Sep 17 13:46:28.607 INFO checking UnicodeSnowman/writing_an_interpreter_in_rust against master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690 for pr-54033
Sep 17 13:46:28.607 INFO running: cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets
Sep 17 13:46:28.607 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54033/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-3/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/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" "-e" "USER_ID=1000" "-e" "CMD=cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 13:46:29.054 INFO blam! 4858f2e035fa204c219eb23e2fce786620543858a5f77d7da9d5b79604bab8ac
Sep 17 13:46:29.059 INFO running `"docker" "start" "-a" "4858f2e035fa204c219eb23e2fce786620543858a5f77d7da9d5b79604bab8ac"`
Sep 17 13:46:30.539 INFO kablam! usermod: no changes
Sep 17 13:46:30.595 INFO kablam!     Checking writing_an_interpreter_in_rust v0.1.0 (/source)
Sep 17 13:46:30.816 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Sep 17 13:46:30.816 INFO kablam!   --> src/ast.rs:16:5
Sep 17 13:46:30.816 INFO kablam!    |
Sep 17 13:46:30.816 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Sep 17 13:46:30.816 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 17 13:46:30.816 INFO kablam!    |
Sep 17 13:46:30.816 INFO kablam!    = note: #[warn(private_in_public)] on by default
Sep 17 13:46:30.816 INFO kablam!    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Sep 17 13:46:30.816 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Sep 17 13:46:30.816 INFO kablam! 
Sep 17 13:46:30.823 INFO kablam! warning: unused variable: `blah`
Sep 17 13:46:30.823 INFO kablam!   --> src/parser.rs:26:13
Sep 17 13:46:30.823 INFO kablam!    |
Sep 17 13:46:30.823 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 17 13:46:30.823 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Sep 17 13:46:30.823 INFO kablam!    |
Sep 17 13:46:30.823 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 17 13:46:30.823 INFO kablam! 
Sep 17 13:46:30.835 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Sep 17 13:46:30.835 INFO kablam!   --> src/parser.rs:37:18
Sep 17 13:46:30.835 INFO kablam!    |
Sep 17 13:46:30.835 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 17 13:46:30.835 INFO kablam!    |                    ----- immutable borrow occurs here
Sep 17 13:46:30.835 INFO kablam! ...
Sep 17 13:46:30.835 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Sep 17 13:46:30.835 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Sep 17 13:46:30.835 INFO kablam! 38 |     }
Sep 17 13:46:30.835 INFO kablam!    |     - immutable borrow ends here
Sep 17 13:46:30.835 INFO kablam! 
Sep 17 13:46:30.843 INFO kablam! error: aborting due to previous error
Sep 17 13:46:30.843 INFO kablam! 
Sep 17 13:46:30.843 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Sep 17 13:46:30.847 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Sep 17 13:46:30.847 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 17 13:46:31.038 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Sep 17 13:46:31.038 INFO kablam!   --> src/ast.rs:16:5
Sep 17 13:46:31.038 INFO kablam!    |
Sep 17 13:46:31.038 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Sep 17 13:46:31.038 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 17 13:46:31.038 INFO kablam!    |
Sep 17 13:46:31.038 INFO kablam!    = note: #[warn(private_in_public)] on by default
Sep 17 13:46:31.039 INFO kablam!    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Sep 17 13:46:31.039 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Sep 17 13:46:31.039 INFO kablam! 
Sep 17 13:46:31.041 INFO kablam! warning: unused variable: `blah`
Sep 17 13:46:31.042 INFO kablam!   --> src/parser.rs:26:13
Sep 17 13:46:31.042 INFO kablam!    |
Sep 17 13:46:31.042 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 17 13:46:31.043 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Sep 17 13:46:31.043 INFO kablam!    |
Sep 17 13:46:31.044 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 17 13:46:31.044 INFO kablam! 
Sep 17 13:46:31.075 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Sep 17 13:46:31.075 INFO kablam!   --> src/parser.rs:37:18
Sep 17 13:46:31.075 INFO kablam!    |
Sep 17 13:46:31.075 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 17 13:46:31.075 INFO kablam!    |                    ----- immutable borrow occurs here
Sep 17 13:46:31.075 INFO kablam! ...
Sep 17 13:46:31.075 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Sep 17 13:46:31.075 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Sep 17 13:46:31.075 INFO kablam! 38 |     }
Sep 17 13:46:31.075 INFO kablam!    |     - immutable borrow ends here
Sep 17 13:46:31.075 INFO kablam! 
Sep 17 13:46:31.083 INFO kablam! error: aborting due to previous error
Sep 17 13:46:31.083 INFO kablam! 
Sep 17 13:46:31.083 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Sep 17 13:46:31.089 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Sep 17 13:46:31.089 INFO kablam! 
Sep 17 13:46:31.089 INFO kablam! To learn more, run the command again with --verbose.
Sep 17 13:46:31.090 INFO kablam! su: No module specific data is present
Sep 17 13:46:32.029 INFO running `"docker" "rm" "-f" "4858f2e035fa204c219eb23e2fce786620543858a5f77d7da9d5b79604bab8ac"`
Sep 17 13:46:32.348 INFO blam! 4858f2e035fa204c219eb23e2fce786620543858a5f77d7da9d5b79604bab8ac