Sep 04 20:31:08.681 INFO checking crust-0.31.0 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 20:31:08.681 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 20:31:08.681 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 20:31:08.830 INFO blam! 3c6e09f3bd5d67ee7ad0a1ce60f992f0a54cec3c7fd47431469542243ae8eb68
Sep 04 20:31:08.832 INFO running `"docker" "start" "-a" "3c6e09f3bd5d67ee7ad0a1ce60f992f0a54cec3c7fd47431469542243ae8eb68"`
Sep 04 20:31:10.118 INFO kablam!    Compiling byteorder v1.1.0
Sep 04 20:31:10.127 INFO kablam!    Compiling unwrap v1.2.1
Sep 04 20:31:10.150 INFO kablam!     Checking c_linked_list v1.1.1
Sep 04 20:31:10.174 INFO kablam!     Checking bytes v0.4.9
Sep 04 20:31:10.177 INFO kablam!     Checking xmltree v0.3.2
Sep 04 20:31:10.181 INFO kablam!    Compiling url v1.5.1
Sep 04 20:31:10.190 INFO kablam!    Compiling tokio-threadpool v0.1.6
Sep 04 20:31:11.840 INFO kablam!     Checking bincode v0.8.0
Sep 04 20:31:12.250 INFO kablam!     Checking hyper v0.10.13
Sep 04 20:31:13.766 INFO kablam!     Checking config_file_handler v0.11.0
Sep 04 20:31:14.349 INFO kablam!     Checking get_if_addrs v0.4.1
Sep 04 20:31:16.839 INFO kablam!    Compiling base64 v0.9.2
Sep 04 20:31:18.213 INFO kablam!    Compiling libflate v0.1.16
Sep 04 20:31:18.259 INFO kablam!     Checking log4rs v0.7.0
Sep 04 20:31:18.626 INFO kablam!     Checking ws v0.7.3
Sep 04 20:31:24.423 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 04 20:31:24.423 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 04 20:31:24.423 INFO kablam!    |
Sep 04 20:31:24.424 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.424 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.424 INFO kablam!    |
Sep 04 20:31:24.424 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.424 INFO kablam! 
Sep 04 20:31:24.425 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 04 20:31:24.425 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 04 20:31:24.425 INFO kablam!    |
Sep 04 20:31:24.425 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.425 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.425 INFO kablam!    |
Sep 04 20:31:24.425 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.425 INFO kablam! 
Sep 04 20:31:24.425 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 04 20:31:24.425 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 04 20:31:24.425 INFO kablam!    |
Sep 04 20:31:24.425 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.425 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.425 INFO kablam!    |
Sep 04 20:31:24.425 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.425 INFO kablam! 
Sep 04 20:31:24.425 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 04 20:31:24.426 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 04 20:31:24.426 INFO kablam!    |
Sep 04 20:31:24.426 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.426 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.426 INFO kablam!    |
Sep 04 20:31:24.426 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.426 INFO kablam! 
Sep 04 20:31:24.426 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 04 20:31:24.426 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 04 20:31:24.426 INFO kablam!    |
Sep 04 20:31:24.426 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.426 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.426 INFO kablam!    |
Sep 04 20:31:24.426 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.426 INFO kablam! 
Sep 04 20:31:24.426 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 04 20:31:24.426 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 04 20:31:24.426 INFO kablam!    |
Sep 04 20:31:24.426 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.426 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.426 INFO kablam!    |
Sep 04 20:31:24.426 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.426 INFO kablam! 
Sep 04 20:31:24.428 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 04 20:31:24.428 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 04 20:31:24.428 INFO kablam!    |
Sep 04 20:31:24.428 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 20:31:24.428 INFO kablam!    |   ^^^^^
Sep 04 20:31:24.428 INFO kablam!    |
Sep 04 20:31:24.429 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 20:31:24.429 INFO kablam! 
Sep 04 20:31:24.839 INFO kablam! error: aborting due to 7 previous errors
Sep 04 20:31:24.839 INFO kablam! 
Sep 04 20:31:24.839 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 20:31:24.867 INFO kablam! error: Could not compile `log4rs`.
Sep 04 20:31:24.867 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 20:31:32.168 INFO kablam! error: build failed
Sep 04 20:31:32.169 INFO kablam! su: No module specific data is present
Sep 04 20:31:32.513 INFO running `"docker" "rm" "-f" "3c6e09f3bd5d67ee7ad0a1ce60f992f0a54cec3c7fd47431469542243ae8eb68"`
Sep 04 20:31:32.645 INFO blam! 3c6e09f3bd5d67ee7ad0a1ce60f992f0a54cec3c7fd47431469542243ae8eb68