Sep 04 07:27:36.364 INFO checking safe_core-0.31.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 07:27:36.364 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 07:27:36.364 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-3/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 07:27:36.584 INFO blam! 758ce03cdbead3bdcf475afc6f0a4028794b555684b0a58c495c953cba4aee80
Sep 04 07:27:36.586 INFO running `"docker" "start" "-a" "758ce03cdbead3bdcf475afc6f0a4028794b555684b0a58c495c953cba4aee80"`
Sep 04 07:27:37.907 INFO kablam!     Checking c_linked_list v1.1.1
Sep 04 07:27:37.907 INFO kablam!     Checking tiny-keccak v1.3.1
Sep 04 07:27:37.907 INFO kablam!     Checking lru_time_cache v0.7.0
Sep 04 07:27:37.918 INFO kablam!     Checking fake_clock v0.2.0
Sep 04 07:27:37.929 INFO kablam!     Checking atty v0.2.2
Sep 04 07:27:37.930 INFO kablam!     Checking termion v1.4.0
Sep 04 07:27:37.931 INFO kablam!    Compiling brotli-sys v0.3.0
Sep 04 07:27:37.932 INFO kablam!    Compiling walkdir v2.0.1
Sep 04 07:27:39.993 INFO kablam!     Checking base64 v0.9.2
Sep 04 07:27:40.060 INFO kablam!     Checking combine v2.5.2
Sep 04 07:27:40.190 INFO kablam!     Checking bytes v0.4.9
Sep 04 07:27:40.855 INFO kablam!     Checking crossbeam-epoch v0.5.2
Sep 04 07:27:42.499 INFO kablam!     Checking xmltree v0.3.2
Sep 04 07:27:45.454 INFO kablam!     Checking get_if_addrs v0.4.1
Sep 04 07:27:45.522 INFO kablam!     Checking regex v0.2.11
Sep 04 07:27:45.556 INFO kablam!     Checking clap v2.25.1
Sep 04 07:27:45.590 INFO kablam!    Compiling miniz_oxide_c_api v0.1.3
Sep 04 07:27:46.346 INFO kablam!     Checking chrono v0.4.6
Sep 04 07:27:48.814 INFO kablam!     Checking bincode v0.8.0
Sep 04 07:27:49.218 INFO kablam!    Compiling jni v0.10.1
Sep 04 07:27:53.441 INFO kablam!     Checking config_file_handler v0.9.0
Sep 04 07:27:53.501 INFO kablam!     Checking hyper v0.10.13
Sep 04 07:27:54.953 INFO kablam!     Checking crossbeam-deque v0.6.1
Sep 04 07:27:57.332 INFO kablam!     Checking tokio-io v0.1.8
Sep 04 07:27:59.598 INFO kablam!     Checking ws v0.7.3
Sep 04 07:28:04.005 INFO kablam!    Compiling flate2 v1.0.2
Sep 04 07:28:04.191 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 04 07:28:06.726 INFO kablam!     Checking log4rs v0.7.0
Sep 04 07:28:07.486 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 04 07:28:12.180 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 07:28:12.180 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 04 07:28:12.180 INFO kablam!    |
Sep 04 07:28:12.180 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.180 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.180 INFO kablam!    |
Sep 04 07:28:12.180 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.180 INFO kablam! 
Sep 04 07:28:12.180 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 07:28:12.180 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 04 07:28:12.181 INFO kablam!    |
Sep 04 07:28:12.181 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.181 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.181 INFO kablam!    |
Sep 04 07:28:12.181 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.181 INFO kablam! 
Sep 04 07:28:12.181 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 07:28:12.181 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 07:28:12.181 INFO kablam!    |
Sep 04 07:28:12.181 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.181 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.181 INFO kablam!    |
Sep 04 07:28:12.181 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.181 INFO kablam! 
Sep 04 07:28:12.181 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 07:28:12.181 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 07:28:12.181 INFO kablam!    |
Sep 04 07:28:12.181 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.181 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.181 INFO kablam!    |
Sep 04 07:28:12.181 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.181 INFO kablam! 
Sep 04 07:28:12.213 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 07:28:12.213 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 07:28:12.213 INFO kablam!    |
Sep 04 07:28:12.213 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.213 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.213 INFO kablam!    |
Sep 04 07:28:12.213 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.213 INFO kablam! 
Sep 04 07:28:12.213 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 07:28:12.213 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 07:28:12.213 INFO kablam!    |
Sep 04 07:28:12.213 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.213 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.213 INFO kablam!    |
Sep 04 07:28:12.213 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.213 INFO kablam! 
Sep 04 07:28:12.214 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 07:28:12.214 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 04 07:28:12.214 INFO kablam!    |
Sep 04 07:28:12.214 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 07:28:12.214 INFO kablam!    |   ^^^^^
Sep 04 07:28:12.214 INFO kablam!    |
Sep 04 07:28:12.214 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 07:28:12.214 INFO kablam! 
Sep 04 07:28:12.793 INFO kablam! error: aborting due to 7 previous errors
Sep 04 07:28:12.793 INFO kablam! 
Sep 04 07:28:12.793 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 07:28:12.829 INFO kablam! error: Could not compile `log4rs`.
Sep 04 07:28:12.830 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 07:28:20.327 INFO kablam! error: build failed
Sep 04 07:28:20.329 INFO kablam! su: No module specific data is present
Sep 04 07:28:20.841 INFO running `"docker" "rm" "-f" "758ce03cdbead3bdcf475afc6f0a4028794b555684b0a58c495c953cba4aee80"`
Sep 04 07:28:20.939 INFO blam! 758ce03cdbead3bdcf475afc6f0a4028794b555684b0a58c495c953cba4aee80