Dec 11 15:24:08.314 INFO checking kkspeed/metal-placebo against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 15:24:08.314 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 15:24:08.980 INFO [stdout] 6760d66df96841b057b11d826bff0b94b36d753d6c10946fa18b309bd71f3486
Dec 11 15:24:08.982 INFO running `"docker" "start" "-a" "6760d66df96841b057b11d826bff0b94b36d753d6c10946fa18b309bd71f3486"`
Dec 11 15:24:09.671 INFO [stderr] usermod: no changes
Dec 11 15:24:09.734 INFO [stderr]     Checking serde v0.8.22
Dec 11 15:24:09.738 INFO [stderr]     Checking humantime v1.0.0
Dec 11 15:24:09.738 INFO [stderr]     Checking mustache v0.8.0
Dec 11 15:24:09.739 INFO [stderr]     Checking ordered-float v0.2.3
Dec 11 15:24:09.739 INFO [stderr]    Compiling x11 v2.12.0
Dec 11 15:24:09.743 INFO [stderr]     Checking time v0.1.35
Dec 11 15:24:11.089 INFO [stderr]     Checking chrono v0.2.25
Dec 11 15:24:16.779 INFO [stderr]     Checking serde_test v0.8.22
Dec 11 15:24:16.781 INFO [stderr]     Checking serde-value v0.3.1
Dec 11 15:24:18.103 INFO [stderr]     Checking linked-hash-map v0.3.0
Dec 11 15:24:18.641 INFO [stderr]     Checking yaml-rust v0.3.5
Dec 11 15:24:19.700 INFO [stderr]     Checking serde_yaml v0.5.0
Dec 11 15:24:20.364 INFO [stderr]     Checking log4rs v0.5.2
Dec 11 15:24:22.012 INFO [stderr]     Checking rswm v0.0.0 (/source)
Dec 11 15:24:22.608 INFO [stderr] warning: unused import: `std::borrow::Cow`
Dec 11 15:24:22.608 INFO [stderr]  --> src/client.rs:1:5
Dec 11 15:24:22.608 INFO [stderr]   |
Dec 11 15:24:22.608 INFO [stderr] 1 | use std::borrow::Cow;
Dec 11 15:24:22.608 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 11 15:24:22.608 INFO [stderr]   |
Dec 11 15:24:22.608 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 15:24:22.608 INFO [stderr] 
Dec 11 15:24:22.608 INFO [stderr] warning: unused imports: `FullScreen`, `Overview`
Dec 11 15:24:22.608 INFO [stderr]   --> src/core.rs:15:14
Dec 11 15:24:22.608 INFO [stderr]    |
Dec 11 15:24:22.608 INFO [stderr] 15 | use layout::{FullScreen, Layout, Overview, Tile};
Dec 11 15:24:22.608 INFO [stderr]    |              ^^^^^^^^^^          ^^^^^^^^
Dec 11 15:24:22.608 INFO [stderr] 
Dec 11 15:24:22.611 INFO [stderr] warning: unused import: `ClientL`
Dec 11 15:24:22.611 INFO [stderr]  --> src/config.rs:7:14
Dec 11 15:24:22.611 INFO [stderr]   |
Dec 11 15:24:22.611 INFO [stderr] 7 | use client::{ClientL, ClientW};
Dec 11 15:24:22.611 INFO [stderr]   |              ^^^^^^^
Dec 11 15:24:22.611 INFO [stderr] 
Dec 11 15:24:22.611 INFO [stderr] warning: unused import: `mustache::MapBuilder`
Dec 11 15:24:22.612 INFO [stderr]  --> src/loggers.rs:6:5
Dec 11 15:24:22.612 INFO [stderr]   |
Dec 11 15:24:22.612 INFO [stderr] 6 | use mustache::MapBuilder;
Dec 11 15:24:22.612 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:22.612 INFO [stderr] 
Dec 11 15:24:22.612 INFO [stderr] warning: unused import: `std::io::Write`
Dec 11 15:24:22.612 INFO [stderr]  --> src/layout.rs:1:5
Dec 11 15:24:22.612 INFO [stderr]   |
Dec 11 15:24:22.612 INFO [stderr] 1 | use std::io::Write;
Dec 11 15:24:22.612 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 11 15:24:22.612 INFO [stderr] 
Dec 11 15:24:22.612 INFO [stderr] warning: unused import: `std::io::Write`
Dec 11 15:24:22.612 INFO [stderr]  --> src/workspace.rs:2:5
Dec 11 15:24:22.612 INFO [stderr]   |
Dec 11 15:24:22.612 INFO [stderr] 2 | use std::io::Write;
Dec 11 15:24:22.612 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 11 15:24:22.612 INFO [stderr] 
Dec 11 15:24:22.612 INFO [stderr] warning: unused import: `c_int`
Dec 11 15:24:22.612 INFO [stderr]  --> src/workspace.rs:4:20
Dec 11 15:24:22.612 INFO [stderr]   |
Dec 11 15:24:22.612 INFO [stderr] 4 | use std::os::raw::{c_int, c_uchar, c_uint};
Dec 11 15:24:22.612 INFO [stderr]   |                    ^^^^^
Dec 11 15:24:22.612 INFO [stderr] 
Dec 11 15:24:22.880 INFO [stderr] warning: unused import: `std::borrow::Cow`
Dec 11 15:24:22.880 INFO [stderr]  --> src/client.rs:1:5
Dec 11 15:24:22.880 INFO [stderr]   |
Dec 11 15:24:22.880 INFO [stderr] 1 | use std::borrow::Cow;
Dec 11 15:24:22.880 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 11 15:24:22.880 INFO [stderr]   |
Dec 11 15:24:22.880 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 15:24:22.880 INFO [stderr] 
Dec 11 15:24:22.880 INFO [stderr] warning: unused imports: `FullScreen`, `Overview`
Dec 11 15:24:22.880 INFO [stderr]   --> src/core.rs:15:14
Dec 11 15:24:22.880 INFO [stderr]    |
Dec 11 15:24:22.880 INFO [stderr] 15 | use layout::{FullScreen, Layout, Overview, Tile};
Dec 11 15:24:22.880 INFO [stderr]    |              ^^^^^^^^^^          ^^^^^^^^
Dec 11 15:24:22.880 INFO [stderr] 
Dec 11 15:24:22.880 INFO [stderr] warning: unused import: `ClientL`
Dec 11 15:24:22.881 INFO [stderr]  --> src/config.rs:7:14
Dec 11 15:24:22.881 INFO [stderr]   |
Dec 11 15:24:22.881 INFO [stderr] 7 | use client::{ClientL, ClientW};
Dec 11 15:24:22.881 INFO [stderr]   |              ^^^^^^^
Dec 11 15:24:22.881 INFO [stderr] 
Dec 11 15:24:22.881 INFO [stderr] warning: unused import: `mustache::MapBuilder`
Dec 11 15:24:22.881 INFO [stderr]  --> src/loggers.rs:6:5
Dec 11 15:24:22.881 INFO [stderr]   |
Dec 11 15:24:22.881 INFO [stderr] 6 | use mustache::MapBuilder;
Dec 11 15:24:22.881 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:22.881 INFO [stderr] 
Dec 11 15:24:22.881 INFO [stderr] warning: unused import: `std::io::Write`
Dec 11 15:24:22.881 INFO [stderr]  --> src/layout.rs:1:5
Dec 11 15:24:22.881 INFO [stderr]   |
Dec 11 15:24:22.881 INFO [stderr] 1 | use std::io::Write;
Dec 11 15:24:22.881 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 11 15:24:22.881 INFO [stderr] 
Dec 11 15:24:22.881 INFO [stderr] warning: unused import: `std::io::Write`
Dec 11 15:24:22.881 INFO [stderr]  --> src/workspace.rs:2:5
Dec 11 15:24:22.881 INFO [stderr]   |
Dec 11 15:24:22.881 INFO [stderr] 2 | use std::io::Write;
Dec 11 15:24:22.881 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 11 15:24:22.881 INFO [stderr] 
Dec 11 15:24:22.881 INFO [stderr] warning: unused import: `c_int`
Dec 11 15:24:22.881 INFO [stderr]  --> src/workspace.rs:4:20
Dec 11 15:24:22.881 INFO [stderr]   |
Dec 11 15:24:22.881 INFO [stderr] 4 | use std::os::raw::{c_int, c_uchar, c_uint};
Dec 11 15:24:22.881 INFO [stderr]   |                    ^^^^^
Dec 11 15:24:22.881 INFO [stderr] 
Dec 11 15:24:23.212 INFO [stderr] warning: unused variable: `message`
Dec 11 15:24:23.212 INFO [stderr]   --> src/layout.rs:12:20
Dec 11 15:24:23.212 INFO [stderr]    |
Dec 11 15:24:23.212 INFO [stderr] 12 |     fn post(&self, message: &str, window_manager: &mut core::WindowManager) {}
Dec 11 15:24:23.212 INFO [stderr]    |                    ^^^^^^^ help: consider using `_message` instead
Dec 11 15:24:23.212 INFO [stderr]    |
Dec 11 15:24:23.212 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 15:24:23.212 INFO [stderr] 
Dec 11 15:24:23.212 INFO [stderr] warning: unused variable: `window_manager`
Dec 11 15:24:23.212 INFO [stderr]   --> src/layout.rs:12:35
Dec 11 15:24:23.212 INFO [stderr]    |
Dec 11 15:24:23.212 INFO [stderr] 12 |     fn post(&self, message: &str, window_manager: &mut core::WindowManager) {}
Dec 11 15:24:23.212 INFO [stderr]    |                                   ^^^^^^^^^^^^^^ help: consider using `_window_manager` instead
Dec 11 15:24:23.212 INFO [stderr] 
Dec 11 15:24:23.212 INFO [stderr] warning: unused variable: `event`
Dec 11 15:24:23.212 INFO [stderr]     --> src/core.rs:1068:36
Dec 11 15:24:23.213 INFO [stderr]      |
Dec 11 15:24:23.213 INFO [stderr] 1068 |     fn on_expose_notify(&mut self, event: xlib::XExposeEvent) {
Dec 11 15:24:23.213 INFO [stderr]      |                                    ^^^^^ help: consider using `_event` instead
Dec 11 15:24:23.213 INFO [stderr] 
Dec 11 15:24:23.213 INFO [stderr] warning: unused variable: `event`
Dec 11 15:24:23.213 INFO [stderr]     --> src/core.rs:1138:36
Dec 11 15:24:23.213 INFO [stderr]      |
Dec 11 15:24:23.213 INFO [stderr] 1138 |     fn on_motion_notify(&mut self, event: xlib::XMotionEvent) {
Dec 11 15:24:23.213 INFO [stderr]      |                                    ^^^^^ help: consider using `_event` instead
Dec 11 15:24:23.213 INFO [stderr] 
Dec 11 15:24:23.213 INFO [stderr] warning: unused variable: `tag`
Dec 11 15:24:23.213 INFO [stderr]     --> src/core.rs:1149:25
Dec 11 15:24:23.213 INFO [stderr]      |
Dec 11 15:24:23.213 INFO [stderr] 1149 |                     let tag = c.tag();
Dec 11 15:24:23.213 INFO [stderr]      |                         ^^^ help: consider using `_tag` instead
Dec 11 15:24:23.213 INFO [stderr] 
Dec 11 15:24:23.213 INFO [stderr] warning: unused variable: `w`
Dec 11 15:24:23.213 INFO [stderr]   --> src/config.rs:50:53
Dec 11 15:24:23.213 INFO [stderr]    |
Dec 11 15:24:23.213 INFO [stderr] 50 |             vec![(mod_mask, keysym::XK_q, Box::new(|w| process::exit(0))),
Dec 11 15:24:23.213 INFO [stderr]    |                                                     ^ help: consider using `_w` instead
Dec 11 15:24:23.213 INFO [stderr] 
Dec 11 15:24:23.213 INFO [stderr] warning: unused variable: `global_config`
Dec 11 15:24:23.213 INFO [stderr]    --> src/loggers.rs:128:13
Dec 11 15:24:23.213 INFO [stderr]     |
Dec 11 15:24:23.213 INFO [stderr] 128 |             global_config: &Config,
Dec 11 15:24:23.213 INFO [stderr]     |             ^^^^^^^^^^^^^ help: consider using `_global_config` instead
Dec 11 15:24:23.213 INFO [stderr] 
Dec 11 15:24:23.213 INFO [stderr] warning: unused variable: `config`
Dec 11 15:24:23.213 INFO [stderr]   --> src/layout.rs:91:28
Dec 11 15:24:23.213 INFO [stderr]    |
Dec 11 15:24:23.213 INFO [stderr] 91 |     fn layout_rects(&self, config: Rc<Config>, n: usize, rect: Rect) -> Vec<Rect> {
Dec 11 15:24:23.213 INFO [stderr]    |                            ^^^^^^ help: consider using `_config` instead
Dec 11 15:24:23.213 INFO [stderr] 
Dec 11 15:24:23.348 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:24:23.348 INFO [stderr]     --> src/core.rs:1143:21
Dec 11 15:24:23.348 INFO [stderr]      |
Dec 11 15:24:23.348 INFO [stderr] 1143 |         if let Some(mut c) = self.get_client_by_window(event.window).as_mut() {
Dec 11 15:24:23.348 INFO [stderr]      |                     ----^
Dec 11 15:24:23.348 INFO [stderr]      |                     |
Dec 11 15:24:23.348 INFO [stderr]      |                     help: remove this `mut`
Dec 11 15:24:23.348 INFO [stderr]      |
Dec 11 15:24:23.352 INFO [stderr]      = note: #[warn(unused_mut)] on by default
Dec 11 15:24:23.352 INFO [stderr] 
Dec 11 15:24:23.434 INFO [stderr] warning: field is never used: `anchor_window`
Dec 11 15:24:23.436 INFO [stderr]   --> src/client.rs:63:5
Dec 11 15:24:23.436 INFO [stderr]    |
Dec 11 15:24:23.436 INFO [stderr] 63 |     anchor_window: xlib::Window,
Dec 11 15:24:23.436 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr]    |
Dec 11 15:24:23.436 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.436 INFO [stderr] warning: field is never used: `is_dialog`
Dec 11 15:24:23.436 INFO [stderr]   --> src/client.rs:72:5
Dec 11 15:24:23.436 INFO [stderr]    |
Dec 11 15:24:23.436 INFO [stderr] 72 |     is_dialog: bool,
Dec 11 15:24:23.436 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.436 INFO [stderr] warning: field is never used: `old_border`
Dec 11 15:24:23.436 INFO [stderr]   --> src/client.rs:88:5
Dec 11 15:24:23.436 INFO [stderr]    |
Dec 11 15:24:23.436 INFO [stderr] 88 |     old_border: c_int,
Dec 11 15:24:23.436 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.436 INFO [stderr] warning: constant item is never used: `TRACE`
Dec 11 15:24:23.436 INFO [stderr]   --> src/core.rs:21:1
Dec 11 15:24:23.436 INFO [stderr]    |
Dec 11 15:24:23.436 INFO [stderr] 21 | const TRACE: bool = true;
Dec 11 15:24:23.436 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.436 INFO [stderr] warning: method is never used: `peek`
Dec 11 15:24:23.436 INFO [stderr]   --> src/core.rs:74:5
Dec 11 15:24:23.436 INFO [stderr]    |
Dec 11 15:24:23.436 INFO [stderr] 74 |     fn peek(&self) -> Option<&ClientW> {
Dec 11 15:24:23.436 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.436 INFO [stderr] warning: field is never used: `screen`
Dec 11 15:24:23.436 INFO [stderr]    --> src/core.rs:113:5
Dec 11 15:24:23.436 INFO [stderr]     |
Dec 11 15:24:23.436 INFO [stderr] 113 |     screen: c_int,
Dec 11 15:24:23.436 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.436 INFO [stderr] warning: field is never used: `current_returned`
Dec 11 15:24:23.436 INFO [stderr]    --> src/workspace.rs:367:5
Dec 11 15:24:23.436 INFO [stderr]     |
Dec 11 15:24:23.436 INFO [stderr] 367 |     current_returned: bool,
Dec 11 15:24:23.436 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.436 INFO [stderr] 
Dec 11 15:24:23.437 INFO [stderr] warning: function is never used: `net_wm_state_sticky`
Dec 11 15:24:23.437 INFO [stderr]   --> src/atoms.rs:55:1
Dec 11 15:24:23.437 INFO [stderr]    |
Dec 11 15:24:23.437 INFO [stderr] 55 | pub fn net_wm_state_sticky() -> xlib::Atom {
Dec 11 15:24:23.437 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.437 INFO [stderr] 
Dec 11 15:24:23.456 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 15:24:23.456 INFO [stderr]    --> src/loggers.rs:173:9
Dec 11 15:24:23.456 INFO [stderr]     |
Dec 11 15:24:23.456 INFO [stderr] 173 | /         write!(self.child.stdin.as_mut().unwrap(),
Dec 11 15:24:23.456 INFO [stderr] 174 | |                "{}",
Dec 11 15:24:23.456 INFO [stderr] 175 | |                self.config.separator);
Dec 11 15:24:23.456 INFO [stderr]     | |______________________________________^
Dec 11 15:24:23.456 INFO [stderr]     |
Dec 11 15:24:23.456 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 15:24:23.456 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 15:24:23.456 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)
Dec 11 15:24:23.456 INFO [stderr] 
Dec 11 15:24:23.456 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 15:24:23.456 INFO [stderr]    --> src/loggers.rs:196:9
Dec 11 15:24:23.456 INFO [stderr]     |
Dec 11 15:24:23.456 INFO [stderr] 196 |         write!(self.child.stdin.as_mut().unwrap(), "\n");
Dec 11 15:24:23.456 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:23.456 INFO [stderr]     |
Dec 11 15:24:23.456 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 15:24:23.456 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)
Dec 11 15:24:23.456 INFO [stderr] 
Dec 11 15:24:23.692 INFO [stderr] warning: unused variable: `message`
Dec 11 15:24:23.692 INFO [stderr]   --> src/layout.rs:12:20
Dec 11 15:24:23.692 INFO [stderr]    |
Dec 11 15:24:23.692 INFO [stderr] 12 |     fn post(&self, message: &str, window_manager: &mut core::WindowManager) {}
Dec 11 15:24:23.692 INFO [stderr]    |                    ^^^^^^^ help: consider using `_message` instead
Dec 11 15:24:23.692 INFO [stderr]    |
Dec 11 15:24:23.692 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 15:24:23.692 INFO [stderr] 
Dec 11 15:24:23.692 INFO [stderr] warning: unused variable: `window_manager`
Dec 11 15:24:23.692 INFO [stderr]   --> src/layout.rs:12:35
Dec 11 15:24:23.693 INFO [stderr]    |
Dec 11 15:24:23.693 INFO [stderr] 12 |     fn post(&self, message: &str, window_manager: &mut core::WindowManager) {}
Dec 11 15:24:23.693 INFO [stderr]    |                                   ^^^^^^^^^^^^^^ help: consider using `_window_manager` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:23.693 INFO [stderr] warning: unused variable: `event`
Dec 11 15:24:23.693 INFO [stderr]     --> src/core.rs:1068:36
Dec 11 15:24:23.693 INFO [stderr]      |
Dec 11 15:24:23.693 INFO [stderr] 1068 |     fn on_expose_notify(&mut self, event: xlib::XExposeEvent) {
Dec 11 15:24:23.693 INFO [stderr]      |                                    ^^^^^ help: consider using `_event` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:23.693 INFO [stderr] warning: unused variable: `event`
Dec 11 15:24:23.693 INFO [stderr]     --> src/core.rs:1138:36
Dec 11 15:24:23.693 INFO [stderr]      |
Dec 11 15:24:23.693 INFO [stderr] 1138 |     fn on_motion_notify(&mut self, event: xlib::XMotionEvent) {
Dec 11 15:24:23.693 INFO [stderr]      |                                    ^^^^^ help: consider using `_event` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:23.693 INFO [stderr] warning: unused variable: `tag`
Dec 11 15:24:23.693 INFO [stderr]     --> src/core.rs:1149:25
Dec 11 15:24:23.693 INFO [stderr]      |
Dec 11 15:24:23.693 INFO [stderr] 1149 |                     let tag = c.tag();
Dec 11 15:24:23.693 INFO [stderr]      |                         ^^^ help: consider using `_tag` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:23.693 INFO [stderr] warning: unused variable: `w`
Dec 11 15:24:23.693 INFO [stderr]   --> src/config.rs:50:53
Dec 11 15:24:23.693 INFO [stderr]    |
Dec 11 15:24:23.693 INFO [stderr] 50 |             vec![(mod_mask, keysym::XK_q, Box::new(|w| process::exit(0))),
Dec 11 15:24:23.693 INFO [stderr]    |                                                     ^ help: consider using `_w` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:23.693 INFO [stderr] warning: unused variable: `global_config`
Dec 11 15:24:23.693 INFO [stderr]    --> src/loggers.rs:128:13
Dec 11 15:24:23.693 INFO [stderr]     |
Dec 11 15:24:23.693 INFO [stderr] 128 |             global_config: &Config,
Dec 11 15:24:23.693 INFO [stderr]     |             ^^^^^^^^^^^^^ help: consider using `_global_config` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:23.693 INFO [stderr] warning: unused variable: `config`
Dec 11 15:24:23.693 INFO [stderr]   --> src/layout.rs:91:28
Dec 11 15:24:23.693 INFO [stderr]    |
Dec 11 15:24:23.693 INFO [stderr] 91 |     fn layout_rects(&self, config: Rc<Config>, n: usize, rect: Rect) -> Vec<Rect> {
Dec 11 15:24:23.693 INFO [stderr]    |                            ^^^^^^ help: consider using `_config` instead
Dec 11 15:24:23.693 INFO [stderr] 
Dec 11 15:24:24.006 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:24:24.006 INFO [stderr]     --> src/core.rs:1143:21
Dec 11 15:24:24.006 INFO [stderr]      |
Dec 11 15:24:24.006 INFO [stderr] 1143 |         if let Some(mut c) = self.get_client_by_window(event.window).as_mut() {
Dec 11 15:24:24.006 INFO [stderr]      |                     ----^
Dec 11 15:24:24.006 INFO [stderr]      |                     |
Dec 11 15:24:24.006 INFO [stderr]      |                     help: remove this `mut`
Dec 11 15:24:24.007 INFO [stderr]      |
Dec 11 15:24:24.012 INFO [stderr]      = note: #[warn(unused_mut)] on by default
Dec 11 15:24:24.012 INFO [stderr] 
Dec 11 15:24:24.208 INFO [stderr] warning: field is never used: `anchor_window`
Dec 11 15:24:24.208 INFO [stderr]   --> src/client.rs:63:5
Dec 11 15:24:24.208 INFO [stderr]    |
Dec 11 15:24:24.208 INFO [stderr] 63 |     anchor_window: xlib::Window,
Dec 11 15:24:24.208 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.208 INFO [stderr]    |
Dec 11 15:24:24.208 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 15:24:24.208 INFO [stderr] 
Dec 11 15:24:24.208 INFO [stderr] warning: field is never used: `is_dialog`
Dec 11 15:24:24.208 INFO [stderr]   --> src/client.rs:72:5
Dec 11 15:24:24.208 INFO [stderr]    |
Dec 11 15:24:24.208 INFO [stderr] 72 |     is_dialog: bool,
Dec 11 15:24:24.208 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 15:24:24.208 INFO [stderr] 
Dec 11 15:24:24.208 INFO [stderr] warning: field is never used: `old_border`
Dec 11 15:24:24.208 INFO [stderr]   --> src/client.rs:88:5
Dec 11 15:24:24.208 INFO [stderr]    |
Dec 11 15:24:24.208 INFO [stderr] 88 |     old_border: c_int,
Dec 11 15:24:24.208 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.208 INFO [stderr] 
Dec 11 15:24:24.216 INFO [stderr] warning: constant item is never used: `TRACE`
Dec 11 15:24:24.216 INFO [stderr]   --> src/core.rs:21:1
Dec 11 15:24:24.216 INFO [stderr]    |
Dec 11 15:24:24.216 INFO [stderr] 21 | const TRACE: bool = true;
Dec 11 15:24:24.216 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.216 INFO [stderr] 
Dec 11 15:24:24.216 INFO [stderr] warning: method is never used: `peek`
Dec 11 15:24:24.216 INFO [stderr]   --> src/core.rs:74:5
Dec 11 15:24:24.216 INFO [stderr]    |
Dec 11 15:24:24.216 INFO [stderr] 74 |     fn peek(&self) -> Option<&ClientW> {
Dec 11 15:24:24.216 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.216 INFO [stderr] 
Dec 11 15:24:24.216 INFO [stderr] warning: field is never used: `screen`
Dec 11 15:24:24.216 INFO [stderr]    --> src/core.rs:113:5
Dec 11 15:24:24.216 INFO [stderr]     |
Dec 11 15:24:24.216 INFO [stderr] 113 |     screen: c_int,
Dec 11 15:24:24.216 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 11 15:24:24.216 INFO [stderr] 
Dec 11 15:24:24.217 INFO [stderr] warning: field is never used: `current_returned`
Dec 11 15:24:24.217 INFO [stderr]    --> src/workspace.rs:367:5
Dec 11 15:24:24.217 INFO [stderr]     |
Dec 11 15:24:24.217 INFO [stderr] 367 |     current_returned: bool,
Dec 11 15:24:24.217 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.217 INFO [stderr] 
Dec 11 15:24:24.217 INFO [stderr] warning: function is never used: `net_wm_state_sticky`
Dec 11 15:24:24.217 INFO [stderr]   --> src/atoms.rs:55:1
Dec 11 15:24:24.217 INFO [stderr]    |
Dec 11 15:24:24.217 INFO [stderr] 55 | pub fn net_wm_state_sticky() -> xlib::Atom {
Dec 11 15:24:24.217 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.217 INFO [stderr] 
Dec 11 15:24:24.276 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 15:24:24.276 INFO [stderr]    --> src/loggers.rs:173:9
Dec 11 15:24:24.276 INFO [stderr]     |
Dec 11 15:24:24.276 INFO [stderr] 173 | /         write!(self.child.stdin.as_mut().unwrap(),
Dec 11 15:24:24.276 INFO [stderr] 174 | |                "{}",
Dec 11 15:24:24.276 INFO [stderr] 175 | |                self.config.separator);
Dec 11 15:24:24.276 INFO [stderr]     | |______________________________________^
Dec 11 15:24:24.276 INFO [stderr]     |
Dec 11 15:24:24.276 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 15:24:24.276 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 15:24:24.276 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)
Dec 11 15:24:24.276 INFO [stderr] 
Dec 11 15:24:24.276 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 15:24:24.276 INFO [stderr]    --> src/loggers.rs:196:9
Dec 11 15:24:24.276 INFO [stderr]     |
Dec 11 15:24:24.276 INFO [stderr] 196 |         write!(self.child.stdin.as_mut().unwrap(), "\n");
Dec 11 15:24:24.276 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:24.276 INFO [stderr]     |
Dec 11 15:24:24.276 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 15:24:24.276 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)
Dec 11 15:24:24.276 INFO [stderr] 
Dec 11 15:24:25.634 INFO [stderr] warning: unused import: `rswm::client::ClientW`
Dec 11 15:24:25.634 INFO [stderr]   --> main.rs:11:5
Dec 11 15:24:25.634 INFO [stderr]    |
Dec 11 15:24:25.634 INFO [stderr] 11 | use rswm::client::ClientW;
Dec 11 15:24:25.634 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:25.634 INFO [stderr]    |
Dec 11 15:24:25.634 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 15:24:25.634 INFO [stderr] 
Dec 11 15:24:25.634 INFO [stderr] warning: unused imports: `Layout`, `Tile`
Dec 11 15:24:25.634 INFO [stderr]   --> main.rs:17:20
Dec 11 15:24:25.634 INFO [stderr]    |
Dec 11 15:24:25.634 INFO [stderr] 17 | use rswm::layout::{Tile, Tile13, FullScreen, Overview, Layout};
Dec 11 15:24:25.634 INFO [stderr]    |                    ^^^^                                ^^^^^^
Dec 11 15:24:25.634 INFO [stderr] 
Dec 11 15:24:25.747 INFO [stderr] warning: unused import: `rswm::client::ClientW`
Dec 11 15:24:25.747 INFO [stderr]   --> main.rs:11:5
Dec 11 15:24:25.747 INFO [stderr]    |
Dec 11 15:24:25.747 INFO [stderr] 11 | use rswm::client::ClientW;
Dec 11 15:24:25.747 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:25.747 INFO [stderr]    |
Dec 11 15:24:25.747 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 15:24:25.747 INFO [stderr] 
Dec 11 15:24:25.747 INFO [stderr] warning: unused imports: `Layout`, `Tile`
Dec 11 15:24:25.747 INFO [stderr]   --> main.rs:17:20
Dec 11 15:24:25.747 INFO [stderr]    |
Dec 11 15:24:25.747 INFO [stderr] 17 | use rswm::layout::{Tile, Tile13, FullScreen, Overview, Layout};
Dec 11 15:24:25.747 INFO [stderr]    |                    ^^^^                                ^^^^^^
Dec 11 15:24:25.747 INFO [stderr] 
Dec 11 15:24:25.896 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.21s
Dec 11 15:24:25.900 INFO [stderr] su: No module specific data is present
Dec 11 15:24:26.307 INFO running `"docker" "inspect" "6760d66df96841b057b11d826bff0b94b36d753d6c10946fa18b309bd71f3486"`
Dec 11 15:24:26.523 INFO running `"docker" "rm" "-f" "6760d66df96841b057b11d826bff0b94b36d753d6c10946fa18b309bd71f3486"`
Dec 11 15:24:26.696 INFO [stdout] 6760d66df96841b057b11d826bff0b94b36d753d6c10946fa18b309bd71f3486