Aug 31 06:40:12.779 INFO checking UnicodeSnowman/writing_an_interpreter_in_rust against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 06:40:12.779 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 06:40:12.779 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-2/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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=500" "-e" "CMD=cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 06:40:12.922 INFO blam! 7e29cb3010c6a45ba67237616a370d48311142cb9f58b831a79c03ddb648e1dc
Aug 31 06:40:12.923 INFO running `"docker" "start" "-a" "7e29cb3010c6a45ba67237616a370d48311142cb9f58b831a79c03ddb648e1dc"`
Aug 31 06:40:13.463 INFO kablam!     Checking writing_an_interpreter_in_rust v0.1.0 (file:///source)
Aug 31 06:40:13.707 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Aug 31 06:40:13.707 INFO kablam!   --> src/ast.rs:16:5
Aug 31 06:40:13.707 INFO kablam!    |
Aug 31 06:40:13.707 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Aug 31 06:40:13.707 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 06:40:13.707 INFO kablam!    |
Aug 31 06:40:13.707 INFO kablam!    = note: #[warn(private_in_public)] on by default
Aug 31 06:40:13.707 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!
Aug 31 06:40:13.707 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Aug 31 06:40:13.707 INFO kablam! 
Aug 31 06:40:13.708 INFO kablam! warning: unused variable: `blah`
Aug 31 06:40:13.709 INFO kablam!   --> src/parser.rs:26:13
Aug 31 06:40:13.709 INFO kablam!    |
Aug 31 06:40:13.709 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 31 06:40:13.709 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Aug 31 06:40:13.709 INFO kablam!    |
Aug 31 06:40:13.709 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 31 06:40:13.709 INFO kablam! 
Aug 31 06:40:13.729 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Aug 31 06:40:13.729 INFO kablam!   --> src/parser.rs:37:18
Aug 31 06:40:13.730 INFO kablam!    |
Aug 31 06:40:13.730 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 31 06:40:13.730 INFO kablam!    |                    ----- immutable borrow occurs here
Aug 31 06:40:13.730 INFO kablam! ...
Aug 31 06:40:13.730 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Aug 31 06:40:13.730 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Aug 31 06:40:13.730 INFO kablam! 38 |     }
Aug 31 06:40:13.730 INFO kablam!    |     - immutable borrow ends here
Aug 31 06:40:13.730 INFO kablam! 
Aug 31 06:40:13.733 INFO kablam! error: aborting due to previous error
Aug 31 06:40:13.733 INFO kablam! 
Aug 31 06:40:13.733 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Aug 31 06:40:13.739 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Aug 31 06:40:13.739 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 31 06:40:13.883 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Aug 31 06:40:13.883 INFO kablam!   --> src/ast.rs:16:5
Aug 31 06:40:13.883 INFO kablam!    |
Aug 31 06:40:13.883 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Aug 31 06:40:13.883 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 06:40:13.883 INFO kablam!    |
Aug 31 06:40:13.883 INFO kablam!    = note: #[warn(private_in_public)] on by default
Aug 31 06:40:13.883 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!
Aug 31 06:40:13.883 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Aug 31 06:40:13.884 INFO kablam! 
Aug 31 06:40:13.885 INFO kablam! warning: unused variable: `blah`
Aug 31 06:40:13.885 INFO kablam!   --> src/parser.rs:26:13
Aug 31 06:40:13.885 INFO kablam!    |
Aug 31 06:40:13.885 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 31 06:40:13.885 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Aug 31 06:40:13.885 INFO kablam!    |
Aug 31 06:40:13.885 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 31 06:40:13.885 INFO kablam! 
Aug 31 06:40:13.913 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Aug 31 06:40:13.913 INFO kablam!   --> src/parser.rs:37:18
Aug 31 06:40:13.913 INFO kablam!    |
Aug 31 06:40:13.913 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 31 06:40:13.913 INFO kablam!    |                    ----- immutable borrow occurs here
Aug 31 06:40:13.913 INFO kablam! ...
Aug 31 06:40:13.913 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Aug 31 06:40:13.913 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Aug 31 06:40:13.913 INFO kablam! 38 |     }
Aug 31 06:40:13.913 INFO kablam!    |     - immutable borrow ends here
Aug 31 06:40:13.913 INFO kablam! 
Aug 31 06:40:13.916 INFO kablam! error: aborting due to previous error
Aug 31 06:40:13.916 INFO kablam! 
Aug 31 06:40:13.917 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Aug 31 06:40:13.923 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Aug 31 06:40:13.923 INFO kablam! 
Aug 31 06:40:13.923 INFO kablam! To learn more, run the command again with --verbose.
Aug 31 06:40:13.924 INFO kablam! su: No module specific data is present
Aug 31 06:40:14.258 INFO running `"docker" "rm" "-f" "7e29cb3010c6a45ba67237616a370d48311142cb9f58b831a79c03ddb648e1dc"`
Aug 31 06:40:14.370 INFO blam! 7e29cb3010c6a45ba67237616a370d48311142cb9f58b831a79c03ddb648e1dc