Nov 09 17:44:44.470 INFO checking Techno-coder/signal_processing against try#dc13be39fae8d4c607889b27de374b52586485a3 for pr-55632
Nov 09 17:44:44.470 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55632/worker-3/try#dc13be39fae8d4c607889b27de374b52586485a3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55632/try#dc13be39fae8d4c607889b27de374b52586485a3:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +dc13be39fae8d4c607889b27de374b52586485a3-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 09 17:44:44.848 INFO blam! d866876650160aaa7d9cdf27d5c29d8aaa206d9d5fbc05a1dd34f126ec69c782
Nov 09 17:44:44.853 INFO running `"docker" "start" "-a" "d866876650160aaa7d9cdf27d5c29d8aaa206d9d5fbc05a1dd34f126ec69c782"`
Nov 09 17:44:45.783 INFO kablam! usermod: no changes
Nov 09 17:44:45.927 INFO kablam!     Checking rustfft v2.1.0
Nov 09 17:44:47.151 INFO kablam!     Checking signal_processing v0.1.0 (/source)
Nov 09 17:44:49.131 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #55599)
Nov 09 17:44:49.131 INFO kablam!   --> src/convolution.rs:44:6
Nov 09 17:44:49.131 INFO kablam!    |
Nov 09 17:44:49.131 INFO kablam! 44 |     use test::Bencher;
Nov 09 17:44:49.131 INFO kablam!    |         ^^^^
Nov 09 17:44:49.131 INFO kablam!    |
Nov 09 17:44:49.131 INFO kablam!    = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 09 17:44:49.131 INFO kablam! 
Nov 09 17:44:49.131 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #55599)
Nov 09 17:44:49.131 INFO kablam!    --> src/short_time_fourier.rs:121:6
Nov 09 17:44:49.131 INFO kablam!     |
Nov 09 17:44:49.131 INFO kablam! 121 |     use test::Bencher;
Nov 09 17:44:49.131 INFO kablam!     |         ^^^^
Nov 09 17:44:49.131 INFO kablam!     |
Nov 09 17:44:49.131 INFO kablam!     = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 09 17:44:49.131 INFO kablam! 
Nov 09 17:44:49.131 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #55599)
Nov 09 17:44:49.131 INFO kablam!    --> src/phase_vocoder.rs:168:6
Nov 09 17:44:49.131 INFO kablam!     |
Nov 09 17:44:49.131 INFO kablam! 168 |     use test::Bencher;
Nov 09 17:44:49.131 INFO kablam!     |         ^^^^
Nov 09 17:44:49.131 INFO kablam!     |
Nov 09 17:44:49.131 INFO kablam!     = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 09 17:44:49.131 INFO kablam! 
Nov 09 17:44:49.131 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #55599)
Nov 09 17:44:49.131 INFO kablam!   --> src/fast_fourier.rs:45:6
Nov 09 17:44:49.131 INFO kablam!    |
Nov 09 17:44:49.131 INFO kablam! 45 |     use test::Bencher;
Nov 09 17:44:49.131 INFO kablam!    |         ^^^^
Nov 09 17:44:49.131 INFO kablam!    |
Nov 09 17:44:49.131 INFO kablam!    = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 09 17:44:49.131 INFO kablam! 
Nov 09 17:44:49.795 INFO kablam! error: aborting due to 4 previous errors
Nov 09 17:44:49.795 INFO kablam! 
Nov 09 17:44:49.795 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 09 17:44:49.815 INFO kablam! error: Could not compile `signal_processing`.
Nov 09 17:44:49.815 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 09 17:44:49.942 INFO kablam! error: build failed
Nov 09 17:44:49.947 INFO kablam! su: No module specific data is present
Nov 09 17:44:51.320 INFO running `"docker" "rm" "-f" "d866876650160aaa7d9cdf27d5c29d8aaa206d9d5fbc05a1dd34f126ec69c782"`
Nov 09 17:44:51.643 INFO blam! d866876650160aaa7d9cdf27d5c29d8aaa206d9d5fbc05a1dd34f126ec69c782