Sep 06 00:31:46.990 INFO checking safe_core-0.31.0 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 06 00:31:46.990 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 06 00:31:46.990 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-3/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 00:31:47.270 INFO blam! fd05559ed21fc091462cdae3fc2fb7f8f3395d31dfb332f21718052decb7c12d
Sep 06 00:31:47.272 INFO running `"docker" "start" "-a" "fd05559ed21fc091462cdae3fc2fb7f8f3395d31dfb332f21718052decb7c12d"`
Sep 06 00:31:48.589 INFO kablam! usermod: no changes
Sep 06 00:31:49.131 INFO kablam!    Compiling adler32 v1.0.3
Sep 06 00:31:49.162 INFO kablam!    Compiling unwrap v1.1.0
Sep 06 00:31:49.162 INFO kablam!     Checking c_linked_list v1.1.1
Sep 06 00:31:49.162 INFO kablam!     Checking jni-sys v0.3.0
Sep 06 00:31:49.162 INFO kablam!     Checking cesu8 v1.1.0
Sep 06 00:31:49.162 INFO kablam!     Checking fs2 v0.4.3
Sep 06 00:31:49.162 INFO kablam!     Checking atty v0.2.2
Sep 06 00:31:50.013 INFO kablam!     Checking termion v1.4.0
Sep 06 00:31:50.230 INFO kablam!    Compiling brotli-sys v0.3.0
Sep 06 00:31:50.654 INFO kablam!    Compiling walkdir v2.0.1
Sep 06 00:31:50.654 INFO kablam!     Checking base64 v0.9.2
Sep 06 00:31:50.654 INFO kablam!     Checking combine v2.5.2
Sep 06 00:31:50.762 INFO kablam!    Compiling msdos_time v0.1.6
Sep 06 00:31:51.179 INFO kablam!     Checking crossbeam-epoch v0.5.2
Sep 06 00:31:52.402 INFO kablam!     Checking bytes v0.4.10
Sep 06 00:31:53.006 INFO kablam!     Checking textwrap v0.6.0
Sep 06 00:31:56.406 INFO kablam!     Checking get_if_addrs v0.4.1
Sep 06 00:31:56.418 INFO kablam!    Compiling miniz_oxide v0.1.3
Sep 06 00:31:56.418 INFO kablam!    Compiling bzip2-sys v0.1.6
Sep 06 00:31:56.426 INFO kablam!     Checking url v1.5.1
Sep 06 00:31:56.482 INFO kablam!     Checking regex v0.2.11
Sep 06 00:31:56.588 INFO kablam!     Checking crossbeam-deque v0.6.1
Sep 06 00:31:58.199 INFO kablam!     Checking clap v2.25.1
Sep 06 00:31:58.334 INFO kablam!     Checking bincode v0.8.0
Sep 06 00:31:59.090 INFO kablam!     Checking config_file_handler v0.9.0
Sep 06 00:32:01.642 INFO kablam!    Compiling jni v0.10.1
Sep 06 00:32:02.458 INFO kablam!    Compiling bzip2 v0.3.3
Sep 06 00:32:04.192 INFO kablam!     Checking tokio-io v0.1.8
Sep 06 00:32:04.438 INFO kablam!     Checking error-chain v0.11.0
Sep 06 00:32:05.898 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 06 00:32:05.925 INFO kablam!     Checking ws v0.7.3
Sep 06 00:32:10.350 INFO kablam!     Checking hyper v0.10.13
Sep 06 00:32:10.371 INFO kablam!     Checking tokio-codec v0.1.0
Sep 06 00:32:10.391 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 06 00:32:13.204 INFO kablam!    Compiling miniz_oxide_c_api v0.1.3
Sep 06 00:32:15.186 INFO kablam!     Checking log4rs v0.7.0
Sep 06 00:32:15.751 INFO kablam!     Checking tokio-fs v0.1.3
Sep 06 00:32:18.642 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 00:32:18.642 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 06 00:32:18.642 INFO kablam!    |
Sep 06 00:32:18.642 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.642 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.642 INFO kablam!    |
Sep 06 00:32:18.642 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.642 INFO kablam! 
Sep 06 00:32:18.666 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 00:32:18.666 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 06 00:32:18.666 INFO kablam!    |
Sep 06 00:32:18.666 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.666 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.666 INFO kablam!    |
Sep 06 00:32:18.666 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.666 INFO kablam! 
Sep 06 00:32:18.666 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 00:32:18.666 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 00:32:18.666 INFO kablam!    |
Sep 06 00:32:18.666 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.666 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.666 INFO kablam!    |
Sep 06 00:32:18.666 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.666 INFO kablam! 
Sep 06 00:32:18.666 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 00:32:18.666 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 00:32:18.666 INFO kablam!    |
Sep 06 00:32:18.666 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.666 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.666 INFO kablam!    |
Sep 06 00:32:18.666 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.666 INFO kablam! 
Sep 06 00:32:18.666 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 00:32:18.667 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 00:32:18.667 INFO kablam!    |
Sep 06 00:32:18.667 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.667 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.667 INFO kablam!    |
Sep 06 00:32:18.667 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.667 INFO kablam! 
Sep 06 00:32:18.667 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 00:32:18.667 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 00:32:18.667 INFO kablam!    |
Sep 06 00:32:18.667 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.667 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.667 INFO kablam!    |
Sep 06 00:32:18.667 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.667 INFO kablam! 
Sep 06 00:32:18.667 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 00:32:18.667 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 06 00:32:18.667 INFO kablam!    |
Sep 06 00:32:18.667 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 06 00:32:18.667 INFO kablam!    |   ^^^^^
Sep 06 00:32:18.667 INFO kablam!    |
Sep 06 00:32:18.667 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:32:18.667 INFO kablam! 
Sep 06 00:32:18.908 INFO kablam! error: aborting due to 7 previous errors
Sep 06 00:32:18.918 INFO kablam! 
Sep 06 00:32:18.918 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 06 00:32:18.953 INFO kablam! error: Could not compile `log4rs`.
Sep 06 00:32:18.953 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 00:32:28.750 INFO kablam! error: build failed
Sep 06 00:32:28.752 INFO kablam! su: No module specific data is present
Sep 06 00:32:29.656 INFO running `"docker" "rm" "-f" "fd05559ed21fc091462cdae3fc2fb7f8f3395d31dfb332f21718052decb7c12d"`
Sep 06 00:32:29.794 INFO blam! fd05559ed21fc091462cdae3fc2fb7f8f3395d31dfb332f21718052decb7c12d