Dec 02 14:50:51.001 INFO testing syscall-0.2.1 against 1.30.1 for beta-1.31-5
Dec 02 14:50:51.001 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 14:50:51.185 INFO [stdout] b82d765031eb0089b26850225b3973d339c39b04ffb2220e46066acfa92f1b7b
Dec 02 14:50:51.191 INFO running `"docker" "start" "-a" "b82d765031eb0089b26850225b3973d339c39b04ffb2220e46066acfa92f1b7b"`
Dec 02 14:50:51.746 INFO [stderr] usermod: no changes
Dec 02 14:50:51.768 INFO [stderr]    Compiling syscall v0.2.1 (/source)
Dec 02 14:50:51.832 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 14:50:51.832 INFO [stderr]   --> src/lib.rs:15:1
Dec 02 14:50:51.832 INFO [stderr]    |
Dec 02 14:50:51.832 INFO [stderr] 15 | #![feature(asm)]
Dec 02 14:50:51.832 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 02 14:50:51.832 INFO [stderr] 
Dec 02 14:50:51.832 INFO [stderr] error: aborting due to previous error
Dec 02 14:50:51.832 INFO [stderr] 
Dec 02 14:50:51.832 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 14:50:51.834 INFO [stderr] error: Could not compile `syscall`.
Dec 02 14:50:51.834 INFO [stderr] 
Dec 02 14:50:51.834 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 14:50:51.834 INFO [stderr] su: No module specific data is present
Dec 02 14:50:52.180 INFO running `"docker" "inspect" "b82d765031eb0089b26850225b3973d339c39b04ffb2220e46066acfa92f1b7b"`
Dec 02 14:50:52.277 INFO running `"docker" "rm" "-f" "b82d765031eb0089b26850225b3973d339c39b04ffb2220e46066acfa92f1b7b"`
Dec 02 14:50:52.414 INFO [stdout] b82d765031eb0089b26850225b3973d339c39b04ffb2220e46066acfa92f1b7b