[INFO] fetching crate cauldron 0.0.3...
[INFO] checking cauldron-0.0.3 against beta for pr-78714
[INFO] extracting crate cauldron 0.0.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cauldron 0.0.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-5/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" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4a9786ad517365ffabc50a0bbf15f99b0b4c052c5d7a245ba82ccb7d0f44997
[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" "b4a9786ad517365ffabc50a0bbf15f99b0b4c052c5d7a245ba82ccb7d0f44997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4a9786ad517365ffabc50a0bbf15f99b0b4c052c5d7a245ba82ccb7d0f44997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a9786ad517365ffabc50a0bbf15f99b0b4c052c5d7a245ba82ccb7d0f44997", kill_on_drop: false }`
[INFO] [stdout] b4a9786ad517365ffabc50a0bbf15f99b0b4c052c5d7a245ba82ccb7d0f44997
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6afa1c36f79ef2d7f39a27d1c2429ae0a6ff0eacf8a759b78fad5b9badc12930
[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" "6afa1c36f79ef2d7f39a27d1c2429ae0a6ff0eacf8a759b78fad5b9badc12930", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.113
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking cauldron v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[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] [stderr]     Checking csv-core v0.1.10
[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 quote v1.0.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking rayon v1.3.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking criterion v0.3.3
[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 1m 06s
[INFO] running `Command { std: "docker" "inspect" "6afa1c36f79ef2d7f39a27d1c2429ae0a6ff0eacf8a759b78fad5b9badc12930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6afa1c36f79ef2d7f39a27d1c2429ae0a6ff0eacf8a759b78fad5b9badc12930", kill_on_drop: false }`
[INFO] [stdout] 6afa1c36f79ef2d7f39a27d1c2429ae0a6ff0eacf8a759b78fad5b9badc12930