[INFO] cloning repository https://github.com/cankaracelebi/tjq_typechecker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cankaracelebi/tjq_typechecker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcankaracelebi%2Ftjq_typechecker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcankaracelebi%2Ftjq_typechecker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2732ff78f76aa49c9d90ab5f7476075880d5cf85
[INFO] testing cankaracelebi/tjq_typechecker against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcankaracelebi%2Ftjq_typechecker" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cankaracelebi/tjq_typechecker
[INFO] finished tweaking git repo https://github.com/cankaracelebi/tjq_typechecker
[INFO] tweaked toml for git repo https://github.com/cankaracelebi/tjq_typechecker written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cankaracelebi/tjq_typechecker on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cankaracelebi/tjq_typechecker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbe0a01c51143be68d5ec52cb5444e9050f0b12e58f7a75509731b8b02ef8d9d
[INFO] running `Command { std: "docker" "start" "-a" "fbe0a01c51143be68d5ec52cb5444e9050f0b12e58f7a75509731b8b02ef8d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbe0a01c51143be68d5ec52cb5444e9050f0b12e58f7a75509731b8b02ef8d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbe0a01c51143be68d5ec52cb5444e9050f0b12e58f7a75509731b8b02ef8d9d", kill_on_drop: false }`
[INFO] [stdout] fbe0a01c51143be68d5ec52cb5444e9050f0b12e58f7a75509731b8b02ef8d9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48e92108fc62269efccf1232e9f3dfed7a3bc3228ff81c0434db17b1d575325d
[INFO] running `Command { std: "docker" "start" "-a" "48e92108fc62269efccf1232e9f3dfed7a3bc3228ff81c0434db17b1d575325d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ordered-float v4.6.0
[INFO] [stderr]    Compiling tjq_typechecker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/ast.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/infer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:349:13
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let tree = InferenceTree::new("T-LitString", &input, "String", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let tree = InferenceTree::new("T-LitNull", &input, "Null", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |         let tree = InferenceTree::new("T-LitNum", &input, "Num", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:383:9
[INFO] [stdout]     |
[INFO] [stdout] 383 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:384:9
[INFO] [stdout]     |
[INFO] [stdout] 384 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:393:9
[INFO] [stdout]     |
[INFO] [stdout] 393 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:405:9
[INFO] [stdout]     |
[INFO] [stdout] 405 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:406:9
[INFO] [stdout]     |
[INFO] [stdout] 406 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:412:9
[INFO] [stdout]     |
[INFO] [stdout] 412 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:413:9
[INFO] [stdout]     |
[INFO] [stdout] 413 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:414:9
[INFO] [stdout]     |
[INFO] [stdout] 414 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/infer.rs:57:8
[INFO] [stdout]     |
[INFO] [stdout]  40 | impl TypeInference {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  57 |     fn pretty_subst(&self, subst: &Subst) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     fn apply_subst_jtype(&self, subst: &Subst, ty: &JType) -> JType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn apply_subst_scheme(&self, subst: &Subst, scheme: &Scheme) -> Scheme {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn apply_subst_env(&self, subst: &Subst, env: &Env) -> Env {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn compose_subst(&self, s1: &Subst, s2: &Subst) -> Subst {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn free_type_vars(&self, ty: &Type) -> HashSet<TyVar> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 177 |     fn free_type_vars_jtype(&self, ty: &JType) -> HashSet<TyVar> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 202 |     fn occurs_check(&self, var: &TyVar, ty: &Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn unify(&self, t1: &Type, t2: &Type) -> Result<(Subst, InferenceTree), String> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 380 |     fn infer_abs(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 391 |     fn infer_app(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 402 |     fn infer_let(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 410 |     fn infer_tuple(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `Command { std: "docker" "inspect" "48e92108fc62269efccf1232e9f3dfed7a3bc3228ff81c0434db17b1d575325d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e92108fc62269efccf1232e9f3dfed7a3bc3228ff81c0434db17b1d575325d", kill_on_drop: false }`
[INFO] [stdout] 48e92108fc62269efccf1232e9f3dfed7a3bc3228ff81c0434db17b1d575325d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b43a3f454025e17d18c0905666b16966e01665d5fb3b8dbee5c0457ad025955
[INFO] running `Command { std: "docker" "start" "-a" "5b43a3f454025e17d18c0905666b16966e01665d5fb3b8dbee5c0457ad025955", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/ast.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/infer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:349:13
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let tree = InferenceTree::new("T-LitString", &input, "String", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let tree = InferenceTree::new("T-LitNull", &input, "Null", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |         let tree = InferenceTree::new("T-LitNum", &input, "Num", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:383:9
[INFO] [stdout]     |
[INFO] [stdout] 383 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tjq_typechecker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:384:9
[INFO] [stdout]     |
[INFO] [stdout] 384 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:393:9
[INFO] [stdout]     |
[INFO] [stdout] 393 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:405:9
[INFO] [stdout]     |
[INFO] [stdout] 405 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:406:9
[INFO] [stdout]     |
[INFO] [stdout] 406 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:412:9
[INFO] [stdout]     |
[INFO] [stdout] 412 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:413:9
[INFO] [stdout]     |
[INFO] [stdout] 413 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:414:9
[INFO] [stdout]     |
[INFO] [stdout] 414 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/infer.rs:57:8
[INFO] [stdout]     |
[INFO] [stdout]  40 | impl TypeInference {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  57 |     fn pretty_subst(&self, subst: &Subst) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     fn apply_subst_jtype(&self, subst: &Subst, ty: &JType) -> JType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn apply_subst_scheme(&self, subst: &Subst, scheme: &Scheme) -> Scheme {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn apply_subst_env(&self, subst: &Subst, env: &Env) -> Env {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn compose_subst(&self, s1: &Subst, s2: &Subst) -> Subst {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn free_type_vars(&self, ty: &Type) -> HashSet<TyVar> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 177 |     fn free_type_vars_jtype(&self, ty: &JType) -> HashSet<TyVar> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 202 |     fn occurs_check(&self, var: &TyVar, ty: &Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn unify(&self, t1: &Type, t2: &Type) -> Result<(Subst, InferenceTree), String> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 380 |     fn infer_abs(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 391 |     fn infer_app(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 402 |     fn infer_let(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 410 |     fn infer_tuple(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/ast.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/infer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:349:13
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let tree = InferenceTree::new("T-LitString", &input, "String", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let tree = InferenceTree::new("T-LitNull", &input, "Null", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]    --> src/infer.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |         let tree = InferenceTree::new("T-LitNum", &input, "Num", vec![]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:383:9
[INFO] [stdout]     |
[INFO] [stdout] 383 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:384:9
[INFO] [stdout]     |
[INFO] [stdout] 384 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:393:9
[INFO] [stdout]     |
[INFO] [stdout] 393 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:405:9
[INFO] [stdout]     |
[INFO] [stdout] 405 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:406:9
[INFO] [stdout]     |
[INFO] [stdout] 406 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/infer.rs:412:9
[INFO] [stdout]     |
[INFO] [stdout] 412 |         env: &Env,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/infer.rs:413:9
[INFO] [stdout]     |
[INFO] [stdout] 413 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/infer.rs:414:9
[INFO] [stdout]     |
[INFO] [stdout] 414 |         name: &str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/infer.rs:57:8
[INFO] [stdout]     |
[INFO] [stdout]  40 | impl TypeInference {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  57 |     fn pretty_subst(&self, subst: &Subst) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     fn apply_subst_jtype(&self, subst: &Subst, ty: &JType) -> JType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn apply_subst_scheme(&self, subst: &Subst, scheme: &Scheme) -> Scheme {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn apply_subst_env(&self, subst: &Subst, env: &Env) -> Env {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn compose_subst(&self, s1: &Subst, s2: &Subst) -> Subst {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn free_type_vars(&self, ty: &Type) -> HashSet<TyVar> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 177 |     fn free_type_vars_jtype(&self, ty: &JType) -> HashSet<TyVar> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 202 |     fn occurs_check(&self, var: &TyVar, ty: &Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn unify(&self, t1: &Type, t2: &Type) -> Result<(Subst, InferenceTree), String> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 380 |     fn infer_abs(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 391 |     fn infer_app(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 402 |     fn infer_let(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 410 |     fn infer_tuple(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "5b43a3f454025e17d18c0905666b16966e01665d5fb3b8dbee5c0457ad025955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b43a3f454025e17d18c0905666b16966e01665d5fb3b8dbee5c0457ad025955", kill_on_drop: false }`
[INFO] [stdout] 5b43a3f454025e17d18c0905666b16966e01665d5fb3b8dbee5c0457ad025955
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 08e18edf90caf9a91e0243785310e587cb0577259550843325048224cab9318b
[INFO] running `Command { std: "docker" "start" "-a" "08e18edf90caf9a91e0243785310e587cb0577259550843325048224cab9318b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/ast.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/infer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]    --> src/infer.rs:349:13
[INFO] [stderr]     |
[INFO] [stderr] 349 |         let tree = InferenceTree::new("T-LitString", &input, "String", vec![]);
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]    --> src/infer.rs:361:13
[INFO] [stderr]     |
[INFO] [stderr] 361 |         let tree = InferenceTree::new("T-LitNull", &input, "Null", vec![]);
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]    --> src/infer.rs:373:13
[INFO] [stderr]     |
[INFO] [stderr] 373 |         let tree = InferenceTree::new("T-LitNum", &input, "Num", vec![]);
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/infer.rs:382:9
[INFO] [stderr]     |
[INFO] [stderr] 382 |         env: &Env,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/infer.rs:383:9
[INFO] [stderr]     |
[INFO] [stderr] 383 |         expr: &Expr,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/infer.rs:384:9
[INFO] [stderr]     |
[INFO] [stderr] 384 |         name: &str,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/infer.rs:393:9
[INFO] [stderr]     |
[INFO] [stderr] 393 |         env: &Env,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/infer.rs:394:9
[INFO] [stderr]     |
[INFO] [stderr] 394 |         expr: &Expr,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/infer.rs:395:9
[INFO] [stderr]     |
[INFO] [stderr] 395 |         name: &str,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/infer.rs:404:9
[INFO] [stderr]     |
[INFO] [stderr] 404 |         env: &Env,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/infer.rs:405:9
[INFO] [stderr]     |
[INFO] [stderr] 405 |         expr: &Expr,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/infer.rs:406:9
[INFO] [stderr]     |
[INFO] [stderr] 406 |         name: &str,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/infer.rs:412:9
[INFO] [stderr]     |
[INFO] [stderr] 412 |         env: &Env,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/infer.rs:413:9
[INFO] [stderr]     |
[INFO] [stderr] 413 |         expr: &Expr,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/infer.rs:414:9
[INFO] [stderr]     |
[INFO] [stderr] 414 |         name: &str,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: multiple methods are never used
[INFO] [stderr]    --> src/infer.rs:57:8
[INFO] [stderr]     |
[INFO] [stderr]  40 | impl TypeInference {
[INFO] [stderr]     | ------------------ methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  57 |     fn pretty_subst(&self, subst: &Subst) -> String {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  85 |     fn apply_subst_jtype(&self, subst: &Subst, ty: &JType) -> JType {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |     fn apply_subst_scheme(&self, subst: &Subst, scheme: &Scheme) -> Scheme {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 135 |     fn apply_subst_env(&self, subst: &Subst, env: &Env) -> Env {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 140 |     fn compose_subst(&self, s1: &Subst, s2: &Subst) -> Subst {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 147 |     fn free_type_vars(&self, ty: &Type) -> HashSet<TyVar> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 177 |     fn free_type_vars_jtype(&self, ty: &JType) -> HashSet<TyVar> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 202 |     fn occurs_check(&self, var: &TyVar, ty: &Type) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 205 |     fn unify(&self, t1: &Type, t2: &Type) -> Result<(Subst, InferenceTree), String> {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 380 |     fn infer_abs(
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 391 |     fn infer_app(
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 402 |     fn infer_let(
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 410 |     fn infer_tuple(
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tjq_typechecker` (lib) generated 18 warnings (run `cargo fix --lib -p tjq_typechecker` to apply 17 suggestions)
[INFO] [stderr] warning: `tjq_typechecker` (lib test) generated 18 warnings (18 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tjq_typechecker-0dfea48804e344a7)
[INFO] [stdout] running 1 test
[INFO] [stdout] test infer::tests::test_infer_lit_int ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- infer::tests::test_infer_lit_int stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'infer::tests::test_infer_lit_int' (24) panicked at src/infer.rs:431:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: "T-Int"
[INFO] [stdout]  right: "T-LitInt"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d2dcce3ddf2 - std[3b51380354919863]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d2dcce3ddf2 - std[3b51380354919863]::backtrace_rs::backtrace::trace_unsynchronized::<std[3b51380354919863]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d2dcce3ddf2 - std[3b51380354919863]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5d2dcce3ddf2 - <<std[3b51380354919863]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[27de1724e4349be2]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5d2dcce5262a - <core[27de1724e4349be2]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5d2dcce5262a - core[27de1724e4349be2]::fmt::write
[INFO] [stdout]    6:     0x5d2dcce42bf6 - std[3b51380354919863]::io::default_write_fmt::<alloc[a57f19327c0ad893]::vec::Vec<u8>>
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d2dcce42bf6 - <alloc[a57f19327c0ad893]::vec::Vec<u8> as std[3b51380354919863]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5d2dcce1c58f - <std[3b51380354919863]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5d2dcce1c58f - std[3b51380354919863]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5d2dcce360d9 - std[3b51380354919863]::panicking::default_hook
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5d2dccdd1a2e - <alloc[a57f19327c0ad893]::boxed::Box<dyn for<'a, 'b> core[27de1724e4349be2]::ops::function::Fn<(&'a std[3b51380354919863]::panic::PanicHookInfo<'b>,), Output = ()> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::marker::Send> as core[27de1724e4349be2]::ops::function::Fn<(&std[3b51380354919863]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5d2dccdd1a2e - test[182b2e79ecd7bbd9]::test_main_with_exit_callback::<test[182b2e79ecd7bbd9]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d2dcce36292 - <alloc[a57f19327c0ad893]::boxed::Box<dyn for<'a, 'b> core[27de1724e4349be2]::ops::function::Fn<(&'a std[3b51380354919863]::panic::PanicHookInfo<'b>,), Output = ()> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::marker::Send> as core[27de1724e4349be2]::ops::function::Fn<(&std[3b51380354919863]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5d2dcce36292 - std[3b51380354919863]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5d2dcce1c648 - std[3b51380354919863]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5d2dcce118c9 - std[3b51380354919863]::sys::backtrace::__rust_end_short_backtrace::<std[3b51380354919863]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5d2dcce1d49d - __rustc[d79c0ace40940972]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5d2dcce52cfc - core[27de1724e4349be2]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5d2dcce52bb3 - core[27de1724e4349be2]::panicking::assert_failed_inner
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x5d2dccdba697 - core[27de1724e4349be2]::panicking::assert_failed::<alloc[a57f19327c0ad893]::string::String, &str>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x5d2dccdc152e - tjq_typechecker[c962643a8a9ce172]::infer::tests::test_infer_lit_int
[INFO] [stdout]                                at /opt/rustwide/workdir/src/infer.rs:431:9
[INFO] [stdout]   22:     0x5d2dccdc0627 - tjq_typechecker[c962643a8a9ce172]::infer::tests::test_infer_lit_int::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/infer.rs:424:28
[INFO] [stdout]   23:     0x5d2dccdc30d6 - <tjq_typechecker[c962643a8a9ce172]::infer::tests::test_infer_lit_int::{closure#0} as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5d2dccdc5ddb - <fn() -> core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5d2dccdc5ddb - test[182b2e79ecd7bbd9]::__rust_begin_short_backtrace::<core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>, fn() -> core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x5d2dccdd263a - test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x5d2dccdd263a - <core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x5d2dccdd263a - std[3b51380354919863]::panicking::catch_unwind::do_call::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}>, core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x5d2dccdd263a - std[3b51380354919863]::panicking::catch_unwind::<core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>, core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x5d2dccdd263a - std[3b51380354919863]::panic::catch_unwind::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<test[182b2e79ecd7bbd9]::run_test_in_process::{closure#0}>, core[27de1724e4349be2]::result::Result<(), alloc[a57f19327c0ad893]::string::String>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5d2dccdd263a - test[182b2e79ecd7bbd9]::run_test_in_process
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5d2dccdd263a - test[182b2e79ecd7bbd9]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5d2dccdcdbe4 - test[182b2e79ecd7bbd9]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5d2dccdcdbe4 - std[3b51380354919863]::sys::backtrace::__rust_begin_short_backtrace::<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5d2dccdd5132 - std[3b51380354919863]::thread::lifecycle::spawn_unchecked::<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5d2dccdd5132 - <core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x5d2dccdd5132 - std[3b51380354919863]::panicking::catch_unwind::do_call::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5d2dccdd5132 - std[3b51380354919863]::panicking::catch_unwind::<(), core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5d2dccdd5132 - std[3b51380354919863]::panic::catch_unwind::<core[27de1724e4349be2]::panic::unwind_safe::AssertUnwindSafe<std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5d2dccdd5132 - std[3b51380354919863]::thread::lifecycle::spawn_unchecked::<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5d2dccdd5132 - <std[3b51380354919863]::thread::lifecycle::spawn_unchecked<test[182b2e79ecd7bbd9]::run_test::{closure#1}, ()>::{closure#1} as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5d2dcce3d69f - <alloc[a57f19327c0ad893]::boxed::Box<dyn core[27de1724e4349be2]::ops::function::FnOnce<(), Output = ()> + core[27de1724e4349be2]::marker::Send> as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x5d2dcce3d69f - <std[3b51380354919863]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   44:     0x72dc4d3eaaa4 - <unknown>
[INFO] [stdout]   45:     0x72dc4d477a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     infer::tests::test_infer_lit_int
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "08e18edf90caf9a91e0243785310e587cb0577259550843325048224cab9318b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e18edf90caf9a91e0243785310e587cb0577259550843325048224cab9318b", kill_on_drop: false }`
[INFO] [stdout] 08e18edf90caf9a91e0243785310e587cb0577259550843325048224cab9318b
