[INFO] updating cached repository ubnt-intrepid/rwm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ubnt-intrepid/rwm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ubnt-intrepid/rwm" "work/ex/clippy-test-run/sources/stable/gh/ubnt-intrepid/rwm"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ubnt-intrepid/rwm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ubnt-intrepid/rwm" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ubnt-intrepid/rwm"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ubnt-intrepid/rwm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c115ed0ae68d9fa0d3a7b472429699d03de385dc
[INFO] sha for GitHub repo ubnt-intrepid/rwm: c115ed0ae68d9fa0d3a7b472429699d03de385dc
[INFO] validating manifest of ubnt-intrepid/rwm 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 ubnt-intrepid/rwm 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 ubnt-intrepid/rwm
[INFO] finished frobbing ubnt-intrepid/rwm
[INFO] frobbed toml for ubnt-intrepid/rwm written to work/ex/clippy-test-run/sources/stable/gh/ubnt-intrepid/rwm/Cargo.toml
[INFO] started frobbing ubnt-intrepid/rwm
[INFO] finished frobbing ubnt-intrepid/rwm
[INFO] frobbed toml for ubnt-intrepid/rwm written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ubnt-intrepid/rwm/Cargo.toml
[INFO] crate ubnt-intrepid/rwm 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 ubnt-intrepid/rwm against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/ubnt-intrepid/rwm:/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] b203399c2437fc3cc5cdad85655c7f0c10d916a08566cdb22c66539c16f5b82d
[INFO] running `"docker" "start" "-a" "b203399c2437fc3cc5cdad85655c7f0c10d916a08566cdb22c66539c16f5b82d"`
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]    Compiling x11 v2.12.1
[INFO] [stderr]     Checking rwm v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/backend.rs:97:7
[INFO] [stderr]    |
[INFO] [stderr] 97 |       display: display,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: replace it with: `display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/backend.rs:98:7
[INFO] [stderr]    |
[INFO] [stderr] 98 |       root: root,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `root`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/backend.rs:99:7
[INFO] [stderr]    |
[INFO] [stderr] 99 |       gc: gc,
[INFO] [stderr]    |       ^^^^^^ help: replace it with: `gc`
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/backend.rs:97:7
[INFO] [stderr]    |
[INFO] [stderr] 97 |       display: display,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: replace it with: `display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/backend.rs:98:7
[INFO] [stderr]    |
[INFO] [stderr] 98 |       root: root,
[INFO] [stderr]    |       ^^^^^^^^^^ help: replace it with: `root`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/backend.rs:99:7
[INFO] [stderr]    |
[INFO] [stderr] 99 |       gc: gc,
[INFO] [stderr]    |       ^^^^^^ help: replace it with: `gc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/backend.rs:100:7
[INFO] [stderr]     |
[INFO] [stderr] 100 |       font: font,
[INFO] [stderr]     |       ^^^^^^^^^^ help: replace it with: `font`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/backend.rs:102:7
[INFO] [stderr]     |
[INFO] [stderr] 102 |       bg: bg,
[INFO] [stderr]     |       ^^^^^^ help: replace it with: `bg`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/backend.rs:103:7
[INFO] [stderr]     |
[INFO] [stderr] 103 |       bd: bd,
[INFO] [stderr]     |       ^^^^^^ help: replace it with: `bd`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:38:7
[INFO] [stderr]    |
[INFO] [stderr] 38 |       window: window,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `window`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:39:7
[INFO] [stderr]    |
[INFO] [stderr] 39 |       frame: frame,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `frame`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |       ignore_unmap: ignore_unmap,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `ignore_unmap`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:41:7
[INFO] [stderr]    |
[INFO] [stderr] 41 |       title_height: title_height,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `title_height`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:42:7
[INFO] [stderr]    |
[INFO] [stderr] 42 |       ws: ws,
[INFO] [stderr]    |       ^^^^^^ help: replace it with: `ws`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/backend.rs:100:7
[INFO] [stderr]     |
[INFO] [stderr] 100 |       font: font,
[INFO] [stderr]     |       ^^^^^^^^^^ help: replace it with: `font`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/backend.rs:102:7
[INFO] [stderr]     |
[INFO] [stderr] 102 |       bg: bg,
[INFO] [stderr]     |       ^^^^^^ help: replace it with: `bg`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/backend.rs:103:7
[INFO] [stderr]     |
[INFO] [stderr] 103 |       bd: bd,
[INFO] [stderr]     |       ^^^^^^ help: replace it with: `bd`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:38:7
[INFO] [stderr]    |
[INFO] [stderr] 38 |       window: window,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `window`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:39:7
[INFO] [stderr]    |
[INFO] [stderr] 39 |       frame: frame,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `frame`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |       ignore_unmap: ignore_unmap,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `ignore_unmap`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:41:7
[INFO] [stderr]    |
[INFO] [stderr] 41 |       title_height: title_height,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `title_height`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/env.rs:42:7
[INFO] [stderr]    |
[INFO] [stderr] 42 |       ws: ws,
[INFO] [stderr]    |       ^^^^^^ help: replace it with: `ws`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] error: you are getting the inner pointer of a temporary `CString`
[INFO] [stderr]   --> src/backend.rs:81:30
[INFO] [stderr]    |
[INFO] [stderr] 81 |                              CString::new("black").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::temporary_cstring_as_ptr)] on by default
[INFO] [stderr]    = note: that pointer will be invalid outside this expression
[INFO] [stderr] help: assign the `CString` to a variable to extend its lifetime
[INFO] [stderr]   --> src/backend.rs:81:30
[INFO] [stderr]    |
[INFO] [stderr] 81 |                              CString::new("black").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
[INFO] [stderr] 
[INFO] [stderr] error: you are getting the inner pointer of a temporary `CString`
[INFO] [stderr]   --> src/backend.rs:86:30
[INFO] [stderr]    |
[INFO] [stderr] 86 |                              CString::new("yellow").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: that pointer will be invalid outside this expression
[INFO] [stderr] help: assign the `CString` to a variable to extend its lifetime
[INFO] [stderr]   --> src/backend.rs:86:30
[INFO] [stderr]    |
[INFO] [stderr] 86 |                              CString::new("yellow").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
[INFO] [stderr] 
[INFO] [stderr] error: you are getting the inner pointer of a temporary `CString`
[INFO] [stderr]   --> src/backend.rs:91:30
[INFO] [stderr]    |
[INFO] [stderr] 91 |                              CString::new("red").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: that pointer will be invalid outside this expression
[INFO] [stderr] help: assign the `CString` to a variable to extend its lifetime
[INFO] [stderr]   --> src/backend.rs:91:30
[INFO] [stderr]    |
[INFO] [stderr] 91 |                              CString::new("red").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
[INFO] [stderr] 
[INFO] [stderr] warning: Comparing with null is better expressed by the .is_null() method
[INFO] [stderr]    --> src/backend.rs:110:8
[INFO] [stderr]     |
[INFO] [stderr] 110 |     if display == null_mut() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cmp_null)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_null
[INFO] [stderr] 
[INFO] [stderr] warning: Comparing with null is better expressed by the .is_null() method
[INFO] [stderr]    --> src/backend.rs:316:8
[INFO] [stderr]     |
[INFO] [stderr] 316 |     if self.font != null_mut() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_null
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a pointer type (`*mut x11::xlib::XFontStruct`) to a reference type (`&x11::xlib::XFontStruct`)
[INFO] [stderr]    --> src/backend.rs:317:21
[INFO] [stderr]     |
[INFO] [stderr] 317 |       Some(unsafe { ::std::mem::transmute(self.font) })
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*self.font`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::transmute_ptr_to_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ref
[INFO] [stderr] 
[INFO] [stderr] error: you are getting the inner pointer of a temporary `CString`
[INFO] [stderr]   --> src/backend.rs:81:30
[INFO] [stderr]    |
[INFO] [stderr] 81 |                              CString::new("black").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::temporary_cstring_as_ptr)] on by default
[INFO] [stderr]    = note: that pointer will be invalid outside this expression
[INFO] [stderr] help: assign the `CString` to a variable to extend its lifetime
[INFO] [stderr]   --> src/backend.rs:81:30
[INFO] [stderr]    |
[INFO] [stderr] 81 |                              CString::new("black").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
[INFO] [stderr] 
[INFO] [stderr] error: you are getting the inner pointer of a temporary `CString`
[INFO] [stderr]   --> src/backend.rs:86:30
[INFO] [stderr]    |
[INFO] [stderr] 86 |                              CString::new("yellow").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: that pointer will be invalid outside this expression
[INFO] [stderr] help: assign the `CString` to a variable to extend its lifetime
[INFO] [stderr]   --> src/backend.rs:86:30
[INFO] [stderr]    |
[INFO] [stderr] 86 |                              CString::new("yellow").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
[INFO] [stderr] 
[INFO] [stderr] error: you are getting the inner pointer of a temporary `CString`
[INFO] [stderr]   --> src/backend.rs:91:30
[INFO] [stderr]    |
[INFO] [stderr] 91 |                              CString::new("red").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: that pointer will be invalid outside this expression
[INFO] [stderr] help: assign the `CString` to a variable to extend its lifetime
[INFO] [stderr]   --> src/backend.rs:91:30
[INFO] [stderr]    |
[INFO] [stderr] 91 |                              CString::new("red").unwrap().as_ptr(),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
[INFO] [stderr] 
[INFO] [stderr] warning: Comparing with null is better expressed by the .is_null() method
[INFO] [stderr]    --> src/backend.rs:110:8
[INFO] [stderr]     |
[INFO] [stderr] 110 |     if display == null_mut() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cmp_null)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_null
[INFO] [stderr] 
[INFO] [stderr] warning: Comparing with null is better expressed by the .is_null() method
[INFO] [stderr]    --> src/backend.rs:316:8
[INFO] [stderr]     |
[INFO] [stderr] 316 |     if self.font != null_mut() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_null
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a pointer type (`*mut x11::xlib::XFontStruct`) to a reference type (`&x11::xlib::XFontStruct`)
[INFO] [stderr]    --> src/backend.rs:317:21
[INFO] [stderr]     |
[INFO] [stderr] 317 |       Some(unsafe { ::std::mem::transmute(self.font) })
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*self.font`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::transmute_ptr_to_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ref
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rwm`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rwm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b203399c2437fc3cc5cdad85655c7f0c10d916a08566cdb22c66539c16f5b82d"`
[INFO] running `"docker" "rm" "-f" "b203399c2437fc3cc5cdad85655c7f0c10d916a08566cdb22c66539c16f5b82d"`
[INFO] [stdout] b203399c2437fc3cc5cdad85655c7f0c10d916a08566cdb22c66539c16f5b82d