[INFO] updating cached repository ukitaka/min_region
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ukitaka/min_region
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ukitaka/min_region" "work/ex/beta-1.38-1/sources/1.37.0/gh/ukitaka/min_region"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ukitaka/min_region'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ukitaka/min_region" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ukitaka/min_region"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ukitaka/min_region'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df7b190373970063c421af86f4166f43ef9fc9e9
[INFO] sha for GitHub repo ukitaka/min_region: df7b190373970063c421af86f4166f43ef9fc9e9
[INFO] validating manifest of ukitaka/min_region on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ukitaka/min_region on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ukitaka/min_region
[INFO] finished frobbing ukitaka/min_region
[INFO] frobbed toml for ukitaka/min_region written to work/ex/beta-1.38-1/sources/1.37.0/gh/ukitaka/min_region/Cargo.toml
[INFO] started frobbing ukitaka/min_region
[INFO] finished frobbing ukitaka/min_region
[INFO] frobbed toml for ukitaka/min_region written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ukitaka/min_region/Cargo.toml
[INFO] crate ukitaka/min_region already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ukitaka/min_region against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ukitaka/min_region:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2d6d36a5e4e939f4d1918e89f05f16cbe18f8a5e029c68dc8c2505329709d26a
[INFO] running `"docker" "start" "-a" "2d6d36a5e4e939f4d1918e89f05f16cbe18f8a5e029c68dc8c2505329709d26a"`
[INFO] [stderr]    Compiling min_region v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |                       ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]  --> src/syntax/ast.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     name: String
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `region`
[INFO] [stderr]   --> src/syntax/ast.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     region: RegionVar,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `size`
[INFO] [stderr]   --> src/syntax/ast.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     size: RegionSize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/syntax/ast.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     name: String
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `generateInMain` should have a snake case name
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `generate_in_main`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |                       ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]  --> src/syntax/ast.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     name: String
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Finite`
[INFO] [stderr]  --> src/syntax/ast.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Finite(i32),
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Infinite`
[INFO] [stderr]  --> src/syntax/ast.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Infinite
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AtTop`
[INFO] [stderr]   --> src/syntax/ast.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     AtTop(RegionVar),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AtBot`
[INFO] [stderr]   --> src/syntax/ast.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     AtBot(RegionVar),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SAt`
[INFO] [stderr]   --> src/syntax/ast.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     SAt(RegionVar),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `region`
[INFO] [stderr]   --> src/syntax/ast.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     region: RegionVar,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `size`
[INFO] [stderr]   --> src/syntax/ast.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     size: RegionSize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `True`
[INFO] [stderr]   --> src/syntax/ast.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     True,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `False`
[INFO] [stderr]   --> src/syntax/ast.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     False,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]   --> src/syntax/ast.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Number(i32)
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/syntax/ast.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     name: String
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/syntax/ast.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Var(Var),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pair`
[INFO] [stderr]   --> src/syntax/ast.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Pair(Var, Var),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/syntax/ast.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Cons(Var, Var),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/syntax/ast.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     Var(Var),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/syntax/ast.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | /     Let {
[INFO] [stderr] 42 | |         pattern: Pattern,
[INFO] [stderr] 43 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 44 | |         body: &'a Expr<'a>,
[INFO] [stderr] 45 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pair`
[INFO] [stderr]   --> src/syntax/ast.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | /     Pair {
[INFO] [stderr] 47 | |         fst: &'a Expr<'a>,
[INFO] [stderr] 48 | |         snd: &'a Expr<'a>,
[INFO] [stderr] 49 | |         at: AllocationPoint,
[INFO] [stderr] 50 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/syntax/ast.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 | /     Cons {
[INFO] [stderr] 52 | |         head: &'a Expr<'a>,
[INFO] [stderr] 53 | |         tail: &'a Expr<'a>,
[INFO] [stderr] 54 | |         at: AllocationPoint,
[INFO] [stderr] 55 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Closure`
[INFO] [stderr]   --> src/syntax/ast.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | /     Closure {
[INFO] [stderr] 57 | |         var: Var,
[INFO] [stderr] 58 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 59 | |         at: AllocationPoint,
[INFO] [stderr] 60 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Case`
[INFO] [stderr]   --> src/syntax/ast.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 | /     Case {
[INFO] [stderr] 62 | |         target: &'a Expr<'a>,
[INFO] [stderr] 63 | |         pattern1: Pattern,
[INFO] [stderr] 64 | |         body1: &'a Expr<'a>,
[INFO] [stderr] 65 | |         pattern2: Pattern,
[INFO] [stderr] 66 | |         body2: &'a Expr<'a>,
[INFO] [stderr] 67 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LetRec`
[INFO] [stderr]   --> src/syntax/ast.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     LetRec {
[INFO] [stderr] 69 | |         name: String,
[INFO] [stderr] 70 | |         fr_params: Vec<BindingPoint>,
[INFO] [stderr] 71 | |         param: Var,
[INFO] [stderr] ...  |
[INFO] [stderr] 74 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 75 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `App`
[INFO] [stderr]   --> src/syntax/ast.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 | /     App {
[INFO] [stderr] 77 | |         func_name: String,
[INFO] [stderr] 78 | |         ar_params: Vec<AllocationPoint>,
[INFO] [stderr] 79 | |         at: AllocationPoint,
[INFO] [stderr] 80 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LetRegion`
[INFO] [stderr]   --> src/syntax/ast.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | /     LetRegion {
[INFO] [stderr] 82 | |         bindings: Vec<BindingPoint>,
[INFO] [stderr] 83 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 84 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method `generateInMain` should have a snake case name
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `generate_in_main`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `"docker" "inspect" "2d6d36a5e4e939f4d1918e89f05f16cbe18f8a5e029c68dc8c2505329709d26a"`
[INFO] running `"docker" "rm" "-f" "2d6d36a5e4e939f4d1918e89f05f16cbe18f8a5e029c68dc8c2505329709d26a"`
[INFO] [stdout] 2d6d36a5e4e939f4d1918e89f05f16cbe18f8a5e029c68dc8c2505329709d26a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ukitaka/min_region:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ee51a5b851d9b1bd774c1049847d03dd58556c902bff674edee8a585b51007e2
[INFO] running `"docker" "start" "-a" "ee51a5b851d9b1bd774c1049847d03dd58556c902bff674edee8a585b51007e2"`
[INFO] [stderr]    Compiling min_region v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |                       ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]  --> src/syntax/ast.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     name: String
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Finite`
[INFO] [stderr]  --> src/syntax/ast.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Finite(i32),
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Infinite`
[INFO] [stderr]  --> src/syntax/ast.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Infinite
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AtTop`
[INFO] [stderr]   --> src/syntax/ast.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     AtTop(RegionVar),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AtBot`
[INFO] [stderr]   --> src/syntax/ast.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     AtBot(RegionVar),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SAt`
[INFO] [stderr]   --> src/syntax/ast.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     SAt(RegionVar),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `region`
[INFO] [stderr]   --> src/syntax/ast.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     region: RegionVar,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `size`
[INFO] [stderr]   --> src/syntax/ast.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     size: RegionSize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `True`
[INFO] [stderr]   --> src/syntax/ast.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     True,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `False`
[INFO] [stderr]   --> src/syntax/ast.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     False,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]   --> src/syntax/ast.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Number(i32)
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/syntax/ast.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     name: String
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/syntax/ast.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Var(Var),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pair`
[INFO] [stderr]   --> src/syntax/ast.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Pair(Var, Var),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/syntax/ast.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Cons(Var, Var),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/syntax/ast.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     Var(Var),
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/syntax/ast.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | /     Let {
[INFO] [stderr] 42 | |         pattern: Pattern,
[INFO] [stderr] 43 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 44 | |         body: &'a Expr<'a>,
[INFO] [stderr] 45 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pair`
[INFO] [stderr]   --> src/syntax/ast.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | /     Pair {
[INFO] [stderr] 47 | |         fst: &'a Expr<'a>,
[INFO] [stderr] 48 | |         snd: &'a Expr<'a>,
[INFO] [stderr] 49 | |         at: AllocationPoint,
[INFO] [stderr] 50 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]   --> src/syntax/ast.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 | /     Cons {
[INFO] [stderr] 52 | |         head: &'a Expr<'a>,
[INFO] [stderr] 53 | |         tail: &'a Expr<'a>,
[INFO] [stderr] 54 | |         at: AllocationPoint,
[INFO] [stderr] 55 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Closure`
[INFO] [stderr]   --> src/syntax/ast.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | /     Closure {
[INFO] [stderr] 57 | |         var: Var,
[INFO] [stderr] 58 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 59 | |         at: AllocationPoint,
[INFO] [stderr] 60 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Case`
[INFO] [stderr]   --> src/syntax/ast.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 | /     Case {
[INFO] [stderr] 62 | |         target: &'a Expr<'a>,
[INFO] [stderr] 63 | |         pattern1: Pattern,
[INFO] [stderr] 64 | |         body1: &'a Expr<'a>,
[INFO] [stderr] 65 | |         pattern2: Pattern,
[INFO] [stderr] 66 | |         body2: &'a Expr<'a>,
[INFO] [stderr] 67 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LetRec`
[INFO] [stderr]   --> src/syntax/ast.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 | /     LetRec {
[INFO] [stderr] 69 | |         name: String,
[INFO] [stderr] 70 | |         fr_params: Vec<BindingPoint>,
[INFO] [stderr] 71 | |         param: Var,
[INFO] [stderr] ...  |
[INFO] [stderr] 74 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 75 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `App`
[INFO] [stderr]   --> src/syntax/ast.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 | /     App {
[INFO] [stderr] 77 | |         func_name: String,
[INFO] [stderr] 78 | |         ar_params: Vec<AllocationPoint>,
[INFO] [stderr] 79 | |         at: AllocationPoint,
[INFO] [stderr] 80 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LetRegion`
[INFO] [stderr]   --> src/syntax/ast.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | /     LetRegion {
[INFO] [stderr] 82 | |         bindings: Vec<BindingPoint>,
[INFO] [stderr] 83 | |         expr: &'a Expr<'a>,
[INFO] [stderr] 84 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method `generateInMain` should have a snake case name
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `generate_in_main`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |                       ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]  --> src/syntax/ast.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     name: String
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `region`
[INFO] [stderr]   --> src/syntax/ast.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     region: RegionVar,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `size`
[INFO] [stderr]   --> src/syntax/ast.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     size: RegionSize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/syntax/ast.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     name: String
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `generateInMain` should have a snake case name
[INFO] [stderr]  --> src/codegen/llvm/generator.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn generateInMain(expr: Expr) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `generate_in_main`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `"docker" "inspect" "ee51a5b851d9b1bd774c1049847d03dd58556c902bff674edee8a585b51007e2"`
[INFO] running `"docker" "rm" "-f" "ee51a5b851d9b1bd774c1049847d03dd58556c902bff674edee8a585b51007e2"`
[INFO] [stdout] ee51a5b851d9b1bd774c1049847d03dd58556c902bff674edee8a585b51007e2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ukitaka/min_region:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ba9ff9b231746694acc2a3cba3cce6d0af84128cf2a52f21451d8501891034bc
[INFO] running `"docker" "start" "-a" "ba9ff9b231746694acc2a3cba3cce6d0af84128cf2a52f21451d8501891034bc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/min_region-104840d0202ff8c6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/min_region-2a316cbad3d749ba
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/run_test_case1-3c4b92ba0b4e2d52
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests min_region
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ba9ff9b231746694acc2a3cba3cce6d0af84128cf2a52f21451d8501891034bc"`
[INFO] running `"docker" "rm" "-f" "ba9ff9b231746694acc2a3cba3cce6d0af84128cf2a52f21451d8501891034bc"`
[INFO] [stdout] ba9ff9b231746694acc2a3cba3cce6d0af84128cf2a52f21451d8501891034bc