Nov 03 07:06:24.520 INFO checking hindley-milner-0.1.0 against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 03 07:06:24.520 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-4/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 03 07:06:24.872 INFO blam! e53e195a7e908f1cb340ea44da980debd027031f76498a9c6548d40ad0514a38
Nov 03 07:06:24.876 INFO running `"docker" "start" "-a" "e53e195a7e908f1cb340ea44da980debd027031f76498a9c6548d40ad0514a38"`
Nov 03 07:06:26.044 INFO kablam! usermod: no changes
Nov 03 07:06:26.124 INFO kablam!     Checking hindley-milner v0.1.0 (/source)
Nov 03 07:06:26.816 INFO kablam! warning: struct is never constructed: `Namer`
Nov 03 07:06:26.816 INFO kablam!   --> src/lib.rs:77:1
Nov 03 07:06:26.816 INFO kablam!    |
Nov 03 07:06:26.816 INFO kablam! 77 | struct Namer {
Nov 03 07:06:26.816 INFO kablam!    | ^^^^^^^^^^^^
Nov 03 07:06:26.816 INFO kablam!    |
Nov 03 07:06:26.816 INFO kablam!    = note: #[warn(dead_code)] on by default
Nov 03 07:06:26.816 INFO kablam! 
Nov 03 07:06:26.816 INFO kablam! warning: method is never used: `next`
Nov 03 07:06:26.816 INFO kablam!   --> src/lib.rs:83:5
Nov 03 07:06:26.816 INFO kablam!    |
Nov 03 07:06:26.816 INFO kablam! 83 |     fn next(&mut self) -> String {
Nov 03 07:06:26.816 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 03 07:06:26.816 INFO kablam! 
Nov 03 07:06:26.816 INFO kablam! warning: method is never used: `name`
Nov 03 07:06:26.816 INFO kablam!   --> src/lib.rs:89:5
Nov 03 07:06:26.816 INFO kablam!    |
Nov 03 07:06:26.816 INFO kablam! 89 |     fn name(&mut self, t: ArenaType) -> String {
Nov 03 07:06:26.816 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 03 07:06:26.816 INFO kablam! 
Nov 03 07:06:26.816 INFO kablam! warning: method is never used: `id`
Nov 03 07:06:26.816 INFO kablam!    --> src/lib.rs:124:5
Nov 03 07:06:26.816 INFO kablam!     |
Nov 03 07:06:26.816 INFO kablam! 124 |     fn id(&self) -> usize {
Nov 03 07:06:26.816 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^
Nov 03 07:06:26.816 INFO kablam! 
Nov 03 07:06:26.816 INFO kablam! warning: method is never used: `as_string`
Nov 03 07:06:26.816 INFO kablam!    --> src/lib.rs:146:5
Nov 03 07:06:26.816 INFO kablam!     |
Nov 03 07:06:26.816 INFO kablam! 146 |     fn as_string(&self, a: &Vec<Type>, namer: &mut Namer) -> String {
Nov 03 07:06:26.816 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 03 07:06:26.816 INFO kablam! 
Nov 03 07:06:26.816 INFO kablam! warning: function is never used: `test_env`
Nov 03 07:06:26.816 INFO kablam!    --> src/lib.rs:537:1
Nov 03 07:06:26.816 INFO kablam!     |
Nov 03 07:06:26.816 INFO kablam! 537 | fn test_env() -> (Vec<Type>, Env) {
Nov 03 07:06:26.817 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 03 07:06:26.817 INFO kablam! 
Nov 03 07:06:27.035 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Nov 03 07:06:27.040 INFO kablam! su: No module specific data is present
Nov 03 07:06:27.422 INFO running `"docker" "rm" "-f" "e53e195a7e908f1cb340ea44da980debd027031f76498a9c6548d40ad0514a38"`
Nov 03 07:06:27.549 INFO blam! e53e195a7e908f1cb340ea44da980debd027031f76498a9c6548d40ad0514a38