[INFO] cloning repository https://github.com/moka491/stream-view
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/moka491/stream-view" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoka491%2Fstream-view", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoka491%2Fstream-view'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d10953f0051851bc7d6239171217fbc2f716dd6
[INFO] testing moka491/stream-view against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoka491%2Fstream-view" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/moka491/stream-view on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/moka491/stream-view
[INFO] finished tweaking git repo https://github.com/moka491/stream-view
[INFO] tweaked toml for git repo https://github.com/moka491/stream-view written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/moka491/stream-view already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", 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] 9a9e52092ac5263c22547dba51aee5025224473d21b5020411d43e9cbadfb07a
[INFO] running `Command { std: "docker" "start" "-a" "9a9e52092ac5263c22547dba51aee5025224473d21b5020411d43e9cbadfb07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a9e52092ac5263c22547dba51aee5025224473d21b5020411d43e9cbadfb07a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a9e52092ac5263c22547dba51aee5025224473d21b5020411d43e9cbadfb07a", kill_on_drop: false }`
[INFO] [stdout] 9a9e52092ac5263c22547dba51aee5025224473d21b5020411d43e9cbadfb07a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] dcd0e9b673d6818b2cf4dd82fb5c0f1c3a05d951573beaab9a2fed4237c1adb7
[INFO] running `Command { std: "docker" "start" "-a" "dcd0e9b673d6818b2cf4dd82fb5c0f1c3a05d951573beaab9a2fed4237c1adb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling minimal-lexical v0.1.4
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[INFO] [stderr]    Compiling futures-core v0.3.17
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[INFO] [stderr]    Compiling nokhwa-bindings-windows v0.3.2
[INFO] [stderr]    Compiling cgmath v0.18.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling aliasable v0.1.3
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[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling rgb v0.8.29
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling glium v0.30.2
[INFO] [stderr]    Compiling dlib v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling rayon-core v1.9.1
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[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling x11-dl v2.19.1
[INFO] [stderr]    Compiling nom v7.0.0
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling ouroboros_macro v0.13.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling nanorand v0.6.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling xdg v2.4.0
[INFO] [stderr]    Compiling mio-misc v1.2.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling xcursor v0.3.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling flume v0.10.9
[INFO] [stderr]    Compiling nasm-rs v0.2.1
[INFO] [stderr]    Compiling andrew v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling fallible_collections v0.4.3
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling mozjpeg-sys v0.10.13
[INFO] [stderr]    Compiling ouroboros v0.13.0
[INFO] [stderr]    Compiling genmesh v0.6.2
[INFO] [stderr]    Compiling calloop v0.6.5
[INFO] [stderr]    Compiling obj v0.10.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling wayland-commons v0.28.6
[INFO] [stderr]    Compiling mozjpeg v0.8.24
[INFO] [stderr]    Compiling tiff v0.6.1
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling wayland-cursor v0.28.6
[INFO] [stderr]    Compiling wayland-egl v0.28.6
[INFO] [stderr]    Compiling nokhwa v0.8.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.12.3
[INFO] [stderr]    Compiling glutin v0.27.0
[INFO] [stderr]    Compiling stream-view v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `current_device_index`
[INFO] [stdout]  --> src/frame_grabber.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     current_device_index: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_format`
[INFO] [stdout]  --> src/frame_grabber.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     current_format: Option<CameraFormat>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `list_devices`
[INFO] [stdout]   --> src/frame_grabber.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn list_devices() -> Result<Vec<(usize, String)>, NokhwaError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_device`
[INFO] [stdout]   --> src/frame_grabber.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn change_device(&mut self, index: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `list_supported_modes`
[INFO] [stdout]   --> src/frame_grabber.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn list_supported_modes(&mut self) -> Result<Vec<CameraFormat>, NokhwaError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_mode`
[INFO] [stdout]   --> src/frame_grabber.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn change_mode(&self) {}
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_stream`
[INFO] [stdout]   --> src/frame_grabber.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn open_stream(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frame_grabber.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         self.device.set_index(index);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 21s
[INFO] running `Command { std: "docker" "inspect" "dcd0e9b673d6818b2cf4dd82fb5c0f1c3a05d951573beaab9a2fed4237c1adb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcd0e9b673d6818b2cf4dd82fb5c0f1c3a05d951573beaab9a2fed4237c1adb7", kill_on_drop: false }`
[INFO] [stdout] dcd0e9b673d6818b2cf4dd82fb5c0f1c3a05d951573beaab9a2fed4237c1adb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0e1a0b20e4cf0920b765ee2f7dd30421327f6d9ab368c1d9152fdbadaa44414
[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" "a0e1a0b20e4cf0920b765ee2f7dd30421327f6d9ab368c1d9152fdbadaa44414", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling stream-view v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `current_device_index`
[INFO] [stdout]  --> src/frame_grabber.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     current_device_index: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_format`
[INFO] [stdout]  --> src/frame_grabber.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     current_format: Option<CameraFormat>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `list_devices`
[INFO] [stdout]   --> src/frame_grabber.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn list_devices() -> Result<Vec<(usize, String)>, NokhwaError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_device`
[INFO] [stdout]   --> src/frame_grabber.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn change_device(&mut self, index: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `list_supported_modes`
[INFO] [stdout]   --> src/frame_grabber.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn list_supported_modes(&mut self) -> Result<Vec<CameraFormat>, NokhwaError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_mode`
[INFO] [stdout]   --> src/frame_grabber.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn change_mode(&self) {}
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_stream`
[INFO] [stdout]   --> src/frame_grabber.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn open_stream(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frame_grabber.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         self.device.set_index(index);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `Command { std: "docker" "inspect" "a0e1a0b20e4cf0920b765ee2f7dd30421327f6d9ab368c1d9152fdbadaa44414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0e1a0b20e4cf0920b765ee2f7dd30421327f6d9ab368c1d9152fdbadaa44414", kill_on_drop: false }`
[INFO] [stdout] a0e1a0b20e4cf0920b765ee2f7dd30421327f6d9ab368c1d9152fdbadaa44414
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] 282cedb83ad23b806f2474264b39ebf0376816f9fd5f8909a4ee64422d2fa05f
[INFO] running `Command { std: "docker" "start" "-a" "282cedb83ad23b806f2474264b39ebf0376816f9fd5f8909a4ee64422d2fa05f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `current_device_index`
[INFO] [stderr]  --> src/frame_grabber.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     current_device_index: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `current_format`
[INFO] [stderr]  --> src/frame_grabber.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     current_format: Option<CameraFormat>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `list_devices`
[INFO] [stderr]   --> src/frame_grabber.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn list_devices() -> Result<Vec<(usize, String)>, NokhwaError> {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `change_device`
[INFO] [stderr]   --> src/frame_grabber.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn change_device(&mut self, index: usize) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `list_supported_modes`
[INFO] [stderr]   --> src/frame_grabber.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn list_supported_modes(&mut self) -> Result<Vec<CameraFormat>, NokhwaError> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `change_mode`
[INFO] [stderr]   --> src/frame_grabber.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn change_mode(&self) {}
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `open_stream`
[INFO] [stderr]   --> src/frame_grabber.rs:69:12
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn open_stream(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/frame_grabber.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         self.device.set_index(index);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `stream-view` (bin "stream-view" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stream_view-52341c59b5d1d9a9)
[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" "282cedb83ad23b806f2474264b39ebf0376816f9fd5f8909a4ee64422d2fa05f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "282cedb83ad23b806f2474264b39ebf0376816f9fd5f8909a4ee64422d2fa05f", kill_on_drop: false }`
[INFO] [stdout] 282cedb83ad23b806f2474264b39ebf0376816f9fd5f8909a4ee64422d2fa05f