Aug 10 20:52:22.075 INFO checking UnicodeSnowman/writing_an_interpreter_in_rust against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 10 20:52:22.075 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 10 20:52:22.075 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 10 20:52:22.075 INFO running `"docker" "create" "-v" "/tmp/crater.EBAuOMNQMGfP:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-4/try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy:/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 +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 10 20:52:22.291 INFO blam! ae1101c7304515aec467643014b2f268d0160d45210a4cb30261326b42c5246d
Aug 10 20:52:22.293 INFO running `"docker" "start" "-a" "ae1101c7304515aec467643014b2f268d0160d45210a4cb30261326b42c5246d"`
Aug 10 20:52:23.181 INFO kablam!     Checking writing_an_interpreter_in_rust v0.1.0 (file:///source)
Aug 10 20:52:23.832 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Aug 10 20:52:23.832 INFO kablam!   --> src/ast.rs:16:5
Aug 10 20:52:23.832 INFO kablam!    |
Aug 10 20:52:23.832 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Aug 10 20:52:23.832 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 10 20:52:23.833 INFO kablam!    |
Aug 10 20:52:23.833 INFO kablam!    = note: #[warn(private_in_public)] on by default
Aug 10 20:52:23.833 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 10 20:52:23.833 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Aug 10 20:52:23.833 INFO kablam! 
Aug 10 20:52:23.842 INFO kablam! warning: unused variable: `blah`
Aug 10 20:52:23.842 INFO kablam!   --> src/parser.rs:26:13
Aug 10 20:52:23.842 INFO kablam!    |
Aug 10 20:52:23.842 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 10 20:52:23.842 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Aug 10 20:52:23.842 INFO kablam!    |
Aug 10 20:52:23.843 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 10 20:52:23.843 INFO kablam! 
Aug 10 20:52:23.887 INFO kablam! warning: private type `(dyn ast::Statement + 'static)` in public interface (error E0446)
Aug 10 20:52:23.887 INFO kablam!   --> src/ast.rs:16:5
Aug 10 20:52:23.887 INFO kablam!    |
Aug 10 20:52:23.887 INFO kablam! 16 |     pub statements: Vec<Box<Statement>>
Aug 10 20:52:23.887 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 10 20:52:23.887 INFO kablam!    |
Aug 10 20:52:23.888 INFO kablam!    = note: #[warn(private_in_public)] on by default
Aug 10 20:52:23.888 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 10 20:52:23.888 INFO kablam!    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Aug 10 20:52:23.888 INFO kablam! 
Aug 10 20:52:23.889 INFO kablam! warning: unused variable: `blah`
Aug 10 20:52:23.889 INFO kablam!   --> src/parser.rs:26:13
Aug 10 20:52:23.889 INFO kablam!    |
Aug 10 20:52:23.889 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 10 20:52:23.889 INFO kablam!    |             ^^^^ help: consider using `_blah` instead
Aug 10 20:52:23.889 INFO kablam!    |
Aug 10 20:52:23.889 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 10 20:52:23.889 INFO kablam! 
Aug 10 20:52:23.947 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Aug 10 20:52:23.947 INFO kablam!   --> src/parser.rs:37:18
Aug 10 20:52:23.947 INFO kablam!    |
Aug 10 20:52:23.947 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 10 20:52:23.947 INFO kablam!    |                    ----- immutable borrow occurs here
Aug 10 20:52:23.948 INFO kablam! ...
Aug 10 20:52:23.948 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Aug 10 20:52:23.948 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Aug 10 20:52:23.948 INFO kablam! 38 |     }
Aug 10 20:52:23.948 INFO kablam!    |     - immutable borrow ends here
Aug 10 20:52:23.948 INFO kablam! 
Aug 10 20:52:23.948 INFO kablam! error[E0502]: cannot borrow `*lexer` as mutable because it is also borrowed as immutable
Aug 10 20:52:23.948 INFO kablam!   --> src/parser.rs:37:18
Aug 10 20:52:23.948 INFO kablam!    |
Aug 10 20:52:23.948 INFO kablam! 26 |         let blah = lexer.current_token();
Aug 10 20:52:23.948 INFO kablam!    |                    ----- immutable borrow occurs here
Aug 10 20:52:23.948 INFO kablam! ...
Aug 10 20:52:23.948 INFO kablam! 37 |         Parser { lexer, current_token, peek_token, errors: Vec::new() }
Aug 10 20:52:23.948 INFO kablam!    |                  ^^^^^ mutable borrow occurs here
Aug 10 20:52:23.948 INFO kablam! 38 |     }
Aug 10 20:52:23.948 INFO kablam!    |     - immutable borrow ends here
Aug 10 20:52:23.948 INFO kablam! 
Aug 10 20:52:23.952 INFO kablam! error: aborting due to previous error
Aug 10 20:52:23.952 INFO kablam! 
Aug 10 20:52:23.952 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Aug 10 20:52:23.961 INFO kablam! error: aborting due to previous error
Aug 10 20:52:23.961 INFO kablam! 
Aug 10 20:52:23.961 INFO kablam! For more information about this error, try `rustc --explain E0502`.
Aug 10 20:52:23.971 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Aug 10 20:52:23.972 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 10 20:52:23.973 INFO kablam! error: Could not compile `writing_an_interpreter_in_rust`.
Aug 10 20:52:23.973 INFO kablam! 
Aug 10 20:52:23.973 INFO kablam! To learn more, run the command again with --verbose.
Aug 10 20:52:23.975 INFO kablam! su: No module specific data is present
Aug 10 20:52:24.716 INFO running `"docker" "rm" "-f" "ae1101c7304515aec467643014b2f268d0160d45210a4cb30261326b42c5246d"`
Aug 10 20:52:24.876 INFO blam! ae1101c7304515aec467643014b2f268d0160d45210a4cb30261326b42c5246d