Sep 01 23:36:03.314 INFO checking crust-0.28.1 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 23:36:03.314 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 23:36:03.314 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-1/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 23:36:03.519 INFO blam! 27e59e758ba051638a07c028106d1a95a5f30ef2d873419780fff63cda9a7139
Sep 01 23:36:03.521 INFO running `"docker" "start" "-a" "27e59e758ba051638a07c028106d1a95a5f30ef2d873419780fff63cda9a7139"`
Sep 01 23:36:04.590 INFO kablam!     Checking bytes v0.4.9
Sep 01 23:36:04.597 INFO kablam!     Checking textwrap v0.6.0
Sep 01 23:36:04.598 INFO kablam!     Checking bincode v0.8.0
Sep 01 23:36:04.605 INFO kablam!     Checking hyper v0.10.13
Sep 01 23:36:04.605 INFO kablam!    Compiling rust_sodium-sys v0.5.0
Sep 01 23:36:04.605 INFO kablam!     Checking log4rs v0.7.0
Sep 01 23:36:07.909 INFO kablam!     Checking clap v2.25.1
Sep 01 23:36:11.676 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 01 23:36:11.676 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 01 23:36:11.676 INFO kablam!    |
Sep 01 23:36:11.676 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.676 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.676 INFO kablam!    |
Sep 01 23:36:11.676 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.676 INFO kablam! 
Sep 01 23:36:11.677 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 01 23:36:11.677 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 01 23:36:11.677 INFO kablam!    |
Sep 01 23:36:11.677 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.677 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.677 INFO kablam!    |
Sep 01 23:36:11.677 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.677 INFO kablam! 
Sep 01 23:36:11.684 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 01 23:36:11.685 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 01 23:36:11.685 INFO kablam!    |
Sep 01 23:36:11.685 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.685 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.685 INFO kablam!    |
Sep 01 23:36:11.685 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.685 INFO kablam! 
Sep 01 23:36:11.686 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 01 23:36:11.686 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
Sep 01 23:36:11.686 INFO kablam!    |
Sep 01 23:36:11.686 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.686 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.686 INFO kablam!    |
Sep 01 23:36:11.686 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.686 INFO kablam! 
Sep 01 23:36:11.686 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 01 23:36:11.686 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 01 23:36:11.686 INFO kablam!    |
Sep 01 23:36:11.686 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.686 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.686 INFO kablam!    |
Sep 01 23:36:11.686 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.686 INFO kablam! 
Sep 01 23:36:11.686 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 01 23:36:11.686 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 01 23:36:11.686 INFO kablam!    |
Sep 01 23:36:11.686 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.686 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.686 INFO kablam!    |
Sep 01 23:36:11.686 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.687 INFO kablam! 
Sep 01 23:36:11.687 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 01 23:36:11.687 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 01 23:36:11.687 INFO kablam!    |
Sep 01 23:36:11.687 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 01 23:36:11.687 INFO kablam!    |   ^^^^^
Sep 01 23:36:11.687 INFO kablam!    |
Sep 01 23:36:11.687 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 23:36:11.687 INFO kablam! 
Sep 01 23:36:11.913 INFO kablam!     Checking ws v0.7.3
Sep 01 23:36:11.945 INFO kablam! error: aborting due to 7 previous errors
Sep 01 23:36:11.946 INFO kablam! 
Sep 01 23:36:11.946 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 01 23:36:11.967 INFO kablam! error: Could not compile `log4rs`.
Sep 01 23:36:11.968 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 23:37:23.551 INFO kablam! error: build failed
Sep 01 23:37:23.553 INFO kablam! su: No module specific data is present
Sep 01 23:37:24.270 INFO running `"docker" "rm" "-f" "27e59e758ba051638a07c028106d1a95a5f30ef2d873419780fff63cda9a7139"`
Sep 01 23:37:24.366 INFO blam! 27e59e758ba051638a07c028106d1a95a5f30ef2d873419780fff63cda9a7139