Sep 10 16:48:53.416 INFO checking hindley-milner-0.1.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 16:48:53.416 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 16:48:53.416 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 16:48:53.567 INFO blam! 89fc0af884a286d1eb523ccde13438ae6c05862d88b3b7c5d4b9f9229e7cd610
Sep 10 16:48:53.569 INFO running `"docker" "start" "-a" "89fc0af884a286d1eb523ccde13438ae6c05862d88b3b7c5d4b9f9229e7cd610"`
Sep 10 16:48:54.425 INFO kablam! usermod: no changes
Sep 10 16:48:54.481 INFO kablam!     Checking hindley-milner v0.1.0 (file:///source)
Sep 10 16:48:55.123 INFO kablam! warning: struct is never constructed: `Namer`
Sep 10 16:48:55.123 INFO kablam!   --> src/lib.rs:77:1
Sep 10 16:48:55.123 INFO kablam!    |
Sep 10 16:48:55.123 INFO kablam! 77 | struct Namer {
Sep 10 16:48:55.123 INFO kablam!    | ^^^^^^^^^^^^
Sep 10 16:48:55.123 INFO kablam!    |
Sep 10 16:48:55.123 INFO kablam!    = note: #[warn(dead_code)] on by default
Sep 10 16:48:55.123 INFO kablam! 
Sep 10 16:48:55.123 INFO kablam! warning: method is never used: `next`
Sep 10 16:48:55.123 INFO kablam!   --> src/lib.rs:83:5
Sep 10 16:48:55.123 INFO kablam!    |
Sep 10 16:48:55.123 INFO kablam! 83 |     fn next(&mut self) -> String {
Sep 10 16:48:55.123 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 16:48:55.123 INFO kablam! 
Sep 10 16:48:55.123 INFO kablam! warning: method is never used: `name`
Sep 10 16:48:55.123 INFO kablam!   --> src/lib.rs:89:5
Sep 10 16:48:55.123 INFO kablam!    |
Sep 10 16:48:55.123 INFO kablam! 89 |     fn name(&mut self, t: ArenaType) -> String {
Sep 10 16:48:55.123 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 16:48:55.123 INFO kablam! 
Sep 10 16:48:55.123 INFO kablam! warning: method is never used: `id`
Sep 10 16:48:55.123 INFO kablam!    --> src/lib.rs:124:5
Sep 10 16:48:55.123 INFO kablam!     |
Sep 10 16:48:55.123 INFO kablam! 124 |     fn id(&self) -> usize {
Sep 10 16:48:55.123 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^
Sep 10 16:48:55.123 INFO kablam! 
Sep 10 16:48:55.123 INFO kablam! warning: method is never used: `as_string`
Sep 10 16:48:55.123 INFO kablam!    --> src/lib.rs:146:5
Sep 10 16:48:55.123 INFO kablam!     |
Sep 10 16:48:55.123 INFO kablam! 146 |     fn as_string(&self, a: &Vec<Type>, namer: &mut Namer) -> String {
Sep 10 16:48:55.123 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 16:48:55.123 INFO kablam! 
Sep 10 16:48:55.123 INFO kablam! warning: function is never used: `test_env`
Sep 10 16:48:55.123 INFO kablam!    --> src/lib.rs:537:1
Sep 10 16:48:55.123 INFO kablam!     |
Sep 10 16:48:55.123 INFO kablam! 537 | fn test_env() -> (Vec<Type>, Env) {
Sep 10 16:48:55.123 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 16:48:55.123 INFO kablam! 
Sep 10 16:48:55.182 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Sep 10 16:48:55.185 INFO kablam! su: No module specific data is present
Sep 10 16:48:56.447 INFO running `"docker" "rm" "-f" "89fc0af884a286d1eb523ccde13438ae6c05862d88b3b7c5d4b9f9229e7cd610"`
Sep 10 16:48:56.581 INFO blam! 89fc0af884a286d1eb523ccde13438ae6c05862d88b3b7c5d4b9f9229e7cd610