Aug 02 04:34:35.399 INFO checking mcs-0.1.1 against 1.27.2 for lazy_static-1
Aug 02 04:34:35.399 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:34:35.399 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:34:35.399 INFO running `"docker" "create" "-v" "/tmp/crater.CUNLDEIehOUP:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 04:34:35.643 INFO blam! ee31a8254a6331e4c697ce79653ee6002b4d3891d64bec11ed658aae4fb38b5e
Aug 02 04:34:35.645 INFO running `"docker" "start" "-a" "ee31a8254a6331e4c697ce79653ee6002b4d3891d64bec11ed658aae4fb38b5e"`
Aug 02 04:34:36.493 INFO kablam!     Checking mcs v0.1.1 (file:///source)
Aug 02 04:34:36.711 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:34:36.711 INFO kablam!  --> src/lib.rs:1:35
Aug 02 04:34:36.711 INFO kablam!   |
Aug 02 04:34:36.712 INFO kablam! 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
Aug 02 04:34:36.712 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 04:34:36.712 INFO kablam! 
Aug 02 04:34:36.712 INFO kablam! error: aborting due to previous error
Aug 02 04:34:36.712 INFO kablam! 
Aug 02 04:34:36.712 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:34:36.717 INFO kablam! error: Could not compile `mcs`.
Aug 02 04:34:36.717 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:34:36.983 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:34:36.983 INFO kablam!  --> src/lib.rs:1:35
Aug 02 04:34:36.983 INFO kablam!   |
Aug 02 04:34:36.983 INFO kablam! 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
Aug 02 04:34:36.983 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 04:34:36.983 INFO kablam! 
Aug 02 04:34:36.983 INFO kablam! error: aborting due to previous error
Aug 02 04:34:36.983 INFO kablam! 
Aug 02 04:34:36.983 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:34:36.991 INFO kablam! error: Could not compile `mcs`.
Aug 02 04:34:36.991 INFO kablam! 
Aug 02 04:34:36.991 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 04:34:36.992 INFO kablam! su: No module specific data is present
Aug 02 04:34:38.359 INFO running `"docker" "rm" "-f" "ee31a8254a6331e4c697ce79653ee6002b4d3891d64bec11ed658aae4fb38b5e"`
Aug 02 04:34:38.536 INFO blam! ee31a8254a6331e4c697ce79653ee6002b4d3891d64bec11ed658aae4fb38b5e