Dec 02 16:38:42.945 INFO testing slab_allocator-0.3.5 against 1.30.1 for beta-1.31-5
Dec 02 16:38:42.945 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 16:38:43.300 INFO [stdout] cfb21b13f2d6a0db2c1ca49ce1d328e516e05a81d988dd30952966a90290bb52
Dec 02 16:38:43.303 INFO running `"docker" "start" "-a" "cfb21b13f2d6a0db2c1ca49ce1d328e516e05a81d988dd30952966a90290bb52"`
Dec 02 16:38:43.951 INFO [stderr] usermod: no changes
Dec 02 16:38:43.983 INFO [stderr]    Compiling spin v0.4.10
Dec 02 16:38:44.078 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 16:38:44.079 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.10/src/lib.rs:6:35
Dec 02 16:38:44.079 INFO [stderr]   |
Dec 02 16:38:44.079 INFO [stderr] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
Dec 02 16:38:44.079 INFO [stderr]   |                                   ^^^^^^^^^^^^^^^^^^
Dec 02 16:38:44.079 INFO [stderr] 
Dec 02 16:38:44.080 INFO [stderr] error: aborting due to previous error
Dec 02 16:38:44.080 INFO [stderr] 
Dec 02 16:38:44.080 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 16:38:44.085 INFO [stderr] error: Could not compile `spin`.
Dec 02 16:38:44.085 INFO [stderr] 
Dec 02 16:38:44.085 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 16:38:44.086 INFO [stderr] su: No module specific data is present
Dec 02 16:38:44.615 INFO running `"docker" "inspect" "cfb21b13f2d6a0db2c1ca49ce1d328e516e05a81d988dd30952966a90290bb52"`
Dec 02 16:38:44.871 INFO running `"docker" "rm" "-f" "cfb21b13f2d6a0db2c1ca49ce1d328e516e05a81d988dd30952966a90290bb52"`
Dec 02 16:38:45.227 INFO [stdout] cfb21b13f2d6a0db2c1ca49ce1d328e516e05a81d988dd30952966a90290bb52