Sep 02 17:38:24.253 INFO checking const-concat-0.1.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 02 17:38:24.253 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 17:38:24.254 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-0/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 17:38:24.437 INFO blam! df8dd7ac1a95b66f1c629eaea26a0b68f0b352f6ac546f6f9adbc6e3b3907953
Sep 02 17:38:24.439 INFO running `"docker" "start" "-a" "df8dd7ac1a95b66f1c629eaea26a0b68f0b352f6ac546f6f9adbc6e3b3907953"`
Sep 02 17:38:25.075 INFO kablam!     Checking const-concat v0.1.0 (file:///source)
Sep 02 17:38:25.821 INFO kablam! error[E0658]: unions in const fn are unstable (see issue #51909)
Sep 02 17:38:25.821 INFO kablam!   --> src/lib.rs:10:5
Sep 02 17:38:25.821 INFO kablam!    |
Sep 02 17:38:25.821 INFO kablam! 10 |     Transmute { from }.to
Sep 02 17:38:25.821 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Sep 02 17:38:25.821 INFO kablam!    |
Sep 02 17:38:25.821 INFO kablam!    = help: add #![feature(const_fn_union)] to the crate attributes to enable
Sep 02 17:38:25.821 INFO kablam! 
Sep 02 17:38:25.824 INFO kablam! error: aborting due to previous error
Sep 02 17:38:25.824 INFO kablam! 
Sep 02 17:38:25.824 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 02 17:38:25.832 INFO kablam! error: Could not compile `const-concat`.
Sep 02 17:38:25.832 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 02 17:38:25.893 INFO kablam! error[E0658]: unions in const fn are unstable (see issue #51909)
Sep 02 17:38:25.893 INFO kablam!   --> src/lib.rs:10:5
Sep 02 17:38:25.893 INFO kablam!    |
Sep 02 17:38:25.893 INFO kablam! 10 |     Transmute { from }.to
Sep 02 17:38:25.894 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Sep 02 17:38:25.894 INFO kablam!    |
Sep 02 17:38:25.894 INFO kablam!    = help: add #![feature(const_fn_union)] to the crate attributes to enable
Sep 02 17:38:25.894 INFO kablam! 
Sep 02 17:38:25.987 INFO kablam! error[E0308]: mismatched types
Sep 02 17:38:25.987 INFO kablam!   --> src/lib.rs:33:13
Sep 02 17:38:25.987 INFO kablam!    |
Sep 02 17:38:25.987 INFO kablam! 33 | /             &$crate::concat::<
Sep 02 17:38:25.987 INFO kablam! 34 | |                 [u8; $a.len()],
Sep 02 17:38:25.987 INFO kablam! 35 | |                 [u8; $b.len()],
Sep 02 17:38:25.987 INFO kablam! 36 | |                 [u8; $a.len() + $b.len()],
Sep 02 17:38:25.987 INFO kablam! 37 | |             >($a.as_bytes(), $b.as_bytes())
Sep 02 17:38:25.987 INFO kablam!    | |___________________________________________^ expected slice, found array
Sep 02 17:38:25.987 INFO kablam! ...
Sep 02 17:38:25.987 INFO kablam! 57 |           const GREETING: &str = const_concat!(SALUTATION, ", ", TARGET, "!");
Sep 02 17:38:25.987 INFO kablam!    |                                  -------------------------------------------- in this macro invocation
Sep 02 17:38:25.987 INFO kablam!    |
Sep 02 17:38:25.987 INFO kablam!    = note: expected type `&'static [u8]`
Sep 02 17:38:25.988 INFO kablam!               found type `&[u8; _]`
Sep 02 17:38:25.988 INFO kablam! 
Sep 02 17:38:26.003 INFO kablam! error: aborting due to 2 previous errors
Sep 02 17:38:26.003 INFO kablam! 
Sep 02 17:38:26.003 INFO kablam! Some errors occurred: E0308, E0658.
Sep 02 17:38:26.003 INFO kablam! For more information about an error, try `rustc --explain E0308`.
Sep 02 17:38:26.010 INFO kablam! error: Could not compile `const-concat`.
Sep 02 17:38:26.010 INFO kablam! 
Sep 02 17:38:26.010 INFO kablam! To learn more, run the command again with --verbose.
Sep 02 17:38:26.012 INFO kablam! su: No module specific data is present
Sep 02 17:38:26.393 INFO running `"docker" "rm" "-f" "df8dd7ac1a95b66f1c629eaea26a0b68f0b352f6ac546f6f9adbc6e3b3907953"`
Sep 02 17:38:26.485 INFO blam! df8dd7ac1a95b66f1c629eaea26a0b68f0b352f6ac546f6f9adbc6e3b3907953