Dec 17 19:46:55.936 INFO checking memoryleak47/constraint-lang against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:46:55.936 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/memoryleak47/constraint-lang:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:46:56.466 INFO [stdout] 91cee482edfd239e41e567d243da208b1b1626c1e3c3ef6568c42f6ff9d78e7d
Dec 17 19:46:56.468 INFO running `"docker" "start" "-a" "91cee482edfd239e41e567d243da208b1b1626c1e3c3ef6568c42f6ff9d78e7d"`
Dec 17 19:46:58.233 INFO [stderr]     Checking libc v0.2.39
Dec 17 19:46:59.320 INFO [stderr]     Checking memchr v1.0.2
Dec 17 19:46:59.568 INFO [stderr]     Checking nom v3.2.1
Dec 17 19:47:01.684 INFO [stderr]     Checking productivity-lang-compiler v0.1.0 (/opt/crater/workdir)
Dec 17 19:47:04.968 INFO [stderr] warning: variant is never constructed: `String`
Dec 17 19:47:04.968 INFO [stderr]    --> src/ast/mod.rs:154:2
Dec 17 19:47:04.968 INFO [stderr]     |
Dec 17 19:47:04.968 INFO [stderr] 154 |     String(String),
Dec 17 19:47:04.968 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 17 19:47:04.968 INFO [stderr]     |
Dec 17 19:47:04.968 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 19:47:04.968 INFO [stderr] 
Dec 17 19:47:04.968 INFO [stderr] warning: variant is never constructed: `Null`
Dec 17 19:47:04.968 INFO [stderr]    --> src/ast/mod.rs:156:2
Dec 17 19:47:04.968 INFO [stderr]     |
Dec 17 19:47:04.968 INFO [stderr] 156 |     Null, // the `null` expression
Dec 17 19:47:04.968 INFO [stderr]     |     ^^^^
Dec 17 19:47:04.968 INFO [stderr] 
Dec 17 19:47:04.968 INFO [stderr] warning: variant is never constructed: `Array`
Dec 17 19:47:04.968 INFO [stderr]    --> src/ast/mod.rs:159:2
Dec 17 19:47:04.968 INFO [stderr]     |
Dec 17 19:47:04.968 INFO [stderr] 159 |     Array(Vec<Expr>),
Dec 17 19:47:04.968 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 17 19:47:04.968 INFO [stderr] 
Dec 17 19:47:04.968 INFO [stderr] warning: variant is never constructed: `Tuple`
Dec 17 19:47:04.968 INFO [stderr]    --> src/ast/mod.rs:160:2
Dec 17 19:47:04.968 INFO [stderr]     |
Dec 17 19:47:04.969 INFO [stderr] 160 |     Tuple(Vec<Expr>),
Dec 17 19:47:04.969 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 17 19:47:04.969 INFO [stderr] 
Dec 17 19:47:04.969 INFO [stderr] warning: variant is never constructed: `Object`
Dec 17 19:47:04.969 INFO [stderr]    --> src/ast/mod.rs:161:2
Dec 17 19:47:04.969 INFO [stderr]     |
Dec 17 19:47:04.969 INFO [stderr] 161 |     Object(HashMap<String, Box<Expr>>), // { f = 2 }
Dec 17 19:47:04.969 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:47:04.969 INFO [stderr] 
Dec 17 19:47:04.969 INFO [stderr] warning: method is never used: `dealloc`
Dec 17 19:47:04.969 INFO [stderr]   --> src/exec/heap.rs:27:2
Dec 17 19:47:04.969 INFO [stderr]    |
Dec 17 19:47:04.969 INFO [stderr] 27 |     pub fn dealloc(&mut self, index: usize) -> Option<V> {
Dec 17 19:47:04.969 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:47:04.969 INFO [stderr] 
Dec 17 19:47:05.278 INFO [stderr] warning: variant is never constructed: `String`
Dec 17 19:47:05.278 INFO [stderr]    --> src/ast/mod.rs:154:2
Dec 17 19:47:05.278 INFO [stderr]     |
Dec 17 19:47:05.278 INFO [stderr] 154 |     String(String),
Dec 17 19:47:05.278 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 17 19:47:05.278 INFO [stderr]     |
Dec 17 19:47:05.278 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 19:47:05.278 INFO [stderr] 
Dec 17 19:47:05.278 INFO [stderr] warning: variant is never constructed: `Null`
Dec 17 19:47:05.278 INFO [stderr]    --> src/ast/mod.rs:156:2
Dec 17 19:47:05.278 INFO [stderr]     |
Dec 17 19:47:05.278 INFO [stderr] 156 |     Null, // the `null` expression
Dec 17 19:47:05.278 INFO [stderr]     |     ^^^^
Dec 17 19:47:05.278 INFO [stderr] 
Dec 17 19:47:05.278 INFO [stderr] warning: variant is never constructed: `Array`
Dec 17 19:47:05.278 INFO [stderr]    --> src/ast/mod.rs:159:2
Dec 17 19:47:05.278 INFO [stderr]     |
Dec 17 19:47:05.278 INFO [stderr] 159 |     Array(Vec<Expr>),
Dec 17 19:47:05.278 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 17 19:47:05.278 INFO [stderr] 
Dec 17 19:47:05.278 INFO [stderr] warning: variant is never constructed: `Tuple`
Dec 17 19:47:05.278 INFO [stderr]    --> src/ast/mod.rs:160:2
Dec 17 19:47:05.278 INFO [stderr]     |
Dec 17 19:47:05.278 INFO [stderr] 160 |     Tuple(Vec<Expr>),
Dec 17 19:47:05.278 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 17 19:47:05.278 INFO [stderr] 
Dec 17 19:47:05.278 INFO [stderr] warning: variant is never constructed: `Object`
Dec 17 19:47:05.278 INFO [stderr]    --> src/ast/mod.rs:161:2
Dec 17 19:47:05.278 INFO [stderr]     |
Dec 17 19:47:05.278 INFO [stderr] 161 |     Object(HashMap<String, Box<Expr>>), // { f = 2 }
Dec 17 19:47:05.278 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:47:05.278 INFO [stderr] 
Dec 17 19:47:05.278 INFO [stderr] warning: method is never used: `dealloc`
Dec 17 19:47:05.278 INFO [stderr]   --> src/exec/heap.rs:27:2
Dec 17 19:47:05.278 INFO [stderr]    |
Dec 17 19:47:05.278 INFO [stderr] 27 |     pub fn dealloc(&mut self, index: usize) -> Option<V> {
Dec 17 19:47:05.278 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:47:05.278 INFO [stderr] 
Dec 17 19:47:05.364 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.21s
Dec 17 19:47:06.455 INFO running `"docker" "inspect" "91cee482edfd239e41e567d243da208b1b1626c1e3c3ef6568c42f6ff9d78e7d"`
Dec 17 19:47:06.676 INFO running `"docker" "rm" "-f" "91cee482edfd239e41e567d243da208b1b1626c1e3c3ef6568c42f6ff9d78e7d"`
Dec 17 19:47:06.931 INFO [stdout] 91cee482edfd239e41e567d243da208b1b1626c1e3c3ef6568c42f6ff9d78e7d