Dec 02 22:21:39.559 INFO testing png2aa-0.1.2 against 1.30.1 for beta-1.31-5
Dec 02 22:21:39.559 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 02 22:21:39.841 INFO [stdout] e0eb9fcbbd309b80944c5b32e6f92ba71733e4c37349f57fa3e37c4183886023
Dec 02 22:21:39.845 INFO running `"docker" "start" "-a" "e0eb9fcbbd309b80944c5b32e6f92ba71733e4c37349f57fa3e37c4183886023"`
Dec 02 22:21:40.387 INFO [stderr] usermod: no changes
Dec 02 22:21:40.496 INFO [stderr]    Compiling string-error v0.1.0
Dec 02 22:21:41.211 INFO [stderr]    Compiling png2aa v0.1.2 (/source)
Dec 02 22:21:44.271 INFO [stderr] warning: unused `#[macro_use]` import
Dec 02 22:21:44.271 INFO [stderr]  --> src/lib.rs:2:1
Dec 02 22:21:44.271 INFO [stderr]   |
Dec 02 22:21:44.271 INFO [stderr] 2 | #[macro_use] extern crate ndarray;
Dec 02 22:21:44.271 INFO [stderr]   | ^^^^^^^^^^^^
Dec 02 22:21:44.271 INFO [stderr]   |
Dec 02 22:21:44.271 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 22:21:44.271 INFO [stderr] 
Dec 02 22:21:48.728 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 22:21:48.728 INFO [stderr]  --> src/cli.rs:1:1
Dec 02 22:21:48.731 INFO [stderr]   |
Dec 02 22:21:48.731 INFO [stderr] 1 | #![feature(slice_patterns)]
Dec 02 22:21:48.731 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 22:21:48.731 INFO [stderr] 
Dec 02 22:21:48.732 INFO [stderr] error: aborting due to previous error
Dec 02 22:21:48.732 INFO [stderr] 
Dec 02 22:21:48.732 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 22:21:48.747 INFO [stderr] error: Could not compile `png2aa`.
Dec 02 22:21:48.747 INFO [stderr] 
Dec 02 22:21:48.747 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 22:21:48.751 INFO [stderr] su: No module specific data is present
Dec 02 22:21:49.231 INFO running `"docker" "inspect" "e0eb9fcbbd309b80944c5b32e6f92ba71733e4c37349f57fa3e37c4183886023"`
Dec 02 22:21:49.465 INFO running `"docker" "rm" "-f" "e0eb9fcbbd309b80944c5b32e6f92ba71733e4c37349f57fa3e37c4183886023"`
Dec 02 22:21:49.690 INFO [stdout] e0eb9fcbbd309b80944c5b32e6f92ba71733e4c37349f57fa3e37c4183886023