Sep 02 00:56:02.278 INFO checking safe_core-0.31.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 02 00:56:02.278 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 00:56:02.278 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-1/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 02 00:56:02.506 INFO blam! 3845f7b7df7c04dc944ed64e9e862629cfda559380aa016599fbba57952e13d0
Sep 02 00:56:02.509 INFO running `"docker" "start" "-a" "3845f7b7df7c04dc944ed64e9e862629cfda559380aa016599fbba57952e13d0"`
Sep 02 00:56:03.884 INFO kablam!     Checking thread_local v0.3.6
Sep 02 00:56:03.890 INFO kablam!    Compiling brotli-sys v0.3.0
Sep 02 00:56:03.910 INFO kablam!    Compiling walkdir v2.0.1
Sep 02 00:56:03.931 INFO kablam!     Checking base64 v0.9.2
Sep 02 00:56:03.951 INFO kablam!     Checking combine v2.5.2
Sep 02 00:56:04.030 INFO kablam!     Checking tokio-io v0.1.8
Sep 02 00:56:04.030 INFO kablam!     Checking crossbeam-deque v0.6.1
Sep 02 00:56:07.482 INFO kablam!     Checking chrono v0.4.6
Sep 02 00:56:07.993 INFO kablam!     Checking resource_proof v0.5.0
Sep 02 00:56:08.591 INFO kablam!     Checking regex v0.2.11
Sep 02 00:56:08.870 INFO kablam!    Compiling flate2 v1.0.2
Sep 02 00:56:10.487 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 02 00:56:15.411 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 02 00:56:15.547 INFO kablam!     Checking tokio-codec v0.1.0
Sep 02 00:56:19.279 INFO kablam!     Checking log4rs v0.7.0
Sep 02 00:56:22.530 INFO kablam!    Compiling jni v0.10.1
Sep 02 00:56:23.449 INFO kablam!    Compiling zip v0.2.8
Sep 02 00:56:24.321 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 00:56:24.321 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 02 00:56:24.321 INFO kablam!    |
Sep 02 00:56:24.321 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.321 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.321 INFO kablam!    |
Sep 02 00:56:24.322 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.322 INFO kablam! 
Sep 02 00:56:24.323 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 00:56:24.323 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 02 00:56:24.323 INFO kablam!    |
Sep 02 00:56:24.323 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.323 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.324 INFO kablam!    |
Sep 02 00:56:24.324 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.325 INFO kablam! 
Sep 02 00:56:24.325 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 00:56:24.325 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 02 00:56:24.325 INFO kablam!    |
Sep 02 00:56:24.325 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.325 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.330 INFO kablam!    |
Sep 02 00:56:24.331 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.331 INFO kablam! 
Sep 02 00:56:24.332 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 00:56:24.332 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 02 00:56:24.332 INFO kablam!    |
Sep 02 00:56:24.332 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.332 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.333 INFO kablam!    |
Sep 02 00:56:24.333 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.334 INFO kablam! 
Sep 02 00:56:24.334 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 00:56:24.334 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 02 00:56:24.334 INFO kablam!    |
Sep 02 00:56:24.335 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.335 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.335 INFO kablam!    |
Sep 02 00:56:24.336 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.336 INFO kablam! 
Sep 02 00:56:24.337 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 00:56:24.337 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 02 00:56:24.337 INFO kablam!    |
Sep 02 00:56:24.337 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.337 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.338 INFO kablam!    |
Sep 02 00:56:24.338 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.338 INFO kablam! 
Sep 02 00:56:24.339 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 00:56:24.339 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 02 00:56:24.339 INFO kablam!    |
Sep 02 00:56:24.339 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 02 00:56:24.339 INFO kablam!    |   ^^^^^
Sep 02 00:56:24.341 INFO kablam!    |
Sep 02 00:56:24.341 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:56:24.342 INFO kablam! 
Sep 02 00:56:24.794 INFO kablam! error: aborting due to 7 previous errors
Sep 02 00:56:24.810 INFO kablam! 
Sep 02 00:56:24.811 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 02 00:56:24.847 INFO kablam! error: Could not compile `log4rs`.
Sep 02 00:56:24.848 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 02 00:56:31.992 INFO kablam! error: build failed
Sep 02 00:56:31.995 INFO kablam! su: No module specific data is present
Sep 02 00:56:32.497 INFO running `"docker" "rm" "-f" "3845f7b7df7c04dc944ed64e9e862629cfda559380aa016599fbba57952e13d0"`
Sep 02 00:56:32.659 INFO blam! 3845f7b7df7c04dc944ed64e9e862629cfda559380aa016599fbba57952e13d0