[INFO] cloning repository https://github.com/myuon/quartz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/myuon/quartz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmyuon%2Fquartz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmyuon%2Fquartz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 916f982e5af8d5b4d9683018a73cbc717ba645d9
[INFO] testing myuon/quartz against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmyuon%2Fquartz" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/myuon/quartz on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/myuon/quartz
[INFO] finished tweaking git repo https://github.com/myuon/quartz
[INFO] tweaked toml for git repo https://github.com/myuon/quartz written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/myuon/quartz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80ab60cb4d5c2c5a6cb275a92516429571e6ed66edf06dd21dd836975bf43974
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80ab60cb4d5c2c5a6cb275a92516429571e6ed66edf06dd21dd836975bf43974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80ab60cb4d5c2c5a6cb275a92516429571e6ed66edf06dd21dd836975bf43974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80ab60cb4d5c2c5a6cb275a92516429571e6ed66edf06dd21dd836975bf43974", kill_on_drop: false }`
[INFO] [stdout] 80ab60cb4d5c2c5a6cb275a92516429571e6ed66edf06dd21dd836975bf43974
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dd3af4594b5eff7f02e84ff93f9627f943f53366a062d19e6ca9ac5bf7958aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6dd3af4594b5eff7f02e84ff93f9627f943f53366a062d19e6ca9ac5bf7958aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling quartz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Infer`
[INFO] [stdout]   --> src/ast.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     Infer(usize), // for typecheck
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unit`
[INFO] [stdout]   --> src/ast.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     Unit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/ast.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/ast.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Int,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]   --> src/ast.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ref`
[INFO] [stdout]   --> src/ast.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     Ref(Box<Type>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fn`
[INFO] [stdout]   --> src/ast.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Fn(Vec<Type>, Box<Type>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_fn_type`
[INFO] [stdout]   --> src/ast.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn as_fn_type(&self) -> Option<(&Vec<Type>, &Box<Type>)> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_ref_type`
[INFO] [stdout]   --> src/ast.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn as_ref_type(&self) -> Option<&Box<Type>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_infer`
[INFO] [stdout]   --> src/ast.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn has_infer(&self, index: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `subst`
[INFO] [stdout]   --> src/ast.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn subst(&mut self, index: usize, typ: &Type) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Constraints`
[INFO] [stdout]  --> src/typechecker.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Constraints(Vec<(usize, Type)>);
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/typechecker.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new() -> Constraints {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/typechecker.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn insert(&mut self, index: usize, typ: Type) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `singleton`
[INFO] [stdout]   --> src/typechecker.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn singleton(index: usize, typ: Type) -> Constraints {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify`
[INFO] [stdout]   --> src/typechecker.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn unify(t1: &Type, t2: &Type) -> Result<Constraints> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find`
[INFO] [stdout]   --> src/typechecker.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn find(&self, index: usize) -> Option<Type> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `merge`
[INFO] [stdout]   --> src/typechecker.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn merge(&mut self, c2: &Constraints) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `subst`
[INFO] [stdout]   --> src/typechecker.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn subst(&mut self, index: usize, typ: &Type) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `apply`
[INFO] [stdout]   --> src/typechecker.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn apply(&self, typ: &mut Type) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TypeChecker`
[INFO] [stdout]    --> src/typechecker.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct TypeChecker {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/typechecker.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn new() -> TypeChecker {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `apply_constraints`
[INFO] [stdout]    --> src/typechecker.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn apply_constraints(&mut self, constraints: &Constraints) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_infer`
[INFO] [stdout]    --> src/typechecker.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     fn next_infer(&mut self) -> Type {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]    --> src/typechecker.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn load(&mut self, v: &String) -> Result<Type> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expr`
[INFO] [stdout]    --> src/typechecker.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn expr(&mut self, expr: &mut Expr) -> Result<Type> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `statements`
[INFO] [stdout]    --> src/typechecker.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub fn statements(&mut self, statements: &mut Vec<Statement>) -> Result<Type> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `module`
[INFO] [stdout]    --> src/typechecker.rs:249:12
[INFO] [stdout]     |
[INFO] [stdout] 249 |     pub fn module(&mut self, module: &mut Module) -> Result<Type> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.46s
[INFO] running `Command { std: "docker" "inspect" "6dd3af4594b5eff7f02e84ff93f9627f943f53366a062d19e6ca9ac5bf7958aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd3af4594b5eff7f02e84ff93f9627f943f53366a062d19e6ca9ac5bf7958aa", kill_on_drop: false }`
[INFO] [stdout] 6dd3af4594b5eff7f02e84ff93f9627f943f53366a062d19e6ca9ac5bf7958aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8b46caf152b80f4927173a5889cf3cf5b938f81ca38c4c383fd5f4bb8fcbcfe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c8b46caf152b80f4927173a5889cf3cf5b938f81ca38c4c383fd5f4bb8fcbcfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling quartz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `Command { std: "docker" "inspect" "c8b46caf152b80f4927173a5889cf3cf5b938f81ca38c4c383fd5f4bb8fcbcfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8b46caf152b80f4927173a5889cf3cf5b938f81ca38c4c383fd5f4bb8fcbcfe", kill_on_drop: false }`
[INFO] [stdout] c8b46caf152b80f4927173a5889cf3cf5b938f81ca38c4c383fd5f4bb8fcbcfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4da3c7ba7ff15b7d64ee0ee42dee8ffc4397f78d5cfffcb3c42a0287480f5876
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4da3c7ba7ff15b7d64ee0ee42dee8ffc4397f78d5cfffcb3c42a0287480f5876", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/quartz-8b2b6fd25483857e)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test lexer::tests::test_run_lexer ... ok
[INFO] [stdout] test typechecker::tests::test_typecheck_fail ... ok
[INFO] [stdout] test parser::tests::test_run_parser_fail ... ok
[INFO] [stdout] test typechecker::tests::test_typecheck ... ok
[INFO] [stdout] test parser::tests::test_run_parser ... ok
[INFO] [stdout] test runtime::tests::test_runtime_with_env ... ok
[INFO] [stdout] test code_gen::tests::test_gen_code ... ok
[INFO] [stdout] test runtime::tests::test_runtime ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4da3c7ba7ff15b7d64ee0ee42dee8ffc4397f78d5cfffcb3c42a0287480f5876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da3c7ba7ff15b7d64ee0ee42dee8ffc4397f78d5cfffcb3c42a0287480f5876", kill_on_drop: false }`
[INFO] [stdout] 4da3c7ba7ff15b7d64ee0ee42dee8ffc4397f78d5cfffcb3c42a0287480f5876