Aug 02 01:11:47.434 INFO checking rdoc-0.1.0 against 1.27.2 for lazy_static-1
Aug 02 01:11:47.434 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:11:47.434 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:11:47.434 INFO running `"docker" "create" "-v" "/tmp/crater.w1PNbLms1r2h:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 01:11:47.654 INFO blam! 743085e094dcd4e3956e360556cd81a8e5b668da7d1e58e7166fa77498669c74
Aug 02 01:11:47.657 INFO running `"docker" "start" "-a" "743085e094dcd4e3956e360556cd81a8e5b668da7d1e58e7166fa77498669c74"`
Aug 02 01:11:49.055 INFO kablam!     Checking rdoc v0.1.0 (file:///source)
Aug 02 01:11:50.878 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 01:11:50.878 INFO kablam!  --> src/lib.rs:4:1
Aug 02 01:11:50.878 INFO kablam!   |
Aug 02 01:11:50.878 INFO kablam! 4 | #![feature(plugin_registrar, rustc_private, type_ascription)]
Aug 02 01:11:50.878 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 01:11:50.878 INFO kablam! 
Aug 02 01:11:50.879 INFO kablam! error: aborting due to previous error
Aug 02 01:11:50.879 INFO kablam! 
Aug 02 01:11:50.880 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 01:11:50.895 INFO kablam! error: Could not compile `rdoc`.
Aug 02 01:11:50.897 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 01:11:51.044 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 01:11:51.045 INFO kablam!  --> src/lib.rs:4:1
Aug 02 01:11:51.045 INFO kablam!   |
Aug 02 01:11:51.045 INFO kablam! 4 | #![feature(plugin_registrar, rustc_private, type_ascription)]
Aug 02 01:11:51.045 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 01:11:51.045 INFO kablam! 
Aug 02 01:11:51.045 INFO kablam! error: aborting due to previous error
Aug 02 01:11:51.045 INFO kablam! 
Aug 02 01:11:51.045 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 01:11:51.057 INFO kablam! error: Could not compile `rdoc`.
Aug 02 01:11:51.057 INFO kablam! 
Aug 02 01:11:51.057 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 01:11:51.058 INFO kablam! su: No module specific data is present
Aug 02 01:11:51.757 INFO running `"docker" "rm" "-f" "743085e094dcd4e3956e360556cd81a8e5b668da7d1e58e7166fa77498669c74"`
Aug 02 01:11:51.897 INFO blam! 743085e094dcd4e3956e360556cd81a8e5b668da7d1e58e7166fa77498669c74