Sep 04 20:31:08.598 INFO checking crust-0.31.0 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 20:31:08.598 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 20:31:08.598 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-2/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 20:31:08.761 INFO blam! cd4e7547cd2eafdef5d19f63dc1bfebc4251b2014c85f084ead0d4616294fbbb
Sep 04 20:31:08.764 INFO running `"docker" "start" "-a" "cd4e7547cd2eafdef5d19f63dc1bfebc4251b2014c85f084ead0d4616294fbbb"`
Sep 04 20:31:09.912 INFO kablam!    Compiling base64 v0.9.2
Sep 04 20:31:09.915 INFO kablam!    Compiling bytes v0.4.9
Sep 04 20:31:09.920 INFO kablam!    Compiling url v1.5.1
Sep 04 20:31:09.921 INFO kablam!     Checking regex v0.2.11
Sep 04 20:31:09.921 INFO kablam!    Compiling tokio-threadpool v0.1.6
Sep 04 20:31:09.921 INFO kablam!    Compiling libflate v0.1.16
Sep 04 20:31:09.922 INFO kablam!     Checking bincode v0.8.0
Sep 04 20:31:16.348 INFO kablam!     Checking config_file_handler v0.11.0
Sep 04 20:31:16.412 INFO kablam!     Checking hyper v0.10.13
Sep 04 20:31:18.019 INFO kablam!     Checking ws v0.7.3
Sep 04 20:31:20.471 INFO kablam!     Checking log4rs v0.7.0
Sep 04 20:31:20.558 INFO kablam!    Compiling tokio-io v0.1.8
Sep 04 20:31:26.504 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 04 20:31:26.504 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 04 20:31:26.504 INFO kablam!    |
Sep 04 20:31:26.504 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.504 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.505 INFO kablam!    |
Sep 04 20:31:26.506 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.506 INFO kablam! 
Sep 04 20:31:26.507 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 04 20:31:26.507 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 04 20:31:26.507 INFO kablam!    |
Sep 04 20:31:26.507 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.507 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.508 INFO kablam!    |
Sep 04 20:31:26.508 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.508 INFO kablam! 
Sep 04 20:31:26.509 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 04 20:31:26.509 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 04 20:31:26.509 INFO kablam!    |
Sep 04 20:31:26.509 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.509 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.510 INFO kablam!    |
Sep 04 20:31:26.510 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.511 INFO kablam! 
Sep 04 20:31:26.511 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 04 20:31:26.512 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 04 20:31:26.512 INFO kablam!    |
Sep 04 20:31:26.512 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.512 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.512 INFO kablam!    |
Sep 04 20:31:26.513 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.513 INFO kablam! 
Sep 04 20:31:26.514 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 04 20:31:26.514 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 04 20:31:26.514 INFO kablam!    |
Sep 04 20:31:26.514 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.514 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.514 INFO kablam!    |
Sep 04 20:31:26.515 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.515 INFO kablam! 
Sep 04 20:31:26.516 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 04 20:31:26.516 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 04 20:31:26.516 INFO kablam!    |
Sep 04 20:31:26.516 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.516 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.516 INFO kablam!    |
Sep 04 20:31:26.517 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.517 INFO kablam! 
Sep 04 20:31:26.518 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 04 20:31:26.518 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 04 20:31:26.518 INFO kablam!    |
Sep 04 20:31:26.518 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 20:31:26.518 INFO kablam!    |   ^^^^^
Sep 04 20:31:26.518 INFO kablam!    |
Sep 04 20:31:26.518 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:26.519 INFO kablam! 
Sep 04 20:31:26.655 INFO kablam! error: aborting due to 7 previous errors
Sep 04 20:31:26.655 INFO kablam! 
Sep 04 20:31:26.655 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 20:31:26.666 INFO kablam! error: Could not compile `log4rs`.
Sep 04 20:31:26.666 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 20:31:33.638 INFO kablam! error: build failed
Sep 04 20:31:33.640 INFO kablam! su: No module specific data is present
Sep 04 20:31:34.298 INFO running `"docker" "rm" "-f" "cd4e7547cd2eafdef5d19f63dc1bfebc4251b2014c85f084ead0d4616294fbbb"`
Sep 04 20:31:34.446 INFO blam! cd4e7547cd2eafdef5d19f63dc1bfebc4251b2014c85f084ead0d4616294fbbb