Aug 30 04:31:47.313 INFO checking safe_core-0.31.0 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 04:31:47.313 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 04:31:47.313 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 04:31:47.537 INFO blam! 5cf4b92323098a920b912ef413c1d09903d6053a505c0c4e0d7d9a8f6d35791a
Aug 30 04:31:47.540 INFO running `"docker" "start" "-a" "5cf4b92323098a920b912ef413c1d09903d6053a505c0c4e0d7d9a8f6d35791a"`
Aug 30 04:31:48.956 INFO kablam!     Checking jni-sys v0.3.0
Aug 30 04:31:48.957 INFO kablam!     Checking fake_clock v0.2.0
Aug 30 04:31:48.957 INFO kablam!     Checking lru_time_cache v0.7.0
Aug 30 04:31:48.959 INFO kablam!     Checking atty v0.2.2
Aug 30 04:31:48.959 INFO kablam!     Checking termion v1.4.0
Aug 30 04:31:48.966 INFO kablam!     Checking thread_local v0.3.6
Aug 30 04:31:48.966 INFO kablam!    Compiling walkdir v2.0.1
Aug 30 04:31:48.967 INFO kablam!     Checking base64 v0.9.2
Aug 30 04:31:50.624 INFO kablam!     Checking combine v2.5.2
Aug 30 04:31:50.980 INFO kablam!     Checking crossbeam-epoch v0.5.2
Aug 30 04:31:51.722 INFO kablam!     Checking bytes v0.4.9
Aug 30 04:31:51.892 INFO kablam!     Checking textwrap v0.6.0
Aug 30 04:31:55.439 INFO kablam!     Checking regex v0.2.11
Aug 30 04:31:55.989 INFO kablam!     Checking clap v2.25.1
Aug 30 04:31:56.028 INFO kablam!     Checking bincode v0.8.0
Aug 30 04:31:56.065 INFO kablam!     Checking hyper v0.10.13
Aug 30 04:31:56.154 INFO kablam!    Compiling flate2 v1.0.2
Aug 30 04:31:56.680 INFO kablam!    Compiling jni v0.10.1
Aug 30 04:32:00.650 INFO kablam!     Checking crossbeam-deque v0.6.1
Aug 30 04:32:01.409 INFO kablam!     Checking tokio-io v0.1.8
Aug 30 04:32:02.368 INFO kablam!     Checking ws v0.7.3
Aug 30 04:32:05.797 INFO kablam!     Checking log4rs v0.7.0
Aug 30 04:32:09.602 INFO kablam!     Checking tokio-threadpool v0.1.6
Aug 30 04:32:10.565 INFO kablam!    Compiling zip v0.2.8
Aug 30 04:32:11.433 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 04:32:11.433 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Aug 30 04:32:11.433 INFO kablam!    |
Aug 30 04:32:11.433 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.433 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.434 INFO kablam!    |
Aug 30 04:32:11.434 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.434 INFO kablam! 
Aug 30 04:32:11.434 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 04:32:11.434 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Aug 30 04:32:11.434 INFO kablam!    |
Aug 30 04:32:11.434 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.434 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.435 INFO kablam!    |
Aug 30 04:32:11.435 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.435 INFO kablam! 
Aug 30 04:32:11.436 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 04:32:11.436 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 04:32:11.436 INFO kablam!    |
Aug 30 04:32:11.436 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.436 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.436 INFO kablam!    |
Aug 30 04:32:11.436 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.436 INFO kablam! 
Aug 30 04:32:11.437 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 04:32:11.437 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 04:32:11.437 INFO kablam!    |
Aug 30 04:32:11.437 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.437 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.437 INFO kablam!    |
Aug 30 04:32:11.438 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.438 INFO kablam! 
Aug 30 04:32:11.440 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 04:32:11.440 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 04:32:11.440 INFO kablam!    |
Aug 30 04:32:11.440 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.440 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.440 INFO kablam!    |
Aug 30 04:32:11.440 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.440 INFO kablam! 
Aug 30 04:32:11.441 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 04:32:11.441 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 04:32:11.441 INFO kablam!    |
Aug 30 04:32:11.441 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.441 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.448 INFO kablam!    |
Aug 30 04:32:11.448 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.449 INFO kablam! 
Aug 30 04:32:11.449 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 04:32:11.449 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Aug 30 04:32:11.449 INFO kablam!    |
Aug 30 04:32:11.449 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 30 04:32:11.449 INFO kablam!    |   ^^^^^
Aug 30 04:32:11.449 INFO kablam!    |
Aug 30 04:32:11.450 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:32:11.450 INFO kablam! 
Aug 30 04:32:11.989 INFO kablam! error: aborting due to 7 previous errors
Aug 30 04:32:11.990 INFO kablam! 
Aug 30 04:32:11.990 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 30 04:32:12.029 INFO kablam! error: Could not compile `log4rs`.
Aug 30 04:32:12.030 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 04:32:23.674 INFO kablam! error: build failed
Aug 30 04:32:23.679 INFO kablam! su: No module specific data is present
Aug 30 04:32:24.236 INFO running `"docker" "rm" "-f" "5cf4b92323098a920b912ef413c1d09903d6053a505c0c4e0d7d9a8f6d35791a"`
Aug 30 04:32:24.371 INFO blam! 5cf4b92323098a920b912ef413c1d09903d6053a505c0c4e0d7d9a8f6d35791a