Aug 02 01:34:20.927 INFO checking quantiles-0.7.1 against 1.27.2 for lazy_static-1
Aug 02 01:34:20.927 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:34:20.927 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 01:34:20.927 INFO running `"docker" "create" "-v" "/tmp/crater.0nz5ONtBK39m:/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 02 01:34:21.177 INFO blam! 13e4493234ba5a310e09758b7ca7c778eb4123c223f7fe00c7452a09358fd1f8
Aug 02 01:34:21.179 INFO running `"docker" "start" "-a" "13e4493234ba5a310e09758b7ca7c778eb4123c223f7fe00c7452a09358fd1f8"`
Aug 02 01:34:22.191 INFO kablam!     Checking quantiles v0.7.1 (file:///source)
Aug 02 01:34:25.058 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 01:34:25.058 INFO kablam!  --> benches/ckms.rs:1:1
Aug 02 01:34:25.058 INFO kablam!   |
Aug 02 01:34:25.058 INFO kablam! 1 | #![feature(test)]
Aug 02 01:34:25.058 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 01:34:25.072 INFO kablam! 
Aug 02 01:34:25.073 INFO kablam! error: aborting due to previous error
Aug 02 01:34:25.073 INFO kablam! 
Aug 02 01:34:25.073 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 01:34:25.085 INFO kablam! error: Could not compile `quantiles`.
Aug 02 01:34:25.085 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 01:34:27.924 INFO kablam! error: build failed
Aug 02 01:34:27.938 INFO kablam! su: No module specific data is present
Aug 02 01:34:28.603 INFO running `"docker" "rm" "-f" "13e4493234ba5a310e09758b7ca7c778eb4123c223f7fe00c7452a09358fd1f8"`
Aug 02 01:34:28.763 INFO blam! 13e4493234ba5a310e09758b7ca7c778eb4123c223f7fe00c7452a09358fd1f8