Dec 02 20:09:18.771 INFO testing rlibcex-0.1.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 20:09:18.771 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 02 20:09:19.188 INFO [stdout] eabdcff02ae5e6902415ce0b40bb1b43e24d8185e2cc21b03483226b2e1e2f74
Dec 02 20:09:19.190 INFO running `"docker" "start" "-a" "eabdcff02ae5e6902415ce0b40bb1b43e24d8185e2cc21b03483226b2e1e2f74"`
Dec 02 20:09:21.203 INFO [stderr] usermod: no changes
Dec 02 20:09:21.275 INFO [stderr]    Compiling rlibcex v0.1.2 (/source)
Dec 02 20:09:21.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
Dec 02 20:09:21.562 INFO [stderr] su: No module specific data is present
Dec 02 20:09:22.291 INFO running `"docker" "inspect" "eabdcff02ae5e6902415ce0b40bb1b43e24d8185e2cc21b03483226b2e1e2f74"`
Dec 02 20:09:22.633 INFO running `"docker" "rm" "-f" "eabdcff02ae5e6902415ce0b40bb1b43e24d8185e2cc21b03483226b2e1e2f74"`
Dec 02 20:09:22.902 INFO [stdout] eabdcff02ae5e6902415ce0b40bb1b43e24d8185e2cc21b03483226b2e1e2f74
Dec 02 20:09:22.905 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 test --frozen --no-run" "-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 20:09:23.435 INFO [stdout] 59db86f8bb9996fa629da629a5021d79f278d26ada221abb7e4fa8be64b1c795
Dec 02 20:09:23.443 INFO running `"docker" "start" "-a" "59db86f8bb9996fa629da629a5021d79f278d26ada221abb7e4fa8be64b1c795"`
Dec 02 20:09:24.267 INFO [stderr] usermod: no changes
Dec 02 20:09:24.291 INFO [stderr]    Compiling rlibcex v0.1.2 (/source)
Dec 02 20:09:24.947 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 20:09:24.947 INFO [stderr]  --> src/lib.rs:3:19
Dec 02 20:09:24.947 INFO [stderr]   |
Dec 02 20:09:24.947 INFO [stderr] 3 | #![cfg_attr(test, feature(test))]
Dec 02 20:09:24.947 INFO [stderr]   |                   ^^^^^^^^^^^^^
Dec 02 20:09:24.947 INFO [stderr] 
Dec 02 20:09:24.947 INFO [stderr] error: aborting due to previous error
Dec 02 20:09:24.947 INFO [stderr] 
Dec 02 20:09:24.947 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 20:09:24.952 INFO [stderr] error: Could not compile `rlibcex`.
Dec 02 20:09:24.952 INFO [stderr] 
Dec 02 20:09:24.952 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 20:09:24.952 INFO [stderr] su: No module specific data is present
Dec 02 20:09:25.486 INFO running `"docker" "inspect" "59db86f8bb9996fa629da629a5021d79f278d26ada221abb7e4fa8be64b1c795"`
Dec 02 20:09:25.653 INFO running `"docker" "rm" "-f" "59db86f8bb9996fa629da629a5021d79f278d26ada221abb7e4fa8be64b1c795"`
Dec 02 20:09:25.814 INFO [stdout] 59db86f8bb9996fa629da629a5021d79f278d26ada221abb7e4fa8be64b1c795