Aug 01 23:57:34.379 INFO checking ruma-api-0.5.0 against 1.27.2 for lazy_static-1
Aug 01 23:57:34.379 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:34.379 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:34.379 INFO running `"docker" "create" "-v" "/tmp/crater.Xl5PV01vegMi:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 23:57:34.632 INFO blam! 5935e581d9e977357fdffd4f087adc38778ee54310c4171c5b40386f6ec02d94
Aug 01 23:57:34.634 INFO running `"docker" "start" "-a" "5935e581d9e977357fdffd4f087adc38778ee54310c4171c5b40386f6ec02d94"`
Aug 01 23:57:35.841 INFO kablam!     Checking ruma-identifiers v0.11.0
Aug 01 23:57:35.843 INFO kablam!     Checking ruma-api v0.5.0 (file:///source)
Aug 01 23:57:37.253 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:37.254 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-identifiers-0.11.0/src/lib.rs:4:1
Aug 01 23:57:37.254 INFO kablam!   |
Aug 01 23:57:37.254 INFO kablam! 4 | #![feature(try_from)]
Aug 01 23:57:37.254 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:37.254 INFO kablam! 
Aug 01 23:57:37.266 INFO kablam! error: aborting due to previous error
Aug 01 23:57:37.267 INFO kablam! 
Aug 01 23:57:37.267 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:37.279 INFO kablam! error: Could not compile `ruma-identifiers`.
Aug 01 23:57:37.279 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:37.392 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:37.392 INFO kablam!   --> src/lib.rs:13:1
Aug 01 23:57:37.392 INFO kablam!    |
Aug 01 23:57:37.392 INFO kablam! 13 | #![feature(try_from)]
Aug 01 23:57:37.392 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:37.392 INFO kablam! 
Aug 01 23:57:37.393 INFO kablam! error: aborting due to previous error
Aug 01 23:57:37.393 INFO kablam! 
Aug 01 23:57:37.394 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:37.409 INFO kablam! error: Could not compile `ruma-api`.
Aug 01 23:57:37.409 INFO kablam! 
Aug 01 23:57:37.409 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 23:57:37.411 INFO kablam! su: No module specific data is present
Aug 01 23:57:37.948 INFO running `"docker" "rm" "-f" "5935e581d9e977357fdffd4f087adc38778ee54310c4171c5b40386f6ec02d94"`
Aug 01 23:57:38.109 INFO blam! 5935e581d9e977357fdffd4f087adc38778ee54310c4171c5b40386f6ec02d94