Dec 03 03:44:08.436 INFO testing kg-tree-0.1.1 against 1.30.1 for beta-1.31-5
Dec 03 03:44:08.436 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 03:44:08.823 INFO [stdout] ecaf2d6779a84a3c93a35d063a6599261d5bdb666f67a269cbc30df4b6cc79a0
Dec 03 03:44:08.829 INFO running `"docker" "start" "-a" "ecaf2d6779a84a3c93a35d063a6599261d5bdb666f67a269cbc30df4b6cc79a0"`
Dec 03 03:44:10.338 INFO [stderr] usermod: no changes
Dec 03 03:44:10.567 INFO [stderr]    Compiling heapsize v0.4.2
Dec 03 03:44:10.591 INFO [stderr]    Compiling lock_api v0.1.5
Dec 03 03:44:10.595 INFO [stderr]    Compiling memchr v2.1.1
Dec 03 03:44:10.595 INFO [stderr]    Compiling serde_yaml v0.8.8
Dec 03 03:44:10.600 INFO [stderr]    Compiling syn v0.15.22
Dec 03 03:44:10.609 INFO [stderr]    Compiling heapsize_derive v0.1.4
Dec 03 03:44:10.609 INFO [stderr]    Compiling parking_lot_core v0.3.1
Dec 03 03:44:11.807 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 03:44:11.807 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.5/src/lib.rs:88:34
Dec 03 03:44:11.807 INFO [stderr]    |
Dec 03 03:44:11.807 INFO [stderr] 88 | #![cfg_attr(feature = "nightly", feature(const_fn))]
Dec 03 03:44:11.807 INFO [stderr]    |                                  ^^^^^^^^^^^^^^^^^^
Dec 03 03:44:11.807 INFO [stderr] 
Dec 03 03:44:11.810 INFO [stderr] error: aborting due to previous error
Dec 03 03:44:11.810 INFO [stderr] 
Dec 03 03:44:11.810 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 03:44:11.823 INFO [stderr] error: Could not compile `lock_api`.
Dec 03 03:44:11.823 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 03 03:44:16.647 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 03:44:16.647 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/parking_lot_core-0.3.1/src/lib.rs:43:5
Dec 03 03:44:16.647 INFO [stderr]    |
Dec 03 03:44:16.648 INFO [stderr] 43 | /     feature(integer_atomics)
Dec 03 03:44:16.655 INFO [stderr] 44 | | )]
Dec 03 03:44:16.655 INFO [stderr]    | |_^
Dec 03 03:44:16.655 INFO [stderr] 
Dec 03 03:44:16.663 INFO [stderr] error: aborting due to previous error
Dec 03 03:44:16.663 INFO [stderr] 
Dec 03 03:44:16.663 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 03:44:16.688 INFO [stderr] error: Could not compile `parking_lot_core`.
Dec 03 03:44:16.688 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 03 03:44:43.763 INFO [stderr] error: build failed
Dec 03 03:44:43.764 INFO [stderr] su: No module specific data is present
Dec 03 03:44:44.455 INFO running `"docker" "inspect" "ecaf2d6779a84a3c93a35d063a6599261d5bdb666f67a269cbc30df4b6cc79a0"`
Dec 03 03:44:44.685 INFO running `"docker" "rm" "-f" "ecaf2d6779a84a3c93a35d063a6599261d5bdb666f67a269cbc30df4b6cc79a0"`
Dec 03 03:44:44.959 INFO [stdout] ecaf2d6779a84a3c93a35d063a6599261d5bdb666f67a269cbc30df4b6cc79a0