[INFO] fetching crate yogawm 0.1.0...
[INFO] testing yogawm-0.1.0 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate yogawm 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate yogawm 0.1.0 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yogawm 0.1.0
[INFO] finished tweaking crates.io crate yogawm 0.1.0
[INFO] tweaked toml for crates.io crate yogawm 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate yogawm 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2138a8178bd1d278c237a5475be3a9981c21b1c2cd2e6f94181af1d447bb17f
[INFO] running `Command { std: "docker" "start" "-a" "c2138a8178bd1d278c237a5475be3a9981c21b1c2cd2e6f94181af1d447bb17f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2138a8178bd1d278c237a5475be3a9981c21b1c2cd2e6f94181af1d447bb17f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2138a8178bd1d278c237a5475be3a9981c21b1c2cd2e6f94181af1d447bb17f", kill_on_drop: false }`
[INFO] [stdout] c2138a8178bd1d278c237a5475be3a9981c21b1c2cd2e6f94181af1d447bb17f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8101c1f0482096ce0befe2dfc072b8d2cc171525aeb87e5f19e9006dc9e19db
[INFO] running `Command { std: "docker" "start" "-a" "a8101c1f0482096ce0befe2dfc072b8d2cc171525aeb87e5f19e9006dc9e19db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling x11rb v0.6.0
[INFO] [stderr]    Compiling yogawm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `x11::prelude::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use x11::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `x11::connect`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use x11::connect;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `x11::screens::get_screen`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use x11::screens::get_screen;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `x11::windows::get_all_windows`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use x11::windows::get_all_windows;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `X11Connection`
[INFO] [stdout]   --> src/x11/mod.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub type X11Connection = impl X11RawConnection + X11RequestConnection + X11ConnectionExt + Send + Sync;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `X11Result`
[INFO] [stdout]   --> src/x11/mod.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub type X11Result<T> = Result<T, X11Error>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `connect`
[INFO] [stdout]   --> src/x11/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn connect() -> X11Result<(X11Connection, self::screens::X11ScreenNum)> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `X11ScreenNum`
[INFO] [stdout]   --> src/x11/mod.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub type X11ScreenNum = usize;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_all_screens`
[INFO] [stdout]   --> src/x11/mod.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn get_all_screens(connection: &X11Connection) -> &Vec<X11Screen> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_screen`
[INFO] [stdout]   --> src/x11/mod.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn get_screen(connection: &X11Connection, screen_num: X11ScreenNum) -> &X11Screen {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/x11/mod.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |         pub fn new(
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_wm_class`
[INFO] [stdout]    --> src/x11/mod.rs:117:16
[INFO] [stdout]     |
[INFO] [stdout] 117 |         pub fn get_wm_class(&self) -> Option<String> {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_wm_class_instance`
[INFO] [stdout]    --> src/x11/mod.rs:129:16
[INFO] [stdout]     |
[INFO] [stdout] 129 |         pub fn get_wm_class_instance(&self) -> Option<String> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:140:16
[INFO] [stdout]     |
[INFO] [stdout] 140 |         pub fn get_subwindows(&self, connection: &X11Connection) -> X11Result<Vec<X11Window>> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroy`
[INFO] [stdout]    --> src/x11/mod.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |         pub fn destroy(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroy_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:156:16
[INFO] [stdout]     |
[INFO] [stdout] 156 |         pub fn destroy_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmap`
[INFO] [stdout]    --> src/x11/mod.rs:163:16
[INFO] [stdout]     |
[INFO] [stdout] 163 |         pub fn unmap(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `map`
[INFO] [stdout]    --> src/x11/mod.rs:170:16
[INFO] [stdout]     |
[INFO] [stdout] 170 |         pub fn map(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `map_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:177:16
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn map_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmap_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:184:16
[INFO] [stdout]     |
[INFO] [stdout] 184 |         pub fn unmap_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `query_tree_reply_to_windows`
[INFO] [stdout]    --> src/x11/mod.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn query_tree_reply_to_windows(connection: &X11Connection, reply: QueryTreeReply, show_mapped_windows: bool) -> X11Result<Vec<X11Wind...
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_all_windows`
[INFO] [stdout]    --> src/x11/mod.rs:233:12
[INFO] [stdout]     |
[INFO] [stdout] 233 |     pub fn get_all_windows(connection: &X11Connection, screen: &X11Screen) -> X11Result<Vec<X11Window>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_unmapped_windows`
[INFO] [stdout]    --> src/x11/mod.rs:241:12
[INFO] [stdout]     |
[INFO] [stdout] 241 |     pub fn get_unmapped_windows(connection: &X11Connection, screen: &X11Screen) -> X11Result<Vec<X11Window>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.88s
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a8101c1f0482096ce0befe2dfc072b8d2cc171525aeb87e5f19e9006dc9e19db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8101c1f0482096ce0befe2dfc072b8d2cc171525aeb87e5f19e9006dc9e19db", kill_on_drop: false }`
[INFO] [stdout] a8101c1f0482096ce0befe2dfc072b8d2cc171525aeb87e5f19e9006dc9e19db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b25a95065967a937a27b3f8050df84090579c9c5c11ef51c5f6ef58c0325dadb
[INFO] running `Command { std: "docker" "start" "-a" "b25a95065967a937a27b3f8050df84090579c9c5c11ef51c5f6ef58c0325dadb", kill_on_drop: false }`
[INFO] [stderr]    Compiling yogawm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `x11::prelude::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use x11::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `x11::connect`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use x11::connect;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `x11::screens::get_screen`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use x11::screens::get_screen;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `x11::windows::get_all_windows`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use x11::windows::get_all_windows;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `X11Connection`
[INFO] [stdout]   --> src/x11/mod.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub type X11Connection = impl X11RawConnection + X11RequestConnection + X11ConnectionExt + Send + Sync;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `X11Result`
[INFO] [stdout]   --> src/x11/mod.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub type X11Result<T> = Result<T, X11Error>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `connect`
[INFO] [stdout]   --> src/x11/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn connect() -> X11Result<(X11Connection, self::screens::X11ScreenNum)> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `X11ScreenNum`
[INFO] [stdout]   --> src/x11/mod.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub type X11ScreenNum = usize;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_all_screens`
[INFO] [stdout]   --> src/x11/mod.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn get_all_screens(connection: &X11Connection) -> &Vec<X11Screen> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_screen`
[INFO] [stdout]   --> src/x11/mod.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn get_screen(connection: &X11Connection, screen_num: X11ScreenNum) -> &X11Screen {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/x11/mod.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |         pub fn new(
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_wm_class`
[INFO] [stdout]    --> src/x11/mod.rs:117:16
[INFO] [stdout]     |
[INFO] [stdout] 117 |         pub fn get_wm_class(&self) -> Option<String> {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_wm_class_instance`
[INFO] [stdout]    --> src/x11/mod.rs:129:16
[INFO] [stdout]     |
[INFO] [stdout] 129 |         pub fn get_wm_class_instance(&self) -> Option<String> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:140:16
[INFO] [stdout]     |
[INFO] [stdout] 140 |         pub fn get_subwindows(&self, connection: &X11Connection) -> X11Result<Vec<X11Window>> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroy`
[INFO] [stdout]    --> src/x11/mod.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |         pub fn destroy(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroy_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:156:16
[INFO] [stdout]     |
[INFO] [stdout] 156 |         pub fn destroy_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmap`
[INFO] [stdout]    --> src/x11/mod.rs:163:16
[INFO] [stdout]     |
[INFO] [stdout] 163 |         pub fn unmap(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `map`
[INFO] [stdout]    --> src/x11/mod.rs:170:16
[INFO] [stdout]     |
[INFO] [stdout] 170 |         pub fn map(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `map_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:177:16
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn map_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unmap_subwindows`
[INFO] [stdout]    --> src/x11/mod.rs:184:16
[INFO] [stdout]     |
[INFO] [stdout] 184 |         pub fn unmap_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `query_tree_reply_to_windows`
[INFO] [stdout]    --> src/x11/mod.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn query_tree_reply_to_windows(connection: &X11Connection, reply: QueryTreeReply, show_mapped_windows: bool) -> X11Result<Vec<X11Wind...
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_all_windows`
[INFO] [stdout]    --> src/x11/mod.rs:233:12
[INFO] [stdout]     |
[INFO] [stdout] 233 |     pub fn get_all_windows(connection: &X11Connection, screen: &X11Screen) -> X11Result<Vec<X11Window>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_unmapped_windows`
[INFO] [stdout]    --> src/x11/mod.rs:241:12
[INFO] [stdout]     |
[INFO] [stdout] 241 |     pub fn get_unmapped_windows(connection: &X11Connection, screen: &X11Screen) -> X11Result<Vec<X11Window>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "b25a95065967a937a27b3f8050df84090579c9c5c11ef51c5f6ef58c0325dadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b25a95065967a937a27b3f8050df84090579c9c5c11ef51c5f6ef58c0325dadb", kill_on_drop: false }`
[INFO] [stdout] b25a95065967a937a27b3f8050df84090579c9c5c11ef51c5f6ef58c0325dadb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1802f7fbbcc8ab23417864326fdba1e4abaaa829a2cdc3d11f374c28e799c8a1
[INFO] running `Command { std: "docker" "start" "-a" "1802f7fbbcc8ab23417864326fdba1e4abaaa829a2cdc3d11f374c28e799c8a1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `x11::prelude::*`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use x11::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `x11::connect`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use x11::connect;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `x11::screens::get_screen`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use x11::screens::get_screen;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `x11::windows::get_all_windows`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x11::windows::get_all_windows;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `X11Connection`
[INFO] [stderr]   --> src/x11/mod.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub type X11Connection = impl X11RawConnection + X11RequestConnection + X11ConnectionExt + Send + Sync;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `X11Result`
[INFO] [stderr]   --> src/x11/mod.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub type X11Result<T> = Result<T, X11Error>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `connect`
[INFO] [stderr]   --> src/x11/mod.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn connect() -> X11Result<(X11Connection, self::screens::X11ScreenNum)> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `X11ScreenNum`
[INFO] [stderr]   --> src/x11/mod.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub type X11ScreenNum = usize;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_all_screens`
[INFO] [stderr]   --> src/x11/mod.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn get_all_screens(connection: &X11Connection) -> &Vec<X11Screen> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_screen`
[INFO] [stderr]   --> src/x11/mod.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn get_screen(connection: &X11Connection, screen_num: X11ScreenNum) -> &X11Screen {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/x11/mod.rs:101:16
[INFO] [stderr]     |
[INFO] [stderr] 101 |         pub fn new(
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_wm_class`
[INFO] [stderr]    --> src/x11/mod.rs:117:16
[INFO] [stderr]     |
[INFO] [stderr] 117 |         pub fn get_wm_class(&self) -> Option<String> {
[INFO] [stderr]     |                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_wm_class_instance`
[INFO] [stderr]    --> src/x11/mod.rs:129:16
[INFO] [stderr]     |
[INFO] [stderr] 129 |         pub fn get_wm_class_instance(&self) -> Option<String> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_subwindows`
[INFO] [stderr]    --> src/x11/mod.rs:140:16
[INFO] [stderr]     |
[INFO] [stderr] 140 |         pub fn get_subwindows(&self, connection: &X11Connection) -> X11Result<Vec<X11Window>> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `destroy`
[INFO] [stderr]    --> src/x11/mod.rs:148:16
[INFO] [stderr]     |
[INFO] [stderr] 148 |         pub fn destroy(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `destroy_subwindows`
[INFO] [stderr]    --> src/x11/mod.rs:156:16
[INFO] [stderr]     |
[INFO] [stderr] 156 |         pub fn destroy_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unmap`
[INFO] [stderr]    --> src/x11/mod.rs:163:16
[INFO] [stderr]     |
[INFO] [stderr] 163 |         pub fn unmap(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stderr]     |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `map`
[INFO] [stderr]    --> src/x11/mod.rs:170:16
[INFO] [stderr]     |
[INFO] [stderr] 170 |         pub fn map(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `map_subwindows`
[INFO] [stderr]    --> src/x11/mod.rs:177:16
[INFO] [stderr]     |
[INFO] [stderr] 177 |         pub fn map_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unmap_subwindows`
[INFO] [stderr]    --> src/x11/mod.rs:184:16
[INFO] [stderr]     |
[INFO] [stderr] 184 |         pub fn unmap_subwindows(&self, connection: &X11Connection) -> X11Result<()> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `query_tree_reply_to_windows`
[INFO] [stderr]    --> src/x11/mod.rs:193:8
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn query_tree_reply_to_windows(connection: &X11Connection, reply: QueryTreeReply, show_mapped_windows: bool) -> X11Result<Vec<X11Wind...
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_all_windows`
[INFO] [stderr]    --> src/x11/mod.rs:233:12
[INFO] [stderr]     |
[INFO] [stderr] 233 |     pub fn get_all_windows(connection: &X11Connection, screen: &X11Screen) -> X11Result<Vec<X11Window>> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_unmapped_windows`
[INFO] [stderr]    --> src/x11/mod.rs:241:12
[INFO] [stderr]     |
[INFO] [stderr] 241 |     pub fn get_unmapped_windows(connection: &X11Connection, screen: &X11Screen) -> X11Result<Vec<X11Window>> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `yogawm` (bin "yogawm" test) generated 23 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/yogawm-a0f5f146e4a6e7bd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1802f7fbbcc8ab23417864326fdba1e4abaaa829a2cdc3d11f374c28e799c8a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1802f7fbbcc8ab23417864326fdba1e4abaaa829a2cdc3d11f374c28e799c8a1", kill_on_drop: false }`
[INFO] [stdout] 1802f7fbbcc8ab23417864326fdba1e4abaaa829a2cdc3d11f374c28e799c8a1