Sep 05 03:05:11.744 INFO checking amqpr-api-0.4.1 against try#5fe695a3844714c70e8f7731a553f7947987a68a for pr-53913
Sep 05 03:05:11.744 INFO running: cargo +5fe695a3844714c70e8f7731a553f7947987a68a-alt check --frozen --all --all-targets
Sep 05 03:05:11.744 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53913/try#5fe695a3844714c70e8f7731a553f7947987a68a:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-2/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 05 03:05:11.910 INFO blam! 88ccabebe388401376220854670bb791902339007c44b1276fe8b84e22ded642
Sep 05 03:05:11.912 INFO running `"docker" "start" "-a" "88ccabebe388401376220854670bb791902339007c44b1276fe8b84e22ded642"`
Sep 05 03:05:12.824 INFO kablam!     Checking amqpr-codec v0.3.2
Sep 05 03:05:12.825 INFO kablam!     Checking log4rs v0.7.0
Sep 05 03:05:14.808 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 05 03:05:14.808 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 05 03:05:14.808 INFO kablam!    |
Sep 05 03:05:14.808 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.808 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.808 INFO kablam!    |
Sep 05 03:05:14.808 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.808 INFO kablam! 
Sep 05 03:05:14.808 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 05 03:05:14.808 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 05 03:05:14.808 INFO kablam!    |
Sep 05 03:05:14.808 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.808 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.808 INFO kablam!    |
Sep 05 03:05:14.809 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.809 INFO kablam! 
Sep 05 03:05:14.809 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 05 03:05:14.809 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 05 03:05:14.809 INFO kablam!    |
Sep 05 03:05:14.809 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.809 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.809 INFO kablam!    |
Sep 05 03:05:14.809 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.809 INFO kablam! 
Sep 05 03:05:14.809 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 05 03:05:14.809 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 05 03:05:14.809 INFO kablam!    |
Sep 05 03:05:14.809 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.809 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.809 INFO kablam!    |
Sep 05 03:05:14.809 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.809 INFO kablam! 
Sep 05 03:05:14.809 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 05 03:05:14.809 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 05 03:05:14.809 INFO kablam!    |
Sep 05 03:05:14.809 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.809 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.809 INFO kablam!    |
Sep 05 03:05:14.810 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.810 INFO kablam! 
Sep 05 03:05:14.810 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 05 03:05:14.810 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 05 03:05:14.810 INFO kablam!    |
Sep 05 03:05:14.810 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.810 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.810 INFO kablam!    |
Sep 05 03:05:14.810 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.810 INFO kablam! 
Sep 05 03:05:14.810 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 05 03:05:14.810 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 05 03:05:14.810 INFO kablam!    |
Sep 05 03:05:14.810 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 05 03:05:14.810 INFO kablam!    |   ^^^^^
Sep 05 03:05:14.810 INFO kablam!    |
Sep 05 03:05:14.810 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 05 03:05:14.810 INFO kablam! 
Sep 05 03:05:14.915 INFO kablam! error: aborting due to 7 previous errors
Sep 05 03:05:14.915 INFO kablam! 
Sep 05 03:05:14.915 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 05 03:05:14.922 INFO kablam! error: Could not compile `log4rs`.
Sep 05 03:05:14.922 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 05 03:05:15.339 INFO kablam! error: build failed
Sep 05 03:05:15.340 INFO kablam! su: No module specific data is present
Sep 05 03:05:15.833 INFO running `"docker" "rm" "-f" "88ccabebe388401376220854670bb791902339007c44b1276fe8b84e22ded642"`
Sep 05 03:05:15.925 INFO blam! 88ccabebe388401376220854670bb791902339007c44b1276fe8b84e22ded642