Aug 02 06:39:33.790 INFO checking intercom-attributes-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 06:39:33.790 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:39:33.790 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:39:33.790 INFO running `"docker" "create" "-v" "/tmp/crater.2q5IcMYkd0Bp:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2+tmplazy:/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 06:39:33.986 INFO blam! 7f87935b1a91bf4af0988ae74e27484b49647c644c7db658f8dee68451caaa9b
Aug 02 06:39:33.988 INFO running `"docker" "start" "-a" "7f87935b1a91bf4af0988ae74e27484b49647c644c7db658f8dee68451caaa9b"`
Aug 02 06:39:36.179 INFO kablam!     Checking semver-parser v0.7.0
Aug 02 06:39:36.182 INFO kablam!    Compiling rustfmt-nightly v0.2.17
Aug 02 06:39:36.183 INFO kablam!    Compiling sha1 v0.3.0
Aug 02 06:39:36.183 INFO kablam!     Checking unicode-segmentation v1.2.1
Aug 02 06:39:36.186 INFO kablam!     Checking term v0.4.6
Aug 02 06:39:36.188 INFO kablam!     Checking difference v1.0.0
Aug 02 06:39:36.190 INFO kablam!     Checking regex-syntax v0.5.6
Aug 02 06:39:37.772 INFO kablam!     Checking log v0.3.9
Aug 02 06:39:37.796 INFO kablam!     Checking syn v0.11.11
Aug 02 06:39:37.875 INFO kablam!     Checking serde_json v1.0.24
Aug 02 06:39:38.586 INFO kablam!     Checking toml v0.4.6
Aug 02 06:39:38.773 INFO kablam!    Compiling intercom-common v0.2.0
Aug 02 06:39:38.909 INFO kablam!    Compiling derive-new v0.5.5
Aug 02 06:39:39.033 INFO kablam!     Checking semver v0.8.0
Aug 02 06:39:40.671 INFO kablam!     Checking strings v0.1.1
Aug 02 06:39:55.137 INFO kablam!     Checking cargo_metadata v0.3.3
Aug 02 06:39:57.393 INFO kablam!    Compiling intercom-attributes v0.2.0 (file:///source)
Aug 02 06:39:58.734 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:39:58.734 INFO kablam!  --> src/lib.rs:1:1
Aug 02 06:39:58.734 INFO kablam!   |
Aug 02 06:39:58.734 INFO kablam! 1 | #![feature(proc_macro)]
Aug 02 06:39:58.734 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:39:58.735 INFO kablam! 
Aug 02 06:39:58.735 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:39:58.735 INFO kablam!  --> src/lib.rs:3:1
Aug 02 06:39:58.735 INFO kablam!   |
Aug 02 06:39:58.735 INFO kablam! 3 | #![feature(catch_expr)]
Aug 02 06:39:58.735 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:39:58.736 INFO kablam! 
Aug 02 06:39:58.736 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:39:58.736 INFO kablam!  --> src/lib.rs:4:1
Aug 02 06:39:58.736 INFO kablam!   |
Aug 02 06:39:58.736 INFO kablam! 4 | #![feature(type_ascription)]
Aug 02 06:39:58.736 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:39:58.737 INFO kablam! 
Aug 02 06:39:58.740 INFO kablam! error: aborting due to 3 previous errors
Aug 02 06:39:58.741 INFO kablam! 
Aug 02 06:39:58.741 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:39:58.755 INFO kablam! error: Could not compile `intercom-attributes`.
Aug 02 06:39:58.755 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:39:59.647 INFO kablam! error: build failed
Aug 02 06:39:59.647 INFO kablam! su: No module specific data is present
Aug 02 06:40:00.726 INFO running `"docker" "rm" "-f" "7f87935b1a91bf4af0988ae74e27484b49647c644c7db658f8dee68451caaa9b"`
Aug 02 06:40:00.817 INFO blam! 7f87935b1a91bf4af0988ae74e27484b49647c644c7db658f8dee68451caaa9b