Aug 30 19:51:36.260 INFO checking dmio-0.1.0 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 19:51:36.260 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 19:51:36.261 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-2/try#2d477f9981361618ac78253c28051a66b6cea125:/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 +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 19:51:36.450 INFO blam! 74d0e5e1e1c96d64054f37f281e09b2d27d92676d8d446486e96a557e88057c2
Aug 30 19:51:36.454 INFO running `"docker" "start" "-a" "74d0e5e1e1c96d64054f37f281e09b2d27d92676d8d446486e96a557e88057c2"`
Aug 30 19:51:37.314 INFO kablam!     Checking log4rs v0.8.0
Aug 30 19:51:37.315 INFO kablam!     Checking dmio v0.1.0 (file:///source)
Aug 30 19:51:39.212 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)
Aug 30 19:51:39.212 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Aug 30 19:51:39.212 INFO kablam!    |
Aug 30 19:51:39.212 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.212 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.212 INFO kablam!    |
Aug 30 19:51:39.213 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.213 INFO kablam! 
Aug 30 19:51:39.214 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)
Aug 30 19:51:39.214 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Aug 30 19:51:39.214 INFO kablam!    |
Aug 30 19:51:39.214 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.214 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.214 INFO kablam!    |
Aug 30 19:51:39.214 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.215 INFO kablam! 
Aug 30 19:51:39.215 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)
Aug 30 19:51:39.215 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Aug 30 19:51:39.215 INFO kablam!    |
Aug 30 19:51:39.215 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.215 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.216 INFO kablam!    |
Aug 30 19:51:39.216 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.216 INFO kablam! 
Aug 30 19:51:39.217 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)
Aug 30 19:51:39.217 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
Aug 30 19:51:39.217 INFO kablam!    |
Aug 30 19:51:39.217 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.217 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.217 INFO kablam!    |
Aug 30 19:51:39.218 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.218 INFO kablam! 
Aug 30 19:51:39.219 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)
Aug 30 19:51:39.219 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Aug 30 19:51:39.219 INFO kablam!    |
Aug 30 19:51:39.219 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.219 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.219 INFO kablam!    |
Aug 30 19:51:39.219 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.220 INFO kablam! 
Aug 30 19:51:39.220 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)
Aug 30 19:51:39.220 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Aug 30 19:51:39.220 INFO kablam!    |
Aug 30 19:51:39.220 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.220 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.221 INFO kablam!    |
Aug 30 19:51:39.221 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.221 INFO kablam! 
Aug 30 19:51:39.222 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)
Aug 30 19:51:39.222 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Aug 30 19:51:39.222 INFO kablam!    |
Aug 30 19:51:39.222 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 30 19:51:39.222 INFO kablam!    |   ^^^^^
Aug 30 19:51:39.222 INFO kablam!    |
Aug 30 19:51:39.223 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 19:51:39.223 INFO kablam! 
Aug 30 19:51:39.339 INFO kablam! error: aborting due to 7 previous errors
Aug 30 19:51:39.340 INFO kablam! 
Aug 30 19:51:39.340 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 30 19:51:39.349 INFO kablam! error: Could not compile `log4rs`.
Aug 30 19:51:39.349 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 19:51:39.734 INFO kablam! error: build failed
Aug 30 19:51:39.735 INFO kablam! su: No module specific data is present
Aug 30 19:51:40.230 INFO running `"docker" "rm" "-f" "74d0e5e1e1c96d64054f37f281e09b2d27d92676d8d446486e96a557e88057c2"`
Aug 30 19:51:40.339 INFO blam! 74d0e5e1e1c96d64054f37f281e09b2d27d92676d8d446486e96a557e88057c2