[INFO] cloning repository https://github.com/atherchris/chaud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/atherchris/chaud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatherchris%2Fchaud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatherchris%2Fchaud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a5343c251fd252d06aeaf20c7fb7af65b6866a4
[INFO] checking atherchris/chaud against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatherchris%2Fchaud" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/atherchris/chaud on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/atherchris/chaud
[INFO] finished tweaking git repo https://github.com/atherchris/chaud
[INFO] tweaked toml for git repo https://github.com/atherchris/chaud written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/atherchris/chaud already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cty v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "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] 632929a6ba2605743a47fc2f23dd60e3dfc503aa5021e1d9efc1f17436a1a9a3
[INFO] running `Command { std: "docker" "start" "-a" "632929a6ba2605743a47fc2f23dd60e3dfc503aa5021e1d9efc1f17436a1a9a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "632929a6ba2605743a47fc2f23dd60e3dfc503aa5021e1d9efc1f17436a1a9a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "632929a6ba2605743a47fc2f23dd60e3dfc503aa5021e1d9efc1f17436a1a9a3", kill_on_drop: false }`
[INFO] [stdout] 632929a6ba2605743a47fc2f23dd60e3dfc503aa5021e1d9efc1f17436a1a9a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04d9934a28e2de608f1f465fb427968043023ac1fdc2c7434b57799f2dc971a2
[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" "04d9934a28e2de608f1f465fb427968043023ac1fdc2c7434b57799f2dc971a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling chaud v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cty v0.2.1
[INFO] [stdout] warning: unused variable: `decoder`
[INFO] [stdout]    --> src/codec/flac.rs:205:30
[INFO] [stdout]     |
[INFO] [stdout] 205 | extern "C" fn error_callback(decoder: *mut FLAC__StreamDecoder, status: FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void) {
[INFO] [stdout]     |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decoder`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status`
[INFO] [stdout]    --> src/codec/flac.rs:205:65
[INFO] [stdout]     |
[INFO] [stdout] 205 | extern "C" fn error_callback(decoder: *mut FLAC__StreamDecoder, status: FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void) {
[INFO] [stdout]     |                                                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]    --> src/codec/flac.rs:205:105
[INFO] [stdout]     |
[INFO] [stdout] 205 | extern "C" fn error_callback(decoder: *mut FLAC__StreamDecoder, status: FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void) {
[INFO] [stdout]     |                                                                                                         ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/codec/flac.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |     let mut p_tx = &mut my_tx as *mut mpsc::Sender<Frame>;
[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: unused variable: `decoder`
[INFO] [stdout]    --> src/codec/flac.rs:205:30
[INFO] [stdout]     |
[INFO] [stdout] 205 | extern "C" fn error_callback(decoder: *mut FLAC__StreamDecoder, status: FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void) {
[INFO] [stdout]     |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_decoder`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status`
[INFO] [stdout]    --> src/codec/flac.rs:205:65
[INFO] [stdout]     |
[INFO] [stdout] 205 | extern "C" fn error_callback(decoder: *mut FLAC__StreamDecoder, status: FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void) {
[INFO] [stdout]     |                                                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]    --> src/codec/flac.rs:205:105
[INFO] [stdout]     |
[INFO] [stdout] 205 | extern "C" fn error_callback(decoder: *mut FLAC__StreamDecoder, status: FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void) {
[INFO] [stdout]     |                                                                                                         ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_wav`
[INFO] [stdout]   --> src/codec/wav.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn write_wav(path: &str, rx: mpsc::Receiver<Frame>) {
[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: `FLAC__int8`
[INFO] [stdout]   --> src/codec/flac.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | type FLAC__int8 = i8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__uint8`
[INFO] [stdout]   --> src/codec/flac.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | type FLAC__uint8 = u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__int16`
[INFO] [stdout]   --> src/codec/flac.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | type FLAC__int16 = i16;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__int64`
[INFO] [stdout]   --> src/codec/flac.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | type FLAC__int64 = i64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__uint16`
[INFO] [stdout]   --> src/codec/flac.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | type FLAC__uint16 = u16;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__uint32`
[INFO] [stdout]   --> src/codec/flac.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | type FLAC__uint32 = u32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__byte`
[INFO] [stdout]   --> src/codec/flac.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | type FLAC__byte = FLAC__uint8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FLAC__StreamDecoderState`
[INFO] [stdout]   --> src/codec/flac.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum FLAC__StreamDecoderState {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_OK`
[INFO] [stdout]   --> src/codec/flac.rs:61:2
[INFO] [stdout]    |
[INFO] [stdout] 61 |     FLAC__STREAM_DECODER_INIT_STATUS_OK = 0,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_UNSUPPORTED_CONTAINER`
[INFO] [stdout]   --> src/codec/flac.rs:62:2
[INFO] [stdout]    |
[INFO] [stdout] 62 |     FLAC__STREAM_DECODER_INIT_STATUS_UNSUPPORTED_CONTAINER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS`
[INFO] [stdout]   --> src/codec/flac.rs:63:2
[INFO] [stdout]    |
[INFO] [stdout] 63 |     FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR`
[INFO] [stdout]   --> src/codec/flac.rs:64:2
[INFO] [stdout]    |
[INFO] [stdout] 64 |     FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE`
[INFO] [stdout]   --> src/codec/flac.rs:65:2
[INFO] [stdout]    |
[INFO] [stdout] 65 |     FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED`
[INFO] [stdout]   --> src/codec/flac.rs:66:2
[INFO] [stdout]    |
[INFO] [stdout] 66 |     FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR`
[INFO] [stdout]   --> src/codec/flac.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER`
[INFO] [stdout]   --> src/codec/flac.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS`
[INFO] [stdout]   --> src/codec/flac.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS`
[INFO] [stdout]   --> src/codec/flac.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE`
[INFO] [stdout]   --> src/codec/flac.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE`
[INFO] [stdout]   --> src/codec/flac.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE`
[INFO] [stdout]   --> src/codec/flac.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER`
[INFO] [stdout]   --> src/codec/flac.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION`
[INFO] [stdout]   --> src/codec/flac.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER`
[INFO] [stdout]   --> src/codec/flac.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE`
[INFO] [stdout]   --> src/codec/flac.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA`
[INFO] [stdout]   --> src/codec/flac.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED`
[INFO] [stdout]   --> src/codec/flac.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FLAC__StreamDecoderReadStatus`
[INFO] [stdout]   --> src/codec/flac.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 | enum FLAC__StreamDecoderReadStatus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_WRITE_STATUS_ABORT`
[INFO] [stdout]    --> src/codec/flac.rs:100:2
[INFO] [stdout]     |
[INFO] [stdout] 100 |     FLAC__STREAM_DECODER_WRITE_STATUS_ABORT,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC`
[INFO] [stdout]    --> src/codec/flac.rs:105:2
[INFO] [stdout]     |
[INFO] [stdout] 105 |     FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER`
[INFO] [stdout]    --> src/codec/flac.rs:106:2
[INFO] [stdout]     |
[INFO] [stdout] 106 |     FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH`
[INFO] [stdout]    --> src/codec/flac.rs:107:2
[INFO] [stdout]     |
[INFO] [stdout] 107 |     FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM`
[INFO] [stdout]    --> src/codec/flac.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__StreamDecoderWriteCallback`
[INFO] [stdout]    --> src/codec/flac.rs:117:1
[INFO] [stdout]     |
[INFO] [stdout] 117 | type FLAC__StreamDecoderWriteCallback =  Option<extern "C" fn(*mut FLAC__StreamDecoder, *mut FLAC__Frame, *mut *mut FLAC__int32, tx: *mut cty::c_void) -> FLAC__StreamDecoderWriteStatus>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__StreamDecoderMetadataCallback`
[INFO] [stdout]    --> src/codec/flac.rs:118:1
[INFO] [stdout]     |
[INFO] [stdout] 118 | type FLAC__StreamDecoderMetadataCallback = Option<extern "C" fn(*mut FLAC__StreamDecoder, *mut FLAC__StreamMetadata, tx: *mut cty::c_void)>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__StreamDecoderErrorCallback`
[INFO] [stdout]    --> src/codec/flac.rs:119:1
[INFO] [stdout]     |
[INFO] [stdout] 119 | type FLAC__StreamDecoderErrorCallback = Option<extern "C" fn(*mut FLAC__StreamDecoder, FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void)>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_new`
[INFO] [stdout]    --> src/codec/flac.rs:131:1
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn FLAC__stream_decoder_new() -> *mut FLAC__StreamDecoder;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_delete`
[INFO] [stdout]    --> src/codec/flac.rs:132:1
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn FLAC__stream_decoder_delete(decoder: *mut FLAC__StreamDecoder);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/codec/flac.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |     let mut p_tx = &mut my_tx as *mut mpsc::Sender<Frame>;
[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: function is never used: `FLAC__stream_decoder_init_file`
[INFO] [stdout]    --> src/codec/flac.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | / fn FLAC__stream_decoder_init_file(decoder: *mut FLAC__StreamDecoder,
[INFO] [stdout] 135 | |     filename: *const cty::c_char,
[INFO] [stdout] 136 | |     write_callback: FLAC__StreamDecoderWriteCallback,
[INFO] [stdout] 137 | |     metadata_callback: FLAC__StreamDecoderMetadataCallback,
[INFO] [stdout] 138 | |     error_callback: FLAC__StreamDecoderErrorCallback,
[INFO] [stdout] 139 | |     client_data: *mut cty::c_void) -> FLAC__StreamDecoderInitStatus;
[INFO] [stdout]     | |____________________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_get_state`
[INFO] [stdout]    --> src/codec/flac.rs:141:1
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn FLAC__stream_decoder_get_state(decoder: *const FLAC__StreamDecoder) -> FLAC__StreamDecoderState;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_set_md5_checking`
[INFO] [stdout]    --> src/codec/flac.rs:143:1
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn FLAC__stream_decoder_set_md5_checking(decoder: *mut FLAC__StreamDecoder, value: FLAC__bool) -> FLAC__bool;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_process_until_end_of_stream`
[INFO] [stdout]    --> src/codec/flac.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn FLAC__stream_decoder_process_until_end_of_stream(decoder: *mut FLAC__StreamDecoder) -> FLAC__bool;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_finish`
[INFO] [stdout]    --> src/codec/flac.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn FLAC__stream_decoder_finish(decoder: *mut FLAC__StreamDecoder) -> FLAC__bool;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_flac`
[INFO] [stdout]    --> src/codec/flac.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 209 | pub fn read_flac(path: &str, tx: mpsc::Sender<Frame>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pack_pcm`
[INFO] [stdout]   --> src/codec/mod.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn pack_pcm(pcm: Vec<i32>, bits_per_sample: usize) -> Vec<u8> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_wav`
[INFO] [stdout]   --> src/codec/wav.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn write_wav(path: &str, rx: mpsc::Receiver<Frame>) {
[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: `FLAC__int8`
[INFO] [stdout]   --> src/codec/flac.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | type FLAC__int8 = i8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__uint8`
[INFO] [stdout]   --> src/codec/flac.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | type FLAC__uint8 = u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__int16`
[INFO] [stdout]   --> src/codec/flac.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | type FLAC__int16 = i16;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__int64`
[INFO] [stdout]   --> src/codec/flac.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | type FLAC__int64 = i64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__uint16`
[INFO] [stdout]   --> src/codec/flac.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | type FLAC__uint16 = u16;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__uint32`
[INFO] [stdout]   --> src/codec/flac.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | type FLAC__uint32 = u32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__byte`
[INFO] [stdout]   --> src/codec/flac.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | type FLAC__byte = FLAC__uint8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FLAC__StreamDecoderState`
[INFO] [stdout]   --> src/codec/flac.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum FLAC__StreamDecoderState {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_OK`
[INFO] [stdout]   --> src/codec/flac.rs:61:2
[INFO] [stdout]    |
[INFO] [stdout] 61 |     FLAC__STREAM_DECODER_INIT_STATUS_OK = 0,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_UNSUPPORTED_CONTAINER`
[INFO] [stdout]   --> src/codec/flac.rs:62:2
[INFO] [stdout]    |
[INFO] [stdout] 62 |     FLAC__STREAM_DECODER_INIT_STATUS_UNSUPPORTED_CONTAINER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS`
[INFO] [stdout]   --> src/codec/flac.rs:63:2
[INFO] [stdout]    |
[INFO] [stdout] 63 |     FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR`
[INFO] [stdout]   --> src/codec/flac.rs:64:2
[INFO] [stdout]    |
[INFO] [stdout] 64 |     FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE`
[INFO] [stdout]   --> src/codec/flac.rs:65:2
[INFO] [stdout]    |
[INFO] [stdout] 65 |     FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED`
[INFO] [stdout]   --> src/codec/flac.rs:66:2
[INFO] [stdout]    |
[INFO] [stdout] 66 |     FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR`
[INFO] [stdout]   --> src/codec/flac.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER`
[INFO] [stdout]   --> src/codec/flac.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS`
[INFO] [stdout]   --> src/codec/flac.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS`
[INFO] [stdout]   --> src/codec/flac.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE`
[INFO] [stdout]   --> src/codec/flac.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE`
[INFO] [stdout]   --> src/codec/flac.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE`
[INFO] [stdout]   --> src/codec/flac.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER`
[INFO] [stdout]   --> src/codec/flac.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION`
[INFO] [stdout]   --> src/codec/flac.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER`
[INFO] [stdout]   --> src/codec/flac.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE`
[INFO] [stdout]   --> src/codec/flac.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA`
[INFO] [stdout]   --> src/codec/flac.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED`
[INFO] [stdout]   --> src/codec/flac.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FLAC__StreamDecoderReadStatus`
[INFO] [stdout]   --> src/codec/flac.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 | enum FLAC__StreamDecoderReadStatus {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_WRITE_STATUS_ABORT`
[INFO] [stdout]    --> src/codec/flac.rs:100:2
[INFO] [stdout]     |
[INFO] [stdout] 100 |     FLAC__STREAM_DECODER_WRITE_STATUS_ABORT,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC`
[INFO] [stdout]    --> src/codec/flac.rs:105:2
[INFO] [stdout]     |
[INFO] [stdout] 105 |     FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER`
[INFO] [stdout]    --> src/codec/flac.rs:106:2
[INFO] [stdout]     |
[INFO] [stdout] 106 |     FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH`
[INFO] [stdout]    --> src/codec/flac.rs:107:2
[INFO] [stdout]     |
[INFO] [stdout] 107 |     FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM`
[INFO] [stdout]    --> src/codec/flac.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__StreamDecoderWriteCallback`
[INFO] [stdout]    --> src/codec/flac.rs:117:1
[INFO] [stdout]     |
[INFO] [stdout] 117 | type FLAC__StreamDecoderWriteCallback =  Option<extern "C" fn(*mut FLAC__StreamDecoder, *mut FLAC__Frame, *mut *mut FLAC__int32, tx: *mut cty::c_void) -> FLAC__StreamDecoderWriteStatus>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__StreamDecoderMetadataCallback`
[INFO] [stdout]    --> src/codec/flac.rs:118:1
[INFO] [stdout]     |
[INFO] [stdout] 118 | type FLAC__StreamDecoderMetadataCallback = Option<extern "C" fn(*mut FLAC__StreamDecoder, *mut FLAC__StreamMetadata, tx: *mut cty::c_void)>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FLAC__StreamDecoderErrorCallback`
[INFO] [stdout]    --> src/codec/flac.rs:119:1
[INFO] [stdout]     |
[INFO] [stdout] 119 | type FLAC__StreamDecoderErrorCallback = Option<extern "C" fn(*mut FLAC__StreamDecoder, FLAC__StreamDecoderErrorStatus, tx: *mut cty::c_void)>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_new`
[INFO] [stdout]    --> src/codec/flac.rs:131:1
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn FLAC__stream_decoder_new() -> *mut FLAC__StreamDecoder;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_delete`
[INFO] [stdout]    --> src/codec/flac.rs:132:1
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn FLAC__stream_decoder_delete(decoder: *mut FLAC__StreamDecoder);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_init_file`
[INFO] [stdout]    --> src/codec/flac.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | / fn FLAC__stream_decoder_init_file(decoder: *mut FLAC__StreamDecoder,
[INFO] [stdout] 135 | |     filename: *const cty::c_char,
[INFO] [stdout] 136 | |     write_callback: FLAC__StreamDecoderWriteCallback,
[INFO] [stdout] 137 | |     metadata_callback: FLAC__StreamDecoderMetadataCallback,
[INFO] [stdout] 138 | |     error_callback: FLAC__StreamDecoderErrorCallback,
[INFO] [stdout] 139 | |     client_data: *mut cty::c_void) -> FLAC__StreamDecoderInitStatus;
[INFO] [stdout]     | |____________________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_get_state`
[INFO] [stdout]    --> src/codec/flac.rs:141:1
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn FLAC__stream_decoder_get_state(decoder: *const FLAC__StreamDecoder) -> FLAC__StreamDecoderState;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_set_md5_checking`
[INFO] [stdout]    --> src/codec/flac.rs:143:1
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn FLAC__stream_decoder_set_md5_checking(decoder: *mut FLAC__StreamDecoder, value: FLAC__bool) -> FLAC__bool;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_process_until_end_of_stream`
[INFO] [stdout]    --> src/codec/flac.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn FLAC__stream_decoder_process_until_end_of_stream(decoder: *mut FLAC__StreamDecoder) -> FLAC__bool;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `FLAC__stream_decoder_finish`
[INFO] [stdout]    --> src/codec/flac.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn FLAC__stream_decoder_finish(decoder: *mut FLAC__StreamDecoder) -> FLAC__bool;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_flac`
[INFO] [stdout]    --> src/codec/flac.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 209 | pub fn read_flac(path: &str, tx: mpsc::Sender<Frame>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pack_pcm`
[INFO] [stdout]   --> src/codec/mod.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn pack_pcm(pcm: Vec<i32>, bits_per_sample: usize) -> Vec<u8> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 50 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 50 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "04d9934a28e2de608f1f465fb427968043023ac1fdc2c7434b57799f2dc971a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d9934a28e2de608f1f465fb427968043023ac1fdc2c7434b57799f2dc971a2", kill_on_drop: false }`
[INFO] [stdout] 04d9934a28e2de608f1f465fb427968043023ac1fdc2c7434b57799f2dc971a2