Dec 03 05:44:41.871 INFO testing hotswap-runtime-0.2.0 against 1.30.1 for beta-1.31-5
Dec 03 05:44:41.872 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/1.30.1:/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 +1.30.1 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 05:44:42.087 INFO [stdout] 3136549ec339202fc52830967e1d49a183d81ed700ebd82310a6a87531c83659
Dec 03 05:44:42.091 INFO running `"docker" "start" "-a" "3136549ec339202fc52830967e1d49a183d81ed700ebd82310a6a87531c83659"`
Dec 03 05:44:42.774 INFO [stderr] usermod: no changes
Dec 03 05:44:42.835 INFO [stderr]    Compiling libloading v0.4.3
Dec 03 05:44:42.845 INFO [stderr]    Compiling parking_lot_core v0.2.14
Dec 03 05:44:44.029 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 05:44:44.029 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.2.14/src/lib.rs:41:60
Dec 03 05:44:44.029 INFO [stderr]    |
Dec 03 05:44:44.029 INFO [stderr] 41 | #![cfg_attr(all(feature = "nightly", target_os = "linux"), feature(integer_atomics))]
Dec 03 05:44:44.029 INFO [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 05:44:44.029 INFO [stderr] 
Dec 03 05:44:44.031 INFO [stderr] error: aborting due to previous error
Dec 03 05:44:44.031 INFO [stderr] 
Dec 03 05:44:44.031 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 05:44:44.038 INFO [stderr] error: Could not compile `parking_lot_core`.
Dec 03 05:44:44.038 INFO [stderr] 
Dec 03 05:44:44.038 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 05:44:44.039 INFO [stderr] su: No module specific data is present
Dec 03 05:44:44.794 INFO running `"docker" "inspect" "3136549ec339202fc52830967e1d49a183d81ed700ebd82310a6a87531c83659"`
Dec 03 05:44:44.977 INFO running `"docker" "rm" "-f" "3136549ec339202fc52830967e1d49a183d81ed700ebd82310a6a87531c83659"`
Dec 03 05:44:45.155 INFO [stdout] 3136549ec339202fc52830967e1d49a183d81ed700ebd82310a6a87531c83659