[INFO] crate cauldron 0.0.3 is already in cache
[INFO] testing cauldron-0.0.3 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate cauldron 0.0.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cauldron 0.0.3 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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-2/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" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b9701fa298c4c18e8197234ed518e2fdab9fd6878f69436faa3c4ffd728dace
[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" "3b9701fa298c4c18e8197234ed518e2fdab9fd6878f69436faa3c4ffd728dace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b9701fa298c4c18e8197234ed518e2fdab9fd6878f69436faa3c4ffd728dace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b9701fa298c4c18e8197234ed518e2fdab9fd6878f69436faa3c4ffd728dace", kill_on_drop: false }`
[INFO] [stdout] 3b9701fa298c4c18e8197234ed518e2fdab9fd6878f69436faa3c4ffd728dace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7eaa8b792bc06c67402b6c2ee9c8dbc8321034d9ba06c9fdf30976fa23049576
[INFO] running `Command { std: "docker" "start" "-a" "7eaa8b792bc06c67402b6c2ee9c8dbc8321034d9ba06c9fdf30976fa23049576", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[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 2.86s
[INFO] running `Command { std: "docker" "inspect" "7eaa8b792bc06c67402b6c2ee9c8dbc8321034d9ba06c9fdf30976fa23049576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eaa8b792bc06c67402b6c2ee9c8dbc8321034d9ba06c9fdf30976fa23049576", kill_on_drop: false }`
[INFO] [stdout] 7eaa8b792bc06c67402b6c2ee9c8dbc8321034d9ba06c9fdf30976fa23049576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 81871645bc8b9dd54c0d953361fc3b30c538f3ee6e8534a36828ce854752121c
[INFO] running `Command { std: "docker" "start" "-a" "81871645bc8b9dd54c0d953361fc3b30c538f3ee6e8534a36828ce854752121c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling unicode-width v0.1.8
[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 same-file v1.0.6
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[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 clap v2.33.1
[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 num-traits v0.2.11
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[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 47s
[INFO] running `Command { std: "docker" "inspect" "81871645bc8b9dd54c0d953361fc3b30c538f3ee6e8534a36828ce854752121c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81871645bc8b9dd54c0d953361fc3b30c538f3ee6e8534a36828ce854752121c", kill_on_drop: false }`
[INFO] [stdout] 81871645bc8b9dd54c0d953361fc3b30c538f3ee6e8534a36828ce854752121c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 28f87fafe8540c48e74fe3b8c1c7f96f0b95909f4ad90ec60b5f623d87042903
[INFO] running `Command { std: "docker" "start" "-a" "28f87fafe8540c48e74fe3b8c1c7f96f0b95909f4ad90ec60b5f623d87042903", 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 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cauldron-1bf7af6af7dac9f3
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test flac::decoder::test_predict_lpc_low_order ... ok
[INFO] [stdout] test utils::test_narrow_to_i24 ... ok
[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_i16 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cauldron
[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:     0x55b06caf2ca5 - backtrace::backtrace::libunwind::trace::h5e2646fa3eddf2ea
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stdout]    1:     0x55b06caf2ca5 - backtrace::backtrace::trace_unsynchronized::hb95dd7f77ce47877
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55b06caf2ca5 - std::sys_common::backtrace::_print_fmt::h5e71b67af43fd70d
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stdout]    3:     0x55b06caf2ca5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdb4a83d2b61107e5
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stdout]    4:     0x55b06cb0fd1c - core::fmt::write::ha20e7262fa3e8a7a
[INFO] [stdout]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stdout]    5:     0x55b06caf1362 - std::io::Write::write_fmt::h1aebfe8a5a79e36d
[INFO] [stdout]                                at src/libstd/io/mod.rs:1537
[INFO] [stdout]    6:     0x55b06caf50e0 - std::sys_common::backtrace::_print::h9c07314cc66ba539
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stdout]    7:     0x55b06caf50e0 - std::sys_common::backtrace::print::hd1fd65f49a2d8544
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stdout]    8:     0x55b06caf50e0 - std::panicking::default_hook::{{closure}}::h222da46485ab36fc
[INFO] [stdout]                                at src/libstd/panicking.rs:198
[INFO] [stdout]    9:     0x55b06caf4e2c - std::panicking::default_hook::hc5868949d129ed00
[INFO] [stdout]                                at src/libstd/panicking.rs:217
[INFO] [stdout]   10:     0x55b06caf5723 - std::panicking::rust_panic_with_hook::h26a6ab8b0993c0c8
[INFO] [stdout]                                at src/libstd/panicking.rs:526
[INFO] [stdout]   11:     0x55b06caf531b - rust_begin_unwind
[INFO] [stdout]                                at src/libstd/panicking.rs:437
[INFO] [stdout]   12:     0x55b06caf528b - std::panicking::begin_panic_fmt::h2ff295231415d4a6
[INFO] [stdout]                                at src/libstd/panicking.rs:391
[INFO] [stdout]   13:     0x55b06cad456f - rust_out::main::h405f65324f7b53be
[INFO] [stdout]   14:     0x55b06cad4293 - std::rt::lang_start::{{closure}}::ha8395b9615e12984
[INFO] [stdout]   15:     0x55b06caf5af3 - std::rt::lang_start_internal::{{closure}}::h84a998219831fa70
[INFO] [stdout]                                at src/libstd/rt.rs:52
[INFO] [stdout]   16:     0x55b06caf5af3 - std::panicking::try::do_call::he8e1d689a3e26def
[INFO] [stdout]                                at src/libstd/panicking.rs:348
[INFO] [stdout]   17:     0x55b06caf5af3 - std::panicking::try::h264b6eebc2fa7bbf
[INFO] [stdout]                                at src/libstd/panicking.rs:325
[INFO] [stdout]   18:     0x55b06caf5af3 - std::panic::catch_unwind::hbf28fafa723b2128
[INFO] [stdout]                                at src/libstd/panic.rs:394
[INFO] [stdout]   19:     0x55b06caf5af3 - std::rt::lang_start_internal::he959aa59bc3ec202
[INFO] [stdout]                                at src/libstd/rt.rs:51
[INFO] [stdout]   20:     0x55b06cad4278 - std::rt::lang_start::hf91fc87199e1c84e
[INFO] [stdout]   21:     0x55b06cad45bb - main
[INFO] [stdout]   22:     0x7f7d24e930b3 - __libc_start_main
[INFO] [stdout]   23:     0x55b06cad417e - _start
[INFO] [stdout]   24:                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" "28f87fafe8540c48e74fe3b8c1c7f96f0b95909f4ad90ec60b5f623d87042903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f87fafe8540c48e74fe3b8c1c7f96f0b95909f4ad90ec60b5f623d87042903", kill_on_drop: false }`
[INFO] [stdout] 28f87fafe8540c48e74fe3b8c1c7f96f0b95909f4ad90ec60b5f623d87042903