Aug 30 03:52:25.831 INFO checking safe_core-0.31.0 against master#545f22340f72ee0efaf6463efb43a2840e3d35db for pr-53699
Aug 30 03:52:25.831 INFO running: cargo +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets
Aug 30 03:52:25.832 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53699/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-3/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 03:52:26.097 INFO blam! e7e5e72923c99735d2d90e63db052d9d2c4f1b4fac094843f5e2c4f2544a173e
Aug 30 03:52:26.100 INFO running `"docker" "start" "-a" "e7e5e72923c99735d2d90e63db052d9d2c4f1b4fac094843f5e2c4f2544a173e"`
Aug 30 03:52:27.565 INFO kablam!     Checking c_linked_list v1.1.1
Aug 30 03:52:27.566 INFO kablam!     Checking cesu8 v1.1.0
Aug 30 03:52:27.625 INFO kablam!     Checking jni-sys v0.3.0
Aug 30 03:52:27.645 INFO kablam!     Checking lru_time_cache v0.7.0
Aug 30 03:52:27.651 INFO kablam!     Checking fake_clock v0.2.0
Aug 30 03:52:27.656 INFO kablam!     Checking atty v0.2.2
Aug 30 03:52:27.659 INFO kablam!     Checking termion v1.4.0
Aug 30 03:52:27.672 INFO kablam!     Checking base64 v0.9.2
Aug 30 03:52:29.752 INFO kablam!    Compiling walkdir v2.0.1
Aug 30 03:52:30.027 INFO kablam!     Checking combine v2.5.2
Aug 30 03:52:30.162 INFO kablam!     Checking bytes v0.4.9
Aug 30 03:52:30.670 INFO kablam!     Checking textwrap v0.6.0
Aug 30 03:52:30.778 INFO kablam!     Checking crossbeam-epoch v0.5.2
Aug 30 03:52:33.150 INFO kablam!     Checking get_if_addrs v0.4.1
Aug 30 03:52:33.698 INFO kablam!     Checking regex v0.2.11
Aug 30 03:52:34.153 INFO kablam!     Checking clap v2.25.1
Aug 30 03:52:35.049 INFO kablam!     Checking bincode v0.8.0
Aug 30 03:52:39.138 INFO kablam!     Checking hyper v0.10.13
Aug 30 03:52:39.145 INFO kablam!    Compiling flate2 v1.0.2
Aug 30 03:52:39.274 INFO kablam!     Checking crossbeam-deque v0.6.1
Aug 30 03:52:40.030 INFO kablam!    Compiling jni v0.10.1
Aug 30 03:52:42.123 INFO kablam!     Checking tokio-io v0.1.8
Aug 30 03:52:43.607 INFO kablam!     Checking ws v0.7.3
Aug 30 03:52:44.136 INFO kablam!     Checking log4rs v0.7.0
Aug 30 03:52:49.311 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 03:52:49.312 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Aug 30 03:52:49.312 INFO kablam!    |
Aug 30 03:52:49.312 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.312 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.312 INFO kablam!    |
Aug 30 03:52:49.312 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.312 INFO kablam! 
Aug 30 03:52:49.313 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 03:52:49.313 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Aug 30 03:52:49.313 INFO kablam!    |
Aug 30 03:52:49.313 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.313 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.313 INFO kablam!    |
Aug 30 03:52:49.313 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.313 INFO kablam! 
Aug 30 03:52:49.313 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 03:52:49.314 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Aug 30 03:52:49.314 INFO kablam!    |
Aug 30 03:52:49.314 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.314 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.314 INFO kablam!    |
Aug 30 03:52:49.314 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.314 INFO kablam! 
Aug 30 03:52:49.314 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 03:52:49.314 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Aug 30 03:52:49.314 INFO kablam!    |
Aug 30 03:52:49.314 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.314 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.314 INFO kablam!    |
Aug 30 03:52:49.314 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.314 INFO kablam! 
Aug 30 03:52:49.314 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 03:52:49.314 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Aug 30 03:52:49.314 INFO kablam!    |
Aug 30 03:52:49.314 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.314 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.314 INFO kablam!    |
Aug 30 03:52:49.314 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.314 INFO kablam! 
Aug 30 03:52:49.315 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 03:52:49.315 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Aug 30 03:52:49.315 INFO kablam!    |
Aug 30 03:52:49.315 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.315 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.315 INFO kablam!    |
Aug 30 03:52:49.315 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.315 INFO kablam! 
Aug 30 03:52:49.315 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 03:52:49.315 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Aug 30 03:52:49.315 INFO kablam!    |
Aug 30 03:52:49.315 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 30 03:52:49.315 INFO kablam!    |   ^^^^^
Aug 30 03:52:49.315 INFO kablam!    |
Aug 30 03:52:49.315 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 03:52:49.315 INFO kablam! 
Aug 30 03:52:49.827 INFO kablam! error: aborting due to 7 previous errors
Aug 30 03:52:49.827 INFO kablam! 
Aug 30 03:52:49.827 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 30 03:52:49.856 INFO kablam! error: Could not compile `log4rs`.
Aug 30 03:52:49.856 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 03:53:02.803 INFO kablam! error: build failed
Aug 30 03:53:02.805 INFO kablam! su: No module specific data is present
Aug 30 03:53:03.477 INFO running `"docker" "rm" "-f" "e7e5e72923c99735d2d90e63db052d9d2c4f1b4fac094843f5e2c4f2544a173e"`
Aug 30 03:53:03.642 INFO blam! e7e5e72923c99735d2d90e63db052d9d2c4f1b4fac094843f5e2c4f2544a173e