Sep 06 08:20:38.187 INFO checking crust-0.31.0 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 08:20:38.187 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 08:20:38.187 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-6/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 08:20:38.391 INFO blam! 0c1400c8edb22240e032bdbcbac6abe9eecbd9190cb9ee3a736a1fbc0687e3b5
Sep 06 08:20:38.393 INFO running `"docker" "start" "-a" "0c1400c8edb22240e032bdbcbac6abe9eecbd9190cb9ee3a736a1fbc0687e3b5"`
Sep 06 08:20:39.161 INFO kablam! usermod: no changes
Sep 06 08:20:39.663 INFO kablam!    Compiling byteorder v1.1.0
Sep 06 08:20:39.666 INFO kablam!    Compiling unwrap v1.2.1
Sep 06 08:20:39.668 INFO kablam!     Checking tiny-keccak v1.3.1
Sep 06 08:20:39.671 INFO kablam!     Checking thread_local v0.3.6
Sep 06 08:20:39.671 INFO kablam!     Checking get_if_addrs v0.4.1
Sep 06 08:20:39.673 INFO kablam!     Checking bytes v0.4.10
Sep 06 08:20:39.674 INFO kablam!    Compiling url v1.5.1
Sep 06 08:20:40.230 INFO kablam!    Compiling tokio-threadpool v0.1.6
Sep 06 08:20:40.364 INFO kablam!     Checking bincode v0.8.0
Sep 06 08:20:40.364 INFO kablam!     Checking config_file_handler v0.11.0
Sep 06 08:20:40.635 INFO kablam!     Checking regex v0.2.11
Sep 06 08:20:42.590 INFO kablam!     Checking log4rs v0.7.0
Sep 06 08:20:44.222 INFO kablam!    Compiling base64 v0.9.2
Sep 06 08:20:45.065 INFO kablam!    Compiling libflate v0.1.16
Sep 06 08:20:45.334 INFO kablam!     Checking hyper v0.10.13
Sep 06 08:20:45.334 INFO kablam!     Checking ws v0.7.3
Sep 06 08:20:47.142 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 06 08:20:47.142 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 06 08:20:47.142 INFO kablam!    |
Sep 06 08:20:47.142 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.142 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.142 INFO kablam!    |
Sep 06 08:20:47.142 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.142 INFO kablam! 
Sep 06 08:20:47.178 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 06 08:20:47.178 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 06 08:20:47.178 INFO kablam!    |
Sep 06 08:20:47.178 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.178 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.178 INFO kablam!    |
Sep 06 08:20:47.178 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.178 INFO kablam! 
Sep 06 08:20:47.178 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 06 08:20:47.178 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 06 08:20:47.178 INFO kablam!    |
Sep 06 08:20:47.178 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.178 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.178 INFO kablam!    |
Sep 06 08:20:47.178 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.178 INFO kablam! 
Sep 06 08:20:47.178 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 06 08:20:47.178 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 06 08:20:47.178 INFO kablam!    |
Sep 06 08:20:47.178 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.178 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.178 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.179 INFO kablam! 
Sep 06 08:20:47.179 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 06 08:20:47.179 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 06 08:20:47.179 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.179 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.179 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.179 INFO kablam! 
Sep 06 08:20:47.179 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 06 08:20:47.179 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 06 08:20:47.179 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.179 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.179 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.179 INFO kablam! 
Sep 06 08:20:47.179 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 06 08:20:47.179 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 06 08:20:47.179 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 06 08:20:47.179 INFO kablam!    |   ^^^^^
Sep 06 08:20:47.179 INFO kablam!    |
Sep 06 08:20:47.179 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 08:20:47.179 INFO kablam! 
Sep 06 08:20:47.308 INFO kablam! error: aborting due to 7 previous errors
Sep 06 08:20:47.308 INFO kablam! 
Sep 06 08:20:47.308 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 06 08:20:47.327 INFO kablam! error: Could not compile `log4rs`.
Sep 06 08:20:47.327 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 08:20:54.589 INFO kablam! error: build failed
Sep 06 08:20:54.590 INFO kablam! su: No module specific data is present
Sep 06 08:20:55.042 INFO running `"docker" "rm" "-f" "0c1400c8edb22240e032bdbcbac6abe9eecbd9190cb9ee3a736a1fbc0687e3b5"`
Sep 06 08:20:55.108 INFO blam! 0c1400c8edb22240e032bdbcbac6abe9eecbd9190cb9ee3a736a1fbc0687e3b5