Nov 07 02:40:10.825 INFO checking Techno-coder/signal_processing against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 02:40:10.826 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-7/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/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 +24e66c28980442a48d9458f1a4f9b76cc722dc8a-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 07 02:40:11.231 INFO blam! 9b63b7a0d0e92a8169cb21d0cf5fa64d5ff76acb7d241b500c8132ded6e4be6b
Nov 07 02:40:11.233 INFO running `"docker" "start" "-a" "9b63b7a0d0e92a8169cb21d0cf5fa64d5ff76acb7d241b500c8132ded6e4be6b"`
Nov 07 02:40:12.223 INFO kablam! usermod: no changes
Nov 07 02:40:12.372 INFO kablam!     Checking rustfft v2.1.0
Nov 07 02:40:13.856 INFO kablam!     Checking signal_processing v0.1.0 (/source)
Nov 07 02:40:15.940 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 07 02:40:15.940 INFO kablam!   --> src/convolution.rs:44:6
Nov 07 02:40:15.940 INFO kablam!    |
Nov 07 02:40:15.940 INFO kablam! 44 |     use test::Bencher;
Nov 07 02:40:15.940 INFO kablam!    |         ^^^^
Nov 07 02:40:15.940 INFO kablam!    |
Nov 07 02:40:15.940 INFO kablam!    = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 07 02:40:15.940 INFO kablam! 
Nov 07 02:40:15.940 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 07 02:40:15.940 INFO kablam!    --> src/short_time_fourier.rs:121:6
Nov 07 02:40:15.940 INFO kablam!     |
Nov 07 02:40:15.940 INFO kablam! 121 |     use test::Bencher;
Nov 07 02:40:15.940 INFO kablam!     |         ^^^^
Nov 07 02:40:15.940 INFO kablam!     |
Nov 07 02:40:15.940 INFO kablam!     = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 07 02:40:15.940 INFO kablam! 
Nov 07 02:40:15.941 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 07 02:40:15.941 INFO kablam!    --> src/phase_vocoder.rs:168:6
Nov 07 02:40:15.941 INFO kablam!     |
Nov 07 02:40:15.941 INFO kablam! 168 |     use test::Bencher;
Nov 07 02:40:15.941 INFO kablam!     |         ^^^^
Nov 07 02:40:15.941 INFO kablam!     |
Nov 07 02:40:15.941 INFO kablam!     = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 07 02:40:15.941 INFO kablam! 
Nov 07 02:40:15.941 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 07 02:40:15.941 INFO kablam!   --> src/fast_fourier.rs:45:6
Nov 07 02:40:15.941 INFO kablam!    |
Nov 07 02:40:15.941 INFO kablam! 45 |     use test::Bencher;
Nov 07 02:40:15.941 INFO kablam!    |         ^^^^
Nov 07 02:40:15.941 INFO kablam!    |
Nov 07 02:40:15.941 INFO kablam!    = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 07 02:40:15.941 INFO kablam! 
Nov 07 02:40:16.768 INFO kablam! error: aborting due to 4 previous errors
Nov 07 02:40:16.768 INFO kablam! 
Nov 07 02:40:16.768 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 07 02:40:16.776 INFO kablam! error: Could not compile `signal_processing`.
Nov 07 02:40:16.776 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 07 02:40:17.927 INFO kablam! error: build failed
Nov 07 02:40:17.929 INFO kablam! su: No module specific data is present
Nov 07 02:40:18.771 INFO running `"docker" "rm" "-f" "9b63b7a0d0e92a8169cb21d0cf5fa64d5ff76acb7d241b500c8132ded6e4be6b"`
Nov 07 02:40:19.102 INFO blam! 9b63b7a0d0e92a8169cb21d0cf5fa64d5ff76acb7d241b500c8132ded6e4be6b