Dec 06 09:10:34.542 INFO testing ThePerkinrex/PercOSv2 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 09:10:34.542 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 09:10:34.824 INFO [stdout] 04126c4dc2a7d6740d870724bc4c3fd99e70952d0d9eaca403ee2b554fbb191b
Dec 06 09:10:34.827 INFO running `"docker" "start" "-a" "04126c4dc2a7d6740d870724bc4c3fd99e70952d0d9eaca403ee2b554fbb191b"`
Dec 06 09:10:35.388 INFO [stderr] usermod: no changes
Dec 06 09:10:35.437 INFO [stderr]    Compiling bitflags v0.4.0
Dec 06 09:10:35.449 INFO [stderr]    Compiling volatile v0.2.4
Dec 06 09:10:35.449 INFO [stderr]    Compiling cpuio v0.2.0
Dec 06 09:10:35.449 INFO [stderr]    Compiling rlibc v1.0.0
Dec 06 09:10:35.449 INFO [stderr]    Compiling spin v0.4.9
Dec 06 09:10:35.669 INFO [stderr]    Compiling multiboot2 v0.1.0
Dec 06 09:10:36.116 INFO [stderr]    Compiling percos v2.0.0 (/source)
Dec 06 09:10:36.220 INFO [stderr] error[E0557]: feature has been removed
Dec 06 09:10:36.220 INFO [stderr]  --> src/lib.rs:3:12
Dec 06 09:10:36.220 INFO [stderr]   |
Dec 06 09:10:36.220 INFO [stderr] 3 | #![feature(panic_implementation)]
Dec 06 09:10:36.220 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 06 09:10:36.220 INFO [stderr]   |
Dec 06 09:10:36.220 INFO [stderr] note: subsumed by `#[panic_handler]`
Dec 06 09:10:36.220 INFO [stderr]  --> src/lib.rs:3:12
Dec 06 09:10:36.220 INFO [stderr]   |
Dec 06 09:10:36.220 INFO [stderr] 3 | #![feature(panic_implementation)]
Dec 06 09:10:36.220 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 06 09:10:36.220 INFO [stderr] 
Dec 06 09:10:36.380 INFO [stderr] error: aborting due to previous error
Dec 06 09:10:36.380 INFO [stderr] 
Dec 06 09:10:36.380 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 06 09:10:36.380 INFO [stderr] error: Could not compile `percos`.
Dec 06 09:10:36.380 INFO [stderr] 
Dec 06 09:10:36.380 INFO [stderr] To learn more, run the command again with --verbose.
Dec 06 09:10:36.388 INFO [stderr] su: No module specific data is present
Dec 06 09:10:36.886 INFO running `"docker" "inspect" "04126c4dc2a7d6740d870724bc4c3fd99e70952d0d9eaca403ee2b554fbb191b"`
Dec 06 09:10:37.062 INFO running `"docker" "rm" "-f" "04126c4dc2a7d6740d870724bc4c3fd99e70952d0d9eaca403ee2b554fbb191b"`
Dec 06 09:10:37.209 INFO [stdout] 04126c4dc2a7d6740d870724bc4c3fd99e70952d0d9eaca403ee2b554fbb191b