[INFO] updating cached repository MishalAlajmi-psu/CS410_Rust_chatApp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MishalAlajmi-psu/CS410_Rust_chatApp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MishalAlajmi-psu/CS410_Rust_chatApp" "work/ex/clippy-test-run/sources/stable/gh/MishalAlajmi-psu/CS410_Rust_chatApp"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/MishalAlajmi-psu/CS410_Rust_chatApp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MishalAlajmi-psu/CS410_Rust_chatApp" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MishalAlajmi-psu/CS410_Rust_chatApp"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MishalAlajmi-psu/CS410_Rust_chatApp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0ff3dd8090dbc424cd916b07ac51621cec26b160
[INFO] sha for GitHub repo MishalAlajmi-psu/CS410_Rust_chatApp: 0ff3dd8090dbc424cd916b07ac51621cec26b160
[INFO] validating manifest of MishalAlajmi-psu/CS410_Rust_chatApp 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 MishalAlajmi-psu/CS410_Rust_chatApp 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 MishalAlajmi-psu/CS410_Rust_chatApp
[INFO] finished frobbing MishalAlajmi-psu/CS410_Rust_chatApp
[INFO] frobbed toml for MishalAlajmi-psu/CS410_Rust_chatApp written to work/ex/clippy-test-run/sources/stable/gh/MishalAlajmi-psu/CS410_Rust_chatApp/Cargo.toml
[INFO] started frobbing MishalAlajmi-psu/CS410_Rust_chatApp
[INFO] finished frobbing MishalAlajmi-psu/CS410_Rust_chatApp
[INFO] frobbed toml for MishalAlajmi-psu/CS410_Rust_chatApp written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MishalAlajmi-psu/CS410_Rust_chatApp/Cargo.toml
[INFO] crate MishalAlajmi-psu/CS410_Rust_chatApp 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 MishalAlajmi-psu/CS410_Rust_chatApp against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/MishalAlajmi-psu/CS410_Rust_chatApp:/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] 2e9a2ef865a09af8c2c4969c66b0c925cf67505469c3388b2baec055e00ed472
[INFO] running `"docker" "start" "-a" "2e9a2ef865a09af8c2c4969c66b0c925cf67505469c3388b2baec055e00ed472"`
[INFO] [stderr]     Checking chat_app v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/server.rs:74:40
[INFO] [stderr]    |
[INFO] [stderr] 74 |                                   if let Ok(_) = client.write(b"\n") {
[INFO] [stderr]    |  _________________________________-      ^^^^^
[INFO] [stderr] 75 | |                                     if let Ok(_) = client.flush() {
[INFO] [stderr] 76 | |                                         clientscopy.push(client);
[INFO] [stderr] 77 | |                                     }
[INFO] [stderr] 78 | |                                 }
[INFO] [stderr]    | |_________________________________- help: try this: `if client.write(b"\n").is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/server.rs:75:44
[INFO] [stderr]    |
[INFO] [stderr] 75 |                                       if let Ok(_) = client.flush() {
[INFO] [stderr]    |  _____________________________________-      ^^^^^
[INFO] [stderr] 76 | |                                         clientscopy.push(client);
[INFO] [stderr] 77 | |                                     }
[INFO] [stderr]    | |_____________________________________- help: try this: `if client.flush().is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:114:17
[INFO] [stderr]     |
[INFO] [stderr] 114 |                 writer.write(b"OK\n").unwrap();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]    --> src/server.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |                   if let Ok(_) = reader.read_line(&mut buffern) {
[INFO] [stderr]     |  _________________-      ^^^^^
[INFO] [stderr] 119 | |                     if buffern.trim() == "OK" {
[INFO] [stderr] 120 | |                         println!("Handshake: SUCCESS\n");
[INFO] [stderr] 121 | |                         return Ok(name.trim().to_string());
[INFO] [stderr] ...   |
[INFO] [stderr] 127 | |                     return Err("Error: Connection failed");
[INFO] [stderr] 128 | |                 }
[INFO] [stderr]     | |_________________- help: try this: `if reader.read_line(&mut buffern).is_ok()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/client.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         writer.write(user_id.as_bytes()).unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/server.rs:74:40
[INFO] [stderr]    |
[INFO] [stderr] 74 |                                   if let Ok(_) = client.write(b"\n") {
[INFO] [stderr]    |  _________________________________-      ^^^^^
[INFO] [stderr] 75 | |                                     if let Ok(_) = client.flush() {
[INFO] [stderr] 76 | |                                         clientscopy.push(client);
[INFO] [stderr] 77 | |                                     }
[INFO] [stderr] 78 | |                                 }
[INFO] [stderr]    | |_________________________________- help: try this: `if client.write(b"\n").is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/server.rs:75:44
[INFO] [stderr]    |
[INFO] [stderr] 75 |                                       if let Ok(_) = client.flush() {
[INFO] [stderr]    |  _____________________________________-      ^^^^^
[INFO] [stderr] 76 | |                                         clientscopy.push(client);
[INFO] [stderr] 77 | |                                     }
[INFO] [stderr]    | |_____________________________________- help: try this: `if client.flush().is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/client.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 |           if let Ok(_) = reader.read_line(&mut buffer) {
[INFO] [stderr]    |  _________-      ^^^^^
[INFO] [stderr] 51 | |             if buffer.trim() == "OK" {
[INFO] [stderr] 52 | |                 writer.write(b"OK\n").unwrap();
[INFO] [stderr] 53 | |                 writer.flush().unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 59 | |                 return Err("Error: Unable to connect");
[INFO] [stderr] 60 | |         }
[INFO] [stderr]    | |_________- help: try this: `if reader.read_line(&mut buffer).is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/client.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |                 writer.write(b"OK\n").unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/client.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |               if let Ok(_) = inp.read_line(&mut message) {
[INFO] [stderr]    |  _____________-      ^^^^^
[INFO] [stderr] 82 | |                 match send.write(message.as_bytes()) {
[INFO] [stderr] 83 | |                     Ok(_) => {
[INFO] [stderr] 84 | |                         send.flush().unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 90 | |                 }
[INFO] [stderr] 91 | |             }
[INFO] [stderr]    | |_____________- help: try this: `if inp.read_line(&mut message).is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:114:17
[INFO] [stderr]     |
[INFO] [stderr] 114 |                 writer.write(b"OK\n").unwrap();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]    --> src/server.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |                   if let Ok(_) = reader.read_line(&mut buffern) {
[INFO] [stderr]     |  _________________-      ^^^^^
[INFO] [stderr] 119 | |                     if buffern.trim() == "OK" {
[INFO] [stderr] 120 | |                         println!("Handshake: SUCCESS\n");
[INFO] [stderr] 121 | |                         return Ok(name.trim().to_string());
[INFO] [stderr] ...   |
[INFO] [stderr] 127 | |                     return Err("Error: Connection failed");
[INFO] [stderr] 128 | |                 }
[INFO] [stderr]     | |_________________- help: try this: `if reader.read_line(&mut buffern).is_ok()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/client.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         writer.write(user_id.as_bytes()).unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/client.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 |           if let Ok(_) = reader.read_line(&mut buffer) {
[INFO] [stderr]    |  _________-      ^^^^^
[INFO] [stderr] 51 | |             if buffer.trim() == "OK" {
[INFO] [stderr] 52 | |                 writer.write(b"OK\n").unwrap();
[INFO] [stderr] 53 | |                 writer.flush().unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 59 | |                 return Err("Error: Unable to connect");
[INFO] [stderr] 60 | |         }
[INFO] [stderr]    | |_________- help: try this: `if reader.read_line(&mut buffer).is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/client.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |                 writer.write(b"OK\n").unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `chat_app`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]   --> src/client.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |               if let Ok(_) = inp.read_line(&mut message) {
[INFO] [stderr]    |  _____________-      ^^^^^
[INFO] [stderr] 82 | |                 match send.write(message.as_bytes()) {
[INFO] [stderr] 83 | |                     Ok(_) => {
[INFO] [stderr] 84 | |                         send.flush().unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 90 | |                 }
[INFO] [stderr] 91 | |             }
[INFO] [stderr]    | |_____________- help: try this: `if inp.read_line(&mut message).is_ok()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `chat_app`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2e9a2ef865a09af8c2c4969c66b0c925cf67505469c3388b2baec055e00ed472"`
[INFO] running `"docker" "rm" "-f" "2e9a2ef865a09af8c2c4969c66b0c925cf67505469c3388b2baec055e00ed472"`
[INFO] [stdout] 2e9a2ef865a09af8c2c4969c66b0c925cf67505469c3388b2baec055e00ed472