[INFO] cloning repository https://github.com/neverRare/butter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/neverRare/butter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FneverRare%2Fbutter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FneverRare%2Fbutter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21bb09ce7e75ea18bba457ec980fb202e84d98b3
[INFO] testing neverRare/butter against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FneverRare%2Fbutter" "/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/neverRare/butter on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/neverRare/butter
[INFO] finished tweaking git repo https://github.com/neverRare/butter
[INFO] tweaked toml for git repo https://github.com/neverRare/butter written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/neverRare/butter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c592d15b18aac064a072d860065256ace4659fb8efa822f3b2f2f196f932471b
[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" "c592d15b18aac064a072d860065256ace4659fb8efa822f3b2f2f196f932471b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c592d15b18aac064a072d860065256ace4659fb8efa822f3b2f2f196f932471b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c592d15b18aac064a072d860065256ace4659fb8efa822f3b2f2f196f932471b", kill_on_drop: false }`
[INFO] [stdout] c592d15b18aac064a072d860065256ace4659fb8efa822f3b2f2f196f932471b
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2be97610e83781c30b13b92b05c8e504aa38910967fc269a4f3a2a7f51c6e86d
[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" "2be97610e83781c30b13b92b05c8e504aa38910967fc269a4f3a2a7f51c6e86d", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling hir v0.1.0 (/opt/rustwide/workdir/hir)
[INFO] [stderr]    Compiling type-system v0.1.0 (/opt/rustwide/workdir/type-system)
[INFO] [stderr]    Compiling combine v4.6.0
[INFO] [stdout] warning: unused variable: `statements`
[INFO] [stdout]    --> type-system/src/lib.rs:300:14
[INFO] [stdout]     |
[INFO] [stdout] 300 | pub fn infer(statements: Vec<Statement<()>>) -> Result<Vec<Statement<Type>>, TypeError> {
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_statements`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]   --> type-system/src/cons.rs:49:19
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub(super) fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]   --> type-system/src/cons.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub(super) fn unify_with(
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/cons.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn substitute(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]    --> type-system/src/cons.rs:151:19
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub(super) fn unify_with(
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersection`
[INFO] [stdout]    --> type-system/src/cons.rs:202:4
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn intersection<K, A, B>(a: &mut HashMap<K, A>, b: &mut HashMap<K, B>) -> HashMap<K, (A, B)>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> type-system/src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_var`
[INFO] [stdout]   --> type-system/src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new_var(&mut self) -> Var<'a> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_named`
[INFO] [stdout]   --> type-system/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new_named(&mut self, name: &'a str) -> Var<'a> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]   --> type-system/src/lib.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]   --> type-system/src/lib.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn unify_with(self, other: Self, var_state: &mut VarState<'a>) -> Result<Subs<'a>, TypeError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]    --> type-system/src/lib.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn unify_with(self, other: Self) -> Result<Subs<'a>, TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kind`
[INFO] [stdout]    --> type-system/src/lib.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn kind(&self) -> Kind {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate`
[INFO] [stdout]    --> type-system/src/lib.rs:199:8
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn instantiate(self, var_state: &mut VarState<'a>) -> Result<Type<'a>, TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> type-system/src/lib.rs:222:8
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn hashmap(&self) -> &HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap_mut`
[INFO] [stdout]    --> type-system/src/lib.rs:229:8
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn into_hashmap(self) -> HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> type-system/src/lib.rs:237:8
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn get(&self, var: Var<'a>) -> Option<Type1<'a>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]    --> type-system/src/lib.rs:240:8
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn insert(&mut self, var: Var<'a>, ty: Type1<'a>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `filter_off`
[INFO] [stdout]    --> type-system/src/lib.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn filter_off(&mut self, vars: &HashSet<KindedVar<'a>>) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compose_with`
[INFO] [stdout]    --> type-system/src/lib.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn compose_with(&mut self, other: Self) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Env`
[INFO] [stdout]    --> type-system/src/lib.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 | struct Env<'a>(HashMap<Var<'a>, Scheme<'a>>);
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn hashmap(&self) -> &HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap_mut`
[INFO] [stdout]    --> type-system/src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]    --> type-system/src/lib.rs:275:8
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn remove(&mut self, var: Var<'a>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generalize`
[INFO] [stdout]    --> type-system/src/lib.rs:290:8
[INFO] [stdout]     |
[INFO] [stdout] 290 |     fn generalize(&self, ty: Type<'a>) -> Scheme<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.36s
[INFO] running `Command { std: "docker" "inspect" "2be97610e83781c30b13b92b05c8e504aa38910967fc269a4f3a2a7f51c6e86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be97610e83781c30b13b92b05c8e504aa38910967fc269a4f3a2a7f51c6e86d", kill_on_drop: false }`
[INFO] [stdout] 2be97610e83781c30b13b92b05c8e504aa38910967fc269a4f3a2a7f51c6e86d
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a04767fdfcc70ceb7cbe8b8b11ef30bced5b8a3f013614d355ef13459f718939
[INFO] running `Command { std: "docker" "start" "-a" "a04767fdfcc70ceb7cbe8b8b11ef30bced5b8a3f013614d355ef13459f718939", kill_on_drop: false }`
[INFO] [stderr]    Compiling hir v0.1.0 (/opt/rustwide/workdir/hir)
[INFO] [stdout] warning: unused variable: `statements`
[INFO] [stdout]    --> type-system/src/lib.rs:300:14
[INFO] [stdout]     |
[INFO] [stdout] 300 | pub fn infer(statements: Vec<Statement<()>>) -> Result<Vec<Statement<Type>>, TypeError> {
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_statements`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling type-system v0.1.0 (/opt/rustwide/workdir/type-system)
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]   --> type-system/src/cons.rs:49:19
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub(super) fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]   --> type-system/src/cons.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub(super) fn unify_with(
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/cons.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn substitute(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]    --> type-system/src/cons.rs:151:19
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub(super) fn unify_with(
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersection`
[INFO] [stdout]    --> type-system/src/cons.rs:202:4
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn intersection<K, A, B>(a: &mut HashMap<K, A>, b: &mut HashMap<K, B>) -> HashMap<K, (A, B)>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> type-system/src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_var`
[INFO] [stdout]   --> type-system/src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new_var(&mut self) -> Var<'a> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_named`
[INFO] [stdout]   --> type-system/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new_named(&mut self, name: &'a str) -> Var<'a> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]   --> type-system/src/lib.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]   --> type-system/src/lib.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn unify_with(self, other: Self, var_state: &mut VarState<'a>) -> Result<Subs<'a>, TypeError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]    --> type-system/src/lib.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn unify_with(self, other: Self) -> Result<Subs<'a>, TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kind`
[INFO] [stdout]    --> type-system/src/lib.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn kind(&self) -> Kind {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate`
[INFO] [stdout]    --> type-system/src/lib.rs:199:8
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn instantiate(self, var_state: &mut VarState<'a>) -> Result<Type<'a>, TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> type-system/src/lib.rs:222:8
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn hashmap(&self) -> &HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap_mut`
[INFO] [stdout]    --> type-system/src/lib.rs:229:8
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn into_hashmap(self) -> HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> type-system/src/lib.rs:237:8
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn get(&self, var: Var<'a>) -> Option<Type1<'a>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]    --> type-system/src/lib.rs:240:8
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn insert(&mut self, var: Var<'a>, ty: Type1<'a>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `filter_off`
[INFO] [stdout]    --> type-system/src/lib.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn filter_off(&mut self, vars: &HashSet<KindedVar<'a>>) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compose_with`
[INFO] [stdout]    --> type-system/src/lib.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn compose_with(&mut self, other: Self) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Env`
[INFO] [stdout]    --> type-system/src/lib.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 | struct Env<'a>(HashMap<Var<'a>, Scheme<'a>>);
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn hashmap(&self) -> &HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap_mut`
[INFO] [stdout]    --> type-system/src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]    --> type-system/src/lib.rs:275:8
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn remove(&mut self, var: Var<'a>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generalize`
[INFO] [stdout]    --> type-system/src/lib.rs:290:8
[INFO] [stdout]     |
[INFO] [stdout] 290 |     fn generalize(&self, ty: Type<'a>) -> Scheme<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `statements`
[INFO] [stdout]    --> type-system/src/lib.rs:300:14
[INFO] [stdout]     |
[INFO] [stdout] 300 | pub fn infer(statements: Vec<Statement<()>>) -> Result<Vec<Statement<Type>>, TypeError> {
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_statements`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]   --> type-system/src/cons.rs:49:19
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub(super) fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]   --> type-system/src/cons.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub(super) fn unify_with(
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/cons.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn substitute(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]    --> type-system/src/cons.rs:151:19
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub(super) fn unify_with(
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersection`
[INFO] [stdout]    --> type-system/src/cons.rs:202:4
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn intersection<K, A, B>(a: &mut HashMap<K, A>, b: &mut HashMap<K, B>) -> HashMap<K, (A, B)>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> type-system/src/lib.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_var`
[INFO] [stdout]   --> type-system/src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new_var(&mut self) -> Var<'a> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_named`
[INFO] [stdout]   --> type-system/src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn new_named(&mut self, name: &'a str) -> Var<'a> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]   --> type-system/src/lib.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]   --> type-system/src/lib.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn unify_with(self, other: Self, var_state: &mut VarState<'a>) -> Result<Subs<'a>, TypeError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unify_with`
[INFO] [stdout]    --> type-system/src/lib.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn unify_with(self, other: Self) -> Result<Subs<'a>, TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kind`
[INFO] [stdout]    --> type-system/src/lib.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn kind(&self) -> Kind {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate`
[INFO] [stdout]    --> type-system/src/lib.rs:199:8
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn instantiate(self, var_state: &mut VarState<'a>) -> Result<Type<'a>, TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> type-system/src/lib.rs:222:8
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn hashmap(&self) -> &HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap_mut`
[INFO] [stdout]    --> type-system/src/lib.rs:229:8
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn into_hashmap(self) -> HashMap<Var<'a>, Type1<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> type-system/src/lib.rs:237:8
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn get(&self, var: Var<'a>) -> Option<Type1<'a>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]    --> type-system/src/lib.rs:240:8
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn insert(&mut self, var: Var<'a>, ty: Type1<'a>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `filter_off`
[INFO] [stdout]    --> type-system/src/lib.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn filter_off(&mut self, vars: &HashSet<KindedVar<'a>>) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compose_with`
[INFO] [stdout]    --> type-system/src/lib.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn compose_with(&mut self, other: Self) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Env`
[INFO] [stdout]    --> type-system/src/lib.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 | struct Env<'a>(HashMap<Var<'a>, Scheme<'a>>);
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap`
[INFO] [stdout]    --> type-system/src/lib.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn hashmap(&self) -> &HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hashmap_mut`
[INFO] [stdout]    --> type-system/src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]    --> type-system/src/lib.rs:275:8
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn remove(&mut self, var: Var<'a>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_vars`
[INFO] [stdout]    --> type-system/src/lib.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `substitute`
[INFO] [stdout]    --> type-system/src/lib.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generalize`
[INFO] [stdout]    --> type-system/src/lib.rs:290:8
[INFO] [stdout]     |
[INFO] [stdout] 290 |     fn generalize(&self, ty: Type<'a>) -> Scheme<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 17.82s
[INFO] running `Command { std: "docker" "inspect" "a04767fdfcc70ceb7cbe8b8b11ef30bced5b8a3f013614d355ef13459f718939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a04767fdfcc70ceb7cbe8b8b11ef30bced5b8a3f013614d355ef13459f718939", kill_on_drop: false }`
[INFO] [stdout] a04767fdfcc70ceb7cbe8b8b11ef30bced5b8a3f013614d355ef13459f718939
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 665eb302d8a4029f532196d523ebf6e4e6db8c10ce4c9d417d31317684f00295
[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" "665eb302d8a4029f532196d523ebf6e4e6db8c10ce4c9d417d31317684f00295", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `statements`
[INFO] [stderr]    --> type-system/src/lib.rs:300:14
[INFO] [stderr]     |
[INFO] [stderr] 300 | pub fn infer(statements: Vec<Statement<()>>) -> Result<Vec<Statement<Type>>, TypeError> {
[INFO] [stderr]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_statements`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]   --> type-system/src/cons.rs:49:19
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub(super) fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]   --> type-system/src/cons.rs:72:19
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub(super) fn unify_with(
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/cons.rs:118:8
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn substitute(
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]    --> type-system/src/cons.rs:151:19
[INFO] [stderr]     |
[INFO] [stderr] 151 |     pub(super) fn unify_with(
[INFO] [stderr]     |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intersection`
[INFO] [stderr]    --> type-system/src/cons.rs:202:4
[INFO] [stderr]     |
[INFO] [stderr] 202 | fn intersection<K, A, B>(a: &mut HashMap<K, A>, b: &mut HashMap<K, B>) -> HashMap<K, (A, B)>
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> type-system/src/lib.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_var`
[INFO] [stderr]   --> type-system/src/lib.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn new_var(&mut self) -> Var<'a> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_named`
[INFO] [stderr]   --> type-system/src/lib.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn new_named(&mut self, name: &'a str) -> Var<'a> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]   --> type-system/src/lib.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]   --> type-system/src/lib.rs:76:8
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn unify_with(self, other: Self, var_state: &mut VarState<'a>) -> Result<Subs<'a>, TypeError> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:115:8
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]    --> type-system/src/lib.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn unify_with(self, other: Self) -> Result<Subs<'a>, TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `kind`
[INFO] [stderr]    --> type-system/src/lib.rs:161:8
[INFO] [stderr]     |
[INFO] [stderr] 161 |     fn kind(&self) -> Kind {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `free_vars`
[INFO] [stderr]    --> type-system/src/lib.rs:167:8
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:173:8
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `free_vars`
[INFO] [stderr]    --> type-system/src/lib.rs:186:8
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:193:8
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `instantiate`
[INFO] [stderr]    --> type-system/src/lib.rs:199:8
[INFO] [stderr]     |
[INFO] [stderr] 199 |     fn instantiate(self, var_state: &mut VarState<'a>) -> Result<Type<'a>, TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> type-system/src/lib.rs:222:8
[INFO] [stderr]     |
[INFO] [stderr] 222 |     fn new() -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap`
[INFO] [stderr]    --> type-system/src/lib.rs:225:8
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn hashmap(&self) -> &HashMap<Var<'a>, Type1<'a>> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap_mut`
[INFO] [stderr]    --> type-system/src/lib.rs:229:8
[INFO] [stderr]     |
[INFO] [stderr] 229 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Type1<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `into_hashmap`
[INFO] [stderr]    --> type-system/src/lib.rs:233:8
[INFO] [stderr]     |
[INFO] [stderr] 233 |     fn into_hashmap(self) -> HashMap<Var<'a>, Type1<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]    --> type-system/src/lib.rs:237:8
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn get(&self, var: Var<'a>) -> Option<Type1<'a>> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]    --> type-system/src/lib.rs:240:8
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn insert(&mut self, var: Var<'a>, ty: Type1<'a>) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `filter_off`
[INFO] [stderr]    --> type-system/src/lib.rs:243:8
[INFO] [stderr]     |
[INFO] [stderr] 243 |     fn filter_off(&mut self, vars: &HashSet<KindedVar<'a>>) {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `compose_with`
[INFO] [stderr]    --> type-system/src/lib.rs:248:8
[INFO] [stderr]     |
[INFO] [stderr] 248 |     fn compose_with(&mut self, other: Self) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Env`
[INFO] [stderr]    --> type-system/src/lib.rs:265:8
[INFO] [stderr]     |
[INFO] [stderr] 265 | struct Env<'a>(HashMap<Var<'a>, Scheme<'a>>);
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap`
[INFO] [stderr]    --> type-system/src/lib.rs:267:8
[INFO] [stderr]     |
[INFO] [stderr] 267 |     fn hashmap(&self) -> &HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap_mut`
[INFO] [stderr]    --> type-system/src/lib.rs:271:8
[INFO] [stderr]     |
[INFO] [stderr] 271 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove`
[INFO] [stderr]    --> type-system/src/lib.rs:275:8
[INFO] [stderr]     |
[INFO] [stderr] 275 |     fn remove(&mut self, var: Var<'a>) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `free_vars`
[INFO] [stderr]    --> type-system/src/lib.rs:278:8
[INFO] [stderr]     |
[INFO] [stderr] 278 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:284:8
[INFO] [stderr]     |
[INFO] [stderr] 284 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `generalize`
[INFO] [stderr]    --> type-system/src/lib.rs:290:8
[INFO] [stderr]     |
[INFO] [stderr] 290 |     fn generalize(&self, ty: Type<'a>) -> Scheme<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 34 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `statements`
[INFO] [stderr]    --> type-system/src/lib.rs:300:14
[INFO] [stderr]     |
[INFO] [stderr] 300 | pub fn infer(statements: Vec<Statement<()>>) -> Result<Vec<Statement<Type>>, TypeError> {
[INFO] [stderr]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_statements`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]   --> type-system/src/cons.rs:49:19
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub(super) fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]   --> type-system/src/cons.rs:72:19
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub(super) fn unify_with(
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/cons.rs:118:8
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn substitute(
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]    --> type-system/src/cons.rs:151:19
[INFO] [stderr]     |
[INFO] [stderr] 151 |     pub(super) fn unify_with(
[INFO] [stderr]     |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intersection`
[INFO] [stderr]    --> type-system/src/cons.rs:202:4
[INFO] [stderr]     |
[INFO] [stderr] 202 | fn intersection<K, A, B>(a: &mut HashMap<K, A>, b: &mut HashMap<K, B>) -> HashMap<K, (A, B)>
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> type-system/src/lib.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_var`
[INFO] [stderr]   --> type-system/src/lib.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn new_var(&mut self) -> Var<'a> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_named`
[INFO] [stderr]   --> type-system/src/lib.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn new_named(&mut self, name: &'a str) -> Var<'a> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]   --> type-system/src/lib.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]   --> type-system/src/lib.rs:76:8
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn unify_with(self, other: Self, var_state: &mut VarState<'a>) -> Result<Subs<'a>, TypeError> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:115:8
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unify_with`
[INFO] [stderr]    --> type-system/src/lib.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn unify_with(self, other: Self) -> Result<Subs<'a>, TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `kind`
[INFO] [stderr]    --> type-system/src/lib.rs:161:8
[INFO] [stderr]     |
[INFO] [stderr] 161 |     fn kind(&self) -> Kind {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `free_vars`
[INFO] [stderr]    --> type-system/src/lib.rs:167:8
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:173:8
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `free_vars`
[INFO] [stderr]    --> type-system/src/lib.rs:186:8
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:193:8
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `instantiate`
[INFO] [stderr]    --> type-system/src/lib.rs:199:8
[INFO] [stderr]     |
[INFO] [stderr] 199 |     fn instantiate(self, var_state: &mut VarState<'a>) -> Result<Type<'a>, TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> type-system/src/lib.rs:222:8
[INFO] [stderr]     |
[INFO] [stderr] 222 |     fn new() -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap`
[INFO] [stderr]    --> type-system/src/lib.rs:225:8
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn hashmap(&self) -> &HashMap<Var<'a>, Type1<'a>> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap_mut`
[INFO] [stderr]    --> type-system/src/lib.rs:229:8
[INFO] [stderr]     |
[INFO] [stderr] 229 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Type1<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `into_hashmap`
[INFO] [stderr]    --> type-system/src/lib.rs:233:8
[INFO] [stderr]     |
[INFO] [stderr] 233 |     fn into_hashmap(self) -> HashMap<Var<'a>, Type1<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]    --> type-system/src/lib.rs:237:8
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn get(&self, var: Var<'a>) -> Option<Type1<'a>> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]    --> type-system/src/lib.rs:240:8
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn insert(&mut self, var: Var<'a>, ty: Type1<'a>) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `filter_off`
[INFO] [stderr]    --> type-system/src/lib.rs:243:8
[INFO] [stderr]     |
[INFO] [stderr] 243 |     fn filter_off(&mut self, vars: &HashSet<KindedVar<'a>>) {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `compose_with`
[INFO] [stderr]    --> type-system/src/lib.rs:248:8
[INFO] [stderr]     |
[INFO] [stderr] 248 |     fn compose_with(&mut self, other: Self) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Env`
[INFO] [stderr]    --> type-system/src/lib.rs:265:8
[INFO] [stderr]     |
[INFO] [stderr] 265 | struct Env<'a>(HashMap<Var<'a>, Scheme<'a>>);
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap`
[INFO] [stderr]    --> type-system/src/lib.rs:267:8
[INFO] [stderr]     |
[INFO] [stderr] 267 |     fn hashmap(&self) -> &HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hashmap_mut`
[INFO] [stderr]    --> type-system/src/lib.rs:271:8
[INFO] [stderr]     |
[INFO] [stderr] 271 |     fn hashmap_mut(&mut self) -> &mut HashMap<Var<'a>, Scheme<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove`
[INFO] [stderr]    --> type-system/src/lib.rs:275:8
[INFO] [stderr]     |
[INFO] [stderr] 275 |     fn remove(&mut self, var: Var<'a>) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `free_vars`
[INFO] [stderr]    --> type-system/src/lib.rs:278:8
[INFO] [stderr]     |
[INFO] [stderr] 278 |     fn free_vars(&self) -> HashSet<KindedVar<'a>> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]    --> type-system/src/lib.rs:284:8
[INFO] [stderr]     |
[INFO] [stderr] 284 |     fn substitute(&mut self, subs: &Subs<'a>) -> Result<(), TypeError> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `generalize`
[INFO] [stderr]    --> type-system/src/lib.rs:290:8
[INFO] [stderr]     |
[INFO] [stderr] 290 |     fn generalize(&self, ty: Type<'a>) -> Scheme<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 34 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hir-28a2c45d3efc7895)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parser-d5d07f952278a15a)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test expr::float::test::float_1 ... ok
[INFO] [stdout] test ident_keyword::test::non_ident ... ok
[INFO] [stdout] test ident_keyword::test::non_keyword ... ok
[INFO] [stdout] test ident_keyword::test::test_ident_or_keyword ... ok
[INFO] [stdout] test expr::test::right_associative ... ok
[INFO] [stdout] test expr::test::ignore_range ... ok
[INFO] [stdout] test expr::integer::test::hex ... ok
[INFO] [stdout] test expr::integer::test::decimal ... ok
[INFO] [stdout] test expr::test::ignore_higher_precedence ... ok
[INFO] [stdout] test expr::test::group ... ok
[INFO] [stdout] test ident_keyword::test::test_keyword ... ok
[INFO] [stdout] test expr::string::test::string ... ok
[INFO] [stdout] test expr::integer::test::oct ... ok
[INFO] [stdout] test test::insignificant ... ok
[INFO] [stdout] test expr::integer::test::bin ... ok
[INFO] [stdout] test expr::float::test::float_3 ... ok
[INFO] [stdout] test expr::float::test::not_float ... ok
[INFO] [stdout] test expr::float::test::float_2 ... ok
[INFO] [stdout] test statement::test::var ... ok
[INFO] [stdout] test statement::test::parallel_assign ... ok
[INFO] [stdout] test statement::test::chain_assign ... ok
[INFO] [stdout] test expr::test::precedence ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/type_system-ec6f0dda3886d36f)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hir
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests parser
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests type-system
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "665eb302d8a4029f532196d523ebf6e4e6db8c10ce4c9d417d31317684f00295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "665eb302d8a4029f532196d523ebf6e4e6db8c10ce4c9d417d31317684f00295", kill_on_drop: false }`
[INFO] [stdout] 665eb302d8a4029f532196d523ebf6e4e6db8c10ce4c9d417d31317684f00295