Aug 01 18:22:42.936 INFO checking xxcalc-0.2.1 against 1.27.2 for lazy_static-1
Aug 01 18:22:42.936 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:22:42.936 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:22:42.936 INFO running `"docker" "create" "-v" "/tmp/crater.NDEDYEP3XS5d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 18:22:43.138 INFO blam! 524438c1da81607ccbaf89e9d8a27eac2ee682c507d7e3093a0a68106dbdd83e
Aug 01 18:22:43.140 INFO running `"docker" "start" "-a" "524438c1da81607ccbaf89e9d8a27eac2ee682c507d7e3093a0a68106dbdd83e"`
Aug 01 18:22:44.256 INFO kablam!     Checking xxcalc v0.2.1 (file:///source)
Aug 01 18:22:44.669 INFO kablam! warning: unused macro definition
Aug 01 18:22:44.669 INFO kablam!    --> src/tokenizer.rs:267:1
Aug 01 18:22:44.669 INFO kablam!     |
Aug 01 18:22:44.669 INFO kablam! 267 | / macro_rules! tokenize {
Aug 01 18:22:44.669 INFO kablam! 268 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
Aug 01 18:22:44.669 INFO kablam! 269 | | }
Aug 01 18:22:44.669 INFO kablam!     | |_^
Aug 01 18:22:44.670 INFO kablam!     |
Aug 01 18:22:44.670 INFO kablam!     = note: #[warn(unused_macros)] on by default
Aug 01 18:22:44.670 INFO kablam! 
Aug 01 18:22:44.670 INFO kablam! warning: unused macro definition
Aug 01 18:22:44.670 INFO kablam!    --> src/tokenizer.rs:271:1
Aug 01 18:22:44.670 INFO kablam!     |
Aug 01 18:22:44.670 INFO kablam! 271 | / macro_rules! tokenize_ref {
Aug 01 18:22:44.670 INFO kablam! 272 | |   ($x:expr) => (Tokenizer::default().process($x))
Aug 01 18:22:44.670 INFO kablam! 273 | | }
Aug 01 18:22:44.670 INFO kablam!     | |_^
Aug 01 18:22:44.670 INFO kablam! 
Aug 01 18:22:44.948 INFO kablam! warning: unused macro definition
Aug 01 18:22:44.948 INFO kablam!    --> src/tokenizer.rs:267:1
Aug 01 18:22:44.948 INFO kablam!     |
Aug 01 18:22:44.948 INFO kablam! 267 | / macro_rules! tokenize {
Aug 01 18:22:44.948 INFO kablam! 268 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
Aug 01 18:22:44.948 INFO kablam! 269 | | }
Aug 01 18:22:44.948 INFO kablam!     | |_^
Aug 01 18:22:44.948 INFO kablam!     |
Aug 01 18:22:44.948 INFO kablam!     = note: #[warn(unused_macros)] on by default
Aug 01 18:22:44.948 INFO kablam! 
Aug 01 18:22:45.479 INFO kablam! warning: unused arithmetic operation which must be used
Aug 01 18:22:45.479 INFO kablam!    --> src/polynomial.rs:416:5
Aug 01 18:22:45.479 INFO kablam!     |
Aug 01 18:22:45.479 INFO kablam! 416 |     self + &other;
Aug 01 18:22:45.479 INFO kablam!     |     ^^^^^^^^^^^^^
Aug 01 18:22:45.479 INFO kablam!     |
Aug 01 18:22:45.479 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 01 18:22:45.479 INFO kablam! 
Aug 01 18:22:45.480 INFO kablam! warning: unused arithmetic operation which must be used
Aug 01 18:22:45.480 INFO kablam!    --> src/polynomial.rs:500:5
Aug 01 18:22:45.480 INFO kablam!     |
Aug 01 18:22:45.480 INFO kablam! 500 |     self - &other;
Aug 01 18:22:45.480 INFO kablam!     |     ^^^^^^^^^^^^^
Aug 01 18:22:45.480 INFO kablam! 
Aug 01 18:22:45.480 INFO kablam! warning: unused arithmetic operation which must be used
Aug 01 18:22:45.480 INFO kablam!    --> src/polynomial.rs:596:5
Aug 01 18:22:45.480 INFO kablam!     |
Aug 01 18:22:45.480 INFO kablam! 596 |     self * &other;
Aug 01 18:22:45.480 INFO kablam!     |     ^^^^^^^^^^^^^
Aug 01 18:22:45.480 INFO kablam! 
Aug 01 18:22:45.481 INFO kablam! warning: unused return value of `std::ops::Mul::mul` which must be used
Aug 01 18:22:45.481 INFO kablam!    --> src/polynomial.rs:618:5
Aug 01 18:22:45.481 INFO kablam!     |
Aug 01 18:22:45.481 INFO kablam! 618 |     self.mul(other);
Aug 01 18:22:45.481 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Aug 01 18:22:45.481 INFO kablam! 
Aug 01 18:22:46.145 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:22:46.145 INFO kablam!  --> benches/evaluator.rs:1:1
Aug 01 18:22:46.145 INFO kablam!   |
Aug 01 18:22:46.145 INFO kablam! 1 | #![feature(test)]
Aug 01 18:22:46.145 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 18:22:46.146 INFO kablam! 
Aug 01 18:22:46.146 INFO kablam! error: aborting due to previous error
Aug 01 18:22:46.147 INFO kablam! 
Aug 01 18:22:46.147 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:22:46.158 INFO kablam! error: Could not compile `xxcalc`.
Aug 01 18:22:46.159 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 18:22:46.273 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:22:46.273 INFO kablam!  --> benches/polynomial_calculator.rs:1:1
Aug 01 18:22:46.273 INFO kablam!   |
Aug 01 18:22:46.273 INFO kablam! 1 | #![feature(test)]
Aug 01 18:22:46.273 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 18:22:46.273 INFO kablam! 
Aug 01 18:22:46.274 INFO kablam! error: aborting due to previous error
Aug 01 18:22:46.274 INFO kablam! 
Aug 01 18:22:46.274 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:22:46.287 INFO kablam! error: Could not compile `xxcalc`.
Aug 01 18:22:46.287 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 18:22:46.368 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:22:46.368 INFO kablam!  --> benches/tokenizer.rs:1:1
Aug 01 18:22:46.368 INFO kablam!   |
Aug 01 18:22:46.368 INFO kablam! 1 | #![feature(test)]
Aug 01 18:22:46.368 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 18:22:46.368 INFO kablam! 
Aug 01 18:22:46.369 INFO kablam! error: aborting due to previous error
Aug 01 18:22:46.369 INFO kablam! 
Aug 01 18:22:46.370 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:22:46.381 INFO kablam! error: Could not compile `xxcalc`.
Aug 01 18:22:46.381 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 18:22:46.421 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:22:46.421 INFO kablam!  --> benches/parser.rs:1:1
Aug 01 18:22:46.421 INFO kablam!   |
Aug 01 18:22:46.421 INFO kablam! 1 | #![feature(test)]
Aug 01 18:22:46.421 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 18:22:46.422 INFO kablam! 
Aug 01 18:22:46.422 INFO kablam! error: aborting due to previous error
Aug 01 18:22:46.422 INFO kablam! 
Aug 01 18:22:46.422 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:22:46.434 INFO kablam! error: Could not compile `xxcalc`.
Aug 01 18:22:46.434 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 18:22:48.237 INFO kablam! warning: unused arithmetic operation which must be used
Aug 01 18:22:48.237 INFO kablam!    --> src/polynomial.rs:416:5
Aug 01 18:22:48.237 INFO kablam!     |
Aug 01 18:22:48.237 INFO kablam! 416 |     self + &other;
Aug 01 18:22:48.237 INFO kablam!     |     ^^^^^^^^^^^^^
Aug 01 18:22:48.238 INFO kablam!     |
Aug 01 18:22:48.238 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 01 18:22:48.238 INFO kablam! 
Aug 01 18:22:48.238 INFO kablam! warning: unused arithmetic operation which must be used
Aug 01 18:22:48.238 INFO kablam!    --> src/polynomial.rs:500:5
Aug 01 18:22:48.238 INFO kablam!     |
Aug 01 18:22:48.238 INFO kablam! 500 |     self - &other;
Aug 01 18:22:48.238 INFO kablam!     |     ^^^^^^^^^^^^^
Aug 01 18:22:48.238 INFO kablam! 
Aug 01 18:22:48.239 INFO kablam! warning: unused arithmetic operation which must be used
Aug 01 18:22:48.239 INFO kablam!    --> src/polynomial.rs:596:5
Aug 01 18:22:48.239 INFO kablam!     |
Aug 01 18:22:48.239 INFO kablam! 596 |     self * &other;
Aug 01 18:22:48.239 INFO kablam!     |     ^^^^^^^^^^^^^
Aug 01 18:22:48.239 INFO kablam! 
Aug 01 18:22:48.239 INFO kablam! warning: unused return value of `std::ops::Mul::mul` which must be used
Aug 01 18:22:48.239 INFO kablam!    --> src/polynomial.rs:618:5
Aug 01 18:22:48.240 INFO kablam!     |
Aug 01 18:22:48.240 INFO kablam! 618 |     self.mul(other);
Aug 01 18:22:48.240 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Aug 01 18:22:48.240 INFO kablam! 
Aug 01 18:22:48.341 INFO kablam! error: build failed
Aug 01 18:22:48.342 INFO kablam! su: No module specific data is present
Aug 01 18:22:48.880 INFO running `"docker" "rm" "-f" "524438c1da81607ccbaf89e9d8a27eac2ee682c507d7e3093a0a68106dbdd83e"`
Aug 01 18:22:49.066 INFO blam! 524438c1da81607ccbaf89e9d8a27eac2ee682c507d7e3093a0a68106dbdd83e