[INFO] crate daemon 0.0.8 is already in cache
[INFO] extracting crate daemon 0.0.8 into work/ex/clippy-test-run/sources/stable/reg/daemon/0.0.8
[INFO] extracting crate daemon 0.0.8 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/daemon/0.0.8
[INFO] validating manifest of daemon-0.0.8 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 daemon-0.0.8 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 daemon-0.0.8
[INFO] finished frobbing daemon-0.0.8
[INFO] frobbed toml for daemon-0.0.8 written to work/ex/clippy-test-run/sources/stable/reg/daemon/0.0.8/Cargo.toml
[INFO] started frobbing daemon-0.0.8
[INFO] finished frobbing daemon-0.0.8
[INFO] frobbed toml for daemon-0.0.8 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/daemon/0.0.8/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 daemon-0.0.8 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/daemon/0.0.8:/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] 085e205d24935da8f2c86855a4577dc4490770007417383a6df8961768c46b40
[INFO] running `"docker" "start" "-a" "085e205d24935da8f2c86855a4577dc4490770007417383a6df8961768c46b40"`
[INFO] [stderr]     Checking daemon v0.0.8 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/linux.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     result
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/linux.rs:67:18
[INFO] [stderr]    |
[INFO] [stderr] 67 |       let result = match singleton.lock() {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 68 | |         Ok(ref mut daemon) => func(daemon),
[INFO] [stderr] 69 | |         Err(e) => {
[INFO] [stderr] 70 | |             panic!("Mutex error: {:?}", e);
[INFO] [stderr] 71 | |         }
[INFO] [stderr] 72 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/linux.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 | /         return match daemon.holder.take_tx() {
[INFO] [stderr] 129 | |             Some(ref tx) => {
[INFO] [stderr] 130 | |                 let _ = tx.send(State::Stop);
[INFO] [stderr] 131 | |             }
[INFO] [stderr] 132 | |             None => (),
[INFO] [stderr] 133 | |         };
[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] 128 |         match daemon.holder.take_tx() {
[INFO] [stderr] 129 |             Some(ref tx) => {
[INFO] [stderr] 130 |                 let _ = tx.send(State::Stop);
[INFO] [stderr] 131 |             }
[INFO] [stderr] 132 |             None => (),
[INFO] [stderr] 133 |         }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sig`
[INFO] [stderr]    --> src/linux.rs:125:42
[INFO] [stderr]     |
[INFO] [stderr] 125 | unsafe extern "system" fn signal_handler(sig: libc::c_int) {
[INFO] [stderr]     |                                          ^^^ help: consider using `_sig` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/linux.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_unsafe)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `signal_handler`
[INFO] [stderr]    --> src/linux.rs:125:1
[INFO] [stderr]     |
[INFO] [stderr] 125 | unsafe extern "system" fn signal_handler(sig: libc::c_int) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `raise`
[INFO] [stderr]    --> src/linux.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn raise(sig: libc::c_int) -> libc::c_int;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `signal`
[INFO] [stderr]    --> src/linux.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn signal(sig: libc::c_int, handler: *const libc::c_void) -> libc::c_int;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `kill`
[INFO] [stderr]    --> src/linux.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn kill(pid: libc::pid_t, sig: libc::c_int) -> libc::c_int;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `0 as *mut _` detected. Consider using `ptr::null_mut()`
[INFO] [stderr]   --> src/linux.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 |         holder: 0 as *mut DaemonStatic
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::zero_ptr)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_ptr
[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/linux.rs:128:16
[INFO] [stderr]     |
[INFO] [stderr] 128 |           return match daemon.holder.take_tx() {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 129 | |             Some(ref tx) => {
[INFO] [stderr] 130 | |                 let _ = tx.send(State::Stop);
[INFO] [stderr] 131 | |             }
[INFO] [stderr] 132 | |             None => (),
[INFO] [stderr] 133 | |         };
[INFO] [stderr]     | |_________^
[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] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 128 |         return if let Some(ref tx) = daemon.holder.take_tx() {
[INFO] [stderr] 129 |     let _ = tx.send(State::Stop);
[INFO] [stderr] 130 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `0 as *mut _` detected. Consider using `ptr::null_mut()`
[INFO] [stderr]    --> src/linux.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     0 as *mut DaemonStatic
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_ptr
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/linux.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     result
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/linux.rs:67:18
[INFO] [stderr]    |
[INFO] [stderr] 67 |       let result = match singleton.lock() {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 68 | |         Ok(ref mut daemon) => func(daemon),
[INFO] [stderr] 69 | |         Err(e) => {
[INFO] [stderr] 70 | |             panic!("Mutex error: {:?}", e);
[INFO] [stderr] 71 | |         }
[INFO] [stderr] 72 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/linux.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 | /         return match daemon.holder.take_tx() {
[INFO] [stderr] 129 | |             Some(ref tx) => {
[INFO] [stderr] 130 | |                 let _ = tx.send(State::Stop);
[INFO] [stderr] 131 | |             }
[INFO] [stderr] 132 | |             None => (),
[INFO] [stderr] 133 | |         };
[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] 128 |         match daemon.holder.take_tx() {
[INFO] [stderr] 129 |             Some(ref tx) => {
[INFO] [stderr] 130 |                 let _ = tx.send(State::Stop);
[INFO] [stderr] 131 |             }
[INFO] [stderr] 132 |             None => (),
[INFO] [stderr] 133 |         }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sig`
[INFO] [stderr]    --> src/linux.rs:125:42
[INFO] [stderr]     |
[INFO] [stderr] 125 | unsafe extern "system" fn signal_handler(sig: libc::c_int) {
[INFO] [stderr]     |                                          ^^^ help: consider using `_sig` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/linux.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_unsafe)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `signal_handler`
[INFO] [stderr]    --> src/linux.rs:125:1
[INFO] [stderr]     |
[INFO] [stderr] 125 | unsafe extern "system" fn signal_handler(sig: libc::c_int) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `raise`
[INFO] [stderr]    --> src/linux.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn raise(sig: libc::c_int) -> libc::c_int;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `signal`
[INFO] [stderr]    --> src/linux.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn signal(sig: libc::c_int, handler: *const libc::c_void) -> libc::c_int;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `kill`
[INFO] [stderr]    --> src/linux.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn kill(pid: libc::pid_t, sig: libc::c_int) -> libc::c_int;
[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/singleton.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 | /         match simple.lock() {
[INFO] [stderr] 64 | |             Ok(_) => {}
[INFO] [stderr] 65 | |             Err(_) => {}
[INFO] [stderr] 66 | |         };
[INFO] [stderr]    | |_________^ help: try this: `if let Ok(_) = simple.lock() {}`
[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: `0 as *mut _` detected. Consider using `ptr::null_mut()`
[INFO] [stderr]   --> src/linux.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 |         holder: 0 as *mut DaemonStatic
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::zero_ptr)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_ptr
[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/linux.rs:128:16
[INFO] [stderr]     |
[INFO] [stderr] 128 |           return match daemon.holder.take_tx() {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 129 | |             Some(ref tx) => {
[INFO] [stderr] 130 | |                 let _ = tx.send(State::Stop);
[INFO] [stderr] 131 | |             }
[INFO] [stderr] 132 | |             None => (),
[INFO] [stderr] 133 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 128 |         return if let Some(ref tx) = daemon.holder.take_tx() {
[INFO] [stderr] 129 |     let _ = tx.send(State::Stop);
[INFO] [stderr] 130 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `0 as *mut _` detected. Consider using `ptr::null_mut()`
[INFO] [stderr]    --> src/linux.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     0 as *mut DaemonStatic
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_ptr
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/bin/example.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     file.write(message.as_bytes())?;
[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] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/bin/example.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     file.write(b"\n")?;
[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: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `daemon`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/bin/example.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     file.write(message.as_bytes())?;
[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] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/bin/example.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     file.write(b"\n")?;
[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: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `daemon`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "085e205d24935da8f2c86855a4577dc4490770007417383a6df8961768c46b40"`
[INFO] running `"docker" "rm" "-f" "085e205d24935da8f2c86855a4577dc4490770007417383a6df8961768c46b40"`
[INFO] [stdout] 085e205d24935da8f2c86855a4577dc4490770007417383a6df8961768c46b40