Dec 03 15:32:00.570 INFO testing compact-0.2.13 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 15:32:00.570 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 15:32:01.009 INFO [stdout] be49f063bc9292f80631f25985f56fcd947077630de1429081ffdf1ddcccb467
Dec 03 15:32:01.011 INFO running `"docker" "start" "-a" "be49f063bc9292f80631f25985f56fcd947077630de1429081ffdf1ddcccb467"`
Dec 03 15:32:02.355 INFO [stderr] usermod: no changes
Dec 03 15:32:02.447 INFO [stderr]    Compiling simple_allocator_trait v0.1.0
Dec 03 15:32:03.467 INFO [stderr]    Compiling compact v0.2.13 (/source)
Dec 03 15:32:04.939 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 15:32:04.939 INFO [stderr]   --> src/lib.rs:17:1
Dec 03 15:32:04.939 INFO [stderr]    |
Dec 03 15:32:04.939 INFO [stderr] 17 | #![feature(specialization)]
Dec 03 15:32:04.939 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 15:32:04.939 INFO [stderr] 
Dec 03 15:32:04.947 INFO [stderr] error: aborting due to previous error
Dec 03 15:32:04.947 INFO [stderr] 
Dec 03 15:32:04.947 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 15:32:04.949 INFO [stderr] error: Could not compile `compact`.
Dec 03 15:32:04.949 INFO [stderr] 
Dec 03 15:32:04.949 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 15:32:04.950 INFO [stderr] su: No module specific data is present
Dec 03 15:32:05.961 INFO running `"docker" "inspect" "be49f063bc9292f80631f25985f56fcd947077630de1429081ffdf1ddcccb467"`
Dec 03 15:32:06.296 INFO running `"docker" "rm" "-f" "be49f063bc9292f80631f25985f56fcd947077630de1429081ffdf1ddcccb467"`
Dec 03 15:32:06.581 INFO [stdout] be49f063bc9292f80631f25985f56fcd947077630de1429081ffdf1ddcccb467