Aug 02 05:07:48.615 INFO checking list_builder-0.0.2 against 1.27.2+tmplazy for lazy_static-1
Aug 02 05:07:48.615 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:07:48.615 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:07:48.615 INFO running `"docker" "create" "-v" "/tmp/crater.WReWuple9orl:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 05:07:48.812 INFO blam! 5a30d3f98f6dfb2fb64aebd793d938b5a4dcf4671ff69c5b4844a1ffa9f093c6
Aug 02 05:07:48.815 INFO running `"docker" "start" "-a" "5a30d3f98f6dfb2fb64aebd793d938b5a4dcf4671ff69c5b4844a1ffa9f093c6"`
Aug 02 05:07:49.725 INFO kablam!     Checking list_builder v0.0.2 (file:///source)
Aug 02 05:07:50.117 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:07:50.117 INFO kablam!  --> src/lib.rs:1:1
Aug 02 05:07:50.117 INFO kablam!   |
Aug 02 05:07:50.117 INFO kablam! 1 | #![feature(core)]
Aug 02 05:07:50.117 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:07:50.117 INFO kablam! 
Aug 02 05:07:50.117 INFO kablam! error: aborting due to previous error
Aug 02 05:07:50.117 INFO kablam! 
Aug 02 05:07:50.117 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:07:50.124 INFO kablam! error: Could not compile `list_builder`.
Aug 02 05:07:50.124 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:07:50.151 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:07:50.151 INFO kablam!  --> src/lib.rs:1:1
Aug 02 05:07:50.151 INFO kablam!   |
Aug 02 05:07:50.151 INFO kablam! 1 | #![feature(core)]
Aug 02 05:07:50.151 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:07:50.152 INFO kablam! 
Aug 02 05:07:50.152 INFO kablam! error: aborting due to previous error
Aug 02 05:07:50.152 INFO kablam! 
Aug 02 05:07:50.152 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:07:50.157 INFO kablam! error: Could not compile `list_builder`.
Aug 02 05:07:50.157 INFO kablam! 
Aug 02 05:07:50.157 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 05:07:50.159 INFO kablam! su: No module specific data is present
Aug 02 05:07:51.050 INFO running `"docker" "rm" "-f" "5a30d3f98f6dfb2fb64aebd793d938b5a4dcf4671ff69c5b4844a1ffa9f093c6"`
Aug 02 05:07:51.139 INFO blam! 5a30d3f98f6dfb2fb64aebd793d938b5a4dcf4671ff69c5b4844a1ffa9f093c6