Sep 20 00:09:44.766 INFO checking hindley-milner-0.1.0 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 20 00:09:44.766 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 20 00:09:44.766 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-7/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 20 00:09:44.924 INFO blam! 1d94c19e8d7a2c33af6497e4361ab7d65a876dda47fdc8d305ac32b4608c0b9d
Sep 20 00:09:44.926 INFO running `"docker" "start" "-a" "1d94c19e8d7a2c33af6497e4361ab7d65a876dda47fdc8d305ac32b4608c0b9d"`
Sep 20 00:09:46.078 INFO kablam! usermod: no changes
Sep 20 00:09:46.121 INFO kablam!     Checking hindley-milner v0.1.0 (/source)
Sep 20 00:09:46.559 INFO kablam! warning: struct is never constructed: `Namer`
Sep 20 00:09:46.559 INFO kablam!   --> src/lib.rs:77:1
Sep 20 00:09:46.559 INFO kablam!    |
Sep 20 00:09:46.559 INFO kablam! 77 | struct Namer {
Sep 20 00:09:46.559 INFO kablam!    | ^^^^^^^^^^^^
Sep 20 00:09:46.559 INFO kablam!    |
Sep 20 00:09:46.559 INFO kablam!    = note: #[warn(dead_code)] on by default
Sep 20 00:09:46.559 INFO kablam! 
Sep 20 00:09:46.559 INFO kablam! warning: method is never used: `next`
Sep 20 00:09:46.559 INFO kablam!   --> src/lib.rs:83:5
Sep 20 00:09:46.559 INFO kablam!    |
Sep 20 00:09:46.559 INFO kablam! 83 |     fn next(&mut self) -> String {
Sep 20 00:09:46.559 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 00:09:46.559 INFO kablam! 
Sep 20 00:09:46.559 INFO kablam! warning: method is never used: `name`
Sep 20 00:09:46.559 INFO kablam!   --> src/lib.rs:89:5
Sep 20 00:09:46.559 INFO kablam!    |
Sep 20 00:09:46.559 INFO kablam! 89 |     fn name(&mut self, t: ArenaType) -> String {
Sep 20 00:09:46.559 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 00:09:46.559 INFO kablam! 
Sep 20 00:09:46.559 INFO kablam! warning: method is never used: `id`
Sep 20 00:09:46.559 INFO kablam!    --> src/lib.rs:124:5
Sep 20 00:09:46.559 INFO kablam!     |
Sep 20 00:09:46.559 INFO kablam! 124 |     fn id(&self) -> usize {
Sep 20 00:09:46.559 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^
Sep 20 00:09:46.559 INFO kablam! 
Sep 20 00:09:46.559 INFO kablam! warning: method is never used: `as_string`
Sep 20 00:09:46.559 INFO kablam!    --> src/lib.rs:146:5
Sep 20 00:09:46.559 INFO kablam!     |
Sep 20 00:09:46.559 INFO kablam! 146 |     fn as_string(&self, a: &Vec<Type>, namer: &mut Namer) -> String {
Sep 20 00:09:46.559 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 00:09:46.559 INFO kablam! 
Sep 20 00:09:46.559 INFO kablam! warning: function is never used: `test_env`
Sep 20 00:09:46.559 INFO kablam!    --> src/lib.rs:537:1
Sep 20 00:09:46.559 INFO kablam!     |
Sep 20 00:09:46.559 INFO kablam! 537 | fn test_env() -> (Vec<Type>, Env) {
Sep 20 00:09:46.559 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 20 00:09:46.559 INFO kablam! 
Sep 20 00:09:46.688 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Sep 20 00:09:46.693 INFO kablam! su: No module specific data is present
Sep 20 00:09:47.423 INFO running `"docker" "rm" "-f" "1d94c19e8d7a2c33af6497e4361ab7d65a876dda47fdc8d305ac32b4608c0b9d"`
Sep 20 00:09:47.695 INFO blam! 1d94c19e8d7a2c33af6497e4361ab7d65a876dda47fdc8d305ac32b4608c0b9d