Oct 12 17:32:56.040 INFO checking memoryleak47/constraint-lang against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 17:32:56.040 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-5/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 17:32:56.530 INFO blam! 4f78e2a23a1cc91aeb12f27ba9841c993b597b60cfd616ef216bd203dd01268f
Oct 12 17:32:56.532 INFO running `"docker" "start" "-a" "4f78e2a23a1cc91aeb12f27ba9841c993b597b60cfd616ef216bd203dd01268f"`
Oct 12 17:32:58.060 INFO kablam! usermod: no changes
Oct 12 17:32:58.152 INFO kablam!     Checking libc v0.2.39
Oct 12 17:32:59.720 INFO kablam!     Checking memchr v1.0.2
Oct 12 17:33:00.049 INFO kablam!     Checking nom v3.2.1
Oct 12 17:33:03.133 INFO kablam!     Checking productivity-lang-compiler v0.1.0 (/source)
Oct 12 17:33:06.673 INFO kablam! warning: variant is never constructed: `String`
Oct 12 17:33:06.673 INFO kablam!    --> src/ast/mod.rs:154:2
Oct 12 17:33:06.673 INFO kablam!     |
Oct 12 17:33:06.673 INFO kablam! 154 |     String(String),
Oct 12 17:33:06.673 INFO kablam!     |     ^^^^^^^^^^^^^^
Oct 12 17:33:06.673 INFO kablam!     |
Oct 12 17:33:06.673 INFO kablam!     = note: #[warn(dead_code)] on by default
Oct 12 17:33:06.673 INFO kablam! 
Oct 12 17:33:06.673 INFO kablam! warning: variant is never constructed: `Null`
Oct 12 17:33:06.674 INFO kablam!    --> src/ast/mod.rs:156:2
Oct 12 17:33:06.674 INFO kablam!     |
Oct 12 17:33:06.674 INFO kablam! 156 |     Null, // the `null` expression
Oct 12 17:33:06.674 INFO kablam!     |     ^^^^
Oct 12 17:33:06.674 INFO kablam! 
Oct 12 17:33:06.674 INFO kablam! warning: variant is never constructed: `Array`
Oct 12 17:33:06.674 INFO kablam!    --> src/ast/mod.rs:159:2
Oct 12 17:33:06.674 INFO kablam!     |
Oct 12 17:33:06.674 INFO kablam! 159 |     Array(Vec<Expr>),
Oct 12 17:33:06.677 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Oct 12 17:33:06.677 INFO kablam! 
Oct 12 17:33:06.677 INFO kablam! warning: variant is never constructed: `Tuple`
Oct 12 17:33:06.677 INFO kablam!    --> src/ast/mod.rs:160:2
Oct 12 17:33:06.677 INFO kablam!     |
Oct 12 17:33:06.677 INFO kablam! 160 |     Tuple(Vec<Expr>),
Oct 12 17:33:06.677 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Oct 12 17:33:06.677 INFO kablam! 
Oct 12 17:33:06.677 INFO kablam! warning: variant is never constructed: `Object`
Oct 12 17:33:06.677 INFO kablam!    --> src/ast/mod.rs:161:2
Oct 12 17:33:06.677 INFO kablam!     |
Oct 12 17:33:06.677 INFO kablam! 161 |     Object(HashMap<String, Box<Expr>>), // { f = 2 }
Oct 12 17:33:06.677 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 17:33:06.677 INFO kablam! 
Oct 12 17:33:06.681 INFO kablam! warning: method is never used: `dealloc`
Oct 12 17:33:06.681 INFO kablam!   --> src/exec/heap.rs:27:2
Oct 12 17:33:06.681 INFO kablam!    |
Oct 12 17:33:06.681 INFO kablam! 27 |     pub fn dealloc(&mut self, index: usize) -> Option<V> {
Oct 12 17:33:06.681 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 17:33:06.681 INFO kablam! 
Oct 12 17:33:07.421 INFO kablam! warning: variant is never constructed: `String`
Oct 12 17:33:07.421 INFO kablam!    --> src/ast/mod.rs:154:2
Oct 12 17:33:07.421 INFO kablam!     |
Oct 12 17:33:07.422 INFO kablam! 154 |     String(String),
Oct 12 17:33:07.422 INFO kablam!     |     ^^^^^^^^^^^^^^
Oct 12 17:33:07.422 INFO kablam!     |
Oct 12 17:33:07.422 INFO kablam!     = note: #[warn(dead_code)] on by default
Oct 12 17:33:07.422 INFO kablam! 
Oct 12 17:33:07.422 INFO kablam! warning: variant is never constructed: `Null`
Oct 12 17:33:07.422 INFO kablam!    --> src/ast/mod.rs:156:2
Oct 12 17:33:07.422 INFO kablam!     |
Oct 12 17:33:07.422 INFO kablam! 156 |     Null, // the `null` expression
Oct 12 17:33:07.422 INFO kablam!     |     ^^^^
Oct 12 17:33:07.422 INFO kablam! 
Oct 12 17:33:07.422 INFO kablam! warning: variant is never constructed: `Array`
Oct 12 17:33:07.422 INFO kablam!    --> src/ast/mod.rs:159:2
Oct 12 17:33:07.422 INFO kablam!     |
Oct 12 17:33:07.422 INFO kablam! 159 |     Array(Vec<Expr>),
Oct 12 17:33:07.422 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Oct 12 17:33:07.422 INFO kablam! 
Oct 12 17:33:07.422 INFO kablam! warning: variant is never constructed: `Tuple`
Oct 12 17:33:07.422 INFO kablam!    --> src/ast/mod.rs:160:2
Oct 12 17:33:07.422 INFO kablam!     |
Oct 12 17:33:07.422 INFO kablam! 160 |     Tuple(Vec<Expr>),
Oct 12 17:33:07.422 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Oct 12 17:33:07.422 INFO kablam! 
Oct 12 17:33:07.422 INFO kablam! warning: variant is never constructed: `Object`
Oct 12 17:33:07.422 INFO kablam!    --> src/ast/mod.rs:161:2
Oct 12 17:33:07.422 INFO kablam!     |
Oct 12 17:33:07.422 INFO kablam! 161 |     Object(HashMap<String, Box<Expr>>), // { f = 2 }
Oct 12 17:33:07.422 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 17:33:07.422 INFO kablam! 
Oct 12 17:33:07.427 INFO kablam! warning: method is never used: `dealloc`
Oct 12 17:33:07.427 INFO kablam!   --> src/exec/heap.rs:27:2
Oct 12 17:33:07.427 INFO kablam!    |
Oct 12 17:33:07.427 INFO kablam! 27 |     pub fn dealloc(&mut self, index: usize) -> Option<V> {
Oct 12 17:33:07.427 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 17:33:07.427 INFO kablam! 
Oct 12 17:33:07.512 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 9.43s
Oct 12 17:33:07.519 INFO kablam! su: No module specific data is present
Oct 12 17:33:08.338 INFO running `"docker" "rm" "-f" "4f78e2a23a1cc91aeb12f27ba9841c993b597b60cfd616ef216bd203dd01268f"`
Oct 12 17:33:08.673 INFO blam! 4f78e2a23a1cc91aeb12f27ba9841c993b597b60cfd616ef216bd203dd01268f