Sep 04 23:52:25.152 INFO checking connectr-1.0.0 against try#5fe695a3844714c70e8f7731a553f7947987a68a for pr-53913
Sep 04 23:52:25.152 INFO running: cargo +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets
Sep 04 23:52:25.152 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53913/try#5fe695a3844714c70e8f7731a553f7947987a68a:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-0/try#5fe695a3844714c70e8f7731a553f7947987a68a:/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 +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 23:52:25.342 INFO blam! 6a228a06c907548521cdb9666f845f6b96c671fdf5d8100c7a1ed9669c491146
Sep 04 23:52:25.344 INFO running `"docker" "start" "-a" "6a228a06c907548521cdb9666f845f6b96c671fdf5d8100c7a1ed9669c491146"`
Sep 04 23:52:26.485 INFO kablam!    Compiling rubrail v0.7.0
Sep 04 23:52:26.492 INFO kablam!    Compiling wrapped-vec v0.2.1
Sep 04 23:52:26.493 INFO kablam!     Checking tokio-reactor v0.1.5
Sep 04 23:52:26.494 INFO kablam!     Checking serde-value v0.5.2
Sep 04 23:52:26.494 INFO kablam!     Checking timer v0.2.0
Sep 04 23:52:29.310 INFO kablam!     Checking log4rs v0.8.0
Sep 04 23:52:30.448 INFO kablam!     Checking tokio-udp v0.1.2
Sep 04 23:52:30.451 INFO kablam!     Checking tokio-uds v0.2.1
Sep 04 23:52:30.451 INFO kablam!     Checking tokio-tcp v0.1.1
Sep 04 23:52:31.965 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 23:52:31.965 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 04 23:52:31.965 INFO kablam!    |
Sep 04 23:52:31.965 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.965 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.965 INFO kablam!    |
Sep 04 23:52:31.965 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.965 INFO kablam! 
Sep 04 23:52:31.966 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 23:52:31.966 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 04 23:52:31.966 INFO kablam!    |
Sep 04 23:52:31.966 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.966 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.966 INFO kablam!    |
Sep 04 23:52:31.966 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.966 INFO kablam! 
Sep 04 23:52:31.967 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 23:52:31.967 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 04 23:52:31.967 INFO kablam!    |
Sep 04 23:52:31.967 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.967 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.967 INFO kablam!    |
Sep 04 23:52:31.967 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.967 INFO kablam! 
Sep 04 23:52:31.968 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 23:52:31.968 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Sep 04 23:52:31.968 INFO kablam!    |
Sep 04 23:52:31.968 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.968 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.968 INFO kablam!    |
Sep 04 23:52:31.968 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.968 INFO kablam! 
Sep 04 23:52:31.969 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 23:52:31.969 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 04 23:52:31.969 INFO kablam!    |
Sep 04 23:52:31.969 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.969 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.969 INFO kablam!    |
Sep 04 23:52:31.970 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.970 INFO kablam! 
Sep 04 23:52:31.970 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 23:52:31.970 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 04 23:52:31.970 INFO kablam!    |
Sep 04 23:52:31.971 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.971 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.971 INFO kablam!    |
Sep 04 23:52:31.971 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.972 INFO kablam! 
Sep 04 23:52:31.972 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 23:52:31.972 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 04 23:52:31.972 INFO kablam!    |
Sep 04 23:52:31.972 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 04 23:52:31.972 INFO kablam!    |   ^^^^^
Sep 04 23:52:31.973 INFO kablam!    |
Sep 04 23:52:31.973 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 04 23:52:31.980 INFO kablam! 
Sep 04 23:52:32.211 INFO kablam! error: aborting due to 7 previous errors
Sep 04 23:52:32.216 INFO kablam! 
Sep 04 23:52:32.216 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 04 23:52:32.229 INFO kablam! error: Could not compile `log4rs`.
Sep 04 23:52:32.229 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 23:52:35.110 INFO kablam! error: build failed
Sep 04 23:52:35.112 INFO kablam! su: No module specific data is present
Sep 04 23:52:35.736 INFO running `"docker" "rm" "-f" "6a228a06c907548521cdb9666f845f6b96c671fdf5d8100c7a1ed9669c491146"`
Sep 04 23:52:35.882 INFO blam! 6a228a06c907548521cdb9666f845f6b96c671fdf5d8100c7a1ed9669c491146