[INFO] updating cached repository StephanDollberg/PingPong
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/StephanDollberg/PingPong
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/StephanDollberg/PingPong" "work/ex/clippy-test-run/sources/stable/gh/StephanDollberg/PingPong"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/StephanDollberg/PingPong'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/StephanDollberg/PingPong" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/StephanDollberg/PingPong"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/StephanDollberg/PingPong'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5b05c035855cd772b8dbf973cbba1890e97bfb63
[INFO] sha for GitHub repo StephanDollberg/PingPong: 5b05c035855cd772b8dbf973cbba1890e97bfb63
[INFO] validating manifest of StephanDollberg/PingPong 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 StephanDollberg/PingPong 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 StephanDollberg/PingPong
[INFO] finished frobbing StephanDollberg/PingPong
[INFO] frobbed toml for StephanDollberg/PingPong written to work/ex/clippy-test-run/sources/stable/gh/StephanDollberg/PingPong/Cargo.toml
[INFO] started frobbing StephanDollberg/PingPong
[INFO] finished frobbing StephanDollberg/PingPong
[INFO] frobbed toml for StephanDollberg/PingPong written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/StephanDollberg/PingPong/Cargo.toml
[INFO] crate StephanDollberg/PingPong 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 StephanDollberg/PingPong against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/StephanDollberg/PingPong:/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" "-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] 1935504cf3fc064ca237001487e57fe624731f1f730e765c24bae827d20d5c90
[INFO] running `"docker" "start" "-a" "1935504cf3fc064ca237001487e57fe624731f1f730e765c24bae827d20d5c90"`
[INFO] [stderr]     Checking pingpong v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     return Settings{
[INFO] [stderr] 66 | |         non_blocking: matches.is_present("non_blocking"),
[INFO] [stderr] 67 | |         warm_up_count: matches.value_of("warmup_messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] 68 | |         msg_count: matches.value_of("messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] ...  |
[INFO] [stderr] 73 | |         udp: matches.is_present("udp"),
[INFO] [stderr] 74 | |     };
[INFO] [stderr]    | |______^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 65 |     Settings{
[INFO] [stderr] 66 |         non_blocking: matches.is_present("non_blocking"),
[INFO] [stderr] 67 |         warm_up_count: matches.value_of("warmup_messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] 68 |         msg_count: matches.value_of("messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] 69 |         sleep_time: matches.value_of("sleep_time").unwrap_or("0").parse::<u64>().unwrap(),
[INFO] [stderr] 70 |         ponger_addr: matches.value_of("remote").unwrap_or("localhost:10000").to_string(),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         return self.write(buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write(buf)`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         return self.read(buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.read(buf)`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         return Ok(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         return self.send(buf);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.send(buf)`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         return self.recv(buf);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.recv(buf)`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         return Ok(());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     return Settings{
[INFO] [stderr] 66 | |         non_blocking: matches.is_present("non_blocking"),
[INFO] [stderr] 67 | |         warm_up_count: matches.value_of("warmup_messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] 68 | |         msg_count: matches.value_of("messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] ...  |
[INFO] [stderr] 73 | |         udp: matches.is_present("udp"),
[INFO] [stderr] 74 | |     };
[INFO] [stderr]    | |______^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 65 |     Settings{
[INFO] [stderr] 66 |         non_blocking: matches.is_present("non_blocking"),
[INFO] [stderr] 67 |         warm_up_count: matches.value_of("warmup_messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] 68 |         msg_count: matches.value_of("messages").unwrap_or("1000").parse::<u64>().unwrap(),
[INFO] [stderr] 69 |         sleep_time: matches.value_of("sleep_time").unwrap_or("0").parse::<u64>().unwrap(),
[INFO] [stderr] 70 |         ponger_addr: matches.value_of("remote").unwrap_or("localhost:10000").to_string(),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         return self.write(buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.write(buf)`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         return self.read(buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.read(buf)`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         return Ok(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         return self.send(buf);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.send(buf)`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         return self.recv(buf);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.recv(buf)`
[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: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         return Ok(());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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: useless use of `format!`
[INFO] [stderr]   --> src/bin/ponger.rs:25:52
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let acceptor = std::net::TcpListener::bind(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/ponger.rs:33:46
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let sock = std::net::UdpSocket::bind(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/ponger.rs:34:22
[INFO] [stderr]    |
[INFO] [stderr] 34 |         sock.connect(format!("{}", settings.pinger_addr)).unwrap();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.pinger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/bin/pinger.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     return pingpong::read_busy_until_some(client, recv_buf).expect("Receiving pong failed");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `pingpong::read_busy_until_some(client, recv_buf).expect("Receiving pong failed")`
[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: unneeded return statement
[INFO] [stderr]   --> src/bin/pinger.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     return times;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `times`
[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: calling `as_bytes()` on a string literal
[INFO] [stderr]   --> src/bin/pinger.rs:29:22
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let msg: &[u8] = "Hello pong".as_bytes();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using a byte string literal instead: `b"Hello pong"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::string_lit_as_bytes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_lit_as_bytes
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/pinger.rs:65:51
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let client = std::net::TcpStream::connect(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/pinger.rs:71:48
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let client = std::net::UdpSocket::bind(format!("{}", settings.pinger_addr)).unwrap();
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.pinger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/pinger.rs:72:24
[INFO] [stderr]    |
[INFO] [stderr] 72 |         client.connect(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/ponger.rs:25:52
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let acceptor = std::net::TcpListener::bind(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/ponger.rs:33:46
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let sock = std::net::UdpSocket::bind(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/ponger.rs:34:22
[INFO] [stderr]    |
[INFO] [stderr] 34 |         sock.connect(format!("{}", settings.pinger_addr)).unwrap();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.pinger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/bin/pinger.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     return pingpong::read_busy_until_some(client, recv_buf).expect("Receiving pong failed");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `pingpong::read_busy_until_some(client, recv_buf).expect("Receiving pong failed")`
[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: unneeded return statement
[INFO] [stderr]   --> src/bin/pinger.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     return times;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `times`
[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: calling `as_bytes()` on a string literal
[INFO] [stderr]   --> src/bin/pinger.rs:29:22
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let msg: &[u8] = "Hello pong".as_bytes();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using a byte string literal instead: `b"Hello pong"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::string_lit_as_bytes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#string_lit_as_bytes
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/pinger.rs:65:51
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let client = std::net::TcpStream::connect(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/pinger.rs:71:48
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let client = std::net::UdpSocket::bind(format!("{}", settings.pinger_addr)).unwrap();
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.pinger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/bin/pinger.rs:72:24
[INFO] [stderr]    |
[INFO] [stderr] 72 |         client.connect(format!("{}", settings.ponger_addr)).unwrap();
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `settings.ponger_addr.to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `"docker" "inspect" "1935504cf3fc064ca237001487e57fe624731f1f730e765c24bae827d20d5c90"`
[INFO] running `"docker" "rm" "-f" "1935504cf3fc064ca237001487e57fe624731f1f730e765c24bae827d20d5c90"`
[INFO] [stdout] 1935504cf3fc064ca237001487e57fe624731f1f730e765c24bae827d20d5c90