Sep 02 00:46:02.136 INFO checking scavenger-1.0.0 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 02 00:46:02.136 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 02 00:46:02.137 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-0/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 00:46:02.361 INFO blam! 735f608237b7763f3e35faf3d3331e6d5f96f015083099d7096b1b453536b501
Sep 02 00:46:02.365 INFO running `"docker" "start" "-a" "735f608237b7763f3e35faf3d3331e6d5f96f015083099d7096b1b453536b501"`
Sep 02 00:46:03.730 INFO kablam!    Compiling scavenger v1.0.0 (file:///source)
Sep 02 00:46:03.752 INFO kablam!     Checking core_affinity v0.5.9
Sep 02 00:46:03.772 INFO kablam!     Checking clap v2.30.0
Sep 02 00:46:03.811 INFO kablam!     Checking sct v0.4.0
Sep 02 00:46:03.820 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 02 00:46:03.821 INFO kablam!     Checking webpki-roots v0.15.0
Sep 02 00:46:03.821 INFO kablam!     Checking tokio-udp v0.1.2
Sep 02 00:46:03.826 INFO kablam!     Checking tokio-uds v0.2.1
Sep 02 00:46:05.903 INFO kablam!     Checking tokio-tcp v0.1.1
Sep 02 00:46:06.876 INFO kablam!     Checking log4rs v0.8.0
Sep 02 00:46:07.761 INFO kablam!     Checking stopwatch v0.0.7
Sep 02 00:46:09.235 INFO kablam!     Checking rustls v0.13.1
Sep 02 00:46:11.353 INFO kablam!     Checking ct-logs v0.4.0
Sep 02 00:46:12.202 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 02 00:46:12.202 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 02 00:46:12.202 INFO kablam!    |
Sep 02 00:46:12.202 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.202 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.202 INFO kablam!    |
Sep 02 00:46:12.202 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.202 INFO kablam! 
Sep 02 00:46:12.203 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 02 00:46:12.203 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 02 00:46:12.203 INFO kablam!    |
Sep 02 00:46:12.203 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.203 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.203 INFO kablam!    |
Sep 02 00:46:12.203 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.203 INFO kablam! 
Sep 02 00:46:12.203 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 02 00:46:12.204 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 02 00:46:12.204 INFO kablam!    |
Sep 02 00:46:12.204 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.204 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.204 INFO kablam!    |
Sep 02 00:46:12.204 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.204 INFO kablam! 
Sep 02 00:46:12.204 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 02 00:46:12.204 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 02 00:46:12.204 INFO kablam!    |
Sep 02 00:46:12.204 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.204 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.204 INFO kablam!    |
Sep 02 00:46:12.204 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.204 INFO kablam! 
Sep 02 00:46:12.204 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 02 00:46:12.204 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 02 00:46:12.204 INFO kablam!    |
Sep 02 00:46:12.204 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.204 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.204 INFO kablam!    |
Sep 02 00:46:12.204 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.204 INFO kablam! 
Sep 02 00:46:12.205 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 02 00:46:12.205 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 02 00:46:12.205 INFO kablam!    |
Sep 02 00:46:12.205 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.205 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.205 INFO kablam!    |
Sep 02 00:46:12.205 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.205 INFO kablam! 
Sep 02 00:46:12.205 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 02 00:46:12.205 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 02 00:46:12.205 INFO kablam!    |
Sep 02 00:46:12.205 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 02 00:46:12.205 INFO kablam!    |   ^^^^^
Sep 02 00:46:12.205 INFO kablam!    |
Sep 02 00:46:12.206 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 02 00:46:12.206 INFO kablam! 
Sep 02 00:46:12.492 INFO kablam! error: aborting due to 7 previous errors
Sep 02 00:46:12.498 INFO kablam! 
Sep 02 00:46:12.499 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 02 00:46:12.523 INFO kablam! error: Could not compile `log4rs`.
Sep 02 00:46:12.524 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 02 00:46:22.789 INFO kablam! error: build failed
Sep 02 00:46:22.791 INFO kablam! su: No module specific data is present
Sep 02 00:46:23.275 INFO running `"docker" "rm" "-f" "735f608237b7763f3e35faf3d3331e6d5f96f015083099d7096b1b453536b501"`
Sep 02 00:46:23.448 INFO blam! 735f608237b7763f3e35faf3d3331e6d5f96f015083099d7096b1b453536b501