Aug 02 04:27:50.670 INFO checking merkle_tree-0.1.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 04:27:50.670 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:27:50.670 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:27:50.670 INFO running `"docker" "create" "-v" "/tmp/crater.oBOGC1zmnEFX:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2+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 02 04:27:50.891 INFO blam! 6380212aa8939b8cf9a3d7b10e3d14021b04279d97742654f5d83f4047a185b2
Aug 02 04:27:50.893 INFO running `"docker" "start" "-a" "6380212aa8939b8cf9a3d7b10e3d14021b04279d97742654f5d83f4047a185b2"`
Aug 02 04:27:52.730 INFO kablam!     Checking rayon v0.7.1
Aug 02 04:27:56.632 INFO kablam!     Checking merkle_tree v0.1.0 (file:///source)
Aug 02 04:28:02.413 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:28:02.413 INFO kablam!  --> tests/bench_build_tree.rs:1:1
Aug 02 04:28:02.413 INFO kablam!   |
Aug 02 04:28:02.413 INFO kablam! 1 | #![feature(test)]
Aug 02 04:28:02.413 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:28:02.413 INFO kablam! 
Aug 02 04:28:02.414 INFO kablam! error: aborting due to previous error
Aug 02 04:28:02.414 INFO kablam! 
Aug 02 04:28:02.415 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:28:02.424 INFO kablam! error: Could not compile `merkle_tree`.
Aug 02 04:28:02.424 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:28:02.679 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:28:02.679 INFO kablam!  --> tests/bench_append.rs:1:1
Aug 02 04:28:02.679 INFO kablam!   |
Aug 02 04:28:02.679 INFO kablam! 1 | #![feature(test)]
Aug 02 04:28:02.679 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:28:02.679 INFO kablam! 
Aug 02 04:28:02.680 INFO kablam! error: aborting due to previous error
Aug 02 04:28:02.680 INFO kablam! 
Aug 02 04:28:02.680 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:28:02.700 INFO kablam! error: Could not compile `merkle_tree`.
Aug 02 04:28:02.700 INFO kablam! 
Aug 02 04:28:02.700 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 04:28:02.704 INFO kablam! su: No module specific data is present
Aug 02 04:28:03.284 INFO running `"docker" "rm" "-f" "6380212aa8939b8cf9a3d7b10e3d14021b04279d97742654f5d83f4047a185b2"`
Aug 02 04:28:03.437 INFO blam! 6380212aa8939b8cf9a3d7b10e3d14021b04279d97742654f5d83f4047a185b2