[INFO] updating cached repository Jordan-McCallum/distributed-hangman-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jordan-McCallum/distributed-hangman-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jordan-McCallum/distributed-hangman-rust" "work/ex/clippy-test-run/sources/stable/gh/Jordan-McCallum/distributed-hangman-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Jordan-McCallum/distributed-hangman-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jordan-McCallum/distributed-hangman-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Jordan-McCallum/distributed-hangman-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Jordan-McCallum/distributed-hangman-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 057928d1b45db0de35c8408a867a1a588ff95663
[INFO] sha for GitHub repo Jordan-McCallum/distributed-hangman-rust: 057928d1b45db0de35c8408a867a1a588ff95663
[INFO] validating manifest of Jordan-McCallum/distributed-hangman-rust on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Jordan-McCallum/distributed-hangman-rust on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Jordan-McCallum/distributed-hangman-rust
[INFO] finished frobbing Jordan-McCallum/distributed-hangman-rust
[INFO] frobbed toml for Jordan-McCallum/distributed-hangman-rust written to work/ex/clippy-test-run/sources/stable/gh/Jordan-McCallum/distributed-hangman-rust/Cargo.toml
[INFO] started frobbing Jordan-McCallum/distributed-hangman-rust
[INFO] finished frobbing Jordan-McCallum/distributed-hangman-rust
[INFO] frobbed toml for Jordan-McCallum/distributed-hangman-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Jordan-McCallum/distributed-hangman-rust/Cargo.toml
[INFO] crate Jordan-McCallum/distributed-hangman-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting Jordan-McCallum/distributed-hangman-rust against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Jordan-McCallum/distributed-hangman-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] de149eb217fd01e95bc3edea9cf338f34e2298afc6a918226c4685528627321e
[INFO] running `"docker" "start" "-a" "de149eb217fd01e95bc3edea9cf338f34e2298afc6a918226c4685528627321e"`
[INFO] [stderr]     Checking destributed-hangman v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]   --> src/server/lib/connection.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / pub mod connection {
[INFO] [stderr] 2  | |     use std::io::{ErrorKind, Read, Write, BufRead, BufReader};
[INFO] [stderr] 3  | |     use std::net::{TcpStream, TcpListener};
[INFO] [stderr] 4  | |     use std::sync::mpsc::{Sender, self};
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |     }
[INFO] [stderr] 84 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/server/lib/connection.rs:54:11
[INFO] [stderr]    |
[INFO] [stderr] 54 |         } return ans;
[INFO] [stderr]    |           ^^^^^^^^^^^ help: remove `return` as shown: `ans`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/server/lib/game.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / pub mod game {
[INFO] [stderr] 2 | |     pub fn play_game() {
[INFO] [stderr] 3 | |
[INFO] [stderr] 4 | |     }
[INFO] [stderr] 5 | |     
[INFO] [stderr] 6 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]   --> src/server/lib/connection.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / pub mod connection {
[INFO] [stderr] 2  | |     use std::io::{ErrorKind, Read, Write, BufRead, BufReader};
[INFO] [stderr] 3  | |     use std::net::{TcpStream, TcpListener};
[INFO] [stderr] 4  | |     use std::sync::mpsc::{Sender, self};
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |     }
[INFO] [stderr] 84 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/server/lib/connection.rs:54:11
[INFO] [stderr]    |
[INFO] [stderr] 54 |         } return ans;
[INFO] [stderr]    |           ^^^^^^^^^^^ help: remove `return` as shown: `ans`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/server/lib/game.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / pub mod game {
[INFO] [stderr] 2 | |     pub fn play_game() {
[INFO] [stderr] 3 | |
[INFO] [stderr] 4 | |     }
[INFO] [stderr] 5 | |     
[INFO] [stderr] 6 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]   --> src/client/lib/connection.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / pub mod connection {
[INFO] [stderr] 2  | |     use std::io::{self, ErrorKind, Read, Write};
[INFO] [stderr] 3  | |     use std::net::TcpStream;
[INFO] [stderr] 4  | |     use std::sync::mpsc::{self, TryRecvError, Sender};
[INFO] [stderr] ...  |
[INFO] [stderr] 82 | |     }
[INFO] [stderr] 83 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/client/lib/connection.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         return ans;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ans`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]   --> src/client/lib/game.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / pub mod game {
[INFO] [stderr] 2  | |     use std::io::{self, Read, Write};
[INFO] [stderr] 3  | |     use std::sync::mpsc::{Sender, Receiver};
[INFO] [stderr] 4  | |     use std::process::Command;
[INFO] [stderr] ...  |
[INFO] [stderr] 30 | |
[INFO] [stderr] 31 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `Write`
[INFO] [stderr]  --> src/client/lib/game.rs:2:25
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::io::{self, Read, Write};
[INFO] [stderr]   |                         ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/client/lib/game.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return line_int;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `line_int`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]  --> src/client/lib/game.rs:7:43
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn game_init(tx: &Sender<String>, rx: &Receiver<String>){
[INFO] [stderr]   |                                           ^^ help: consider using `_rx` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/client/lib/connection.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 | /         let mut ans: bool = false;
[INFO] [stderr] 80 | |         if msg.to_string() == "Success" { ans = true; }
[INFO] [stderr]    | |_______________________________________________________^ help: it is more idiomatic to write: `let <mut> ans = if msg.to_string() == "Success" { true } else { false };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]   --> src/client/lib/connection.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 |         if msg.to_string() == "Success" { ans = true; }
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: try: `msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]   --> src/client/lib/connection.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / pub mod connection {
[INFO] [stderr] 2  | |     use std::io::{self, ErrorKind, Read, Write};
[INFO] [stderr] 3  | |     use std::net::TcpStream;
[INFO] [stderr] 4  | |     use std::sync::mpsc::{self, TryRecvError, Sender};
[INFO] [stderr] ...  |
[INFO] [stderr] 82 | |     }
[INFO] [stderr] 83 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/client/lib/connection.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         return ans;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ans`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]   --> src/client/lib/game.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / pub mod game {
[INFO] [stderr] 2  | |     use std::io::{self, Read, Write};
[INFO] [stderr] 3  | |     use std::sync::mpsc::{Sender, Receiver};
[INFO] [stderr] 4  | |     use std::process::Command;
[INFO] [stderr] ...  |
[INFO] [stderr] 30 | |
[INFO] [stderr] 31 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `Write`
[INFO] [stderr]  --> src/client/lib/game.rs:2:25
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::io::{self, Read, Write};
[INFO] [stderr]   |                         ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/client/lib/game.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return line_int;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `line_int`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/server/lib/connection.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         let mut _buf = String::new();
[INFO] [stderr] 58 | |         if auth == true {_buf = "Success".trim().to_string();}
[INFO] [stderr] 59 | |         else {_buf = "Fail".trim().to_string();}
[INFO] [stderr]    | |________________________________________________^ help: it is more idiomatic to write: `let <mut> _buf = if auth == true { "Success".trim().to_string() } else { "Fail".trim().to_string() };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]   --> src/server/lib/connection.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if auth == true {_buf = "Success".trim().to_string();}
[INFO] [stderr]    |            ^^^^^^^^^^^^ help: try simplifying it as shown: `auth`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/server/lib/connection.rs:63:26
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn recieve_info(msg: &String, tx:&Sender<String>){
[INFO] [stderr]    |                          ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/server/lib/connection.rs:64:40
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let vec: Vec<&str> = msg.split("\n").collect();
[INFO] [stderr]    |                                        ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/server/lib/connection.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         let mut _buf = String::new();
[INFO] [stderr] 58 | |         if auth == true {_buf = "Success".trim().to_string();}
[INFO] [stderr] 59 | |         else {_buf = "Fail".trim().to_string();}
[INFO] [stderr]    | |________________________________________________^ help: it is more idiomatic to write: `let <mut> _buf = if auth == true { "Success".trim().to_string() } else { "Fail".trim().to_string() };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]   --> src/server/lib/connection.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if auth == true {_buf = "Success".trim().to_string();}
[INFO] [stderr]    |            ^^^^^^^^^^^^ help: try simplifying it as shown: `auth`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/server/lib/connection.rs:63:26
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn recieve_info(msg: &String, tx:&Sender<String>){
[INFO] [stderr]    |                          ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/server/lib/connection.rs:64:40
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let vec: Vec<&str> = msg.split("\n").collect();
[INFO] [stderr]    |                                        ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]  --> src/client/lib/game.rs:7:43
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn game_init(tx: &Sender<String>, rx: &Receiver<String>){
[INFO] [stderr]   |                                           ^^ help: consider using `_rx` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/client/lib/connection.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 | /         let mut ans: bool = false;
[INFO] [stderr] 80 | |         if msg.to_string() == "Success" { ans = true; }
[INFO] [stderr]    | |_______________________________________________________^ help: it is more idiomatic to write: `let <mut> ans = if msg.to_string() == "Success" { true } else { false };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]   --> src/client/lib/connection.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 |         if msg.to_string() == "Success" { ans = true; }
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: try: `msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "de149eb217fd01e95bc3edea9cf338f34e2298afc6a918226c4685528627321e"`
[INFO] running `"docker" "rm" "-f" "de149eb217fd01e95bc3edea9cf338f34e2298afc6a918226c4685528627321e"`
[INFO] [stdout] de149eb217fd01e95bc3edea9cf338f34e2298afc6a918226c4685528627321e