[INFO] cloning repository https://github.com/gituser12981u2/playback
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gituser12981u2/playback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgituser12981u2%2Fplayback", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgituser12981u2%2Fplayback'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgituser12981u2%2Fplayback: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/gituser12981u2/playback
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gituser12981u2/playback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgituser12981u2%2Fplayback", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgituser12981u2%2Fplayback'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96bc2befb660823ffa090796693bd557c7063719
[INFO] checking gituser12981u2/playback against try#d12484522bcab8d07e325c6570f226a2faace3f7 for pr-128425-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgituser12981u2%2Fplayback" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gituser12981u2/playback on toolchain d12484522bcab8d07e325c6570f226a2faace3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gituser12981u2/playback
[INFO] finished tweaking git repo https://github.com/gituser12981u2/playback
[INFO] tweaked toml for git repo https://github.com/gituser12981u2/playback written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gituser12981u2/playback 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" "+d12484522bcab8d07e325c6570f226a2faace3f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15c149eab33a04686a9904fe93644febf28304337003118727d90be406ab8766
[INFO] running `Command { std: "docker" "start" "-a" "15c149eab33a04686a9904fe93644febf28304337003118727d90be406ab8766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15c149eab33a04686a9904fe93644febf28304337003118727d90be406ab8766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15c149eab33a04686a9904fe93644febf28304337003118727d90be406ab8766", kill_on_drop: false }`
[INFO] [stdout] 15c149eab33a04686a9904fe93644febf28304337003118727d90be406ab8766
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6277341af59a4d81aebdc37955aa1e6598283238623f01f2e05a2c7c9162b75c
[INFO] running `Command { std: "docker" "start" "-a" "6277341af59a4d81aebdc37955aa1e6598283238623f01f2e05a2c7c9162b75c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]    Compiling thiserror-impl v1.0.43
[INFO] [stderr]     Checking playback v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]   --> src/codecs/flac/decoder.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 Ok(Some(block)) => {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit_depth`
[INFO] [stdout]    --> src/codecs/flac/subframe.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         bit_depth: u8,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bit_depth`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]   --> src/codecs/flac/decoder.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 Ok(Some(block)) => {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/codecs/flac/block.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Block {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 25 |     block_type: BlockType,
[INFO] [stdout] 26 |     length: usize, // This represents the length of the block in bytes
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Block` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_length` is never used
[INFO] [stdout]   --> src/codecs/flac/block.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bit_depth`
[INFO] [stdout]    --> src/codecs/flac/subframe.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         bit_depth: u8,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bit_depth`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sample_rate`, `num_channels`, and `bit_depth` are never read
[INFO] [stdout]    --> src/codecs/flac/data.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub struct ShortFormat {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] 194 |     pub sample_rate: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 195 |     pub num_channels: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 196 |     pub bit_depth: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ShortFormat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]    --> src/codecs/flac/data.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 200 | pub struct LongFormat {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 201 |     pub min_block_size: Option<u16>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 202 |     pub max_block_size: Option<u16>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 203 |     pub min_frame_size: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 204 |     pub max_frame_size: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 205 |     pub sample_rate: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 206 |     pub num_channels: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 207 |     pub bit_depth: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 208 |     pub total_samples: Option<u64>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 209 |     pub md5_signature: Option<Arc<Vec<u8>>>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LongFormat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/codecs/flac/frame.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Frame {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 11 |     sync_code: u16,                     // Synchronization code
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 12 |     block_strategy: bool,               // Block strategy
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     block_size: u32,                    // Block size (number of samples per channel)
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     sample_rate: u32,                   // Sample rate in Hz
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 15 |     channel_assignment: u8,             // Channel assignment
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 16 |     bit_depth: u8,                      // Bit depth
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 17 |     sample_number_or_frame_number: u64, // Sample number of first sample in frame
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 18 |     crc: u16,                           // Frame CRC-16
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `subframe_type` and `order` are never read
[INFO] [stdout]   --> src/codecs/flac/subframe.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Subframe {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 17 |     subframe_type: SubframeType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 18 |     order: u32,     // Order of the predictor polynomial--if applicable
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Subframe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_u32`, `read_u64`, `peek_u32`, and `skip` are never used
[INFO] [stdout]    --> src/common/stream.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 17  | impl Stream {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 116 |     pub fn read_u32(&mut self) -> Result<u32, AudioError> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub fn read_u64(&mut self) -> Result<u64, AudioError> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn peek_u32(&mut self) -> Result<u32, AudioError> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn skip(&mut self, num_bytes: usize) -> Result<(), AudioError> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/codecs/flac/frame.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         stream.read_bit();
[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] 34 |         let _ = stream.read_bit();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/codecs/flac/block.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Block {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 25 |     block_type: BlockType,
[INFO] [stdout] 26 |     length: usize, // This represents the length of the block in bytes
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Block` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_length` is never used
[INFO] [stdout]   --> src/codecs/flac/block.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_length(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sample_rate`, `num_channels`, and `bit_depth` are never read
[INFO] [stdout]    --> src/codecs/flac/data.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub struct ShortFormat {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] 194 |     pub sample_rate: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 195 |     pub num_channels: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 196 |     pub bit_depth: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ShortFormat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]    --> src/codecs/flac/data.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 200 | pub struct LongFormat {
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] 201 |     pub min_block_size: Option<u16>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 202 |     pub max_block_size: Option<u16>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 203 |     pub min_frame_size: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 204 |     pub max_frame_size: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 205 |     pub sample_rate: Option<u32>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 206 |     pub num_channels: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 207 |     pub bit_depth: Option<u8>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 208 |     pub total_samples: Option<u64>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 209 |     pub md5_signature: Option<Arc<Vec<u8>>>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LongFormat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/codecs/flac/frame.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Frame {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 11 |     sync_code: u16,                     // Synchronization code
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 12 |     block_strategy: bool,               // Block strategy
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     block_size: u32,                    // Block size (number of samples per channel)
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     sample_rate: u32,                   // Sample rate in Hz
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 15 |     channel_assignment: u8,             // Channel assignment
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 16 |     bit_depth: u8,                      // Bit depth
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 17 |     sample_number_or_frame_number: u64, // Sample number of first sample in frame
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 18 |     crc: u16,                           // Frame CRC-16
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `subframe_type` and `order` are never read
[INFO] [stdout]   --> src/codecs/flac/subframe.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Subframe {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 17 |     subframe_type: SubframeType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 18 |     order: u32,     // Order of the predictor polynomial--if applicable
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Subframe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_u32`, `read_u64`, `peek_u32`, and `skip` are never used
[INFO] [stdout]    --> src/common/stream.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 17  | impl Stream {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 116 |     pub fn read_u32(&mut self) -> Result<u32, AudioError> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub fn read_u64(&mut self) -> Result<u64, AudioError> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn peek_u32(&mut self) -> Result<u32, AudioError> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn skip(&mut self, num_bytes: usize) -> Result<(), AudioError> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/codecs/flac/frame.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         stream.read_bit();
[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] 34 |         let _ = stream.read_bit();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "6277341af59a4d81aebdc37955aa1e6598283238623f01f2e05a2c7c9162b75c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6277341af59a4d81aebdc37955aa1e6598283238623f01f2e05a2c7c9162b75c", kill_on_drop: false }`
[INFO] [stdout] 6277341af59a4d81aebdc37955aa1e6598283238623f01f2e05a2c7c9162b75c
