Sep 02 00:06:12.812 INFO checking connectr-1.0.0 against try#aa245a5862056b681d2ccdb178f58891108cd3a6 for pr-53831
Sep 02 00:06:12.812 INFO running: cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets
Sep 02 00:06:12.812 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/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 +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 00:06:12.941 INFO blam! ffd6410255800579f557cec59bc5312d669e6d597ba69b868e237e49d07323bc
Sep 02 00:06:12.943 INFO running `"docker" "start" "-a" "ffd6410255800579f557cec59bc5312d669e6d597ba69b868e237e49d07323bc"`
Sep 02 00:06:13.964 INFO kablam!    Compiling wrapped-vec v0.2.1
Sep 02 00:06:13.968 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 02 00:06:13.968 INFO kablam!     Checking serde-value v0.5.2
Sep 02 00:06:13.968 INFO kablam!     Checking timer v0.2.0
Sep 02 00:06:16.201 INFO kablam!     Checking log4rs v0.8.0
Sep 02 00:06:17.836 INFO kablam!     Checking tokio-udp v0.1.2
Sep 02 00:06:17.837 INFO kablam!     Checking tokio-uds v0.2.1
Sep 02 00:06:17.837 INFO kablam!     Checking tokio-tcp v0.1.1
Sep 02 00:06:20.141 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 02 00:06:20.141 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 02 00:06:20.141 INFO kablam!    |
Sep 02 00:06:20.141 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.141 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.141 INFO kablam!    |
Sep 02 00:06:20.141 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.141 INFO kablam! 
Sep 02 00:06:20.142 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 02 00:06:20.142 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 02 00:06:20.142 INFO kablam!    |
Sep 02 00:06:20.142 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.142 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.142 INFO kablam!    |
Sep 02 00:06:20.142 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.142 INFO kablam! 
Sep 02 00:06:20.143 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 02 00:06:20.143 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 02 00:06:20.143 INFO kablam!    |
Sep 02 00:06:20.143 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.143 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.143 INFO kablam!    |
Sep 02 00:06:20.143 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.143 INFO kablam! 
Sep 02 00:06:20.143 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 02 00:06:20.143 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 02 00:06:20.143 INFO kablam!    |
Sep 02 00:06:20.143 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.143 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.143 INFO kablam!    |
Sep 02 00:06:20.143 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.143 INFO kablam! 
Sep 02 00:06:20.143 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 02 00:06:20.144 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 02 00:06:20.144 INFO kablam!    |
Sep 02 00:06:20.144 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.144 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.144 INFO kablam!    |
Sep 02 00:06:20.144 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.144 INFO kablam! 
Sep 02 00:06:20.145 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 02 00:06:20.145 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 02 00:06:20.145 INFO kablam!    |
Sep 02 00:06:20.145 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.145 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.145 INFO kablam!    |
Sep 02 00:06:20.145 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.145 INFO kablam! 
Sep 02 00:06:20.145 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 02 00:06:20.145 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 02 00:06:20.145 INFO kablam!    |
Sep 02 00:06:20.145 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 02 00:06:20.145 INFO kablam!    |   ^^^^^
Sep 02 00:06:20.145 INFO kablam!    |
Sep 02 00:06:20.145 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:06:20.145 INFO kablam! 
Sep 02 00:06:20.443 INFO kablam! error: aborting due to 7 previous errors
Sep 02 00:06:20.445 INFO kablam! 
Sep 02 00:06:20.445 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 02 00:06:20.468 INFO kablam! error: Could not compile `log4rs`.
Sep 02 00:06:20.468 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 02 00:06:22.520 INFO kablam! error: build failed
Sep 02 00:06:22.521 INFO kablam! su: No module specific data is present
Sep 02 00:06:23.066 INFO running `"docker" "rm" "-f" "ffd6410255800579f557cec59bc5312d669e6d597ba69b868e237e49d07323bc"`
Sep 02 00:06:23.206 INFO blam! ffd6410255800579f557cec59bc5312d669e6d597ba69b868e237e49d07323bc