Dec 03 16:04:56.657 INFO testing circle_boundary-0.1.16 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 16:04:56.657 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 16:04:57.191 INFO [stdout] f38e7aea40af1c63dbca13dea0fbf9584f361e5e08bc53d63dcc195385da74b6
Dec 03 16:04:57.193 INFO running `"docker" "start" "-a" "f38e7aea40af1c63dbca13dea0fbf9584f361e5e08bc53d63dcc195385da74b6"`
Dec 03 16:04:58.471 INFO [stderr] usermod: no changes
Dec 03 16:04:58.580 INFO [stderr]    Compiling wasm-bindgen v0.2.28
Dec 03 16:05:01.975 INFO [stderr]    Compiling circle_boundary v0.1.16 (/source)
Dec 03 16:05:03.615 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 16:05:03.615 INFO [stderr]  --> src/lib.rs:1:1
Dec 03 16:05:03.615 INFO [stderr]   |
Dec 03 16:05:03.615 INFO [stderr] 1 | #![feature(use_extern_macros)]
Dec 03 16:05:03.615 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 16:05:03.615 INFO [stderr] 
Dec 03 16:05:03.615 INFO [stderr] error: aborting due to previous error
Dec 03 16:05:03.615 INFO [stderr] 
Dec 03 16:05:03.615 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 16:05:03.625 INFO [stderr] error: Could not compile `circle_boundary`.
Dec 03 16:05:03.625 INFO [stderr] 
Dec 03 16:05:03.625 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 16:05:03.627 INFO [stderr] su: No module specific data is present
Dec 03 16:05:04.778 INFO running `"docker" "inspect" "f38e7aea40af1c63dbca13dea0fbf9584f361e5e08bc53d63dcc195385da74b6"`
Dec 03 16:05:05.133 INFO running `"docker" "rm" "-f" "f38e7aea40af1c63dbca13dea0fbf9584f361e5e08bc53d63dcc195385da74b6"`
Dec 03 16:05:05.447 INFO [stdout] f38e7aea40af1c63dbca13dea0fbf9584f361e5e08bc53d63dcc195385da74b6