Nov 02 02:23:43.716 INFO testing tock-registers-0.2.0 against 1.30.0 for beta-1.31-1
Nov 02 02:23:43.716 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-6/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/beta-1.31-1/1.30.0:/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 +1.30.0 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 02 02:23:44.232 INFO blam! e7d110537cbd79d65c03c31494ffc5dd6bc5242f8497054b93a4f786a58f3d70
Nov 02 02:23:44.243 INFO running `"docker" "start" "-a" "e7d110537cbd79d65c03c31494ffc5dd6bc5242f8497054b93a4f786a58f3d70"`
Nov 02 02:23:45.607 INFO kablam! usermod: no changes
Nov 02 02:23:45.685 INFO kablam!    Compiling tock-registers v0.2.0 (/source)
Nov 02 02:23:45.773 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Nov 02 02:23:45.773 INFO kablam!  --> src/lib.rs:5:1
Nov 02 02:23:45.774 INFO kablam!   |
Nov 02 02:23:45.774 INFO kablam! 5 | #![feature(const_fn)]
Nov 02 02:23:45.774 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Nov 02 02:23:45.774 INFO kablam! 
Nov 02 02:23:45.775 INFO kablam! error: aborting due to previous error
Nov 02 02:23:45.775 INFO kablam! 
Nov 02 02:23:45.775 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 02 02:23:45.776 INFO kablam! error: Could not compile `tock-registers`.
Nov 02 02:23:45.776 INFO kablam! 
Nov 02 02:23:45.776 INFO kablam! To learn more, run the command again with --verbose.
Nov 02 02:23:45.785 INFO kablam! su: No module specific data is present
Nov 02 02:23:46.651 INFO running `"docker" "rm" "-f" "e7d110537cbd79d65c03c31494ffc5dd6bc5242f8497054b93a4f786a58f3d70"`
Nov 02 02:23:46.831 INFO blam! e7d110537cbd79d65c03c31494ffc5dd6bc5242f8497054b93a4f786a58f3d70
