Aug 30 08:47:38.841 INFO checking parsec-0.5.0 against master#ede55518431154bc761f7b2438cce9078c162700 for pr-53707
Aug 30 08:47:38.841 INFO running: cargo +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets
Aug 30 08:47:38.841 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53707/master#ede55518431154bc761f7b2438cce9078c162700:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-1/master#ede55518431154bc761f7b2438cce9078c162700:/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 +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 08:47:39.002 INFO blam! 96a4489e2ddbfca8473ce3993a6c8c5e56afbf7739c6b72406bb42ce1b253f4e
Aug 30 08:47:39.005 INFO running `"docker" "start" "-a" "96a4489e2ddbfca8473ce3993a6c8c5e56afbf7739c6b72406bb42ce1b253f4e"`
Aug 30 08:47:40.081 INFO kablam!     Checking log4rs v0.7.0
Aug 30 08:47:41.216 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 30 08:47:41.216 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Aug 30 08:47:41.216 INFO kablam!    |
Aug 30 08:47:41.216 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.216 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.216 INFO kablam!    |
Aug 30 08:47:41.216 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.216 INFO kablam! 
Aug 30 08:47:41.217 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 30 08:47:41.217 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Aug 30 08:47:41.217 INFO kablam!    |
Aug 30 08:47:41.217 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.217 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.217 INFO kablam!    |
Aug 30 08:47:41.217 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.217 INFO kablam! 
Aug 30 08:47:41.217 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 30 08:47:41.217 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Aug 30 08:47:41.217 INFO kablam!    |
Aug 30 08:47:41.217 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.217 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.217 INFO kablam!    |
Aug 30 08:47:41.217 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.217 INFO kablam! 
Aug 30 08:47:41.218 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 30 08:47:41.218 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
Aug 30 08:47:41.218 INFO kablam!    |
Aug 30 08:47:41.218 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.218 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.218 INFO kablam!    |
Aug 30 08:47:41.218 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.218 INFO kablam! 
Aug 30 08:47:41.218 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 30 08:47:41.218 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Aug 30 08:47:41.218 INFO kablam!    |
Aug 30 08:47:41.218 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.218 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.218 INFO kablam!    |
Aug 30 08:47:41.218 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.218 INFO kablam! 
Aug 30 08:47:41.218 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 30 08:47:41.218 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Aug 30 08:47:41.218 INFO kablam!    |
Aug 30 08:47:41.218 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.218 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.218 INFO kablam!    |
Aug 30 08:47:41.218 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.218 INFO kablam! 
Aug 30 08:47:41.219 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 30 08:47:41.219 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Aug 30 08:47:41.219 INFO kablam!    |
Aug 30 08:47:41.219 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Aug 30 08:47:41.219 INFO kablam!    |   ^^^^^
Aug 30 08:47:41.219 INFO kablam!    |
Aug 30 08:47:41.219 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Aug 30 08:47:41.219 INFO kablam! 
Aug 30 08:47:41.312 INFO kablam! error: aborting due to 7 previous errors
Aug 30 08:47:41.312 INFO kablam! 
Aug 30 08:47:41.312 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 30 08:47:41.323 INFO kablam! error: Could not compile `log4rs`.
Aug 30 08:47:41.323 INFO kablam! 
Aug 30 08:47:41.323 INFO kablam! To learn more, run the command again with --verbose.
Aug 30 08:47:41.325 INFO kablam! su: No module specific data is present
Aug 30 08:47:41.837 INFO running `"docker" "rm" "-f" "96a4489e2ddbfca8473ce3993a6c8c5e56afbf7739c6b72406bb42ce1b253f4e"`
Aug 30 08:47:41.962 INFO blam! 96a4489e2ddbfca8473ce3993a6c8c5e56afbf7739c6b72406bb42ce1b253f4e