[INFO] fetching crate cauldron 0.0.3...
[INFO] testing cauldron-0.0.3 against 1.47.0 for beta-1.48-1
[INFO] extracting crate cauldron 0.0.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate cauldron 0.0.3 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cauldron 0.0.3
[INFO] finished tweaking crates.io crate cauldron 0.0.3
[INFO] tweaked toml for crates.io crate cauldron 0.0.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate cauldron 0.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c58f56031753d7bd467d7e7508fe68b00cc9a93681af4b0cc5e5fc08592aa26
[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" "7c58f56031753d7bd467d7e7508fe68b00cc9a93681af4b0cc5e5fc08592aa26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c58f56031753d7bd467d7e7508fe68b00cc9a93681af4b0cc5e5fc08592aa26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c58f56031753d7bd467d7e7508fe68b00cc9a93681af4b0cc5e5fc08592aa26", kill_on_drop: false }`
[INFO] [stdout] 7c58f56031753d7bd467d7e7508fe68b00cc9a93681af4b0cc5e5fc08592aa26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bf42e90c491e2bb2dbca14f1c085a4bbd99b557908237c8117c918f5a09fa79
[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" "9bf42e90c491e2bb2dbca14f1c085a4bbd99b557908237c8117c918f5a09fa79", kill_on_drop: false }`
[INFO] [stderr]    Compiling cauldron v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/mp3/frame.rs:407:29
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_info`
[INFO] [stdout]    --> src/mp3/frame.rs:407:44
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/mp3/frame.rs:412:5
[INFO] [stdout]     |
[INFO] [stdout] 412 |     buffer: &[u8],
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intensity_stereo_channel`
[INFO] [stdout]    --> src/mp3/frame.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 |     intensity_stereo_channel: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_info`
[INFO] [stdout]    --> src/mp3/frame.rs:414:5
[INFO] [stdout]     |
[INFO] [stdout] 414 |     channel_info: &mut GranuleChannel,
[INFO] [stdout]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bits_per_sample`
[INFO] [stdout]   --> src/mp3/frame.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     bits_per_sample: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bits_per_sample`
[INFO] [stdout]   --> src/mp3/frame.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn bits_per_sample(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "9bf42e90c491e2bb2dbca14f1c085a4bbd99b557908237c8117c918f5a09fa79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bf42e90c491e2bb2dbca14f1c085a4bbd99b557908237c8117c918f5a09fa79", kill_on_drop: false }`
[INFO] [stdout] 9bf42e90c491e2bb2dbca14f1c085a4bbd99b557908237c8117c918f5a09fa79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29e59898e544efe91ddd05bd5ff277bdccb0ca374e51a97f1143ab99df695413
[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" "29e59898e544efe91ddd05bd5ff277bdccb0ca374e51a97f1143ab99df695413", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.113
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/mp3/frame.rs:407:29
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_info`
[INFO] [stdout]    --> src/mp3/frame.rs:407:44
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/mp3/frame.rs:412:5
[INFO] [stdout]     |
[INFO] [stdout] 412 |     buffer: &[u8],
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intensity_stereo_channel`
[INFO] [stdout]    --> src/mp3/frame.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 |     intensity_stereo_channel: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_info`
[INFO] [stdout]    --> src/mp3/frame.rs:414:5
[INFO] [stdout]     |
[INFO] [stdout] 414 |     channel_info: &mut GranuleChannel,
[INFO] [stdout]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bits_per_sample`
[INFO] [stdout]   --> src/mp3/frame.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     bits_per_sample: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bits_per_sample`
[INFO] [stdout]   --> src/mp3/frame.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn bits_per_sample(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.19
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling cauldron v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/mp3/frame.rs:407:29
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_info`
[INFO] [stdout]    --> src/mp3/frame.rs:407:44
[INFO] [stdout]     |
[INFO] [stdout] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/mp3/frame.rs:412:5
[INFO] [stdout]     |
[INFO] [stdout] 412 |     buffer: &[u8],
[INFO] [stdout]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intensity_stereo_channel`
[INFO] [stdout]    --> src/mp3/frame.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 |     intensity_stereo_channel: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_info`
[INFO] [stdout]    --> src/mp3/frame.rs:414:5
[INFO] [stdout]     |
[INFO] [stdout] 414 |     channel_info: &mut GranuleChannel,
[INFO] [stdout]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bits_per_sample`
[INFO] [stdout]   --> src/mp3/frame.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     bits_per_sample: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bits_per_sample`
[INFO] [stdout]   --> src/mp3/frame.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn bits_per_sample(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 48s
[INFO] running `Command { std: "docker" "inspect" "29e59898e544efe91ddd05bd5ff277bdccb0ca374e51a97f1143ab99df695413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29e59898e544efe91ddd05bd5ff277bdccb0ca374e51a97f1143ab99df695413", kill_on_drop: false }`
[INFO] [stdout] 29e59898e544efe91ddd05bd5ff277bdccb0ca374e51a97f1143ab99df695413
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c64e3559c86c04f4672ae26df9ac15e9ba17bb815e7c8a437d320365ce177777
[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" "c64e3559c86c04f4672ae26df9ac15e9ba17bb815e7c8a437d320365ce177777", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/mp3/frame.rs:407:29
[INFO] [stderr]     |
[INFO] [stderr] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stderr]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel_info`
[INFO] [stderr]    --> src/mp3/frame.rs:407:44
[INFO] [stderr]     |
[INFO] [stderr] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/mp3/frame.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     buffer: &[u8],
[INFO] [stderr]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_stereo_channel`
[INFO] [stderr]    --> src/mp3/frame.rs:413:5
[INFO] [stderr]     |
[INFO] [stderr] 413 |     intensity_stereo_channel: bool,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo_channel`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel_info`
[INFO] [stderr]    --> src/mp3/frame.rs:414:5
[INFO] [stderr]     |
[INFO] [stderr] 414 |     channel_info: &mut GranuleChannel,
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bits_per_sample`
[INFO] [stderr]   --> src/mp3/frame.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     bits_per_sample: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bits_per_sample`
[INFO] [stderr]   --> src/mp3/frame.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn bits_per_sample(&self) -> u32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/mp3/frame.rs:407:29
[INFO] [stderr]     |
[INFO] [stderr] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stderr]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel_info`
[INFO] [stderr]    --> src/mp3/frame.rs:407:44
[INFO] [stderr]     |
[INFO] [stderr] 407 | fn read_mpeg1_scale_factors(buffer: &[u8], channel_info: &mut GranuleChannel) -> Result<()> {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/mp3/frame.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     buffer: &[u8],
[INFO] [stderr]     |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_stereo_channel`
[INFO] [stderr]    --> src/mp3/frame.rs:413:5
[INFO] [stderr]     |
[INFO] [stderr] 413 |     intensity_stereo_channel: bool,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo_channel`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel_info`
[INFO] [stderr]    --> src/mp3/frame.rs:414:5
[INFO] [stderr]     |
[INFO] [stderr] 414 |     channel_info: &mut GranuleChannel,
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_info`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bits_per_sample`
[INFO] [stderr]   --> src/mp3/frame.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     bits_per_sample: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bits_per_sample`
[INFO] [stderr]   --> src/mp3/frame.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn bits_per_sample(&self) -> u32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cauldron-cb6f8824967a6bc9
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test flac::decoder::test_rice_to_signed ... ok
[INFO] [stdout] test utils::test_narrow_to_i8 ... ok
[INFO] [stdout] test utils::test_narrow_to_i24 ... ok
[INFO] [stdout] test utils::test_narrow_to_i16 ... ok
[INFO] [stderr]    Doc-tests cauldron
[INFO] [stdout] test flac::decoder::test_predict_lpc_low_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 7) ... ignored
[INFO] [stdout] test src/audio.rs - audio::AudioSegment::read_with_format (line 238) ... FAILED
[INFO] [stdout] test src/audio.rs - audio::AudioSegment::read (line 213) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/audio.rs - audio::AudioSegment::read_with_format (line 238) stdout ----
[INFO] [stdout] error[E0061]: this function takes 2 arguments but 1 argument was supplied
[INFO] [stdout]  --> src/audio.rs:242:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | match AudioSegment::read_with_format(
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 arguments
[INFO] [stdout] 8 |     std::path::Path::new("tests/samples/wav/test-s16le-44100Hz-mono.wav")) {
[INFO] [stdout]   |     --------------------------------------------------------------------- supplied 1 argument
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/audio.rs - audio::AudioSegment::read (line 213) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'Couldn't open example file: No such file or directory (os error 2)', src/audio.rs:9:13
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55cb901dc010 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x55cb901dc010 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55cb901dc010 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x55cb901dc010 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x55cb901f4c8c - core::fmt::write::h9ddafa4860d8adff
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stdout]    5:     0x55cb901da8a7 - std::io::Write::write_fmt::h1d2ee292d2b65481
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stdout]    6:     0x55cb901de0e0 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    7:     0x55cb901de0e0 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    8:     0x55cb901de0e0 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stdout]    9:     0x55cb901dde2c - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:219
[INFO] [stdout]   10:     0x55cb901de743 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stdout]   11:     0x55cb901de319 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stdout]   12:     0x55cb901dc49c - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   13:     0x55cb901de2d9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stdout]   14:     0x55cb901de28b - std::panicking::begin_panic_fmt::hc1b1320af38b7e12
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:429
[INFO] [stdout]   15:     0x55cb901b14ef - rust_out::main::h405f65324f7b53be
[INFO] [stdout]   16:     0x55cb901b1323 - core::ops::function::FnOnce::call_once::hdcd857a6fc725660
[INFO] [stdout]   17:     0x55cb901b1179 - std::sys_common::backtrace::__rust_begin_short_backtrace::h58530cce963ea820
[INFO] [stdout]   18:     0x55cb901b1209 - std::rt::lang_start::{{closure}}::had844b611966ddaf
[INFO] [stdout]   19:     0x55cb901deb41 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6a3209f124be2235
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:259
[INFO] [stdout]   20:     0x55cb901deb41 - std::panicking::try::do_call::h88ce358792b64df0
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   21:     0x55cb901deb41 - std::panicking::try::h6311c259678e50fc
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   22:     0x55cb901deb41 - std::panic::catch_unwind::h56c5716807d659a1
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   23:     0x55cb901deb41 - std::rt::lang_start_internal::h73711f37ecfcb277
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:51
[INFO] [stdout]   24:     0x55cb901b11e8 - std::rt::lang_start::h1b0fb7b0bf978bb4
[INFO] [stdout]   25:     0x55cb901b153b - main
[INFO] [stdout]   26:     0x7f9eb0ec00b3 - __libc_start_main
[INFO] [stdout]   27:     0x55cb901b10ae - _start
[INFO] [stdout]   28:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/audio.rs - audio::AudioSegment::read (line 213)
[INFO] [stdout]     src/audio.rs - audio::AudioSegment::read_with_format (line 238)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "c64e3559c86c04f4672ae26df9ac15e9ba17bb815e7c8a437d320365ce177777", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c64e3559c86c04f4672ae26df9ac15e9ba17bb815e7c8a437d320365ce177777", kill_on_drop: false }`
[INFO] [stdout] c64e3559c86c04f4672ae26df9ac15e9ba17bb815e7c8a437d320365ce177777
