Aug 01 20:45:16.859 INFO checking tectonicdb-0.2.1 against 1.27.2 for lazy_static-1
Aug 01 20:45:16.860 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:45:16.860 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:45:16.860 INFO running `"docker" "create" "-v" "/tmp/crater.KOkJmD9jKx0K:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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 20:45:17.147 INFO blam! 7eb6dcf6b04f3bc79b624e4f65a65f71b73f2cba4cf6ec53362f6663e19bee16
Aug 01 20:45:17.150 INFO running `"docker" "start" "-a" "7eb6dcf6b04f3bc79b624e4f65a65f71b73f2cba4cf6ec53362f6663e19bee16"`
Aug 01 20:45:18.548 INFO kablam!     Checking circular-queue v0.2.0
Aug 01 20:45:18.551 INFO kablam!     Checking fern v0.4.4
Aug 01 20:45:19.985 INFO kablam!     Checking tectonicdb v0.2.1 (file:///source)
Aug 01 20:45:20.964 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:45:20.964 INFO kablam!  --> src/lib/lib.rs:1:1
Aug 01 20:45:20.964 INFO kablam!   |
Aug 01 20:45:20.964 INFO kablam! 1 | #![feature(conservative_impl_trait)]
Aug 01 20:45:20.964 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:45:20.964 INFO kablam! 
Aug 01 20:45:20.970 INFO kablam! error: aborting due to previous error
Aug 01 20:45:20.970 INFO kablam! 
Aug 01 20:45:20.970 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:45:20.978 INFO kablam! error: Could not compile `tectonicdb`.
Aug 01 20:45:20.979 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:45:21.199 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:45:21.199 INFO kablam!  --> src/lib/lib.rs:1:1
Aug 01 20:45:21.199 INFO kablam!   |
Aug 01 20:45:21.199 INFO kablam! 1 | #![feature(conservative_impl_trait)]
Aug 01 20:45:21.199 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:45:21.199 INFO kablam! 
Aug 01 20:45:21.208 INFO kablam! error: aborting due to previous error
Aug 01 20:45:21.208 INFO kablam! 
Aug 01 20:45:21.208 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:45:21.237 INFO kablam! error: Could not compile `tectonicdb`.
Aug 01 20:45:21.237 INFO kablam! 
Aug 01 20:45:21.237 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 20:45:21.239 INFO kablam! su: No module specific data is present
Aug 01 20:45:21.767 INFO running `"docker" "rm" "-f" "7eb6dcf6b04f3bc79b624e4f65a65f71b73f2cba4cf6ec53362f6663e19bee16"`
Aug 01 20:45:21.880 INFO blam! 7eb6dcf6b04f3bc79b624e4f65a65f71b73f2cba4cf6ec53362f6663e19bee16