Sep 01 09:19:05.522 INFO checking rincon_session-0.1.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 09:19:05.522 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 09:19:05.522 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/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 09:19:05.771 INFO blam! f90979765469afad76a242e0cd975649b7ccd2ac06bbd21c504b6418eb8da4ff
Sep 01 09:19:05.773 INFO running `"docker" "start" "-a" "f90979765469afad76a242e0cd975649b7ccd2ac06bbd21c504b6418eb8da4ff"`
Sep 01 09:19:06.994 INFO kablam!     Checking galvanic-assert v0.8.7
Sep 01 09:19:07.005 INFO kablam!     Checking mio v0.6.15
Sep 01 09:19:07.005 INFO kablam!     Checking tokio-io v0.1.8
Sep 01 09:19:07.005 INFO kablam!     Checking log v0.3.9
Sep 01 09:19:07.006 INFO kablam!     Checking want v0.0.4
Sep 01 09:19:07.006 INFO kablam!    Compiling derive-error-chain v0.11.2
Sep 01 09:19:07.014 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 01 09:19:07.014 INFO kablam!     Checking log4rs v0.8.0
Sep 01 09:19:10.017 INFO kablam!     Checking rincon_core v0.1.0
Sep 01 09:19:12.326 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 09:19:12.326 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 01 09:19:12.327 INFO kablam!    |
Sep 01 09:19:12.327 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.327 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.348 INFO kablam!    |
Sep 01 09:19:12.348 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.349 INFO kablam! 
Sep 01 09:19:12.349 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 09:19:12.349 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 01 09:19:12.349 INFO kablam!    |
Sep 01 09:19:12.349 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.349 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.349 INFO kablam!    |
Sep 01 09:19:12.349 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.349 INFO kablam! 
Sep 01 09:19:12.349 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 09:19:12.349 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 09:19:12.350 INFO kablam!    |
Sep 01 09:19:12.350 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.350 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.350 INFO kablam!    |
Sep 01 09:19:12.350 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.350 INFO kablam! 
Sep 01 09:19:12.351 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 09:19:12.351 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 09:19:12.351 INFO kablam!    |
Sep 01 09:19:12.351 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.351 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.351 INFO kablam!    |
Sep 01 09:19:12.351 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.351 INFO kablam! 
Sep 01 09:19:12.351 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 09:19:12.351 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 09:19:12.351 INFO kablam!    |
Sep 01 09:19:12.351 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.351 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.351 INFO kablam!    |
Sep 01 09:19:12.351 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.351 INFO kablam! 
Sep 01 09:19:12.351 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 09:19:12.351 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 09:19:12.351 INFO kablam!    |
Sep 01 09:19:12.351 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.351 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.351 INFO kablam!    |
Sep 01 09:19:12.352 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.352 INFO kablam! 
Sep 01 09:19:12.352 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 09:19:12.352 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 01 09:19:12.352 INFO kablam!    |
Sep 01 09:19:12.352 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 01 09:19:12.352 INFO kablam!    |   ^^^^^
Sep 01 09:19:12.352 INFO kablam!    |
Sep 01 09:19:12.352 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 09:19:12.352 INFO kablam! 
Sep 01 09:19:12.827 INFO kablam! error: aborting due to 7 previous errors
Sep 01 09:19:12.827 INFO kablam! 
Sep 01 09:19:12.827 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 01 09:19:12.840 INFO kablam! error: Could not compile `log4rs`.
Sep 01 09:19:12.841 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 09:19:22.603 INFO kablam! error: build failed
Sep 01 09:19:22.604 INFO kablam! su: No module specific data is present
Sep 01 09:19:23.167 INFO running `"docker" "rm" "-f" "f90979765469afad76a242e0cd975649b7ccd2ac06bbd21c504b6418eb8da4ff"`
Sep 01 09:19:23.273 INFO blam! f90979765469afad76a242e0cd975649b7ccd2ac06bbd21c504b6418eb8da4ff