[INFO] cloning repository https://github.com/Exo-poulpe/RSock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Exo-poulpe/RSock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FExo-poulpe%2FRSock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FExo-poulpe%2FRSock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4396e60dfbcc158b76c428253aba02f4a333dce
[INFO] building Exo-poulpe/RSock against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FExo-poulpe%2FRSock" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Exo-poulpe/RSock on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Exo-poulpe/RSock
[INFO] finished tweaking git repo https://github.com/Exo-poulpe/RSock
[INFO] tweaked toml for git repo https://github.com/Exo-poulpe/RSock written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Exo-poulpe/RSock 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f486efcf4c461fde94945c9d29918fc5a6de72a2c1b0ab0827f3272d7b6eee6
[INFO] running `Command { std: "docker" "start" "-a" "8f486efcf4c461fde94945c9d29918fc5a6de72a2c1b0ab0827f3272d7b6eee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f486efcf4c461fde94945c9d29918fc5a6de72a2c1b0ab0827f3272d7b6eee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f486efcf4c461fde94945c9d29918fc5a6de72a2c1b0ab0827f3272d7b6eee6", kill_on_drop: false }`
[INFO] [stdout] 8f486efcf4c461fde94945c9d29918fc5a6de72a2c1b0ab0827f3272d7b6eee6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9d8c457e67b210453e33cdae4d87ced06bd5cc1408c07d007710fb137781837
[INFO] running `Command { std: "docker" "start" "-a" "c9d8c457e67b210453e33cdae4d87ced06bd5cc1408c07d007710fb137781837", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling RSocklib v0.1.0 (/opt/rustwide/workdir/RSocklib)
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> RSocklib/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> RSocklib/src/lib.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                       ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> RSocklib/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr` and `Ipv6Addr`
[INFO] [stdout]  --> RSocklib/src/lib.rs:6:24
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> RSocklib/src/lib.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut result;
[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: `tot`
[INFO] [stdout]   --> RSocklib/src/lib.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut tot: u32 = 0;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_tot`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> RSocklib/src/lib.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut tot: u32 = 0;
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parsed_ip`
[INFO] [stdout]   --> RSocklib/src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let parsed_ip = &ip;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_ip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> RSocklib/src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let mut mask = create_mask(&cidr,&verbose);
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut v_ip = ip_to_vec(&ip);
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut v_mask = ip_to_vec(&mask);
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> RSocklib/src/lib.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let mut result : Vec<String> = Vec::new();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |     let mut vec_ip = ip_to_vec(start_ip);
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:240:9
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let mut result : Vec<String> = Vec::new();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_to_ping`
[INFO] [stdout]    --> RSocklib/src/lib.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 |     let ip_to_ping = ip.parse::<IpAddr>().unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_to_ping`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]    --> RSocklib/src/lib.rs:300:13
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut command = String::new();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `verbose`
[INFO] [stdout]    --> RSocklib/src/lib.rs:298:53
[INFO] [stdout]     |
[INFO] [stdout] 298 | fn ping(ip:&String,tx : mpsc::Sender<(String,&str)>,verbose:&bool) {
[INFO] [stdout]     |                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_verbose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:300:9
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut command = String::new();
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:301:9
[INFO] [stdout]     |
[INFO] [stdout] 301 |     let mut result : bool;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     let mut sender = (ip.to_string(),if result {"true"} else {"false"});
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RSocklib` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rsocklib`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> RSocklib/src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             tx.send(async_scan(&host, start_p, start_p + step));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let _ = tx.send(async_scan(&host, start_p, start_p + step));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `one` should have an upper case name
[INFO] [stdout]    --> RSocklib/src/lib.rs:181:11
[INFO] [stdout]     |
[INFO] [stdout] 181 |     const one : u32 = 1;
[INFO] [stdout]     |           ^^^ help: convert the identifier to upper case: `ONE`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `zero` should have an upper case name
[INFO] [stdout]    --> RSocklib/src/lib.rs:182:11
[INFO] [stdout]     |
[INFO] [stdout] 182 |     const zero : u32 = 0;
[INFO] [stdout]     |           ^^^^ help: convert the identifier to upper case: `ZERO`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> RSocklib/src/lib.rs:317:5
[INFO] [stdout]     |
[INFO] [stdout] 317 |     tx.send(sender);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let _ = tx.send(sender);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling RSock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Shutdown`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{IpAddr, Ipv4Addr, Shutdown, SocketAddr, TcpStream};
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, and `mpsc`
[INFO] [stdout]  --> src/main.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::ascii;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thread` is never read
[INFO] [stdout]    --> src/main.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             thread = matches.value_of("THREADS").expect("Fail to get value of target").parse::<u32>().expect("Fail to parse thread value");
[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: value assigned to `thread` is never read
[INFO] [stdout]    --> src/main.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             thread = default_thread_value;
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut host : String;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut thread: u32;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut verbose = matches.is_present("VERBOSE");
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `default_thread_value` should have an upper case name
[INFO] [stdout]   --> src/main.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 |     const default_thread_value : u32 = 8;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `DEFAULT_THREAD_VALUE`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `default_seconds_divisor` should have an upper case name
[INFO] [stdout]   --> src/main.rs:73:11
[INFO] [stdout]    |
[INFO] [stdout] 73 |     const default_seconds_divisor : f64 = 1_000.;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `DEFAULT_SECONDS_DIVISOR`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         app.print_help();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let _ = app.print_help();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.28s
[INFO] running `Command { std: "docker" "inspect" "c9d8c457e67b210453e33cdae4d87ced06bd5cc1408c07d007710fb137781837", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9d8c457e67b210453e33cdae4d87ced06bd5cc1408c07d007710fb137781837", kill_on_drop: false }`
[INFO] [stdout] c9d8c457e67b210453e33cdae4d87ced06bd5cc1408c07d007710fb137781837
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d76e03a61505865aff70cbe90b4c89ae66248baa41cd044dd7bb864f57ad91e
[INFO] running `Command { std: "docker" "start" "-a" "8d76e03a61505865aff70cbe90b4c89ae66248baa41cd044dd7bb864f57ad91e", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> RSocklib/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> RSocklib/src/lib.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                       ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> RSocklib/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr` and `Ipv6Addr`
[INFO] [stdout]  --> RSocklib/src/lib.rs:6:24
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> RSocklib/src/lib.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut result;
[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: `tot`
[INFO] [stdout]   --> RSocklib/src/lib.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut tot: u32 = 0;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_tot`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> RSocklib/src/lib.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut tot: u32 = 0;
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parsed_ip`
[INFO] [stdout]   --> RSocklib/src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let parsed_ip = &ip;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_ip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> RSocklib/src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let mut mask = create_mask(&cidr,&verbose);
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut v_ip = ip_to_vec(&ip);
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut v_mask = ip_to_vec(&mask);
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> RSocklib/src/lib.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let mut result : Vec<String> = Vec::new();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |     let mut vec_ip = ip_to_vec(start_ip);
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:240:9
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let mut result : Vec<String> = Vec::new();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_to_ping`
[INFO] [stdout]    --> RSocklib/src/lib.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 |     let ip_to_ping = ip.parse::<IpAddr>().unwrap();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_to_ping`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]    --> RSocklib/src/lib.rs:300:13
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut command = String::new();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `verbose`
[INFO] [stdout]    --> RSocklib/src/lib.rs:298:53
[INFO] [stdout]     |
[INFO] [stdout] 298 | fn ping(ip:&String,tx : mpsc::Sender<(String,&str)>,verbose:&bool) {
[INFO] [stdout]     |                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_verbose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:300:9
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut command = String::new();
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:301:9
[INFO] [stdout]     |
[INFO] [stdout] 301 |     let mut result : bool;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> RSocklib/src/lib.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     let mut sender = (ip.to_string(),if result {"true"} else {"false"});
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RSocklib` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rsocklib`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> RSocklib/src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             tx.send(async_scan(&host, start_p, start_p + step));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |             let _ = tx.send(async_scan(&host, start_p, start_p + step));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `one` should have an upper case name
[INFO] [stdout]    --> RSocklib/src/lib.rs:181:11
[INFO] [stdout]     |
[INFO] [stdout] 181 |     const one : u32 = 1;
[INFO] [stdout]     |           ^^^ help: convert the identifier to upper case: `ONE`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `zero` should have an upper case name
[INFO] [stdout]    --> RSocklib/src/lib.rs:182:11
[INFO] [stdout]     |
[INFO] [stdout] 182 |     const zero : u32 = 0;
[INFO] [stdout]     |           ^^^^ help: convert the identifier to upper case: `ZERO`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> RSocklib/src/lib.rs:317:5
[INFO] [stdout]     |
[INFO] [stdout] 317 |     tx.send(sender);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 317 |     let _ = tx.send(sender);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling RSock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Shutdown`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{IpAddr, Ipv4Addr, Shutdown, SocketAddr, TcpStream};
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, and `mpsc`
[INFO] [stdout]  --> src/main.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::ascii;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `thread` is never read
[INFO] [stdout]    --> src/main.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             thread = matches.value_of("THREADS").expect("Fail to get value of target").parse::<u32>().expect("Fail to parse thread value");
[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: value assigned to `thread` is never read
[INFO] [stdout]    --> src/main.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             thread = default_thread_value;
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut host : String;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut thread: u32;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut verbose = matches.is_present("VERBOSE");
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `default_thread_value` should have an upper case name
[INFO] [stdout]   --> src/main.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 |     const default_thread_value : u32 = 8;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `DEFAULT_THREAD_VALUE`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `default_seconds_divisor` should have an upper case name
[INFO] [stdout]   --> src/main.rs:73:11
[INFO] [stdout]    |
[INFO] [stdout] 73 |     const default_seconds_divisor : f64 = 1_000.;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `DEFAULT_SECONDS_DIVISOR`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         app.print_help();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let _ = app.print_help();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "8d76e03a61505865aff70cbe90b4c89ae66248baa41cd044dd7bb864f57ad91e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d76e03a61505865aff70cbe90b4c89ae66248baa41cd044dd7bb864f57ad91e", kill_on_drop: false }`
[INFO] [stdout] 8d76e03a61505865aff70cbe90b4c89ae66248baa41cd044dd7bb864f57ad91e