Aug 31 16:33:49.880 INFO checking rincon_test_helper-0.1.0 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 16:33:49.880 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 16:33:49.880 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 16:33:50.014 INFO blam! 557dc00f338abe739a5a612377e3401211637589957f43011e49caede0625be2
Aug 31 16:33:50.015 INFO running `"docker" "start" "-a" "557dc00f338abe739a5a612377e3401211637589957f43011e49caede0625be2"`
Aug 31 16:33:51.013 INFO kablam!     Checking log v0.4.4
Aug 31 16:33:51.015 INFO kablam!    Compiling synstructure v0.9.0
Aug 31 16:33:51.016 INFO kablam!    Compiling derive-error-chain v0.11.2
Aug 31 16:33:52.134 INFO kablam!     Checking tokio-io v0.1.8
Aug 31 16:33:52.134 INFO kablam!     Checking mio v0.6.15
Aug 31 16:33:52.144 INFO kablam!     Checking tokio-threadpool v0.1.6
Aug 31 16:33:52.146 INFO kablam!     Checking log v0.3.9
Aug 31 16:33:52.149 INFO kablam!     Checking want v0.0.4
Aug 31 16:33:52.149 INFO kablam!     Checking log4rs v0.8.0
Aug 31 16:33:57.228 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)
Aug 31 16:33:57.228 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Aug 31 16:33:57.228 INFO kablam!    |
Aug 31 16:33:57.228 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.228 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.246 INFO kablam!    |
Aug 31 16:33:57.246 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.247 INFO kablam! 
Aug 31 16:33:57.247 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)
Aug 31 16:33:57.247 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Aug 31 16:33:57.247 INFO kablam!    |
Aug 31 16:33:57.247 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.247 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.247 INFO kablam!    |
Aug 31 16:33:57.247 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.248 INFO kablam! 
Aug 31 16:33:57.248 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)
Aug 31 16:33:57.248 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Aug 31 16:33:57.248 INFO kablam!    |
Aug 31 16:33:57.248 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.248 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.248 INFO kablam!    |
Aug 31 16:33:57.248 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.248 INFO kablam! 
Aug 31 16:33:57.248 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)
Aug 31 16:33:57.248 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
Aug 31 16:33:57.248 INFO kablam!    |
Aug 31 16:33:57.248 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.248 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.248 INFO kablam!    |
Aug 31 16:33:57.248 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.248 INFO kablam! 
Aug 31 16:33:57.249 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)
Aug 31 16:33:57.249 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Aug 31 16:33:57.250 INFO kablam!    |
Aug 31 16:33:57.250 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.250 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.250 INFO kablam!    |
Aug 31 16:33:57.250 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.250 INFO kablam! 
Aug 31 16:33:57.250 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)
Aug 31 16:33:57.250 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Aug 31 16:33:57.250 INFO kablam!    |
Aug 31 16:33:57.250 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.250 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.250 INFO kablam!    |
Aug 31 16:33:57.250 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.250 INFO kablam! 
Aug 31 16:33:57.250 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)
Aug 31 16:33:57.250 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Aug 31 16:33:57.250 INFO kablam!    |
Aug 31 16:33:57.250 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 31 16:33:57.250 INFO kablam!    |   ^^^^^
Aug 31 16:33:57.250 INFO kablam!    |
Aug 31 16:33:57.250 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 31 16:33:57.250 INFO kablam! 
Aug 31 16:33:57.625 INFO kablam! error: aborting due to 7 previous errors
Aug 31 16:33:57.625 INFO kablam! 
Aug 31 16:33:57.625 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 31 16:33:57.659 INFO kablam! error: Could not compile `log4rs`.
Aug 31 16:33:57.659 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 31 16:34:12.504 INFO kablam! error: build failed
Aug 31 16:34:12.506 INFO kablam! su: No module specific data is present
Aug 31 16:34:12.880 INFO running `"docker" "rm" "-f" "557dc00f338abe739a5a612377e3401211637589957f43011e49caede0625be2"`
Aug 31 16:34:12.971 INFO blam! 557dc00f338abe739a5a612377e3401211637589957f43011e49caede0625be2