Dec 18 06:17:42.027 INFO checking NatTuck/meatball against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:17:42.027 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/NatTuck/meatball:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:17:42.492 INFO [stdout] 7fb3682029614b2e3e63b111e7002e23d161c60c68b9c726465efbd5e7e91cc1
Dec 18 06:17:42.500 INFO running `"docker" "start" "-a" "7fb3682029614b2e3e63b111e7002e23d161c60c68b9c726465efbd5e7e91cc1"`
Dec 18 06:17:43.892 INFO [stderr]     Checking meatball v0.1.0 (/opt/crater/workdir)
Dec 18 06:17:44.912 INFO [stderr] warning: unused import: `builtins::Builtin`
Dec 18 06:17:44.912 INFO [stderr]  --> src/program.rs:5:5
Dec 18 06:17:44.912 INFO [stderr]   |
Dec 18 06:17:44.912 INFO [stderr] 5 | use builtins::Builtin;
Dec 18 06:17:44.912 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 18 06:17:44.912 INFO [stderr]   |
Dec 18 06:17:44.912 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 06:17:44.912 INFO [stderr] 
Dec 18 06:17:44.936 INFO [stderr] warning: unused import: `builtins::Builtin`
Dec 18 06:17:44.936 INFO [stderr]  --> src/program.rs:5:5
Dec 18 06:17:44.936 INFO [stderr]   |
Dec 18 06:17:44.936 INFO [stderr] 5 | use builtins::Builtin;
Dec 18 06:17:44.936 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 18 06:17:44.936 INFO [stderr]   |
Dec 18 06:17:44.936 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 06:17:44.936 INFO [stderr] 
Dec 18 06:17:45.754 INFO [stderr] warning: function is never used: `zero_expr`
Dec 18 06:17:45.754 INFO [stderr]   --> src/parse.rs:46:1
Dec 18 06:17:45.754 INFO [stderr]    |
Dec 18 06:17:45.754 INFO [stderr] 46 | pub fn zero_expr() -> Ast {
Dec 18 06:17:45.754 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:17:45.754 INFO [stderr]    |
Dec 18 06:17:45.754 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:17:45.754 INFO [stderr] 
Dec 18 06:17:45.754 INFO [stderr] warning: variant is never constructed: `Cond`
Dec 18 06:17:45.754 INFO [stderr]   --> src/program.rs:30:5
Dec 18 06:17:45.754 INFO [stderr]    |
Dec 18 06:17:45.754 INFO [stderr] 30 |     Cond(Vec<(Expr, Expr)>),
Dec 18 06:17:45.754 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:17:45.754 INFO [stderr] 
Dec 18 06:17:45.754 INFO [stderr] warning: variant is never constructed: `Func`
Dec 18 06:17:45.754 INFO [stderr]   --> src/program.rs:31:5
Dec 18 06:17:45.754 INFO [stderr]    |
Dec 18 06:17:45.754 INFO [stderr] 31 |     Func(Box<Func>),
Dec 18 06:17:45.754 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 18 06:17:45.754 INFO [stderr] 
Dec 18 06:17:45.754 INFO [stderr] warning: function is never used: `ast2var`
Dec 18 06:17:45.754 INFO [stderr]   --> src/program.rs:80:1
Dec 18 06:17:45.754 INFO [stderr]    |
Dec 18 06:17:45.754 INFO [stderr] 80 | fn ast2var(ast: &[Ast]) -> Result<(String, Expr)> {
Dec 18 06:17:45.754 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:17:45.754 INFO [stderr] 
Dec 18 06:17:45.830 INFO [stderr] warning: function is never used: `zero_expr`
Dec 18 06:17:45.830 INFO [stderr]   --> src/parse.rs:46:1
Dec 18 06:17:45.830 INFO [stderr]    |
Dec 18 06:17:45.830 INFO [stderr] 46 | pub fn zero_expr() -> Ast {
Dec 18 06:17:45.830 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:17:45.830 INFO [stderr]    |
Dec 18 06:17:45.830 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:17:45.830 INFO [stderr] 
Dec 18 06:17:45.830 INFO [stderr] warning: variant is never constructed: `Cond`
Dec 18 06:17:45.830 INFO [stderr]   --> src/program.rs:30:5
Dec 18 06:17:45.830 INFO [stderr]    |
Dec 18 06:17:45.830 INFO [stderr] 30 |     Cond(Vec<(Expr, Expr)>),
Dec 18 06:17:45.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:17:45.830 INFO [stderr] 
Dec 18 06:17:45.831 INFO [stderr] warning: variant is never constructed: `Func`
Dec 18 06:17:45.831 INFO [stderr]   --> src/program.rs:31:5
Dec 18 06:17:45.831 INFO [stderr]    |
Dec 18 06:17:45.831 INFO [stderr] 31 |     Func(Box<Func>),
Dec 18 06:17:45.831 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 18 06:17:45.831 INFO [stderr] 
Dec 18 06:17:45.831 INFO [stderr] warning: function is never used: `ast2var`
Dec 18 06:17:45.831 INFO [stderr]   --> src/program.rs:80:1
Dec 18 06:17:45.831 INFO [stderr]    |
Dec 18 06:17:45.831 INFO [stderr] 80 | fn ast2var(ast: &[Ast]) -> Result<(String, Expr)> {
Dec 18 06:17:45.831 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:17:45.831 INFO [stderr] 
Dec 18 06:17:45.906 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
Dec 18 06:17:47.195 INFO running `"docker" "inspect" "7fb3682029614b2e3e63b111e7002e23d161c60c68b9c726465efbd5e7e91cc1"`
Dec 18 06:17:47.526 INFO running `"docker" "rm" "-f" "7fb3682029614b2e3e63b111e7002e23d161c60c68b9c726465efbd5e7e91cc1"`
Dec 18 06:17:47.880 INFO [stdout] 7fb3682029614b2e3e63b111e7002e23d161c60c68b9c726465efbd5e7e91cc1