Sep 19 14:35:18.334 INFO checking UnicodeSnowman/writing_an_interpreter_in_rust against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 19 14:35:18.334 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 19 14:35:18.334 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-3/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 14:35:18.691 INFO blam! a2ed9d9b1ed65640add0e62a81778e9f76a628e98be76c86aaa7b73a22fa9cf5
Sep 19 14:35:18.693 INFO running `"docker" "start" "-a" "a2ed9d9b1ed65640add0e62a81778e9f76a628e98be76c86aaa7b73a22fa9cf5"`
Sep 19 14:35:20.624 INFO kablam! usermod: no changes
Sep 19 14:35:20.711 INFO kablam!     Checking writing_an_interpreter_in_rust v0.1.0 (/source)
Sep 19 14:35:21.195 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Sep 19 14:35:21.195 INFO kablam!   --> src/ast.rs:16:5
Sep 19 14:35:21.195 INFO kablam!    |
Sep 19 14:35:21.195 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Sep 19 14:35:21.195 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 14:35:21.195 INFO kablam!    |
Sep 19 14:35:21.195 INFO kablam!    = note: #[warn(private_in_public)] on by default
Sep 19 14:35:21.195 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 19 14:35:21.195 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Sep 19 14:35:21.196 INFO kablam! 
Sep 19 14:35:21.196 INFO kablam! warning: unused variable: `blah`
Sep 19 14:35:21.196 INFO kablam!   --> src/parser.rs:26:13
Sep 19 14:35:21.196 INFO kablam!    |
Sep 19 14:35:21.196 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 19 14:35:21.196 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Sep 19 14:35:21.197 INFO kablam!    |
Sep 19 14:35:21.197 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 19 14:35:21.197 INFO kablam! 
Sep 19 14:35:21.213 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Sep 19 14:35:21.213 INFO kablam!   --> src/parser.rs:37:18
Sep 19 14:35:21.213 INFO kablam!    |
Sep 19 14:35:21.213 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 19 14:35:21.213 INFO kablam!    |                    ----- immutable borrow occurs here
Sep 19 14:35:21.213 INFO kablam! ...
Sep 19 14:35:21.213 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Sep 19 14:35:21.214 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Sep 19 14:35:21.214 INFO kablam! 38 |     }
Sep 19 14:35:21.214 INFO kablam!    |     - immutable borrow ends here
Sep 19 14:35:21.214 INFO kablam! 
Sep 19 14:35:21.219 INFO kablam! error: aborting due to previous error
Sep 19 14:35:21.219 INFO kablam! 
Sep 19 14:35:21.219 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Sep 19 14:35:21.230 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Sep 19 14:35:21.231 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 19 14:35:21.382 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Sep 19 14:35:21.382 INFO kablam!   --> src/ast.rs:16:5
Sep 19 14:35:21.383 INFO kablam!    |
Sep 19 14:35:21.383 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Sep 19 14:35:21.384 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 14:35:21.384 INFO kablam!    |
Sep 19 14:35:21.385 INFO kablam!    = note: #[warn(private_in_public)] on by default
Sep 19 14:35:21.385 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 19 14:35:21.386 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Sep 19 14:35:21.386 INFO kablam! 
Sep 19 14:35:21.391 INFO kablam! warning: unused variable: `blah`
Sep 19 14:35:21.392 INFO kablam!   --> src/parser.rs:26:13
Sep 19 14:35:21.392 INFO kablam!    |
Sep 19 14:35:21.393 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 19 14:35:21.393 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Sep 19 14:35:21.394 INFO kablam!    |
Sep 19 14:35:21.394 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 19 14:35:21.394 INFO kablam! 
Sep 19 14:35:21.419 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Sep 19 14:35:21.419 INFO kablam!   --> src/parser.rs:37:18
Sep 19 14:35:21.419 INFO kablam!    |
Sep 19 14:35:21.419 INFO kablam! 26 |         let blah = lexer.current_token();
Sep 19 14:35:21.422 INFO kablam!    |                    ----- immutable borrow occurs here
Sep 19 14:35:21.423 INFO kablam! ...
Sep 19 14:35:21.423 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Sep 19 14:35:21.423 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Sep 19 14:35:21.423 INFO kablam! 38 |     }
Sep 19 14:35:21.423 INFO kablam!    |     - immutable borrow ends here
Sep 19 14:35:21.423 INFO kablam! 
Sep 19 14:35:21.429 INFO kablam! error: aborting due to previous error
Sep 19 14:35:21.429 INFO kablam! 
Sep 19 14:35:21.429 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Sep 19 14:35:21.438 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Sep 19 14:35:21.438 INFO kablam! 
Sep 19 14:35:21.438 INFO kablam! To learn more, run the command again with --verbose.
Sep 19 14:35:21.440 INFO kablam! su: No module specific data is present
Sep 19 14:35:22.649 INFO running `"docker" "rm" "-f" "a2ed9d9b1ed65640add0e62a81778e9f76a628e98be76c86aaa7b73a22fa9cf5"`
Sep 19 14:35:22.998 INFO blam! a2ed9d9b1ed65640add0e62a81778e9f76a628e98be76c86aaa7b73a22fa9cf5