Aug 02 12:49:19.529 INFO checking classif-0.0.2 against 1.27.2 for lazy_static-1
Aug 02 12:49:19.529 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:49:19.529 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:49:19.530 INFO running `"docker" "create" "-v" "/tmp/crater.8dvfahS47DO1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 12:49:19.776 INFO blam! 7ef9ec08b433783e679fe4f4a384c092694bbbe888450f17746275f3be7c8b9a
Aug 02 12:49:19.777 INFO running `"docker" "start" "-a" "7ef9ec08b433783e679fe4f4a384c092694bbbe888450f17746275f3be7c8b9a"`
Aug 02 12:49:21.049 INFO kablam!     Checking classif v0.0.2 (file:///source)
Aug 02 12:49:21.618 INFO kablam! warning: variable does not need to be mutable
Aug 02 12:49:21.618 INFO kablam!   --> src/jenks.rs:25:13
Aug 02 12:49:21.618 INFO kablam!    |
Aug 02 12:49:21.618 INFO kablam! 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
Aug 02 12:49:21.618 INFO kablam!    |             ----^
Aug 02 12:49:21.618 INFO kablam!    |             |
Aug 02 12:49:21.618 INFO kablam!    |             help: remove this `mut`
Aug 02 12:49:21.618 INFO kablam!    |
Aug 02 12:49:21.618 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 02 12:49:21.618 INFO kablam! 
Aug 02 12:49:21.671 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Aug 02 12:49:21.671 INFO kablam!  --> src/stats.rs:8:5
Aug 02 12:49:21.671 INFO kablam!   |
Aug 02 12:49:21.671 INFO kablam! 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
Aug 02 12:49:21.671 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:49:21.671 INFO kablam!   |
Aug 02 12:49:21.672 INFO kablam!   = note: #[warn(unused_must_use)] on by default
Aug 02 12:49:21.672 INFO kablam!   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Aug 02 12:49:21.672 INFO kablam! 
Aug 02 12:49:21.991 INFO kablam! warning: variable does not need to be mutable
Aug 02 12:49:21.991 INFO kablam!   --> src/jenks.rs:25:13
Aug 02 12:49:21.991 INFO kablam!    |
Aug 02 12:49:21.991 INFO kablam! 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
Aug 02 12:49:21.991 INFO kablam!    |             ----^
Aug 02 12:49:21.991 INFO kablam!    |             |
Aug 02 12:49:21.991 INFO kablam!    |             help: remove this `mut`
Aug 02 12:49:21.991 INFO kablam!    |
Aug 02 12:49:21.991 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 02 12:49:21.991 INFO kablam! 
Aug 02 12:49:22.025 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Aug 02 12:49:22.028 INFO kablam!  --> src/stats.rs:8:5
Aug 02 12:49:22.028 INFO kablam!   |
Aug 02 12:49:22.028 INFO kablam! 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
Aug 02 12:49:22.028 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:49:22.028 INFO kablam!   |
Aug 02 12:49:22.028 INFO kablam!   = note: #[warn(unused_must_use)] on by default
Aug 02 12:49:22.028 INFO kablam!   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Aug 02 12:49:22.028 INFO kablam! 
Aug 02 12:49:22.212 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:49:22.212 INFO kablam!  --> benches/benchmark.rs:1:1
Aug 02 12:49:22.212 INFO kablam!   |
Aug 02 12:49:22.212 INFO kablam! 1 | #![feature(test)]
Aug 02 12:49:22.212 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 12:49:22.212 INFO kablam! 
Aug 02 12:49:22.212 INFO kablam! error: aborting due to previous error
Aug 02 12:49:22.212 INFO kablam! 
Aug 02 12:49:22.212 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:49:22.219 INFO kablam! error: Could not compile `classif`.
Aug 02 12:49:22.219 INFO kablam! 
Aug 02 12:49:22.219 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 12:49:22.220 INFO kablam! su: No module specific data is present
Aug 02 12:49:23.144 INFO running `"docker" "rm" "-f" "7ef9ec08b433783e679fe4f4a384c092694bbbe888450f17746275f3be7c8b9a"`
Aug 02 12:49:23.279 INFO blam! 7ef9ec08b433783e679fe4f4a384c092694bbbe888450f17746275f3be7c8b9a