[INFO] cloning repository https://github.com/JojoFlex1/music_player [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JojoFlex1/music_player" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJojoFlex1%2Fmusic_player", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJojoFlex1%2Fmusic_player'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 516a02c952d8128dd99977d1a0e485879dffed9c [INFO] checking JojoFlex1/music_player against try#8a0378607d6b34c242e3bfa75554871be641864b for pr-143028 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJojoFlex1%2Fmusic_player" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/JojoFlex1/music_player [INFO] finished tweaking git repo https://github.com/JojoFlex1/music_player [INFO] tweaked toml for git repo https://github.com/JojoFlex1/music_player written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/JojoFlex1/music_player on toolchain 8a0378607d6b34c242e3bfa75554871be641864b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/JojoFlex1/music_player already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking JojoFlex1/music_player against try#8a0378607d6b34c242e3bfa75554871be641864b for pr-143028 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJojoFlex1%2Fmusic_player" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/JojoFlex1/music_player [INFO] finished tweaking git repo https://github.com/JojoFlex1/music_player [INFO] tweaked toml for git repo https://github.com/JojoFlex1/music_player written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/JojoFlex1/music_player on toolchain 8a0378607d6b34c242e3bfa75554871be641864b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/JojoFlex1/music_player already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cmake v0.1.51 [INFO] [stderr] Downloaded soloud v1.0.5 [INFO] [stderr] Downloaded bytemuck v1.17.1 [INFO] [stderr] Downloaded cc v1.1.15 [INFO] [stderr] Downloaded fltk v1.4.33 [INFO] [stderr] Downloaded ttf-parser v0.24.1 [INFO] [stderr] Downloaded soloud-sys v1.0.5 [INFO] [stderr] Downloaded fltk-sys v1.4.33 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 378cf7a704955bcdef9ae73882a0ee209c5b1468616585c92e00f0e05da1fe9c [INFO] running `Command { std: "docker" "start" "-a" "378cf7a704955bcdef9ae73882a0ee209c5b1468616585c92e00f0e05da1fe9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "378cf7a704955bcdef9ae73882a0ee209c5b1468616585c92e00f0e05da1fe9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "378cf7a704955bcdef9ae73882a0ee209c5b1468616585c92e00f0e05da1fe9c", kill_on_drop: false }` [INFO] [stdout] 378cf7a704955bcdef9ae73882a0ee209c5b1468616585c92e00f0e05da1fe9c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0d0074c027d309449210268b551f381cb0380fd925e3cbceefcd985bdc905ca9 [INFO] running `Command { std: "docker" "start" "-a" "0d0074c027d309449210268b551f381cb0380fd925e3cbceefcd985bdc905ca9", kill_on_drop: false }` [INFO] [stderr] Compiling shlex v1.3.0 [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling pkg-config v0.3.30 [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking bytemuck v1.17.1 [INFO] [stderr] Checking bitflags v2.6.0 [INFO] [stderr] Checking arrayvec v0.7.6 [INFO] [stderr] Checking log v0.4.22 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking encoding_rs v0.8.34 [INFO] [stderr] Compiling cc v1.1.15 [INFO] [stderr] Compiling paste v1.0.15 [INFO] [stderr] Checking symphonia-core v0.5.4 [INFO] [stderr] Compiling crossbeam-utils v0.8.20 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking tinyvec_macros v0.1.1 [INFO] [stderr] Compiling cpal v0.15.3 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Compiling alsa-sys v0.3.1 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking ogg v0.8.0 [INFO] [stderr] Compiling cmake v0.1.51 [INFO] [stderr] Checking tinyvec v1.8.0 [INFO] [stderr] Checking symphonia-metadata v0.5.4 [INFO] [stderr] Compiling thiserror v1.0.63 [INFO] [stderr] Checking symphonia-bundle-mp3 v0.5.4 [INFO] [stderr] Checking dasp_sample v0.11.0 [INFO] [stderr] Checking crossbeam-channel v0.5.13 [INFO] [stderr] Checking claxon v0.4.3 [INFO] [stderr] Checking alsa v0.9.1 [INFO] [stderr] Compiling fltk-sys v1.4.33 [INFO] [stderr] Compiling soloud-sys v1.0.5 [INFO] [stderr] Checking hound v3.5.1 [INFO] [stderr] Checking symphonia v0.5.4 [INFO] [stderr] Checking ttf-parser v0.24.1 [INFO] [stderr] Checking lewton v0.10.2 [INFO] [stderr] Checking once_cell v1.19.0 [INFO] [stderr] Checking rodio v0.17.3 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Checking soloud v1.0.5 [INFO] [stderr] Checking fltk v1.4.33 [INFO] [stderr] Checking music_player v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `forward_audio`, `pause_audio`, `play_audio`, `rewind_audio`, and `stop_audio` [INFO] [stdout] --> src/main.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | use audio::{play_audio, pause_audio, stop_audio, forward_audio, rewind_audio}; // Import only used functions [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let mut sl = SOLOUND.lock().unwrap(); [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] --> src/audio.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `CURRENT_HANDLE` is never used [INFO] [stdout] --> src/audio.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | static CURRENT_HANDLE: Mutex> = Mutex::new(None); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `load_audio` is never used [INFO] [stdout] --> src/audio.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn load_audio(file_path: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `play_audio` is never used [INFO] [stdout] --> src/audio.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | pub fn play_audio(file_path: &str) -> Result<(), AudioError> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `pause_audio` is never used [INFO] [stdout] --> src/audio.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn pause_audio() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `stop_audio` is never used [INFO] [stdout] --> src/audio.rs:52:8 [INFO] [stdout] | [INFO] [stdout] 52 | pub fn stop_audio() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `forward_audio` is never used [INFO] [stdout] --> src/audio.rs:60:8 [INFO] [stdout] | [INFO] [stdout] 60 | pub fn forward_audio(seconds: f32) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `rewind_audio` is never used [INFO] [stdout] --> src/audio.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | pub fn rewind_audio(seconds: f32) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `forward_audio`, `pause_audio`, `play_audio`, `rewind_audio`, and `stop_audio` [INFO] [stdout] --> src/main.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | use audio::{play_audio, pause_audio, stop_audio, forward_audio, rewind_audio}; // Import only used functions [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/audio.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | sl.seek(handle, position + seconds as f64); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 64 | let _ = sl.seek(handle, position + seconds as f64); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/audio.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | sl.seek(handle, position - seconds as f64); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = sl.seek(handle, position - seconds as f64); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let mut sl = SOLOUND.lock().unwrap(); [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] --> src/audio.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/audio.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let mut sl = SOLOUND.lock().unwrap(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `CURRENT_HANDLE` is never used [INFO] [stdout] --> src/audio.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | static CURRENT_HANDLE: Mutex> = Mutex::new(None); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `load_audio` is never used [INFO] [stdout] --> src/audio.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn load_audio(file_path: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `play_audio` is never used [INFO] [stdout] --> src/audio.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | pub fn play_audio(file_path: &str) -> Result<(), AudioError> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `pause_audio` is never used [INFO] [stdout] --> src/audio.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn pause_audio() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `stop_audio` is never used [INFO] [stdout] --> src/audio.rs:52:8 [INFO] [stdout] | [INFO] [stdout] 52 | pub fn stop_audio() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `forward_audio` is never used [INFO] [stdout] --> src/audio.rs:60:8 [INFO] [stdout] | [INFO] [stdout] 60 | pub fn forward_audio(seconds: f32) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `rewind_audio` is never used [INFO] [stdout] --> src/audio.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | pub fn rewind_audio(seconds: f32) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/audio.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | sl.seek(handle, position + seconds as f64); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 64 | let _ = sl.seek(handle, position + seconds as f64); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/audio.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | sl.seek(handle, position - seconds as f64); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 72 | let _ = sl.seek(handle, position - seconds as f64); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 02s [INFO] running `Command { std: "docker" "inspect" "0d0074c027d309449210268b551f381cb0380fd925e3cbceefcd985bdc905ca9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0d0074c027d309449210268b551f381cb0380fd925e3cbceefcd985bdc905ca9", kill_on_drop: false }` [INFO] [stdout] 0d0074c027d309449210268b551f381cb0380fd925e3cbceefcd985bdc905ca9