[INFO] updating cached repository whentze/piff
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/whentze/piff
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/whentze/piff" "work/ex/beta-1.38-1/sources/1.37.0/gh/whentze/piff"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/whentze/piff'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/whentze/piff" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whentze/piff"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whentze/piff'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b34f0dcce33f15255f5e45e903cd36172c2686a2
[INFO] sha for GitHub repo whentze/piff: b34f0dcce33f15255f5e45e903cd36172c2686a2
[INFO] validating manifest of whentze/piff on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of whentze/piff on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing whentze/piff
[INFO] finished frobbing whentze/piff
[INFO] frobbed toml for whentze/piff written to work/ex/beta-1.38-1/sources/1.37.0/gh/whentze/piff/Cargo.toml
[INFO] started frobbing whentze/piff
[INFO] finished frobbing whentze/piff
[INFO] frobbed toml for whentze/piff written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whentze/piff/Cargo.toml
[INFO] crate whentze/piff already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing whentze/piff against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/whentze/piff:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 78aa998ad30702ce9e85e3c1be06a1b1e9ead84abca90f1db4ec09ed4af3789a
[INFO] running `"docker" "start" "-a" "78aa998ad30702ce9e85e3c1be06a1b1e9ead84abca90f1db4ec09ed4af3789a"`
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling cpal v0.6.0
[INFO] [stderr]    Compiling piff v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(step_trait, integer_atomics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/definitions.rs:145:14
[INFO] [stderr]     |
[INFO] [stderr] 145 |             1...11 => Note {
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/definitions.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / lazy_static! {
[INFO] [stderr] 12 | |     pub static ref SAMPLE_HISTORY : Mutex<Vec<f32>> = {
[INFO] [stderr] 13 | |         Mutex::new(vec![0.0; HISTORY_LENGTH])
[INFO] [stderr] 14 | |     };
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `piff`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "78aa998ad30702ce9e85e3c1be06a1b1e9ead84abca90f1db4ec09ed4af3789a"`
[INFO] running `"docker" "rm" "-f" "78aa998ad30702ce9e85e3c1be06a1b1e9ead84abca90f1db4ec09ed4af3789a"`
[INFO] [stdout] 78aa998ad30702ce9e85e3c1be06a1b1e9ead84abca90f1db4ec09ed4af3789a