Dec 02 14:08:59.561 INFO testing thunk-0.3.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 14:08:59.561 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 02 14:09:00.027 INFO [stdout] 0370988e7e267f2cad4d63d4c81b265e98081de520962ea211504a05d357e27c
Dec 02 14:09:00.035 INFO running `"docker" "start" "-a" "0370988e7e267f2cad4d63d4c81b265e98081de520962ea211504a05d357e27c"`
Dec 02 14:09:01.826 INFO [stderr] usermod: no changes
Dec 02 14:09:01.903 INFO [stderr]    Compiling thunk v0.3.0 (/source)
Dec 02 14:09:02.699 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:09:02.699 INFO [stderr]   --> src/lib.rs:20:1
Dec 02 14:09:02.699 INFO [stderr]    |
Dec 02 14:09:02.699 INFO [stderr] 20 | #![feature(fnbox)]
Dec 02 14:09:02.699 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 02 14:09:02.699 INFO [stderr] 
Dec 02 14:09:02.699 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:09:02.699 INFO [stderr]   --> src/lib.rs:21:1
Dec 02 14:09:02.699 INFO [stderr]    |
Dec 02 14:09:02.699 INFO [stderr] 21 | #![feature(untagged_unions)]
Dec 02 14:09:02.699 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:09:02.699 INFO [stderr] 
Dec 02 14:09:02.699 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 14:09:02.699 INFO [stderr] 
Dec 02 14:09:02.699 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 14:09:02.699 INFO [stderr] error: Could not compile `thunk`.
Dec 02 14:09:02.699 INFO [stderr] 
Dec 02 14:09:02.699 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 14:09:02.700 INFO [stderr] su: No module specific data is present
Dec 02 14:09:03.676 INFO running `"docker" "inspect" "0370988e7e267f2cad4d63d4c81b265e98081de520962ea211504a05d357e27c"`
Dec 02 14:09:03.923 INFO running `"docker" "rm" "-f" "0370988e7e267f2cad4d63d4c81b265e98081de520962ea211504a05d357e27c"`
Dec 02 14:09:04.270 INFO [stdout] 0370988e7e267f2cad4d63d4c81b265e98081de520962ea211504a05d357e27c