Dec 03 02:20:11.389 INFO testing macro-machines-0.8.6 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 02:20:11.389 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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"`
Dec 03 02:20:11.580 INFO [stdout] 0b5e633b008d084181ec5df3d818dd7bbe5ae4c17afe8acabd04c5fd69951e18
Dec 03 02:20:11.584 INFO running `"docker" "start" "-a" "0b5e633b008d084181ec5df3d818dd7bbe5ae4c17afe8acabd04c5fd69951e18"`
Dec 03 02:20:12.174 INFO [stderr] usermod: no changes
Dec 03 02:20:12.235 INFO [stderr]    Compiling marksman_escape v0.1.2
Dec 03 02:20:22.467 INFO [stderr]    Compiling macro-machines v0.8.6 (/source)
Dec 03 02:20:23.123 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 02:20:23.123 INFO [stderr]   --> src/lib.rs:68:1
Dec 03 02:20:23.123 INFO [stderr]    |
Dec 03 02:20:23.123 INFO [stderr] 68 | #![feature(use_extern_macros)]
Dec 03 02:20:23.123 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 02:20:23.123 INFO [stderr] 
Dec 03 02:20:23.123 INFO [stderr] error: aborting due to previous error
Dec 03 02:20:23.123 INFO [stderr] 
Dec 03 02:20:23.123 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 02:20:23.123 INFO [stderr] error: Could not compile `macro-machines`.
Dec 03 02:20:23.123 INFO [stderr] 
Dec 03 02:20:23.123 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 02:20:23.127 INFO [stderr] su: No module specific data is present
Dec 03 02:20:23.900 INFO running `"docker" "inspect" "0b5e633b008d084181ec5df3d818dd7bbe5ae4c17afe8acabd04c5fd69951e18"`
Dec 03 02:20:24.255 INFO running `"docker" "rm" "-f" "0b5e633b008d084181ec5df3d818dd7bbe5ae4c17afe8acabd04c5fd69951e18"`
Dec 03 02:20:24.486 INFO [stdout] 0b5e633b008d084181ec5df3d818dd7bbe5ae4c17afe8acabd04c5fd69951e18