Nov 02 03:13:36.219 INFO testing syscall-0.2.1 against 1.30.0 for beta-1.31-1
Nov 02 03:13:36.219 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 03:13:36.399 INFO blam! 4be8cd8ef79bf6830dab075b3c3781daf0138b12ba3c3684fbe952a67c55d4f3
Nov 02 03:13:36.408 INFO running `"docker" "start" "-a" "4be8cd8ef79bf6830dab075b3c3781daf0138b12ba3c3684fbe952a67c55d4f3"`
Nov 02 03:13:36.960 INFO kablam! usermod: no changes
Nov 02 03:13:37.005 INFO kablam!    Compiling syscall v0.2.1 (/source)
Nov 02 03:13:37.056 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Nov 02 03:13:37.056 INFO kablam!   --> src/lib.rs:15:1
Nov 02 03:13:37.056 INFO kablam!    |
Nov 02 03:13:37.056 INFO kablam! 15 | #![feature(asm)]
Nov 02 03:13:37.056 INFO kablam!    | ^^^^^^^^^^^^^^^^
Nov 02 03:13:37.056 INFO kablam! 
Nov 02 03:13:37.060 INFO kablam! error: aborting due to previous error
Nov 02 03:13:37.060 INFO kablam! 
Nov 02 03:13:37.060 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Nov 02 03:13:37.061 INFO kablam! error: Could not compile `syscall`.
Nov 02 03:13:37.061 INFO kablam! 
Nov 02 03:13:37.061 INFO kablam! To learn more, run the command again with --verbose.
Nov 02 03:13:37.061 INFO kablam! su: No module specific data is present
Nov 02 03:13:37.414 INFO running `"docker" "rm" "-f" "4be8cd8ef79bf6830dab075b3c3781daf0138b12ba3c3684fbe952a67c55d4f3"`
Nov 02 03:13:37.601 INFO blam! 4be8cd8ef79bf6830dab075b3c3781daf0138b12ba3c3684fbe952a67c55d4f3
