --> lee_shell/src/ui.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `set_current_dir`
[INFO] [stdout]  --> lee_shell/src/ui.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::{current_dir, set_current_dir};
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `stderr`
[INFO] [stdout]  --> lee_shell/src/ui.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{stderr, stdin, stdout, Read, Write};
[INFO] [stdout]   |               ^^^^^^                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> lee_shell/src/ui.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::info`
[INFO] [stdout]   --> lee_shell/src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use log::info;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:53:31
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     if let Ok(len) = write(fd_p2c_write, &in_buf[0..buffered_len]) {
[INFO] [stdout]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     let len = write(fout, &lower_pipe_buf[0..len]).unwrap();
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> ipc_practice/src/connect_duplex_pipe.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let p = pipe().unwrap();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ipc_practice/src/connect_with_socket.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut len = {
[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: value assigned to `s` is never read
[INFO] [stdout]    --> lee_shell/src/command.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |             let mut s = String::new();
[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: `kernel`
[INFO] [stdout]   --> lee_shell/src/runner.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn run_outer_command_in_place(kernel: &Kernel, cmd_name: String, args: Vec<String>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kernel`
[INFO] [stdout]    --> lee_shell/src/runner.rs:102:34
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn run_spec_exe_command_in_place(kernel: &Kernel, cmd_name: String, args: Vec<String>) {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]    --> lee_shell/src/command.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 88  | impl CommandGroup {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.39s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0, typemap v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b5c2642f9ef5f970529fce41519a0b71863a507b397998690c1583675ab48a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5c2642f9ef5f970529fce41519a0b71863a507b397998690c1583675ab48a3d", kill_on_drop: false }`
[INFO] [stdout] b5c2642f9ef5f970529fce41519a0b71863a507b397998690c1583675ab48a3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 985bc25507ce8514e13ea8a861d61fc8e58876331a2748ac5d04f6561bb73436
[INFO] running `Command { std: "docker" "start" "-a" "985bc25507ce8514e13ea8a861d61fc8e58876331a2748ac5d04f6561bb73436", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling multi_thread_programming v0.1.0 (/opt/rustwide/workdir/multi_thread_programming)
[INFO] [stderr]    Compiling ipc_practice v0.1.0 (/opt/rustwide/workdir/ipc_practice)
[INFO] [stderr]    Compiling lee_shell v0.1.0 (/opt/rustwide/workdir/lee_shell)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> lee_shell/src/command.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CmdType`, `Command`, and `self`
[INFO] [stdout]  --> lee_shell/src/history.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::command::{self, CmdType, Command, CommandGroup};
[INFO] [stdout]   |                      ^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::kernel::Kernel`
[INFO] [stdout]  --> lee_shell/src/history.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::kernel::Kernel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Command` and `self`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::command::{self, Command};
[INFO] [stdout]   |                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `current_dir`, `set_current_dir`, and `var`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::env::{current_dir, set_current_dir, var};
[INFO] [stdout]   |                ^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert`
[INFO] [stdout]  --> lee_shell/src/kernel.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{convert, env};
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> lee_shell/src/runner.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::command::{self, CmdType, Command, CommandGroup};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> lee_shell/src/runner.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::kernel::{self, Kernel};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::errno::Errno`
[INFO] [stdout]  --> lee_shell/src/runner.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::errno::Errno;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OFlag` and `open`
[INFO] [stdout]  --> lee_shell/src/runner.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use nix::fcntl::{open, OFlag};
[INFO] [stdout]   |                  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::stat::Mode`
[INFO] [stdout]  --> lee_shell/src/runner.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use nix::sys::stat::Mode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wait`
[INFO] [stdout]   --> lee_shell/src/runner.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nix::sys::wait::{wait, waitpid};
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `chdir` and `execvp`
[INFO] [stdout]   --> lee_shell/src/runner.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | use nix::unistd::{chdir, close, dup, dup2, execv, execvp, fork};
[INFO] [stdout]    |                   ^^^^^                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ForkResult`
[INFO] [stdout]   --> lee_shell/src/runner.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::unistd::{pipe, ForkResult, Pid};
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CStr`
[INFO] [stdout]   --> lee_shell/src/runner.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::ffi::{CStr, CString};
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]   --> lee_shell/src/runner.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]   --> lee_shell/src/runner.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::path::{Path, PathBuf};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::history::History`
[INFO] [stdout]  --> lee_shell/src/ui.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::history::History;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `VecDeque`
[INFO] [stdout]  --> lee_shell/src/ui.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `set_current_dir`
[INFO] [stdout]  --> lee_shell/src/ui.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::{current_dir, set_current_dir};
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `stderr`
[INFO] [stdout]  --> lee_shell/src/ui.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{stderr, stdin, stdout, Read, Write};
[INFO] [stdout]   |               ^^^^^^                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> lee_shell/src/ui.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::info`
[INFO] [stdout]   --> lee_shell/src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use log::info;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io::stdin` and `thread::spawn`
[INFO] [stdout]  --> multi_thread_programming/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::stdin,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     sync::{Arc, Mutex},
[INFO] [stdout] 7 |     thread::spawn,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::info`
[INFO] [stdout]  --> ipc_practice/src/connect_duplex_pipe.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::info;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::errno::Errno`
[INFO] [stdout]  --> ipc_practice/src/connect_duplex_pipe.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nix::errno::Errno;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> ipc_practice/src/connect_duplex_pipe.rs:7:44
[INFO] [stdout]   |
[INFO] [stdout] 7 |     close, dup2, fork, mkfifo, pipe, read, sleep, write,
[INFO] [stdout]   |                                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::CString`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::ffi::CString;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io::{stdin, stdout};
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::char::ParseCharError`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::char::ParseCharError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stdout`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{stdin, stdout};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::stat::fstat`
[INFO] [stdout]  --> ipc_practice/src/connect_with_pipe.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use nix::sys::stat::fstat;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]   --> ipc_practice/src/connect_with_pipe.rs:13:50
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::unistd::{close, dup2, fork, pipe, read, sleep, write};
[INFO] [stdout]    |                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shmem`
[INFO] [stdout]  --> ipc_practice/src/connect_with_shmem.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 | use shared_memory::{Shmem, ShmemConf};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::spawn`
[INFO] [stdout]   --> ipc_practice/src/connect_with_shmem.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::thread::spawn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Context`
[INFO] [stdout]  --> ipc_practice/src/connect_with_socket.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use anyhow::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `interprocess::local_socket`
[INFO] [stdout]  --> ipc_practice/src/connect_with_socket.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use interprocess::local_socket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `close`, `dup2`, `pipe`, `read`, and `write`
[INFO] [stdout]  --> ipc_practice/src/connect_with_socket.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{close, dup2, fork, pipe, read, write};
[INFO] [stdout]   |                   ^^^^^  ^^^^        ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::mpsc::Sender`
[INFO] [stdout]   --> ipc_practice/src/connect_with_socket.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     sync::mpsc::Sender,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OFlag` and `open`
[INFO] [stdout]   --> ipc_practice/src/main.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | use nix::fcntl::{open, OFlag};
[INFO] [stdout]    |                  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::socket`
[INFO] [stdout]   --> ipc_practice/src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::sys::socket;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::stat::Mode`
[INFO] [stdout]   --> ipc_practice/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use nix::sys::stat::Mode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `wait` and `waitpid`
[INFO] [stdout]   --> ipc_practice/src/main.rs:15:22
[INFO] [stdout]    |
[INFO] [stdout] 15 | use nix::sys::wait::{wait, waitpid};
[INFO] [stdout]    |                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Child` and `Parent`
[INFO] [stdout]   --> ipc_practice/src/main.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 | use nix::unistd::ForkResult::{Child, Parent};
[INFO] [stdout]    |                               ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `close`, `dup2`, `fork`, `pipe`, and `write`
[INFO] [stdout]   --> ipc_practice/src/main.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | use nix::unistd::{close, dup2, fork, pipe, write};
[INFO] [stdout]    |                   ^^^^^  ^^^^  ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> ipc_practice/src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Args`
[INFO] [stdout]   --> ipc_practice/src/main.rs:19:22
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::env::{args, Args};
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]   --> ipc_practice/src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]   --> ipc_practice/src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::process::exit;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:53:31
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     if let Ok(len) = write(fd_p2c_write, &in_buf[0..buffered_len]) {
[INFO] [stdout]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     let len = write(fout, &lower_pipe_buf[0..len]).unwrap();
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> ipc_practice/src/connect_duplex_pipe.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> ipc_practice/src/connect_duplex_pipe.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let p = pipe().unwrap();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]    --> lee_shell/src/command.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |             let mut s = String::new();
[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: variable does not need to be mutable
[INFO] [stdout]   --> ipc_practice/src/connect_with_socket.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut len = {
[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: `kernel`
[INFO] [stdout]   --> lee_shell/src/runner.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn run_outer_command_in_place(kernel: &Kernel, cmd_name: String, args: Vec<String>) {
[INFO] [stdout]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kernel`
[INFO] [stdout]    --> lee_shell/src/runner.rs:102:34
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn run_spec_exe_command_in_place(kernel: &Kernel, cmd_name: String, args: Vec<String>) {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]    --> lee_shell/src/command.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 88  | impl CommandGroup {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0, typemap v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "985bc25507ce8514e13ea8a861d61fc8e58876331a2748ac5d04f6561bb73436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "985bc25507ce8514e13ea8a861d61fc8e58876331a2748ac5d04f6561bb73436", kill_on_drop: false }`
[INFO] [stdout] 985bc25507ce8514e13ea8a861d61fc8e58876331a2748ac5d04f6561bb73436
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c1253df54db31a1b1332551c0fd4855633bd96e99e234bc812e5b4b26e1c4f3c
[INFO] running `Command { std: "docker" "start" "-a" "c1253df54db31a1b1332551c0fd4855633bd96e99e234bc812e5b4b26e1c4f3c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: unused imports: `io::stdin` and `thread::spawn`
[INFO] [stderr]  --> multi_thread_programming/src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     io::stdin,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 6 |     sync::{Arc, Mutex},
[INFO] [stderr] 7 |     thread::spawn,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `multi_thread_programming` (bin "multi_thread_programming" test) generated 1 warning (run `cargo fix --bin "multi_thread_programming" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> lee_shell/src/command.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CmdType`, `Command`, and `self`
[INFO] [stderr]  --> lee_shell/src/history.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::command::{self, CmdType, Command, CommandGroup};
[INFO] [stderr]   |                      ^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::kernel::Kernel`
[INFO] [stderr]  --> lee_shell/src/history.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::kernel::Kernel;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Command` and `self`
[INFO] [stderr]  --> lee_shell/src/kernel.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::command::{self, Command};
[INFO] [stderr]   |                      ^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `current_dir`, `set_current_dir`, and `var`
[INFO] [stderr]  --> lee_shell/src/kernel.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::env::{current_dir, set_current_dir, var};
[INFO] [stderr]   |                ^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::PathBuf`
[INFO] [stderr]  --> lee_shell/src/kernel.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::path::PathBuf;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `convert`
[INFO] [stderr]  --> lee_shell/src/kernel.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::{convert, env};
[INFO] [stderr]   |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> lee_shell/src/runner.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::command::{self, CmdType, Command, CommandGroup};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> lee_shell/src/runner.rs:2:21
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::kernel::{self, Kernel};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::errno::Errno`
[INFO] [stderr]  --> lee_shell/src/runner.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nix::errno::Errno;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OFlag` and `open`
[INFO] [stderr]  --> lee_shell/src/runner.rs:6:18
[INFO] [stderr]   |
[INFO] [stderr] 6 | use nix::fcntl::{open, OFlag};
[INFO] [stderr]   |                  ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::sys::stat::Mode`
[INFO] [stderr]  --> lee_shell/src/runner.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use nix::sys::stat::Mode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `wait`
[INFO] [stderr]   --> lee_shell/src/runner.rs:10:22
[INFO] [stderr]    |
[INFO] [stderr] 10 | use nix::sys::wait::{wait, waitpid};
[INFO] [stderr]    |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `chdir` and `execvp`
[INFO] [stderr]   --> lee_shell/src/runner.rs:12:19
[INFO] [stderr]    |
[INFO] [stderr] 12 | use nix::unistd::{chdir, close, dup, dup2, execv, execvp, fork};
[INFO] [stderr]    |                   ^^^^^                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ForkResult`
[INFO] [stderr]   --> lee_shell/src/runner.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 | use nix::unistd::{pipe, ForkResult, Pid};
[INFO] [stderr]    |                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CStr`
[INFO] [stderr]   --> lee_shell/src/runner.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ffi::{CStr, CString};
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]   --> lee_shell/src/runner.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::io::stdin;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]   --> lee_shell/src/runner.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::path::{Path, PathBuf};
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::history::History`
[INFO] [stderr]  --> lee_shell/src/ui.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::history::History;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `HashMap` and `VecDeque`
[INFO] [stderr]  --> lee_shell/src/ui.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                        ^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `set_current_dir`
[INFO] [stderr]  --> lee_shell/src/ui.rs:3:29
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::env::{current_dir, set_current_dir};
[INFO] [stderr]   |                             ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read` and `stderr`
[INFO] [stderr]  --> lee_shell/src/ui.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{stderr, stdin, stdout, Read, Write};
[INFO] [stderr]   |               ^^^^^^                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::PathBuf`
[INFO] [stderr]  --> lee_shell/src/ui.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::path::PathBuf;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `log::info`
[INFO] [stderr]   --> lee_shell/src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use log::info;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s` is never read
[INFO] [stderr]    --> lee_shell/src/command.rs:100:21
[INFO] [stderr]     |
[INFO] [stderr] 100 |             let mut s = String::new();
[INFO] [stderr]     |                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `kernel`
[INFO] [stderr]   --> lee_shell/src/runner.rs:87:31
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn run_outer_command_in_place(kernel: &Kernel, cmd_name: String, args: Vec<String>) {
[INFO] [stderr]    |                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `kernel`
[INFO] [stderr]    --> lee_shell/src/runner.rs:102:34
[INFO] [stderr]     |
[INFO] [stderr] 102 | fn run_spec_exe_command_in_place(kernel: &Kernel, cmd_name: String, args: Vec<String>) {
[INFO] [stderr]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_kernel`
[INFO] [stderr] 
[INFO] [stderr] warning: method `is_empty` is never used
[INFO] [stderr]    --> lee_shell/src/command.rs:113:12
[INFO] [stderr]     |
[INFO] [stderr] 88  | impl CommandGroup {
[INFO] [stderr]     | ----------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 113 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lee_shell` (bin "lee_shell" test) generated 28 warnings (run `cargo fix --bin "lee_shell" --tests` to apply 24 suggestions)
[INFO] [stderr] warning: unused import: `log::info`
[INFO] [stderr]  --> ipc_practice/src/connect_duplex_pipe.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use log::info;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::errno::Errno`
[INFO] [stderr]  --> ipc_practice/src/connect_duplex_pipe.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use nix::errno::Errno;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sleep`
[INFO] [stderr]  --> ipc_practice/src/connect_duplex_pipe.rs:7:44
[INFO] [stderr]   |
[INFO] [stderr] 7 |     close, dup2, fork, mkfifo, pipe, read, sleep, write,
[INFO] [stderr]   |                                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ffi::CString`
[INFO] [stderr]   --> ipc_practice/src/connect_duplex_pipe.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::ffi::CString;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdout`
[INFO] [stderr]   --> ipc_practice/src/connect_duplex_pipe.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{stdin, stdout};
[INFO] [stderr]    |                      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> ipc_practice/src/connect_with_pipe.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::char::ParseCharError`
[INFO] [stderr]  --> ipc_practice/src/connect_with_pipe.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::char::ParseCharError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdout`
[INFO] [stderr]  --> ipc_practice/src/connect_with_pipe.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{stdin, stdout};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> ipc_practice/src/connect_with_pipe.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> ipc_practice/src/connect_with_pipe.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::sys::stat::fstat`
[INFO] [stderr]  --> ipc_practice/src/connect_with_pipe.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use nix::sys::stat::fstat;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sleep`
[INFO] [stderr]   --> ipc_practice/src/connect_with_pipe.rs:13:50
[INFO] [stderr]    |
[INFO] [stderr] 13 | use nix::unistd::{close, dup2, fork, pipe, read, sleep, write};
[INFO] [stderr]    |                                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Shmem`
[INFO] [stderr]  --> ipc_practice/src/connect_with_shmem.rs:9:21
[INFO] [stderr]   |
[INFO] [stderr] 9 | use shared_memory::{Shmem, ShmemConf};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::spawn`
[INFO] [stderr]   --> ipc_practice/src/connect_with_shmem.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::thread::spawn;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `anyhow::Context`
[INFO] [stderr]  --> ipc_practice/src/connect_with_socket.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use anyhow::Context;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `interprocess::local_socket`
[INFO] [stderr]  --> ipc_practice/src/connect_with_socket.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use interprocess::local_socket;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `close`, `dup2`, `pipe`, `read`, and `write`
[INFO] [stderr]  --> ipc_practice/src/connect_with_socket.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use nix::unistd::{close, dup2, fork, pipe, read, write};
[INFO] [stderr]   |                   ^^^^^  ^^^^        ^^^^  ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sync::mpsc::Sender`
[INFO] [stderr]   --> ipc_practice/src/connect_with_socket.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     sync::mpsc::Sender,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OFlag` and `open`
[INFO] [stderr]   --> ipc_practice/src/main.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 | use nix::fcntl::{open, OFlag};
[INFO] [stderr]    |                  ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::sys::socket`
[INFO] [stderr]   --> ipc_practice/src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use nix::sys::socket;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::sys::stat::Mode`
[INFO] [stderr]   --> ipc_practice/src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use nix::sys::stat::Mode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `wait` and `waitpid`
[INFO] [stderr]   --> ipc_practice/src/main.rs:15:22
[INFO] [stderr]    |
[INFO] [stderr] 15 | use nix::sys::wait::{wait, waitpid};
[INFO] [stderr]    |                      ^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Child` and `Parent`
[INFO] [stderr]   --> ipc_practice/src/main.rs:16:31
[INFO] [stderr]    |
[INFO] [stderr] 16 | use nix::unistd::ForkResult::{Child, Parent};
[INFO] [stderr]    |                               ^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `close`, `dup2`, `fork`, `pipe`, and `write`
[INFO] [stderr]   --> ipc_practice/src/main.rs:17:19
[INFO] [stderr]    |
[INFO] [stderr] 17 | use nix::unistd::{close, dup2, fork, pipe, write};
[INFO] [stderr]    |                   ^^^^^  ^^^^  ^^^^  ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> ipc_practice/src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::env;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Args`
[INFO] [stderr]   --> ipc_practice/src/main.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::env::{args, Args};
[INFO] [stderr]    |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]   --> ipc_practice/src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::io::stdin;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::exit`
[INFO] [stderr]   --> ipc_practice/src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::process::exit;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> ipc_practice/src/connect_duplex_pipe.rs:53:31
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     if let Ok(len) = write(fd_p2c_write, &in_buf[0..buffered_len]) {
[INFO] [stderr]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> ipc_practice/src/connect_duplex_pipe.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     let len = write(fout, &lower_pipe_buf[0..len]).unwrap();
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> ipc_practice/src/connect_duplex_pipe.rs:76:21
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 Err(err) => {
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> ipc_practice/src/connect_duplex_pipe.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |     let p = pipe().unwrap();
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> ipc_practice/src/connect_with_socket.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut len = {
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ipc_practice` (bin "ipc_practice" test) generated 33 warnings (run `cargo fix --bin "ipc_practice" --tests` to apply 29 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0, typemap v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ipc_practice-9a0bcdc44180068e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/lee_shell-5a73972d385cb4f4)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/multi_thread_programming-da0a5ec656cb79d4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c1253df54db31a1b1332551c0fd4855633bd96e99e234bc812e5b4b26e1c4f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1253df54db31a1b1332551c0fd4855633bd96e99e234bc812e5b4b26e1c4f3c", kill_on_drop: false }`
[INFO] [stdout] c1253df54db31a1b1332551c0fd4855633bd96e99e234bc812e5b4b26e1c4f3c
