Nov 01 06:10:24.784 INFO testing k0nserv/rust-isqrt against 1.30.0 for beta-1.31-1
Nov 01 06:10:24.784 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 01 06:10:25.239 INFO blam! 0f85ebdee258d41df29511ec506145aa86c5af93eb7b5baf38f990d615df5c68
Nov 01 06:10:25.243 INFO running `"docker" "start" "-a" "0f85ebdee258d41df29511ec506145aa86c5af93eb7b5baf38f990d615df5c68"`
Nov 01 06:10:26.214 INFO kablam! usermod: no changes
Nov 01 06:10:26.278 INFO kablam!    Compiling isqrt v0.1.0 (/source)
Nov 01 06:10:26.664 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Nov 01 06:10:26.664 INFO kablam!  --> src/lib.rs:1:1
Nov 01 06:10:26.664 INFO kablam!   |
Nov 01 06:10:26.664 INFO kablam! 1 | #![feature(test)]
Nov 01 06:10:26.664 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Nov 01 06:10:26.664 INFO kablam! 
Nov 01 06:10:26.664 INFO kablam! error: aborting due to previous error
Nov 01 06:10:26.664 INFO kablam! 
Nov 01 06:10:26.664 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 01 06:10:26.667 INFO kablam! error: Could not compile `isqrt`.
Nov 01 06:10:26.667 INFO kablam! 
Nov 01 06:10:26.668 INFO kablam! To learn more, run the command again with --verbose.
Nov 01 06:10:26.669 INFO kablam! su: No module specific data is present
Nov 01 06:10:27.201 INFO running `"docker" "rm" "-f" "0f85ebdee258d41df29511ec506145aa86c5af93eb7b5baf38f990d615df5c68"`
Nov 01 06:10:27.451 INFO blam! 0f85ebdee258d41df29511ec506145aa86c5af93eb7b5baf38f990d615df5c68
