Dec 15 08:53:19.604 INFO testing hindley-milner-0.1.0 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 15 08:53:19.604 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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"`
Dec 15 08:53:19.756 INFO [stdout] 8e8afa78ee1070b6c82c0a79baa7a33a934cf18ae378b06cc4225af738b6e8f4
Dec 15 08:53:19.759 INFO running `"docker" "start" "-a" "8e8afa78ee1070b6c82c0a79baa7a33a934cf18ae378b06cc4225af738b6e8f4"`
Dec 15 08:53:20.104 INFO [stderr] usermod: no changes
Dec 15 08:53:20.146 INFO [stderr]    Compiling hindley-milner v0.1.0 (/source)
Dec 15 08:53:20.795 INFO [stderr] warning: struct is never constructed: `Namer`
Dec 15 08:53:20.795 INFO [stderr]   --> src/lib.rs:77:1
Dec 15 08:53:20.795 INFO [stderr]    |
Dec 15 08:53:20.795 INFO [stderr] 77 | struct Namer {
Dec 15 08:53:20.795 INFO [stderr]    | ^^^^^^^^^^^^
Dec 15 08:53:20.795 INFO [stderr]    |
Dec 15 08:53:20.795 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 15 08:53:20.795 INFO [stderr] 
Dec 15 08:53:20.795 INFO [stderr] warning: method is never used: `next`
Dec 15 08:53:20.795 INFO [stderr]   --> src/lib.rs:83:5
Dec 15 08:53:20.795 INFO [stderr]    |
Dec 15 08:53:20.795 INFO [stderr] 83 |     fn next(&mut self) -> String {
Dec 15 08:53:20.795 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 08:53:20.795 INFO [stderr] 
Dec 15 08:53:20.795 INFO [stderr] warning: method is never used: `name`
Dec 15 08:53:20.795 INFO [stderr]   --> src/lib.rs:89:5
Dec 15 08:53:20.795 INFO [stderr]    |
Dec 15 08:53:20.795 INFO [stderr] 89 |     fn name(&mut self, t: ArenaType) -> String {
Dec 15 08:53:20.795 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 08:53:20.795 INFO [stderr] 
Dec 15 08:53:20.795 INFO [stderr] warning: method is never used: `id`
Dec 15 08:53:20.795 INFO [stderr]    --> src/lib.rs:124:5
Dec 15 08:53:20.795 INFO [stderr]     |
Dec 15 08:53:20.795 INFO [stderr] 124 |     fn id(&self) -> usize {
Dec 15 08:53:20.795 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 15 08:53:20.795 INFO [stderr] 
Dec 15 08:53:20.795 INFO [stderr] warning: method is never used: `as_string`
Dec 15 08:53:20.795 INFO [stderr]    --> src/lib.rs:146:5
Dec 15 08:53:20.795 INFO [stderr]     |
Dec 15 08:53:20.795 INFO [stderr] 146 |     fn as_string(&self, a: &Vec<Type>, namer: &mut Namer) -> String {
Dec 15 08:53:20.795 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 08:53:20.795 INFO [stderr] 
Dec 15 08:53:20.795 INFO [stderr] warning: function is never used: `test_env`
Dec 15 08:53:20.795 INFO [stderr]    --> src/lib.rs:537:1
Dec 15 08:53:20.795 INFO [stderr]     |
Dec 15 08:53:20.795 INFO [stderr] 537 | fn test_env() -> (Vec<Type>, Env) {
Dec 15 08:53:20.795 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 08:53:20.795 INFO [stderr] 
Dec 15 08:53:21.287 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
Dec 15 08:53:21.295 INFO [stderr] su: No module specific data is present
Dec 15 08:53:21.699 INFO running `"docker" "inspect" "8e8afa78ee1070b6c82c0a79baa7a33a934cf18ae378b06cc4225af738b6e8f4"`
Dec 15 08:53:21.796 INFO running `"docker" "rm" "-f" "8e8afa78ee1070b6c82c0a79baa7a33a934cf18ae378b06cc4225af738b6e8f4"`
Dec 15 08:53:21.933 INFO [stdout] 8e8afa78ee1070b6c82c0a79baa7a33a934cf18ae378b06cc4225af738b6e8f4
Dec 15 08:53:21.936 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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"`
Dec 15 08:53:22.211 INFO [stdout] 36cf02633164bf99cb32907ecb391c43390fad757e80c69c94e3646ecd3d2134
Dec 15 08:53:22.213 INFO running `"docker" "start" "-a" "36cf02633164bf99cb32907ecb391c43390fad757e80c69c94e3646ecd3d2134"`
Dec 15 08:53:23.937 INFO [stderr] usermod: no changes
Dec 15 08:53:23.968 INFO [stderr]    Compiling hindley-milner v0.1.0 (/source)
Dec 15 08:53:25.546 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
Dec 15 08:53:25.547 INFO [stderr] su: No module specific data is present
Dec 15 08:53:26.111 INFO running `"docker" "inspect" "36cf02633164bf99cb32907ecb391c43390fad757e80c69c94e3646ecd3d2134"`
Dec 15 08:53:26.175 INFO running `"docker" "rm" "-f" "36cf02633164bf99cb32907ecb391c43390fad757e80c69c94e3646ecd3d2134"`
Dec 15 08:53:26.266 INFO [stdout] 36cf02633164bf99cb32907ecb391c43390fad757e80c69c94e3646ecd3d2134
Dec 15 08:53:26.268 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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"`
Dec 15 08:53:26.419 INFO [stdout] 2b609e4dc6dc4c7c777d19fa7bc8921bbbe14332e1ef087ef2f104efae85bfbb
Dec 15 08:53:26.420 INFO running `"docker" "start" "-a" "2b609e4dc6dc4c7c777d19fa7bc8921bbbe14332e1ef087ef2f104efae85bfbb"`
Dec 15 08:53:26.873 INFO [stderr] usermod: no changes
Dec 15 08:53:26.873 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 15 08:53:26.873 INFO [stderr]      Running /target/debug/deps/hindley_milner-4c3ef91dbc076b65
Dec 15 08:53:26.873 INFO [stdout] 
Dec 15 08:53:26.873 INFO [stdout] running 9 tests
Dec 15 08:53:26.873 INFO [stdout] test test_composition ... ok
Dec 15 08:53:26.873 INFO [stdout] test test_factorial ... ok
Dec 15 08:53:26.873 INFO [stdout] test test_fun ... ok
Dec 15 08:53:26.873 INFO [stdout] test test_int ... ok
Dec 15 08:53:26.873 INFO [stdout] test test_generic_nongeneric ... ok
Dec 15 08:53:26.873 INFO [stdout] test test_mul ... ok
Dec 15 08:53:26.903 INFO [stdout] test test_mismatch ... ok
Dec 15 08:53:26.936 INFO [stdout] test test_recursive ... ok
Dec 15 08:53:26.936 INFO [stdout] test test_pair ... ok
Dec 15 08:53:26.936 INFO [stdout] 
Dec 15 08:53:26.936 INFO [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 08:53:26.936 INFO [stdout] 
Dec 15 08:53:26.936 INFO [stderr] su: No module specific data is present
Dec 15 08:53:27.288 INFO running `"docker" "inspect" "2b609e4dc6dc4c7c777d19fa7bc8921bbbe14332e1ef087ef2f104efae85bfbb"`
Dec 15 08:53:27.457 INFO running `"docker" "rm" "-f" "2b609e4dc6dc4c7c777d19fa7bc8921bbbe14332e1ef087ef2f104efae85bfbb"`
Dec 15 08:53:27.582 INFO [stdout] 2b609e4dc6dc4c7c777d19fa7bc8921bbbe14332e1ef087ef2f104efae85bfbb