Dec 14 05:20:22.272 INFO testing ThePerkinrex/PercOSv2 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 05:20:22.272 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 05:20:27.135 INFO [stdout] 71e71aabb2e66e0a49138de768e7980bf74b514c9568cdd8a0c64f5944ac9140
Dec 14 05:20:27.135 INFO running `"docker" "start" "-a" "71e71aabb2e66e0a49138de768e7980bf74b514c9568cdd8a0c64f5944ac9140"`
Dec 14 05:20:27.979 INFO [stderr] usermod: no changes
Dec 14 05:20:27.979 INFO [stderr]    Compiling bitflags v0.4.0
Dec 14 05:20:27.979 INFO [stderr]    Compiling cpuio v0.2.0
Dec 14 05:20:27.979 INFO [stderr]    Compiling rlibc v1.0.0
Dec 14 05:20:28.353 INFO [stderr]    Compiling multiboot2 v0.1.0
Dec 14 05:20:28.723 INFO [stderr]    Compiling percos v2.0.0 (/source)
Dec 14 05:20:28.764 INFO [stderr] error[E0557]: feature has been removed
Dec 14 05:20:28.764 INFO [stderr]  --> src/lib.rs:3:12
Dec 14 05:20:28.764 INFO [stderr]   |
Dec 14 05:20:28.764 INFO [stderr] 3 | #![feature(panic_implementation)]
Dec 14 05:20:28.764 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 14 05:20:28.764 INFO [stderr]   |
Dec 14 05:20:28.764 INFO [stderr] note: subsumed by `#[panic_handler]`
Dec 14 05:20:28.764 INFO [stderr]  --> src/lib.rs:3:12
Dec 14 05:20:28.764 INFO [stderr]   |
Dec 14 05:20:28.764 INFO [stderr] 3 | #![feature(panic_implementation)]
Dec 14 05:20:28.764 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 14 05:20:28.764 INFO [stderr] 
Dec 14 05:20:28.896 INFO [stderr] warning: unused import: `core::fmt::Debug`
Dec 14 05:20:28.896 INFO [stderr]  --> src/shell/mod.rs:2:5
Dec 14 05:20:28.896 INFO [stderr]   |
Dec 14 05:20:28.896 INFO [stderr] 2 | use core::fmt::Debug;
Dec 14 05:20:28.896 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 14 05:20:28.896 INFO [stderr]   |
Dec 14 05:20:28.896 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 05:20:28.896 INFO [stderr] 
Dec 14 05:20:28.899 INFO [stderr] warning: unused import: `memory::FrameAllocator`
Dec 14 05:20:28.899 INFO [stderr]   --> src/lib.rs:30:5
Dec 14 05:20:28.899 INFO [stderr]    |
Dec 14 05:20:28.899 INFO [stderr] 30 | use memory::FrameAllocator;
Dec 14 05:20:28.899 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 14 05:20:28.899 INFO [stderr] 
Dec 14 05:20:29.044 INFO [stderr] error: aborting due to previous error
Dec 14 05:20:29.044 INFO [stderr] 
Dec 14 05:20:29.044 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 14 05:20:29.050 INFO [stderr] error: Could not compile `percos`.
Dec 14 05:20:29.050 INFO [stderr] 
Dec 14 05:20:29.050 INFO [stderr] To learn more, run the command again with --verbose.
Dec 14 05:20:29.052 INFO [stderr] su: No module specific data is present
Dec 14 05:20:29.375 INFO running `"docker" "inspect" "71e71aabb2e66e0a49138de768e7980bf74b514c9568cdd8a0c64f5944ac9140"`
Dec 14 05:20:29.464 INFO running `"docker" "rm" "-f" "71e71aabb2e66e0a49138de768e7980bf74b514c9568cdd8a0c64f5944ac9140"`
Dec 14 05:20:29.560 INFO [stdout] 71e71aabb2e66e0a49138de768e7980bf74b514c9568cdd8a0c64f5944ac9140