Aug 30 13:28:44.634 INFO checking iot_center-0.0.1 against master#545f22340f72ee0efaf6463efb43a2840e3d35db for pr-53699
Aug 30 13:28:44.634 INFO running: cargo +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets
Aug 30 13:28:44.635 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53699/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-1/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/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 +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 13:28:44.825 INFO blam! a3abebda631b64975fcdea7e75fe9c50db653afe1738b1ee9d0afa62bf1019e8
Aug 30 13:28:44.827 INFO running `"docker" "start" "-a" "a3abebda631b64975fcdea7e75fe9c50db653afe1738b1ee9d0afa62bf1019e8"`
Aug 30 13:28:45.508 INFO kablam!     Checking chan-signal v0.3.2
Aug 30 13:28:45.509 INFO kablam!     Checking log4rs v0.8.0
Aug 30 13:28:45.509 INFO kablam!     Checking mqtt-protocol v0.3.1
Aug 30 13:28:47.006 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 13:28:47.006 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Aug 30 13:28:47.006 INFO kablam!    |
Aug 30 13:28:47.006 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.007 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.007 INFO kablam!    |
Aug 30 13:28:47.007 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.007 INFO kablam! 
Aug 30 13:28:47.007 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 13:28:47.007 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Aug 30 13:28:47.007 INFO kablam!    |
Aug 30 13:28:47.007 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.007 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.007 INFO kablam!    |
Aug 30 13:28:47.007 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.007 INFO kablam! 
Aug 30 13:28:47.007 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 13:28:47.007 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 13:28:47.007 INFO kablam!    |
Aug 30 13:28:47.007 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.007 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.008 INFO kablam!    |
Aug 30 13:28:47.008 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.008 INFO kablam! 
Aug 30 13:28:47.008 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 13:28:47.008 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 13:28:47.008 INFO kablam!    |
Aug 30 13:28:47.008 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.008 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.008 INFO kablam!    |
Aug 30 13:28:47.008 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.008 INFO kablam! 
Aug 30 13:28:47.008 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 13:28:47.008 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 13:28:47.008 INFO kablam!    |
Aug 30 13:28:47.008 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.008 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.008 INFO kablam!    |
Aug 30 13:28:47.008 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.008 INFO kablam! 
Aug 30 13:28:47.008 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 13:28:47.008 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 13:28:47.009 INFO kablam!    |
Aug 30 13:28:47.009 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.009 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.009 INFO kablam!    |
Aug 30 13:28:47.009 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.009 INFO kablam! 
Aug 30 13:28:47.009 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 13:28:47.009 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Aug 30 13:28:47.009 INFO kablam!    |
Aug 30 13:28:47.009 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 30 13:28:47.009 INFO kablam!    |   ^^^^^
Aug 30 13:28:47.009 INFO kablam!    |
Aug 30 13:28:47.009 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 13:28:47.009 INFO kablam! 
Aug 30 13:28:47.078 INFO kablam! error: aborting due to 7 previous errors
Aug 30 13:28:47.078 INFO kablam! 
Aug 30 13:28:47.078 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 30 13:28:47.085 INFO kablam! error: Could not compile `log4rs`.
Aug 30 13:28:47.085 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 13:28:48.512 INFO kablam! error: build failed
Aug 30 13:28:48.513 INFO kablam! su: No module specific data is present
Aug 30 13:28:48.883 INFO running `"docker" "rm" "-f" "a3abebda631b64975fcdea7e75fe9c50db653afe1738b1ee9d0afa62bf1019e8"`
Aug 30 13:28:48.985 INFO blam! a3abebda631b64975fcdea7e75fe9c50db653afe1738b1ee9d0afa62bf1019e8