Dec 02 16:38:39.589 INFO testing slab_allocator-0.3.5 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 16:38:39.589 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 16:38:40.039 INFO [stdout] 2e0611754a303b64e884a518bde763967ebf7281aceac4fd65b7f0735cff0db2
Dec 02 16:38:40.041 INFO running `"docker" "start" "-a" "2e0611754a303b64e884a518bde763967ebf7281aceac4fd65b7f0735cff0db2"`
Dec 02 16:38:41.224 INFO [stderr] usermod: no changes
Dec 02 16:38:41.302 INFO [stderr]    Compiling spin v0.4.10
Dec 02 16:38:41.425 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 16:38:41.425 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.10/src/lib.rs:6:35
Dec 02 16:38:41.425 INFO [stderr]   |
Dec 02 16:38:41.425 INFO [stderr] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
Dec 02 16:38:41.425 INFO [stderr]   |                                   ^^^^^^^^^^^^^^^^^
Dec 02 16:38:41.425 INFO [stderr] 
Dec 02 16:38:41.426 INFO [stderr] error: aborting due to previous error
Dec 02 16:38:41.426 INFO [stderr] 
Dec 02 16:38:41.426 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 16:38:41.436 INFO [stderr] error: Could not compile `spin`.
Dec 02 16:38:41.436 INFO [stderr] 
Dec 02 16:38:41.436 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 16:38:41.447 INFO [stderr] su: No module specific data is present
Dec 02 16:38:42.511 INFO running `"docker" "inspect" "2e0611754a303b64e884a518bde763967ebf7281aceac4fd65b7f0735cff0db2"`
Dec 02 16:38:42.649 INFO running `"docker" "rm" "-f" "2e0611754a303b64e884a518bde763967ebf7281aceac4fd65b7f0735cff0db2"`
Dec 02 16:38:42.873 INFO [stdout] 2e0611754a303b64e884a518bde763967ebf7281aceac4fd65b7f0735cff0db2