Sep 10 20:40:40.055 INFO checking crust-0.31.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 20:40:40.055 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 20:40:40.055 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 20:40:40.224 INFO blam! fb3ab2e0bc0e8ca8ed8d96c53e762a534bb2c925efc7a564eec6f89f620dca6b
Sep 10 20:40:40.226 INFO running `"docker" "start" "-a" "fb3ab2e0bc0e8ca8ed8d96c53e762a534bb2c925efc7a564eec6f89f620dca6b"`
Sep 10 20:40:41.461 INFO kablam! usermod: no changes
Sep 10 20:40:42.066 INFO kablam!    Compiling try-lock v0.1.0
Sep 10 20:40:42.066 INFO kablam!    Compiling scoped-tls v0.1.2
Sep 10 20:40:42.087 INFO kablam!    Compiling unwrap v1.2.1
Sep 10 20:40:42.090 INFO kablam!    Compiling encoding_rs v0.8.6
Sep 10 20:40:42.091 INFO kablam!    Compiling relay v0.1.1
Sep 10 20:40:42.091 INFO kablam!    Compiling tokio-service v0.1.0
Sep 10 20:40:42.092 INFO kablam!    Compiling base64 v0.9.2
Sep 10 20:40:42.978 INFO kablam!     Checking thread_local v0.3.6
Sep 10 20:40:43.626 INFO kablam!    Compiling bytes v0.4.10
Sep 10 20:40:44.212 INFO kablam!    Compiling crossbeam-epoch v0.5.2
Sep 10 20:40:44.574 INFO kablam!    Compiling mio v0.6.16
Sep 10 20:40:45.080 INFO kablam!    Compiling unicase v2.1.0
Sep 10 20:40:45.338 INFO kablam!    Compiling want v0.0.4
Sep 10 20:40:45.380 INFO kablam!    Compiling url v1.5.1
Sep 10 20:40:50.962 INFO kablam!     Checking regex v0.2.11
Sep 10 20:40:51.126 INFO kablam!     Checking clap v2.25.1
Sep 10 20:40:51.216 INFO kablam!    Compiling openssl v0.9.24
Sep 10 20:40:53.762 INFO kablam!    Compiling libflate v0.1.16
Sep 10 20:40:57.812 INFO kablam!     Checking config_file_handler v0.11.0
Sep 10 20:40:57.838 INFO kablam!    Compiling crossbeam-deque v0.6.1
Sep 10 20:40:57.845 INFO kablam!    Compiling phf v0.7.23
Sep 10 20:40:57.869 INFO kablam!    Compiling tokio-io v0.1.8
Sep 10 20:40:58.567 INFO kablam!    Compiling flate2 v1.0.2
Sep 10 20:40:58.810 INFO kablam!    Compiling mime v0.3.9
Sep 10 20:41:00.561 INFO kablam!    Compiling mio-uds v0.6.7
Sep 10 20:41:01.861 INFO kablam!     Checking igd v0.6.0
Sep 10 20:41:01.999 INFO kablam!    Compiling serde_urlencoded v0.5.3
Sep 10 20:41:01.999 INFO kablam!    Compiling tokio-threadpool v0.1.6
Sep 10 20:41:02.014 INFO kablam!    Compiling tokio-codec v0.1.0
Sep 10 20:41:02.086 INFO kablam!    Compiling zip v0.3.3
Sep 10 20:41:02.276 INFO kablam!    Compiling tokio-reactor v0.1.5
Sep 10 20:41:03.578 INFO kablam!     Checking log4rs v0.7.0
Sep 10 20:41:04.403 INFO kablam!    Compiling native-tls v0.1.5
Sep 10 20:41:04.440 INFO kablam!    Compiling mime_guess v2.0.0-alpha.6
Sep 10 20:41:07.447 INFO kablam!    Compiling tokio-udp v0.1.2
Sep 10 20:41:07.733 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 10 20:41:07.733 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 10 20:41:07.733 INFO kablam!    |
Sep 10 20:41:07.733 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.733 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.746 INFO kablam! 
Sep 10 20:41:07.746 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 10 20:41:07.746 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.746 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.746 INFO kablam! 
Sep 10 20:41:07.746 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 10 20:41:07.746 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 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.746 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.746 INFO kablam! 
Sep 10 20:41:07.746 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 10 20:41:07.746 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 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.746 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.746 INFO kablam! 
Sep 10 20:41:07.746 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 10 20:41:07.746 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 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.746 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.746 INFO kablam! 
Sep 10 20:41:07.746 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 10 20:41:07.746 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.746 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.746 INFO kablam! 
Sep 10 20:41:07.746 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 10 20:41:07.746 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.746 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 10 20:41:07.746 INFO kablam!    |   ^^^^^
Sep 10 20:41:07.746 INFO kablam!    |
Sep 10 20:41:07.747 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:41:07.747 INFO kablam! 
Sep 10 20:41:07.862 INFO kablam! error: aborting due to 7 previous errors
Sep 10 20:41:07.862 INFO kablam! 
Sep 10 20:41:07.862 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 20:41:07.902 INFO kablam! error: Could not compile `log4rs`.
Sep 10 20:41:07.902 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 20:41:15.243 INFO kablam! error: build failed
Sep 10 20:41:15.245 INFO kablam! su: No module specific data is present
Sep 10 20:41:16.143 INFO running `"docker" "rm" "-f" "fb3ab2e0bc0e8ca8ed8d96c53e762a534bb2c925efc7a564eec6f89f620dca6b"`
Sep 10 20:41:16.216 INFO blam! fb3ab2e0bc0e8ca8ed8d96c53e762a534bb2c925efc7a564eec6f89f620dca6b