Sep 06 00:31:44.088 INFO checking safe_crypto-0.3.0 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 00:31:44.088 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 00:31:44.088 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-7/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 00:31:44.365 INFO blam! 8c96ca1c6fb854b62774eb9adb2ea92af60a2b031b5a6d11ac02c8f9a11a91eb
Sep 06 00:31:44.369 INFO running `"docker" "start" "-a" "8c96ca1c6fb854b62774eb9adb2ea92af60a2b031b5a6d11ac02c8f9a11a91eb"`
Sep 06 00:31:45.764 INFO kablam! usermod: no changes
Sep 06 00:31:46.185 INFO kablam!    Compiling mio v0.6.15
Sep 06 00:31:46.185 INFO kablam!    Compiling want v0.0.4
Sep 06 00:31:46.185 INFO kablam!    Compiling crossbeam-deque v0.6.1
Sep 06 00:31:46.185 INFO kablam!    Compiling unicase v2.1.0
Sep 06 00:31:46.185 INFO kablam!    Compiling tokio-io v0.1.8
Sep 06 00:31:46.185 INFO kablam!    Compiling url v1.5.1
Sep 06 00:31:46.185 INFO kablam!     Checking serde_yaml v0.7.5
Sep 06 00:31:46.185 INFO kablam!     Checking regex v0.2.11
Sep 06 00:31:48.846 INFO kablam!    Compiling openssl v0.9.24
Sep 06 00:31:48.910 INFO kablam!    Compiling miniz_oxide_c_api v0.1.3
Sep 06 00:31:52.378 INFO kablam!    Compiling libflate v0.1.16
Sep 06 00:31:52.435 INFO kablam!     Checking config_file_handler v0.9.0
Sep 06 00:31:54.263 INFO kablam!     Checking ws v0.7.3
Sep 06 00:32:00.202 INFO kablam!    Compiling phf v0.7.23
Sep 06 00:32:00.202 INFO kablam!    Compiling tokio-threadpool v0.1.6
Sep 06 00:32:00.291 INFO kablam!    Compiling flate2 v1.0.2
Sep 06 00:32:00.379 INFO kablam!     Checking serde-value v0.5.2
Sep 06 00:32:00.398 INFO kablam!    Compiling tokio-codec v0.1.0
Sep 06 00:32:00.550 INFO kablam!    Compiling mime v0.3.9
Sep 06 00:32:02.558 INFO kablam!    Compiling mio-uds v0.6.7
Sep 06 00:32:02.649 INFO kablam!    Compiling tokio-reactor v0.1.5
Sep 06 00:32:07.448 INFO kablam!    Compiling serde_urlencoded v0.5.3
Sep 06 00:32:08.122 INFO kablam!     Checking log4rs v0.7.0
Sep 06 00:32:12.205 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 00:32:12.205 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 06 00:32:12.205 INFO kablam!    |
Sep 06 00:32:12.205 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.205 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.218 INFO kablam!    |
Sep 06 00:32:12.218 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.218 INFO kablam! 
Sep 06 00:32:12.218 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 00:32:12.218 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 06 00:32:12.218 INFO kablam!    |
Sep 06 00:32:12.218 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.218 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.218 INFO kablam!    |
Sep 06 00:32:12.218 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.218 INFO kablam! 
Sep 06 00:32:12.218 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 00:32:12.219 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 00:32:12.219 INFO kablam!    |
Sep 06 00:32:12.219 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.219 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.219 INFO kablam!    |
Sep 06 00:32:12.219 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.219 INFO kablam! 
Sep 06 00:32:12.219 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 00:32:12.219 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 00:32:12.219 INFO kablam!    |
Sep 06 00:32:12.219 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.219 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.219 INFO kablam!    |
Sep 06 00:32:12.219 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.219 INFO kablam! 
Sep 06 00:32:12.219 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 00:32:12.219 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 00:32:12.219 INFO kablam!    |
Sep 06 00:32:12.219 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.219 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.220 INFO kablam!    |
Sep 06 00:32:12.220 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.220 INFO kablam! 
Sep 06 00:32:12.220 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 00:32:12.220 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 00:32:12.220 INFO kablam!    |
Sep 06 00:32:12.220 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.220 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.220 INFO kablam!    |
Sep 06 00:32:12.220 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.220 INFO kablam! 
Sep 06 00:32:12.220 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 00:32:12.220 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 06 00:32:12.220 INFO kablam!    |
Sep 06 00:32:12.220 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 06 00:32:12.220 INFO kablam!    |   ^^^^^
Sep 06 00:32:12.220 INFO kablam!    |
Sep 06 00:32:12.220 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:12.220 INFO kablam! 
Sep 06 00:32:12.584 INFO kablam! error: aborting due to 7 previous errors
Sep 06 00:32:12.584 INFO kablam! 
Sep 06 00:32:12.585 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 06 00:32:12.643 INFO kablam! error: Could not compile `log4rs`.
Sep 06 00:32:12.643 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 00:32:16.033 INFO kablam! error: build failed
Sep 06 00:32:16.042 INFO kablam! su: No module specific data is present
Sep 06 00:32:17.407 INFO running `"docker" "rm" "-f" "8c96ca1c6fb854b62774eb9adb2ea92af60a2b031b5a6d11ac02c8f9a11a91eb"`
Sep 06 00:32:17.519 INFO blam! 8c96ca1c6fb854b62774eb9adb2ea92af60a2b031b5a6d11ac02c8f9a11a91eb