[INFO] cloning repository https://github.com/fschutt/xlib-programming-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fschutt/xlib-programming-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffschutt%2Fxlib-programming-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffschutt%2Fxlib-programming-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a00066f3c7cf137ffb62452c9618c7bb5693c376
[INFO] testing fschutt/xlib-programming-rust against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffschutt%2Fxlib-programming-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fschutt/xlib-programming-rust on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fschutt/xlib-programming-rust
[INFO] finished tweaking git repo https://github.com/fschutt/xlib-programming-rust
[INFO] tweaked toml for git repo https://github.com/fschutt/xlib-programming-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/fschutt/xlib-programming-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dbus v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39b5bb54b3758681cd257d1a21d4a08d89919db06339df1b6fed5741e6cef4c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "39b5bb54b3758681cd257d1a21d4a08d89919db06339df1b6fed5741e6cef4c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39b5bb54b3758681cd257d1a21d4a08d89919db06339df1b6fed5741e6cef4c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b5bb54b3758681cd257d1a21d4a08d89919db06339df1b6fed5741e6cef4c0", kill_on_drop: false }`
[INFO] [stdout] 39b5bb54b3758681cd257d1a21d4a08d89919db06339df1b6fed5741e6cef4c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 891510a0c7d94cc614cacb3261bf917e6ed5f78dfe0feff8047431718b078bb8
[INFO] running `Command { std: "docker" "start" "-a" "891510a0c7d94cc614cacb3261bf917e6ed5f78dfe0feff8047431718b078bb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling dbus v0.5.3
[INFO] [stderr]    Compiling xlibprogramming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `CurrentTime`, `GrabModeAsync`
[INFO] [stdout]  --> src/main.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use x11_dl::xlib::{True, False, GrabModeAsync, CurrentTime, XEvent};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:135:26
[INFO] [stdout]     |
[INFO] [stdout] 135 |         serial: unsafe { ::std::mem::uninitialized() },
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:240:37
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let mut hints: Hints = unsafe { std::mem::uninitialized() };
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:293:78
[INFO] [stdout]     |
[INFO] [stdout] 293 |     let mut window_attributes: x11_dl::xlib::XSetWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stdout]     |                                                                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:318:79
[INFO] [stdout]     |
[INFO] [stdout] 318 |     let mut cur_window_attributes: x11_dl::xlib::XWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.45s
[INFO] running `Command { std: "docker" "inspect" "891510a0c7d94cc614cacb3261bf917e6ed5f78dfe0feff8047431718b078bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "891510a0c7d94cc614cacb3261bf917e6ed5f78dfe0feff8047431718b078bb8", kill_on_drop: false }`
[INFO] [stdout] 891510a0c7d94cc614cacb3261bf917e6ed5f78dfe0feff8047431718b078bb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0af02ca0912fc3ad73d4e9af0000881f165c20f991d7a9c469cb68fb08cefad0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0af02ca0912fc3ad73d4e9af0000881f165c20f991d7a9c469cb68fb08cefad0", kill_on_drop: false }`
[INFO] [stderr]    Compiling xlibprogramming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `CurrentTime`, `GrabModeAsync`
[INFO] [stdout]  --> src/main.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use x11_dl::xlib::{True, False, GrabModeAsync, CurrentTime, XEvent};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> examples/simple_opengl_window.rs:73:78
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut window_attributes: x11_dl::xlib::XSetWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stdout]    |                                                                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> examples/simple_opengl_window.rs:95:79
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut cur_window_attributes: x11_dl::xlib::XWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stdout]    |                                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:135:26
[INFO] [stdout]     |
[INFO] [stdout] 135 |         serial: unsafe { ::std::mem::uninitialized() },
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:240:37
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let mut hints: Hints = unsafe { std::mem::uninitialized() };
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:293:78
[INFO] [stdout]     |
[INFO] [stdout] 293 |     let mut window_attributes: x11_dl::xlib::XSetWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stdout]     |                                                                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/main.rs:318:79
[INFO] [stdout]     |
[INFO] [stdout] 318 |     let mut cur_window_attributes: x11_dl::xlib::XWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/simple_opengl_window.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut display = {
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/simple_opengl_window.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut visual_info = { if vi.is_null() {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "0af02ca0912fc3ad73d4e9af0000881f165c20f991d7a9c469cb68fb08cefad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af02ca0912fc3ad73d4e9af0000881f165c20f991d7a9c469cb68fb08cefad0", kill_on_drop: false }`
[INFO] [stdout] 0af02ca0912fc3ad73d4e9af0000881f165c20f991d7a9c469cb68fb08cefad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2309786419fb383ac151d980db3767e0c7ed276c2b5e9ccf7544974346286c2e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2309786419fb383ac151d980db3767e0c7ed276c2b5e9ccf7544974346286c2e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused imports: `CurrentTime`, `GrabModeAsync`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:7:33
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 7 | use x11_dl::xlib::{True, False, GrabModeAsync, CurrentTime, XEvent};
[INFO] [stdout] 
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/main.rs:135:26
[INFO] [stderr]     |
[INFO] [stderr] 135 |         serial: unsafe { ::std::mem::uninitialized() },
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/main.rs:240:37
[INFO] [stderr]     |
[INFO] [stderr] 240 |     let mut hints: Hints = unsafe { std::mem::uninitialized() };
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/main.rs:293:78
[INFO] [stderr]     |
[INFO] [stderr] 293 |     let mut window_attributes: x11_dl::xlib::XSetWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stderr]     |                                                                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/main.rs:318:79
[INFO] [stderr]     |
[INFO] [stderr] 318 |     let mut cur_window_attributes: x11_dl::xlib::XWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stderr]     |                                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]   --> examples/simple_opengl_window.rs:73:78
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let mut window_attributes: x11_dl::xlib::XSetWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stderr]    |                                                                              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]   --> examples/simple_opengl_window.rs:95:79
[INFO] [stderr]    |
[INFO] [stderr] 95 |     let mut cur_window_attributes: x11_dl::xlib::XWindowAttributes = unsafe { std::mem::uninitialized() };
[INFO] [stderr]    |                                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/simple_opengl_window.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut display = {
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/simple_opengl_window.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut visual_info = { if vi.is_null() {
[INFO] [stderr]    |         ----^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/xlibprogramming-5684d1ad098f4459)
[INFO] running `Command { std: "docker" "inspect" "2309786419fb383ac151d980db3767e0c7ed276c2b5e9ccf7544974346286c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2309786419fb383ac151d980db3767e0c7ed276c2b5e9ccf7544974346286c2e", kill_on_drop: false }`
[INFO] [stdout] 2309786419fb383ac151d980db3767e0c7ed276c2b5e9ccf7544974346286c2e