Nov 02 05:39:00.533 INFO testing scrapmetal-0.1.0 against 1.30.0 for beta-1.31-1
Nov 02 05:39:00.534 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-1/worker-4/1.30.0:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 05:39:00.923 INFO blam! 520de6680d835b8244166e9726ee440d7894320d1164f04608a22e4eb7bef1f0
Nov 02 05:39:00.924 INFO running `"docker" "start" "-a" "520de6680d835b8244166e9726ee440d7894320d1164f04608a22e4eb7bef1f0"`
Nov 02 05:39:02.614 INFO kablam! usermod: no changes
Nov 02 05:39:02.684 INFO kablam!    Compiling scrapmetal v0.1.0 (/source)
Nov 02 05:39:03.419 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Nov 02 05:39:03.420 INFO kablam!  --> src/lib.rs:7:1
Nov 02 05:39:03.420 INFO kablam!   |
Nov 02 05:39:03.421 INFO kablam! 7 | #![feature(specialization)]
Nov 02 05:39:03.421 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 05:39:03.421 INFO kablam! 
Nov 02 05:39:03.421 INFO kablam! error: aborting due to previous error
Nov 02 05:39:03.422 INFO kablam! 
Nov 02 05:39:03.422 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 02 05:39:03.427 INFO kablam! error: Could not compile `scrapmetal`.
Nov 02 05:39:03.427 INFO kablam! 
Nov 02 05:39:03.427 INFO kablam! To learn more, run the command again with --verbose.
Nov 02 05:39:03.428 INFO kablam! su: No module specific data is present
Nov 02 05:39:04.264 INFO running `"docker" "rm" "-f" "520de6680d835b8244166e9726ee440d7894320d1164f04608a22e4eb7bef1f0"`
Nov 02 05:39:04.557 INFO blam! 520de6680d835b8244166e9726ee440d7894320d1164f04608a22e4eb7bef1f0
