Aug 30 20:00:12.470 INFO checking derivative-1.0.0 against try#bc5a74802bb3ffc82f51ef04bca58d64220124c4 for pr-53699
Aug 30 20:00:12.470 INFO running: cargo +bc5a74802bb3ffc82f51ef04bca58d64220124c4-alt check --frozen --all --all-targets
Aug 30 20:00:12.470 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53699/try#bc5a74802bb3ffc82f51ef04bca58d64220124c4:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-2/try#bc5a74802bb3ffc82f51ef04bca58d64220124c4:/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 +bc5a74802bb3ffc82f51ef04bca58d64220124c4-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 20:00:12.613 INFO blam! 601f42ec3833ee34eb0342b94d0f43ad044af36c3caed6c8c969b9e96b7e05ca
Aug 30 20:00:12.615 INFO running `"docker" "start" "-a" "601f42ec3833ee34eb0342b94d0f43ad044af36c3caed6c8c969b9e96b7e05ca"`
Aug 30 20:00:13.220 INFO kablam!     Checking syn v0.10.8
Aug 30 20:00:13.220 INFO kablam!    Compiling derivative v1.0.0 (file:///source)
Aug 30 20:00:41.962 INFO kablam! warning: unused comparison which must be used
Aug 30 20:00:41.962 INFO kablam!   --> tests/rustc-deriving-meta.rs:31:5
Aug 30 20:00:41.962 INFO kablam!    |
Aug 30 20:00:41.962 INFO kablam! 31 |     a == a;    // check for PartialEq impl w/o testing its correctness
Aug 30 20:00:41.962 INFO kablam!    |     ^^^^^^
Aug 30 20:00:41.986 INFO kablam!    |
Aug 30 20:00:41.987 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Aug 30 20:00:41.987 INFO kablam! 
Aug 30 20:00:42.024 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Aug 30 20:00:42.024 INFO kablam!   --> tests/rustc-deriving-meta.rs:32:5
Aug 30 20:00:42.025 INFO kablam!    |
Aug 30 20:00:42.025 INFO kablam! 32 |     a.clone(); // check for Clone impl w/o testing its correctness
Aug 30 20:00:42.025 INFO kablam!    |     ^^^^^^^^^^
Aug 30 20:00:42.046 INFO kablam!    |
Aug 30 20:00:42.046 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Aug 30 20:00:42.046 INFO kablam! 
Aug 30 20:00:42.229 INFO kablam! error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
Aug 30 20:00:42.229 INFO kablam!   --> tests/rustc-issue-25394.rs:18:24
Aug 30 20:00:42.229 INFO kablam!    |
Aug 30 20:00:42.229 INFO kablam! 18 | fn use_row(_: Row<u8>) {}
Aug 30 20:00:42.229 INFO kablam!    |                        ^ doesn't have a size known at compile-time
Aug 30 20:00:42.239 INFO kablam!    |
Aug 30 20:00:42.239 INFO kablam!    = help: within `Row<u8>`, the trait `std::marker::Sized` is not implemented for `[u8]`
Aug 30 20:00:42.239 INFO kablam!    = note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
Aug 30 20:00:42.240 INFO kablam!    = note: required because it appears within the type `Row<u8>`
Aug 30 20:00:42.240 INFO kablam!    = note: all function arguments must have a statically known size
Aug 30 20:00:42.240 INFO kablam!    = help: unsized locals are gated as an unstable feature
Aug 30 20:00:42.240 INFO kablam! 
Aug 30 20:00:42.243 INFO kablam! error: aborting due to previous error
Aug 30 20:00:42.243 INFO kablam! 
Aug 30 20:00:42.244 INFO kablam! For more information about this error, try `rustc --explain E0277`.
Aug 30 20:00:42.252 INFO kablam! error: Could not compile `derivative`.
Aug 30 20:00:42.253 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 20:00:45.066 INFO kablam! error: build failed
Aug 30 20:00:45.068 INFO kablam! su: No module specific data is present
Aug 30 20:00:45.548 INFO running `"docker" "rm" "-f" "601f42ec3833ee34eb0342b94d0f43ad044af36c3caed6c8c969b9e96b7e05ca"`
Aug 30 20:00:45.719 INFO blam! 601f42ec3833ee34eb0342b94d0f43ad044af36c3caed6c8c969b9e96b7e05ca