Sep 06 02:43:02.515 INFO checking parsec-0.5.0 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 06 02:43:02.516 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 06 02:43:02.516 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-0/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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=1000" "-e" "CMD=cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 02:43:02.700 INFO blam! d8dff02991e08261fe62d3f7253a3956ee1b958975efec58d5224703bc775542
Sep 06 02:43:02.702 INFO running `"docker" "start" "-a" "d8dff02991e08261fe62d3f7253a3956ee1b958975efec58d5224703bc775542"`
Sep 06 02:43:03.962 INFO kablam! usermod: no changes
Sep 06 02:43:04.201 INFO kablam!     Checking clap v2.31.2
Sep 06 02:43:04.201 INFO kablam!     Checking regex v0.2.11
Sep 06 02:43:04.207 INFO kablam!     Checking ws v0.7.3
Sep 06 02:43:04.218 INFO kablam!     Checking log4rs v0.7.0
Sep 06 02:43:05.468 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 06 02:43:05.469 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 06 02:43:05.469 INFO kablam!    |
Sep 06 02:43:05.469 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.469 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.482 INFO kablam! 
Sep 06 02:43:05.482 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 06 02:43:05.482 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.482 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.482 INFO kablam! 
Sep 06 02:43:05.482 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 06 02:43:05.482 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 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.482 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.482 INFO kablam! 
Sep 06 02:43:05.482 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 06 02:43:05.482 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 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.482 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.482 INFO kablam! 
Sep 06 02:43:05.482 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 06 02:43:05.482 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 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.482 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.482 INFO kablam!    |
Sep 06 02:43:05.482 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.483 INFO kablam! 
Sep 06 02:43:05.483 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 06 02:43:05.483 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 06 02:43:05.483 INFO kablam!    |
Sep 06 02:43:05.483 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.483 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.483 INFO kablam!    |
Sep 06 02:43:05.483 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.483 INFO kablam! 
Sep 06 02:43:05.483 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 06 02:43:05.483 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 06 02:43:05.483 INFO kablam!    |
Sep 06 02:43:05.483 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 06 02:43:05.483 INFO kablam!    |   ^^^^^
Sep 06 02:43:05.483 INFO kablam!    |
Sep 06 02:43:05.483 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 02:43:05.483 INFO kablam! 
Sep 06 02:43:05.614 INFO kablam! error: aborting due to 7 previous errors
Sep 06 02:43:05.614 INFO kablam! 
Sep 06 02:43:05.614 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 06 02:43:05.622 INFO kablam! error: Could not compile `log4rs`.
Sep 06 02:43:05.622 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 02:43:09.531 INFO kablam! error: build failed
Sep 06 02:43:09.540 INFO kablam! su: No module specific data is present
Sep 06 02:43:10.364 INFO running `"docker" "rm" "-f" "d8dff02991e08261fe62d3f7253a3956ee1b958975efec58d5224703bc775542"`
Sep 06 02:43:10.499 INFO blam! d8dff02991e08261fe62d3f7253a3956ee1b958975efec58d5224703bc775542