Sep 04 04:16:02.228 INFO checking safe_core-0.31.0 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 04:16:02.229 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 04:16:02.229 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 04:16:02.486 INFO blam! 7741783969e43ac550a606aa8e2888d01260ff6176137ec7f0d4d87f4b070af4
Sep 04 04:16:02.489 INFO running `"docker" "start" "-a" "7741783969e43ac550a606aa8e2888d01260ff6176137ec7f0d4d87f4b070af4"`
Sep 04 04:16:03.953 INFO kablam!    Compiling podio v0.1.6
Sep 04 04:16:03.959 INFO kablam!    Compiling unwrap v1.1.0
Sep 04 04:16:04.000 INFO kablam!     Checking tiny-keccak v1.3.1
Sep 04 04:16:04.006 INFO kablam!     Checking fake_clock v0.2.0
Sep 04 04:16:04.007 INFO kablam!     Checking lru_time_cache v0.7.0
Sep 04 04:16:04.008 INFO kablam!    Compiling miniz_oxide v0.1.3
Sep 04 04:16:04.009 INFO kablam!     Checking atty v0.2.2
Sep 04 04:16:04.044 INFO kablam!     Checking termion v1.4.0
Sep 04 04:16:05.871 INFO kablam!    Compiling brotli-sys v0.3.0
Sep 04 04:16:06.092 INFO kablam!     Checking base64 v0.9.2
Sep 04 04:16:06.178 INFO kablam!    Compiling walkdir v2.0.1
Sep 04 04:16:06.259 INFO kablam!     Checking combine v2.5.2
Sep 04 04:16:06.307 INFO kablam!     Checking get_if_addrs v0.4.1
Sep 04 04:16:09.817 INFO kablam!    Compiling msdos_time v0.1.6
Sep 04 04:16:10.456 INFO kablam!     Checking bytes v0.4.9
Sep 04 04:16:10.922 INFO kablam!     Checking textwrap v0.6.0
Sep 04 04:16:11.534 INFO kablam!     Checking crossbeam-epoch v0.5.2
Sep 04 04:16:14.048 INFO kablam!    Compiling bzip2-sys v0.1.6
Sep 04 04:16:14.070 INFO kablam!     Checking regex v0.2.11
Sep 04 04:16:14.136 INFO kablam!     Checking clap v2.25.1
Sep 04 04:16:16.543 INFO kablam!     Checking url v1.5.1
Sep 04 04:16:20.953 INFO kablam!     Checking bincode v0.8.0
Sep 04 04:16:20.985 INFO kablam!    Compiling jni v0.10.1
Sep 04 04:16:21.047 INFO kablam!     Checking config_file_handler v0.9.0
Sep 04 04:16:24.900 INFO kablam!    Compiling bzip2 v0.3.3
Sep 04 04:16:25.236 INFO kablam!     Checking crossbeam-deque v0.6.1
Sep 04 04:16:27.899 INFO kablam!     Checking tokio-io v0.1.8
Sep 04 04:16:29.876 INFO kablam!     Checking error-chain v0.11.0
Sep 04 04:16:29.905 INFO kablam!    Compiling miniz_oxide_c_api v0.1.3
Sep 04 04:16:30.195 INFO kablam!     Checking hyper v0.10.13
Sep 04 04:16:33.877 INFO kablam!     Checking ws v0.7.3
Sep 04 04:16:34.071 INFO kablam!     Checking chrono v0.3.0
Sep 04 04:16:37.197 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 04 04:16:38.844 INFO kablam!     Checking tokio-codec v0.1.0
Sep 04 04:16:42.330 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 04 04:16:45.085 INFO kablam!    Compiling flate2 v1.0.2
Sep 04 04:16:49.873 INFO kablam!     Checking tokio-fs v0.1.3
Sep 04 04:16:50.257 INFO kablam!     Checking brotli2 v0.3.0
Sep 04 04:16:50.493 INFO kablam!     Checking log4rs v0.7.0
Sep 04 04:16:51.187 INFO kablam!     Checking tokio-uds v0.2.1
Sep 04 04:16:53.220 INFO kablam!     Checking tokio-udp v0.1.2
Sep 04 04:16:53.797 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 04:16:53.797 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 04 04:16:53.797 INFO kablam!    |
Sep 04 04:16:53.798 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.798 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.798 INFO kablam!    |
Sep 04 04:16:53.798 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.798 INFO kablam! 
Sep 04 04:16:53.798 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 04:16:53.798 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 04 04:16:53.798 INFO kablam!    |
Sep 04 04:16:53.798 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.798 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.798 INFO kablam!    |
Sep 04 04:16:53.798 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.798 INFO kablam! 
Sep 04 04:16:53.798 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 04:16:53.799 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 04:16:53.799 INFO kablam!    |
Sep 04 04:16:53.799 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.799 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.799 INFO kablam!    |
Sep 04 04:16:53.807 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.807 INFO kablam! 
Sep 04 04:16:53.807 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 04:16:53.807 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 04:16:53.807 INFO kablam!    |
Sep 04 04:16:53.807 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.807 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.807 INFO kablam!    |
Sep 04 04:16:53.808 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.808 INFO kablam! 
Sep 04 04:16:53.808 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 04:16:53.808 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 04:16:53.808 INFO kablam!    |
Sep 04 04:16:53.808 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.808 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.808 INFO kablam!    |
Sep 04 04:16:53.808 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.808 INFO kablam! 
Sep 04 04:16:53.809 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 04:16:53.809 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 04:16:53.809 INFO kablam!    |
Sep 04 04:16:53.809 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.809 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.809 INFO kablam!    |
Sep 04 04:16:53.809 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.809 INFO kablam! 
Sep 04 04:16:53.810 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 04:16:53.810 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 04 04:16:53.810 INFO kablam!    |
Sep 04 04:16:53.810 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 04:16:53.810 INFO kablam!    |   ^^^^^
Sep 04 04:16:53.810 INFO kablam!    |
Sep 04 04:16:53.810 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 04:16:53.810 INFO kablam! 
Sep 04 04:16:53.995 INFO kablam! error: aborting due to 7 previous errors
Sep 04 04:16:53.995 INFO kablam! 
Sep 04 04:16:53.995 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 04:16:54.006 INFO kablam! error: Could not compile `log4rs`.
Sep 04 04:16:54.007 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 04:17:00.516 INFO kablam! error: build failed
Sep 04 04:17:00.518 INFO kablam! su: No module specific data is present
Sep 04 04:17:00.914 INFO running `"docker" "rm" "-f" "7741783969e43ac550a606aa8e2888d01260ff6176137ec7f0d4d87f4b070af4"`
Sep 04 04:17:01.052 INFO blam! 7741783969e43ac550a606aa8e2888d01260ff6176137ec7f0d4d87f4b070af4