Aug 30 04:21:41.304 INFO checking scavenger-1.0.0 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 04:21:41.304 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 04:21:41.305 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-3/try#2d477f9981361618ac78253c28051a66b6cea125:/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 +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 04:21:41.454 INFO blam! f99624e91ee117fd11a1b2b4bc752e2f2c2d7c6a1ee264415e5232c80dd69098
Aug 30 04:21:41.455 INFO running `"docker" "start" "-a" "f99624e91ee117fd11a1b2b4bc752e2f2c2d7c6a1ee264415e5232c80dd69098"`
Aug 30 04:21:42.272 INFO kablam!    Compiling sys-info v0.5.6
Aug 30 04:21:42.272 INFO kablam!    Compiling scavenger v1.0.0 (file:///source)
Aug 30 04:21:42.275 INFO kablam!     Checking core_affinity v0.5.9
Aug 30 04:21:42.276 INFO kablam!     Checking clap v2.30.0
Aug 30 04:21:42.276 INFO kablam!     Checking log v0.4.4
Aug 30 04:21:42.279 INFO kablam!     Checking ct-logs v0.4.0
Aug 30 04:21:42.279 INFO kablam!     Checking stopwatch v0.0.7
Aug 30 04:21:45.743 INFO kablam!     Checking mio v0.6.15
Aug 30 04:21:45.744 INFO kablam!     Checking tokio-io v0.1.8
Aug 30 04:21:45.744 INFO kablam!     Checking tokio-threadpool v0.1.6
Aug 30 04:21:45.744 INFO kablam!     Checking rustls v0.13.1
Aug 30 04:21:45.744 INFO kablam!     Checking want v0.0.6
Aug 30 04:21:48.517 INFO kablam!     Checking log4rs v0.8.0
Aug 30 04:21:53.111 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)
Aug 30 04:21:53.111 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Aug 30 04:21:53.111 INFO kablam!    |
Aug 30 04:21:53.111 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.111 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.136 INFO kablam!    |
Aug 30 04:21:53.137 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.137 INFO kablam! 
Aug 30 04:21:53.137 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)
Aug 30 04:21:53.137 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Aug 30 04:21:53.137 INFO kablam!    |
Aug 30 04:21:53.137 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.137 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.137 INFO kablam!    |
Aug 30 04:21:53.137 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.137 INFO kablam! 
Aug 30 04:21:53.138 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)
Aug 30 04:21:53.138 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Aug 30 04:21:53.138 INFO kablam!    |
Aug 30 04:21:53.138 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.138 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.138 INFO kablam!    |
Aug 30 04:21:53.138 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.138 INFO kablam! 
Aug 30 04:21:53.138 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)
Aug 30 04:21:53.138 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
Aug 30 04:21:53.138 INFO kablam!    |
Aug 30 04:21:53.138 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.139 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.139 INFO kablam!    |
Aug 30 04:21:53.139 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.139 INFO kablam! 
Aug 30 04:21:53.139 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)
Aug 30 04:21:53.139 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Aug 30 04:21:53.139 INFO kablam!    |
Aug 30 04:21:53.139 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.139 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.139 INFO kablam!    |
Aug 30 04:21:53.139 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.139 INFO kablam! 
Aug 30 04:21:53.139 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)
Aug 30 04:21:53.139 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Aug 30 04:21:53.139 INFO kablam!    |
Aug 30 04:21:53.139 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.139 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.144 INFO kablam!    |
Aug 30 04:21:53.144 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.144 INFO kablam! 
Aug 30 04:21:53.145 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)
Aug 30 04:21:53.145 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Aug 30 04:21:53.145 INFO kablam!    |
Aug 30 04:21:53.145 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 30 04:21:53.145 INFO kablam!    |   ^^^^^
Aug 30 04:21:53.145 INFO kablam!    |
Aug 30 04:21:53.145 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 04:21:53.145 INFO kablam! 
Aug 30 04:21:53.529 INFO kablam! error: aborting due to 7 previous errors
Aug 30 04:21:53.530 INFO kablam! 
Aug 30 04:21:53.530 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 30 04:21:53.573 INFO kablam! error: Could not compile `log4rs`.
Aug 30 04:21:53.574 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 04:22:01.663 INFO kablam! error: build failed
Aug 30 04:22:01.665 INFO kablam! su: No module specific data is present
Aug 30 04:22:02.126 INFO running `"docker" "rm" "-f" "f99624e91ee117fd11a1b2b4bc752e2f2c2d7c6a1ee264415e5232c80dd69098"`
Aug 30 04:22:02.261 INFO blam! f99624e91ee117fd11a1b2b4bc752e2f2c2d7c6a1ee264415e5232c80dd69098