Nov 02 04:58:50.456 INFO testing shell_helper-0.2.12 against 1.30.0 for beta-1.31-1
Nov 02 04:58:50.456 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-7/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 04:58:50.755 INFO blam! 673c60eccc40c6544c9730b42c47f946a173b659fc4226540afc7f6042a185ef
Nov 02 04:58:50.758 INFO running `"docker" "start" "-a" "673c60eccc40c6544c9730b42c47f946a173b659fc4226540afc7f6042a185ef"`
Nov 02 04:58:51.642 INFO kablam! usermod: no changes
Nov 02 04:58:52.095 INFO kablam!    Compiling shell_helper v0.2.12 (/source)
Nov 02 04:58:59.340 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Nov 02 04:58:59.340 INFO kablam!  --> src/lib.rs:3:1
Nov 02 04:58:59.340 INFO kablam!   |
Nov 02 04:58:59.340 INFO kablam! 3 | #![feature(range_contains)]
Nov 02 04:58:59.340 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 04:58:59.340 INFO kablam! 
Nov 02 04:58:59.340 INFO kablam! error: aborting due to previous error
Nov 02 04:58:59.340 INFO kablam! 
Nov 02 04:58:59.340 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 02 04:58:59.359 INFO kablam! error: Could not compile `shell_helper`.
Nov 02 04:58:59.359 INFO kablam! 
Nov 02 04:58:59.359 INFO kablam! To learn more, run the command again with --verbose.
Nov 02 04:58:59.359 INFO kablam! su: No module specific data is present
Nov 02 04:58:59.895 INFO running `"docker" "rm" "-f" "673c60eccc40c6544c9730b42c47f946a173b659fc4226540afc7f6042a185ef"`
Nov 02 04:59:00.073 INFO blam! 673c60eccc40c6544c9730b42c47f946a173b659fc4226540afc7f6042a185ef
