[INFO] updating cached repository Gisleburt/pfwd
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Gisleburt/pfwd
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Gisleburt/pfwd" "work/ex/clippy-test-run/sources/stable/gh/Gisleburt/pfwd"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Gisleburt/pfwd'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Gisleburt/pfwd" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Gisleburt/pfwd"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Gisleburt/pfwd'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eefd2a2eb59dd939529af754e31f0ef15b5439d8
[INFO] sha for GitHub repo Gisleburt/pfwd: eefd2a2eb59dd939529af754e31f0ef15b5439d8
[INFO] validating manifest of Gisleburt/pfwd 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 Gisleburt/pfwd 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 Gisleburt/pfwd
[INFO] finished frobbing Gisleburt/pfwd
[INFO] frobbed toml for Gisleburt/pfwd written to work/ex/clippy-test-run/sources/stable/gh/Gisleburt/pfwd/Cargo.toml
[INFO] started frobbing Gisleburt/pfwd
[INFO] finished frobbing Gisleburt/pfwd
[INFO] frobbed toml for Gisleburt/pfwd written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Gisleburt/pfwd/Cargo.toml
[INFO] crate Gisleburt/pfwd 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 Gisleburt/pfwd 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-6/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/Gisleburt/pfwd:/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] 456d8e41fdb31b8cfb9ba38e67f1edde329abd7fa90f6c5130938ef5d73ce7e2
[INFO] running `"docker" "start" "-a" "456d8e41fdb31b8cfb9ba38e67f1edde329abd7fa90f6c5130938ef5d73ce7e2"`
[INFO] [stderr]     Checking pfwd v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 | /     return match from_stream.read(&mut buffer) {
[INFO] [stderr] 84 | |         Ok(0) => Err(()),
[INFO] [stderr] 85 | |         Ok(_) => {
[INFO] [stderr] 86 | |             if let Err(e) = to_stream.write(&buffer) {
[INFO] [stderr] ...  |
[INFO] [stderr] 95 | |         }
[INFO] [stderr] 96 | |     }
[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] 83 |     match from_stream.read(&mut buffer) {
[INFO] [stderr] 84 |         Ok(0) => Err(()),
[INFO] [stderr] 85 |         Ok(_) => {
[INFO] [stderr] 86 |             if let Err(e) = to_stream.write(&buffer) {
[INFO] [stderr] 87 |                 eprintln!("Something bad happened writing to to_steam: {}", e);
[INFO] [stderr] 88 |                 return Err(());
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 | /     return match from_stream.read(&mut buffer) {
[INFO] [stderr] 84 | |         Ok(0) => Err(()),
[INFO] [stderr] 85 | |         Ok(_) => {
[INFO] [stderr] 86 | |             if let Err(e) = to_stream.write(&buffer) {
[INFO] [stderr] ...  |
[INFO] [stderr] 95 | |         }
[INFO] [stderr] 96 | |     }
[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] 83 |     match from_stream.read(&mut buffer) {
[INFO] [stderr] 84 |         Ok(0) => Err(()),
[INFO] [stderr] 85 |         Ok(_) => {
[INFO] [stderr] 86 |             if let Err(e) = to_stream.write(&buffer) {
[INFO] [stderr] 87 |                 eprintln!("Something bad happened writing to to_steam: {}", e);
[INFO] [stderr] 88 |                 return Err(());
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:31:25
[INFO] [stderr]    |
[INFO] [stderr] 31 | /                         match stream_to_stream_non_blocking(&incoming, &outgoing) {
[INFO] [stderr] 32 | |                             Err(_) => break,
[INFO] [stderr] 33 | |                             _ => {}
[INFO] [stderr] 34 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Err(_) = stream_to_stream_non_blocking(&incoming, &outgoing) { break }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:21
[INFO] [stderr]    |
[INFO] [stderr] 36 |                     tx1.send(());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |                     incoming.shutdown(Shutdown::Read);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |                     outgoing.shutdown(Shutdown::Write);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 | /                         match stream_to_stream_non_blocking(&outgoing2, &incoming2) {
[INFO] [stderr] 50 | |                             Err(_) => break,
[INFO] [stderr] 51 | |                             _ => {}
[INFO] [stderr] 52 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Err(_) = stream_to_stream_non_blocking(&outgoing2, &incoming2) { break }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |                     tx2.send(());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:55:21
[INFO] [stderr]    |
[INFO] [stderr] 55 |                     outgoing2.shutdown(Shutdown::Read);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:56:21
[INFO] [stderr]    |
[INFO] [stderr] 56 |                     incoming2.shutdown(Shutdown::Write);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:31:25
[INFO] [stderr]    |
[INFO] [stderr] 31 | /                         match stream_to_stream_non_blocking(&incoming, &outgoing) {
[INFO] [stderr] 32 | |                             Err(_) => break,
[INFO] [stderr] 33 | |                             _ => {}
[INFO] [stderr] 34 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Err(_) = stream_to_stream_non_blocking(&incoming, &outgoing) { break }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:21
[INFO] [stderr]    |
[INFO] [stderr] 36 |                     tx1.send(());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |                     incoming.shutdown(Shutdown::Read);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |                     outgoing.shutdown(Shutdown::Write);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 | /                         match stream_to_stream_non_blocking(&outgoing2, &incoming2) {
[INFO] [stderr] 50 | |                             Err(_) => break,
[INFO] [stderr] 51 | |                             _ => {}
[INFO] [stderr] 52 | |                         }
[INFO] [stderr]    | |_________________________^ help: try this: `if let Err(_) = stream_to_stream_non_blocking(&outgoing2, &incoming2) { break }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |                     tx2.send(());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:55:21
[INFO] [stderr]    |
[INFO] [stderr] 55 |                     outgoing2.shutdown(Shutdown::Read);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:56:21
[INFO] [stderr]    |
[INFO] [stderr] 56 |                     incoming2.shutdown(Shutdown::Write);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "456d8e41fdb31b8cfb9ba38e67f1edde329abd7fa90f6c5130938ef5d73ce7e2"`
[INFO] running `"docker" "rm" "-f" "456d8e41fdb31b8cfb9ba38e67f1edde329abd7fa90f6c5130938ef5d73ce7e2"`
[INFO] [stdout] 456d8e41fdb31b8cfb9ba38e67f1edde329abd7fa90f6c5130938ef5d73ce7e2