Aug 01 22:00:56.962 INFO checking slog-config-0.4.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 22:00:56.962 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:00:56.962 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:00:56.962 INFO running `"docker" "create" "-v" "/tmp/crater.sUSKMYuPRetM:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 01 22:00:57.215 INFO blam! c6eeec580d4bd58e88f9a1a33a9e8b213c83f00aa86533c0ddf1af83eee683aa
Aug 01 22:00:57.219 INFO running `"docker" "start" "-a" "c6eeec580d4bd58e88f9a1a33a9e8b213c83f00aa86533c0ddf1af83eee683aa"`
Aug 01 22:00:58.314 INFO kablam! warning: Package `toml v0.4.6` does not have feature `serde`. It has a required dependency with that name, but only optional dependencies can be used as features. This is currently a warning to ease the transition, but it will become an error in the future.
Aug 01 22:00:58.348 INFO kablam!     Checking toml v0.4.6
Aug 01 22:00:58.348 INFO kablam!     Checking slog-json v2.2.0
Aug 01 22:01:03.552 INFO kablam!     Checking slog-config v0.4.0 (file:///source)
Aug 01 22:01:04.467 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:01:04.467 INFO kablam!  --> src/lib.rs:6:1
Aug 01 22:01:04.467 INFO kablam!   |
Aug 01 22:01:04.467 INFO kablam! 6 | #![feature(custom_derive)]
Aug 01 22:01:04.467 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:01:04.467 INFO kablam! 
Aug 01 22:01:04.468 INFO kablam! error: aborting due to previous error
Aug 01 22:01:04.472 INFO kablam! 
Aug 01 22:01:04.473 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:01:04.497 INFO kablam! error: Could not compile `slog-config`.
Aug 01 22:01:04.498 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:01:04.855 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:01:04.855 INFO kablam!  --> src/lib.rs:6:1
Aug 01 22:01:04.855 INFO kablam!   |
Aug 01 22:01:04.855 INFO kablam! 6 | #![feature(custom_derive)]
Aug 01 22:01:04.855 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:01:04.855 INFO kablam! 
Aug 01 22:01:04.856 INFO kablam! error: aborting due to previous error
Aug 01 22:01:04.856 INFO kablam! 
Aug 01 22:01:04.856 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:01:04.882 INFO kablam! error: Could not compile `slog-config`.
Aug 01 22:01:04.882 INFO kablam! 
Aug 01 22:01:04.882 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 22:01:04.884 INFO kablam! su: No module specific data is present
Aug 01 22:01:05.439 INFO running `"docker" "rm" "-f" "c6eeec580d4bd58e88f9a1a33a9e8b213c83f00aa86533c0ddf1af83eee683aa"`
Aug 01 22:01:05.603 INFO blam! c6eeec580d4bd58e88f9a1a33a9e8b213c83f00aa86533c0ddf1af83eee683aa