Aug 01 23:57:27.162 INFO checking ruma-client-api-0.1.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 23:57:27.162 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:27.162 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:27.162 INFO running `"docker" "create" "-v" "/tmp/crater.XgO3l0Kl6Toj:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+tmplazy:/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 23:57:27.360 INFO blam! 651d56d4f91c4032feb76d49c83973d5913e1c60a7d63dd33a544924cd561c33
Aug 01 23:57:27.361 INFO running `"docker" "start" "-a" "651d56d4f91c4032feb76d49c83973d5913e1c60a7d63dd33a544924cd561c33"`
Aug 01 23:57:28.749 INFO kablam!     Blocking waiting for file lock on the git checkouts
Aug 01 23:57:29.047 INFO kablam!     Checking ruma-identifiers v0.11.0
Aug 01 23:57:29.048 INFO kablam!     Checking ruma-signatures v0.4.0
Aug 01 23:57:29.049 INFO kablam!    Compiling ruma-api v0.4.0
Aug 01 23:57:29.736 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:29.736 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-identifiers-0.11.0/src/lib.rs:4:1
Aug 01 23:57:29.736 INFO kablam!   |
Aug 01 23:57:29.736 INFO kablam! 4 | #![feature(try_from)]
Aug 01 23:57:29.736 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:29.736 INFO kablam! 
Aug 01 23:57:29.739 INFO kablam! error: aborting due to previous error
Aug 01 23:57:29.739 INFO kablam! 
Aug 01 23:57:29.739 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:29.748 INFO kablam! error: Could not compile `ruma-identifiers`.
Aug 01 23:57:29.748 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:30.716 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:30.716 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-api-0.4.0/src/lib.rs:14:1
Aug 01 23:57:30.716 INFO kablam!    |
Aug 01 23:57:30.716 INFO kablam! 14 | #![feature(associated_consts, try_from)]
Aug 01 23:57:30.716 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:30.716 INFO kablam! 
Aug 01 23:57:30.717 INFO kablam! error: aborting due to previous error
Aug 01 23:57:30.717 INFO kablam! 
Aug 01 23:57:30.717 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:30.723 INFO kablam! error: Could not compile `ruma-api`.
Aug 01 23:57:30.723 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:31.162 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:31.162 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-api-0.4.0/src/lib.rs:14:1
Aug 01 23:57:31.162 INFO kablam!    |
Aug 01 23:57:31.162 INFO kablam! 14 | #![feature(associated_consts, try_from)]
Aug 01 23:57:31.162 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:31.162 INFO kablam! 
Aug 01 23:57:31.162 INFO kablam! error: aborting due to previous error
Aug 01 23:57:31.162 INFO kablam! 
Aug 01 23:57:31.162 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:31.182 INFO kablam! error: Could not compile `ruma-api`.
Aug 01 23:57:31.182 INFO kablam! 
Aug 01 23:57:31.182 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 23:57:31.183 INFO kablam! su: No module specific data is present
Aug 01 23:57:32.084 INFO running `"docker" "rm" "-f" "651d56d4f91c4032feb76d49c83973d5913e1c60a7d63dd33a544924cd561c33"`
Aug 01 23:57:32.256 INFO blam! 651d56d4f91c4032feb76d49c83973d5913e1c60a7d63dd33a544924cd561c33