Sep 04 23:52:25.442 INFO checking connectr-1.0.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 23:52:25.442 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 23:52:25.442 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-3/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 23:52:25.679 INFO blam! da8fdd69e52cc97e0561f5dffe5b4800597d66c441d0913ec14c062159dff569
Sep 04 23:52:25.680 INFO running `"docker" "start" "-a" "da8fdd69e52cc97e0561f5dffe5b4800597d66c441d0913ec14c062159dff569"`
Sep 04 23:52:26.948 INFO kablam!    Compiling rubrail v0.7.0
Sep 04 23:52:26.966 INFO kablam!    Compiling wrapped-vec v0.2.1
Sep 04 23:52:26.981 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 04 23:52:26.981 INFO kablam!     Checking serde-value v0.5.2
Sep 04 23:52:26.981 INFO kablam!     Checking timer v0.2.0
Sep 04 23:52:29.660 INFO kablam!     Checking log4rs v0.8.0
Sep 04 23:52:30.924 INFO kablam!     Checking tokio-udp v0.1.2
Sep 04 23:52:30.926 INFO kablam!     Checking tokio-uds v0.2.1
Sep 04 23:52:30.929 INFO kablam!     Checking tokio-tcp v0.1.1
Sep 04 23:52:32.361 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 23:52:32.361 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 04 23:52:32.361 INFO kablam!    |
Sep 04 23:52:32.361 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.361 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.362 INFO kablam!    |
Sep 04 23:52:32.362 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.362 INFO kablam! 
Sep 04 23:52:32.363 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 23:52:32.363 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 04 23:52:32.363 INFO kablam!    |
Sep 04 23:52:32.363 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.363 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.364 INFO kablam!    |
Sep 04 23:52:32.364 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.364 INFO kablam! 
Sep 04 23:52:32.365 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 23:52:32.365 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 04 23:52:32.365 INFO kablam!    |
Sep 04 23:52:32.365 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.365 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.365 INFO kablam!    |
Sep 04 23:52:32.366 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.366 INFO kablam! 
Sep 04 23:52:32.366 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 23:52:32.367 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 04 23:52:32.367 INFO kablam!    |
Sep 04 23:52:32.367 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.367 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.367 INFO kablam!    |
Sep 04 23:52:32.367 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.368 INFO kablam! 
Sep 04 23:52:32.368 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 23:52:32.368 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 04 23:52:32.368 INFO kablam!    |
Sep 04 23:52:32.368 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.368 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.369 INFO kablam!    |
Sep 04 23:52:32.369 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.369 INFO kablam! 
Sep 04 23:52:32.370 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 23:52:32.370 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 04 23:52:32.370 INFO kablam!    |
Sep 04 23:52:32.370 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.370 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.370 INFO kablam!    |
Sep 04 23:52:32.371 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.371 INFO kablam! 
Sep 04 23:52:32.372 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 23:52:32.372 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 04 23:52:32.372 INFO kablam!    |
Sep 04 23:52:32.372 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 23:52:32.372 INFO kablam!    |   ^^^^^
Sep 04 23:52:32.372 INFO kablam!    |
Sep 04 23:52:32.372 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:32.373 INFO kablam! 
Sep 04 23:52:32.479 INFO kablam! error: aborting due to 7 previous errors
Sep 04 23:52:32.480 INFO kablam! 
Sep 04 23:52:32.480 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 23:52:32.489 INFO kablam! error: Could not compile `log4rs`.
Sep 04 23:52:32.489 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 23:52:35.587 INFO kablam! error: build failed
Sep 04 23:52:35.589 INFO kablam! su: No module specific data is present
Sep 04 23:52:36.158 INFO running `"docker" "rm" "-f" "da8fdd69e52cc97e0561f5dffe5b4800597d66c441d0913ec14c062159dff569"`
Sep 04 23:52:36.303 INFO blam! da8fdd69e52cc97e0561f5dffe5b4800597d66c441d0913ec14c062159dff569