Dec 02 17:46:49.545 INFO testing scrapmetal-0.1.0 against 1.30.1 for beta-1.31-5
Dec 02 17:46:49.545 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 17:46:49.984 INFO [stdout] cfe8c6fe2a0ab3834079223fc60a60dd60afc1fa57c9af7e5f4b6ddf3e51d7f1
Dec 02 17:46:49.986 INFO running `"docker" "start" "-a" "cfe8c6fe2a0ab3834079223fc60a60dd60afc1fa57c9af7e5f4b6ddf3e51d7f1"`
Dec 02 17:46:50.975 INFO [stderr] usermod: no changes
Dec 02 17:46:51.023 INFO [stderr]    Compiling scrapmetal v0.1.0 (/source)
Dec 02 17:46:51.657 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 17:46:51.657 INFO [stderr]  --> src/lib.rs:7:1
Dec 02 17:46:51.657 INFO [stderr]   |
Dec 02 17:46:51.657 INFO [stderr] 7 | #![feature(specialization)]
Dec 02 17:46:51.657 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 17:46:51.657 INFO [stderr] 
Dec 02 17:46:51.659 INFO [stderr] error: aborting due to previous error
Dec 02 17:46:51.660 INFO [stderr] 
Dec 02 17:46:51.660 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 17:46:51.665 INFO [stderr] error: Could not compile `scrapmetal`.
Dec 02 17:46:51.666 INFO [stderr] 
Dec 02 17:46:51.666 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 17:46:51.667 INFO [stderr] su: No module specific data is present
Dec 02 17:46:52.546 INFO running `"docker" "inspect" "cfe8c6fe2a0ab3834079223fc60a60dd60afc1fa57c9af7e5f4b6ddf3e51d7f1"`
Dec 02 17:46:52.825 INFO running `"docker" "rm" "-f" "cfe8c6fe2a0ab3834079223fc60a60dd60afc1fa57c9af7e5f4b6ddf3e51d7f1"`
Dec 02 17:46:53.119 INFO [stdout] cfe8c6fe2a0ab3834079223fc60a60dd60afc1fa57c9af7e5f4b6ddf3e51d7f1