Sep 04 21:00:32.225 INFO checking connectr-1.0.0 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 21:00:32.226 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 21:00:32.226 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 21:00:32.410 INFO blam! 4360f8ffc7a2d23447186b49b123ad180f87e11db56ba850cc00f92291b72019
Sep 04 21:00:32.412 INFO running `"docker" "start" "-a" "4360f8ffc7a2d23447186b49b123ad180f87e11db56ba850cc00f92291b72019"`
Sep 04 21:00:33.509 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 04 21:00:33.509 INFO kablam!     Checking serde-value v0.5.2
Sep 04 21:00:33.509 INFO kablam!     Checking timer v0.2.0
Sep 04 21:00:35.899 INFO kablam!     Checking log4rs v0.8.0
Sep 04 21:00:37.470 INFO kablam!     Checking tokio-tcp v0.1.1
Sep 04 21:00:37.474 INFO kablam!     Checking tokio-uds v0.2.1
Sep 04 21:00:37.477 INFO kablam!     Checking tokio-udp v0.1.2
Sep 04 21:00:38.721 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.721 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 04 21:00:38.721 INFO kablam!    |
Sep 04 21:00:38.721 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.721 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.738 INFO kablam!    |
Sep 04 21:00:38.738 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.738 INFO kablam! 
Sep 04 21:00:38.739 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.739 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 04 21:00:38.739 INFO kablam!    |
Sep 04 21:00:38.739 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.739 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.739 INFO kablam!    |
Sep 04 21:00:38.739 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.739 INFO kablam! 
Sep 04 21:00:38.740 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.740 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 04 21:00:38.740 INFO kablam!    |
Sep 04 21:00:38.740 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.740 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.740 INFO kablam!    |
Sep 04 21:00:38.740 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.740 INFO kablam! 
Sep 04 21:00:38.741 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.741 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Sep 04 21:00:38.741 INFO kablam!    |
Sep 04 21:00:38.741 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.741 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.741 INFO kablam!    |
Sep 04 21:00:38.741 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.741 INFO kablam! 
Sep 04 21:00:38.742 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.742 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 04 21:00:38.742 INFO kablam!    |
Sep 04 21:00:38.742 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.742 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.742 INFO kablam!    |
Sep 04 21:00:38.742 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.742 INFO kablam! 
Sep 04 21:00:38.743 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.743 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 04 21:00:38.743 INFO kablam!    |
Sep 04 21:00:38.743 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.743 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.743 INFO kablam!    |
Sep 04 21:00:38.743 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.743 INFO kablam! 
Sep 04 21:00:38.746 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 04 21:00:38.746 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 04 21:00:38.746 INFO kablam!    |
Sep 04 21:00:38.746 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 21:00:38.746 INFO kablam!    |   ^^^^^
Sep 04 21:00:38.746 INFO kablam!    |
Sep 04 21:00:38.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 21:00:38.746 INFO kablam! 
Sep 04 21:00:38.871 INFO kablam! error: aborting due to 7 previous errors
Sep 04 21:00:38.871 INFO kablam! 
Sep 04 21:00:38.871 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 21:00:38.880 INFO kablam! error: Could not compile `log4rs`.
Sep 04 21:00:38.881 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 21:00:41.486 INFO kablam! error: build failed
Sep 04 21:00:41.487 INFO kablam! su: No module specific data is present
Sep 04 21:00:42.047 INFO running `"docker" "rm" "-f" "4360f8ffc7a2d23447186b49b123ad180f87e11db56ba850cc00f92291b72019"`
Sep 04 21:00:42.176 INFO blam! 4360f8ffc7a2d23447186b49b123ad180f87e11db56ba850cc00f92291b72019