Sep 01 20:53:58.792 INFO checking toucHNews-0.4.0 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 01 20:53:58.792 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 01 20:53:58.792 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-2/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 20:53:58.937 INFO blam! aaa3508d7b55f9033cf8eeafd39c11756455b057529685c2d51a8170d4b258c9
Sep 01 20:53:58.939 INFO running `"docker" "start" "-a" "aaa3508d7b55f9033cf8eeafd39c11756455b057529685c2d51a8170d4b258c9"`
Sep 01 20:53:59.950 INFO kablam!    Compiling rubrail v0.7.0
Sep 01 20:53:59.953 INFO kablam!     Checking log v0.4.4
Sep 01 20:53:59.955 INFO kablam!     Checking serde-value v0.5.2
Sep 01 20:54:00.840 INFO kablam!     Checking mio v0.6.15
Sep 01 20:54:00.844 INFO kablam!     Checking tokio-io v0.1.8
Sep 01 20:54:00.853 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 01 20:54:00.855 INFO kablam!     Checking log v0.3.9
Sep 01 20:54:00.856 INFO kablam!     Checking want v0.0.4
Sep 01 20:54:01.551 INFO kablam!     Checking log4rs v0.8.0
Sep 01 20:54:03.326 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 20:54:03.326 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 01 20:54:03.326 INFO kablam!    |
Sep 01 20:54:03.326 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.326 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.326 INFO kablam!    |
Sep 01 20:54:03.326 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.326 INFO kablam! 
Sep 01 20:54:03.327 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 20:54:03.327 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 01 20:54:03.327 INFO kablam!    |
Sep 01 20:54:03.327 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.327 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.327 INFO kablam!    |
Sep 01 20:54:03.327 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.328 INFO kablam! 
Sep 01 20:54:03.328 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 20:54:03.328 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 01 20:54:03.328 INFO kablam!    |
Sep 01 20:54:03.328 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.328 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.328 INFO kablam!    |
Sep 01 20:54:03.328 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.328 INFO kablam! 
Sep 01 20:54:03.329 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 20:54:03.329 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
Sep 01 20:54:03.329 INFO kablam!    |
Sep 01 20:54:03.329 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.329 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.329 INFO kablam!    |
Sep 01 20:54:03.329 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.329 INFO kablam! 
Sep 01 20:54:03.330 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 20:54:03.330 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 01 20:54:03.330 INFO kablam!    |
Sep 01 20:54:03.330 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.330 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.330 INFO kablam!    |
Sep 01 20:54:03.330 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.330 INFO kablam! 
Sep 01 20:54:03.331 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 20:54:03.331 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 01 20:54:03.331 INFO kablam!    |
Sep 01 20:54:03.331 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.331 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.331 INFO kablam!    |
Sep 01 20:54:03.331 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.331 INFO kablam! 
Sep 01 20:54:03.332 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 20:54:03.332 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 01 20:54:03.332 INFO kablam!    |
Sep 01 20:54:03.332 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 01 20:54:03.332 INFO kablam!    |   ^^^^^
Sep 01 20:54:03.332 INFO kablam!    |
Sep 01 20:54:03.332 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 20:54:03.332 INFO kablam! 
Sep 01 20:54:03.464 INFO kablam! error: aborting due to 7 previous errors
Sep 01 20:54:03.464 INFO kablam! 
Sep 01 20:54:03.464 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 01 20:54:03.476 INFO kablam! error: Could not compile `log4rs`.
Sep 01 20:54:03.477 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 20:54:05.896 INFO kablam! error: build failed
Sep 01 20:54:05.897 INFO kablam! su: No module specific data is present
Sep 01 20:54:06.437 INFO running `"docker" "rm" "-f" "aaa3508d7b55f9033cf8eeafd39c11756455b057529685c2d51a8170d4b258c9"`
Sep 01 20:54:06.597 INFO blam! aaa3508d7b55f9033cf8eeafd39c11756455b057529685c2d51a8170d4b258c9