Sep 10 05:39:50.600 INFO checking AlexW-GH/rust8 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 05:39:50.600 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 05:39:50.601 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-7/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 05:39:50.819 INFO blam! 66f864f33f2a7b347366206c40923cd0ce3f55101a07121fc4ae9e32c05d3898
Sep 10 05:39:50.821 INFO running `"docker" "start" "-a" "66f864f33f2a7b347366206c40923cd0ce3f55101a07121fc4ae9e32c05d3898"`
Sep 10 05:39:51.897 INFO kablam! usermod: no changes
Sep 10 05:39:52.330 INFO kablam!     Checking piston-float v0.3.0
Sep 10 05:39:52.358 INFO kablam!     Checking serde v0.9.11
Sep 10 05:39:52.367 INFO kablam!     Checking piston-shaders_graphics2d v0.3.1
Sep 10 05:39:52.370 INFO kablam!    Compiling miniz-sys v0.1.9
Sep 10 05:39:52.370 INFO kablam!     Checking nodrop v0.1.9
Sep 10 05:39:52.370 INFO kablam!     Checking unsafe-any v0.4.1
Sep 10 05:39:52.370 INFO kablam!     Checking humantime v1.0.0
Sep 10 05:39:52.370 INFO kablam!    Compiling phf_generator v0.7.21
Sep 10 05:39:53.146 INFO kablam!    Compiling syn v0.11.9
Sep 10 05:39:53.548 INFO kablam!     Checking ordered-float v0.4.0
Sep 10 05:39:53.746 INFO kablam!     Checking piston-viewport v0.3.0
Sep 10 05:39:53.774 INFO kablam!     Checking vecmath v0.3.0
Sep 10 05:39:54.259 INFO kablam!    Compiling gl v0.6.1
Sep 10 05:39:54.922 INFO kablam!     Checking arrayvec v0.3.21
Sep 10 05:39:55.154 INFO kablam!     Checking typemap v0.3.3
Sep 10 05:39:55.424 INFO kablam!    Compiling phf_codegen v0.7.21
Sep 10 05:39:56.602 INFO kablam!     Checking chrono v0.3.0
Sep 10 05:39:56.755 INFO kablam!     Checking pistoncore-input v0.17.1
Sep 10 05:39:57.925 INFO kablam!    Compiling target_build_utils v0.3.0
Sep 10 05:39:58.122 INFO kablam!     Checking piston2d-graphics v0.21.1
Sep 10 05:39:59.730 INFO kablam!     Checking rusttype v0.2.1
Sep 10 05:40:04.595 INFO kablam!     Checking flate2 v0.2.17
Sep 10 05:40:04.743 INFO kablam!     Checking pistoncore-window v0.26.2
Sep 10 05:40:12.677 INFO kablam!     Checking pistoncore-event_loop v0.31.4
Sep 10 05:40:13.090 INFO kablam!    Compiling serde_codegen_internals v0.14.1
Sep 10 05:40:13.826 INFO kablam!     Checking piston v0.31.4
Sep 10 05:40:17.267 INFO kablam!    Compiling serde_derive v0.9.11
Sep 10 05:40:24.723 INFO kablam!     Checking serde_json v0.9.9
Sep 10 05:40:24.723 INFO kablam!     Checking serde-value v0.4.0
Sep 10 05:40:27.237 INFO kablam!     Checking serde_yaml v0.6.2
Sep 10 05:40:29.009 INFO kablam!     Checking log4rs v0.6.2
Sep 10 05:40:29.389 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 05:40:29.389 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/file.rs:25:3
Sep 10 05:40:29.389 INFO kablam!    |
Sep 10 05:40:29.389 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.389 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.389 INFO kablam!    |
Sep 10 05:40:29.389 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.389 INFO kablam! 
Sep 10 05:40:29.389 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 05:40:29.389 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/console.rs:24:3
Sep 10 05:40:29.389 INFO kablam!    |
Sep 10 05:40:29.389 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.390 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.390 INFO kablam! 
Sep 10 05:40:29.390 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 05:40:29.390 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.390 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.390 INFO kablam! 
Sep 10 05:40:29.390 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 05:40:29.390 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.390 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.390 INFO kablam! 
Sep 10 05:40:29.390 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 05:40:29.390 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.390 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.390 INFO kablam! 
Sep 10 05:40:29.390 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 05:40:29.390 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.390 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.390 INFO kablam! 
Sep 10 05:40:29.390 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 05:40:29.390 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/mod.rs:46:3
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 10 05:40:29.390 INFO kablam!    |   ^^^^^
Sep 10 05:40:29.390 INFO kablam!    |
Sep 10 05:40:29.390 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 05:40:29.390 INFO kablam! 
Sep 10 05:40:29.433 INFO kablam! error: aborting due to 7 previous errors
Sep 10 05:40:29.433 INFO kablam! 
Sep 10 05:40:29.433 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 05:40:29.433 INFO kablam! error: Could not compile `log4rs`.
Sep 10 05:40:29.433 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 05:40:52.298 INFO kablam! error: build failed
Sep 10 05:40:52.300 INFO kablam! su: No module specific data is present
Sep 10 05:40:53.883 INFO running `"docker" "rm" "-f" "66f864f33f2a7b347366206c40923cd0ce3f55101a07121fc4ae9e32c05d3898"`
Sep 10 05:40:53.988 INFO blam! 66f864f33f2a7b347366206c40923cd0ce3f55101a07121fc4ae9e32c05d3898