Dec 01 16:42:53.301 INFO testing gf4t47/rust_os against 1.30.1 for beta-1.31-5
Dec 01 16:42:53.301 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 01 16:42:53.751 INFO [stdout] 3d60ce9f13dd053a54c39d58b8a677ccca76a4dfc66170d918b20e112c1a1358
Dec 01 16:42:53.759 INFO running `"docker" "start" "-a" "3d60ce9f13dd053a54c39d58b8a677ccca76a4dfc66170d918b20e112c1a1358"`
Dec 01 16:42:54.699 INFO [stderr] usermod: no changes
Dec 01 16:42:54.791 INFO [stderr]    Compiling usize_conversions v0.2.0
Dec 01 16:42:54.795 INFO [stderr]    Compiling cpuio v0.2.0
Dec 01 16:42:54.795 INFO [stderr]    Compiling spin v0.4.9
Dec 01 16:42:54.795 INFO [stderr]    Compiling volatile v0.2.5
Dec 01 16:42:54.795 INFO [stderr]    Compiling lazy_static v1.1.0
Dec 01 16:42:54.795 INFO [stderr]    Compiling bootloader_precompiled v0.2.0
Dec 01 16:42:54.967 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 01 16:42:54.967 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.9/src/lib.rs:6:35
Dec 01 16:42:54.967 INFO [stderr]   |
Dec 01 16:42:54.967 INFO [stderr] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
Dec 01 16:42:54.967 INFO [stderr]   |                                   ^^^^^^^^^^^^^^^^^^
Dec 01 16:42:54.967 INFO [stderr] 
Dec 01 16:42:54.967 INFO [stderr] error: aborting due to previous error
Dec 01 16:42:54.967 INFO [stderr] 
Dec 01 16:42:54.967 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 01 16:42:54.973 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 01 16:42:54.973 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cpuio-0.2.0/src/lib.rs:4:1
Dec 01 16:42:54.973 INFO [stderr]   |
Dec 01 16:42:54.973 INFO [stderr] 4 | #![feature(asm, const_fn, no_std)]
Dec 01 16:42:54.973 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:42:54.973 INFO [stderr] 
Dec 01 16:42:54.974 INFO [stderr] error: aborting due to previous error
Dec 01 16:42:54.974 INFO [stderr] 
Dec 01 16:42:54.974 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 01 16:42:54.974 INFO [stderr] error: Could not compile `spin`.
Dec 01 16:42:54.974 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 01 16:42:54.978 INFO [stderr] error: Could not compile `cpuio`.
Dec 01 16:42:54.978 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 01 16:42:54.995 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 01 16:42:54.995 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/usize_conversions-0.2.0/src/lib.rs:6:1
Dec 01 16:42:54.995 INFO [stderr]   |
Dec 01 16:42:54.995 INFO [stderr] 6 | #![feature(i128_type)]
Dec 01 16:42:54.995 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:42:54.995 INFO [stderr] 
Dec 01 16:42:54.995 INFO [stderr] error: aborting due to previous error
Dec 01 16:42:54.995 INFO [stderr] 
Dec 01 16:42:54.995 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 01 16:42:54.997 INFO [stderr] error: Could not compile `usize_conversions`.
Dec 01 16:42:54.997 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 01 16:42:55.993 INFO [stderr] error: build failed
Dec 01 16:42:55.999 INFO [stderr] su: No module specific data is present
Dec 01 16:42:56.467 INFO running `"docker" "inspect" "3d60ce9f13dd053a54c39d58b8a677ccca76a4dfc66170d918b20e112c1a1358"`
Dec 01 16:42:56.540 INFO running `"docker" "rm" "-f" "3d60ce9f13dd053a54c39d58b8a677ccca76a4dfc66170d918b20e112c1a1358"`
Dec 01 16:42:56.640 INFO [stdout] 3d60ce9f13dd053a54c39d58b8a677ccca76a4dfc66170d918b20e112c1a1358
