Sep 06 04:04:29.635 INFO checking maidsafe_utilities-0.14.1 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 06 04:04:29.635 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 06 04:04:29.635 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-6/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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 +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 04:04:29.836 INFO blam! 36442617678bba89a8102266b3701d852c1e7a1fb5af5d3f33ab0a9d9feda8ab
Sep 06 04:04:29.838 INFO running `"docker" "start" "-a" "36442617678bba89a8102266b3701d852c1e7a1fb5af5d3f33ab0a9d9feda8ab"`
Sep 06 04:04:30.837 INFO kablam! usermod: no changes
Sep 06 04:04:30.957 INFO kablam!     Checking log-mdc v0.1.0
Sep 06 04:04:30.959 INFO kablam!     Checking url v1.5.1
Sep 06 04:04:30.959 INFO kablam!     Checking config_file_handler v0.8.3
Sep 06 04:04:30.959 INFO kablam!     Checking serde-value v0.5.2
Sep 06 04:04:31.723 INFO kablam!     Checking log4rs v0.7.0
Sep 06 04:04:32.406 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 04:04:32.406 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 06 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.406 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.406 INFO kablam! 
Sep 06 04:04:32.406 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 04:04:32.406 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 06 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.406 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.406 INFO kablam! 
Sep 06 04:04:32.406 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 04:04:32.406 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 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.406 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.406 INFO kablam! 
Sep 06 04:04:32.406 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 04:04:32.406 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 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.406 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.406 INFO kablam!    |
Sep 06 04:04:32.406 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.406 INFO kablam! 
Sep 06 04:04:32.406 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 04:04:32.407 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 04:04:32.407 INFO kablam!    |
Sep 06 04:04:32.407 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.407 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.407 INFO kablam!    |
Sep 06 04:04:32.407 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.407 INFO kablam! 
Sep 06 04:04:32.407 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 04:04:32.407 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 04:04:32.407 INFO kablam!    |
Sep 06 04:04:32.407 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.407 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.407 INFO kablam!    |
Sep 06 04:04:32.407 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.407 INFO kablam! 
Sep 06 04:04:32.407 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 04:04:32.407 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 06 04:04:32.407 INFO kablam!    |
Sep 06 04:04:32.407 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 06 04:04:32.407 INFO kablam!    |   ^^^^^
Sep 06 04:04:32.407 INFO kablam!    |
Sep 06 04:04:32.407 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 04:04:32.407 INFO kablam! 
Sep 06 04:04:32.494 INFO kablam!     Checking ws v0.7.3
Sep 06 04:04:32.506 INFO kablam! error: aborting due to 7 previous errors
Sep 06 04:04:32.506 INFO kablam! 
Sep 06 04:04:32.506 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 06 04:04:32.513 INFO kablam! error: Could not compile `log4rs`.
Sep 06 04:04:32.513 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 04:04:33.935 INFO kablam! error: build failed
Sep 06 04:04:33.937 INFO kablam! su: No module specific data is present
Sep 06 04:04:34.903 INFO running `"docker" "rm" "-f" "36442617678bba89a8102266b3701d852c1e7a1fb5af5d3f33ab0a9d9feda8ab"`
Sep 06 04:04:35.001 INFO blam! 36442617678bba89a8102266b3701d852c1e7a1fb5af5d3f33ab0a9d9feda8ab