[INFO] cloning repository https://github.com/yskim308/rust-walk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yskim308/rust-walk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyskim308%2Frust-walk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyskim308%2Frust-walk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 183b1b15516b496dabf16b1af7ef2625f12b307a
[INFO] checking yskim308/rust-walk against master#cb40c25f6aebb637163d26bf76a680ed6e5d1eda for pr-156157-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyskim308%2Frust-walk" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yskim308/rust-walk
[INFO] finished tweaking git repo https://github.com/yskim308/rust-walk
[INFO] tweaked toml for git repo https://github.com/yskim308/rust-walk written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yskim308/rust-walk on toolchain cb40c25f6aebb637163d26bf76a680ed6e5d1eda
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yskim308/rust-walk 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" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78270731a83489ea543e1e07e4f99969676fe8aef61542dd2cc23e43f0faf09a
[INFO] running `Command { std: "docker" "start" "-a" "78270731a83489ea543e1e07e4f99969676fe8aef61542dd2cc23e43f0faf09a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78270731a83489ea543e1e07e4f99969676fe8aef61542dd2cc23e43f0faf09a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78270731a83489ea543e1e07e4f99969676fe8aef61542dd2cc23e43f0faf09a", kill_on_drop: false }`
[INFO] [stdout] 78270731a83489ea543e1e07e4f99969676fe8aef61542dd2cc23e43f0faf09a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6dfb0d6a3ecd4e7ac0eaaa8a8645707eeb81b1c3b6acc53b66e471863582684
[INFO] running `Command { std: "docker" "start" "-a" "e6dfb0d6a3ecd4e7ac0eaaa8a8645707eeb81b1c3b6acc53b66e471863582684", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/resolver.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |             _ => todo!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/resolver.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Stmt::Block(stmts) => self.resolve_block(stmts),
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] 29 |             Stmt::Var(name, initializer) => self.resolve_var_stmt(name, initializer),
[INFO] [stdout]    |             ---------------------------- matches some of the same values
[INFO] [stdout] 30 |             Stmt::Function(fun_def) => {
[INFO] [stdout]    |             ----------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 35 |             Stmt::Expression(expr) => self.resolve_expr(expr),
[INFO] [stdout]    |             ---------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 55 |             _ => todo!(),
[INFO] [stdout]    |             ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/resolver.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |             _ => todo!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/resolver.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Stmt::Block(stmts) => self.resolve_block(stmts),
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] 29 |             Stmt::Var(name, initializer) => self.resolve_var_stmt(name, initializer),
[INFO] [stdout]    |             ---------------------------- matches some of the same values
[INFO] [stdout] 30 |             Stmt::Function(fun_def) => {
[INFO] [stdout]    |             ----------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 35 |             Stmt::Expression(expr) => self.resolve_expr(expr),
[INFO] [stdout]    |             ---------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 55 |             _ => todo!(),
[INFO] [stdout]    |             ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interpreter` and `scopes` are never read
[INFO] [stdout]   --> src/resolver.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Resolver {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 14 |     interpreter: Interpreter,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 15 |     scopes: Vec<HashMap<String, bool>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/resolver.rs:26:8
[INFO] [stdout]     |
[INFO] [stdout]  18 | impl Resolver {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  26 |     fn resolve_stmt(&mut self, stmt: &Stmt) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  59 |     fn resolve_function_stmt(&mut self, fun_def: &FunctionDefinition) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     fn resolve_expr(&mut self, expr: &Expr) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn resolve_assign_expr(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     fn resolve_var_expr(&mut self, name: &Token, expr: &Expr) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn resolve_var_local(&mut self, expr: &Expr, name: &Token) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn resolve_block(&mut self, stmts: &[Stmt]) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn resolve_var_stmt(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 166 |     fn begin_scope(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 170 |     fn end_scope(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn declare(&mut self, name: &Token) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn define(&mut self, name: &Token) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `interpreter` and `scopes` are never read
[INFO] [stdout]   --> src/resolver.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Resolver {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 14 |     interpreter: Interpreter,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 15 |     scopes: Vec<HashMap<String, bool>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/resolver.rs:26:8
[INFO] [stdout]     |
[INFO] [stdout]  18 | impl Resolver {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  26 |     fn resolve_stmt(&mut self, stmt: &Stmt) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  59 |     fn resolve_function_stmt(&mut self, fun_def: &FunctionDefinition) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     fn resolve_expr(&mut self, expr: &Expr) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn resolve_assign_expr(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     fn resolve_var_expr(&mut self, name: &Token, expr: &Expr) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn resolve_var_local(&mut self, expr: &Expr, name: &Token) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn resolve_block(&mut self, stmts: &[Stmt]) -> Result<(), RuntimeSignal> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn resolve_var_stmt(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 166 |     fn begin_scope(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 170 |     fn end_scope(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn declare(&mut self, name: &Token) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn define(&mut self, name: &Token) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "e6dfb0d6a3ecd4e7ac0eaaa8a8645707eeb81b1c3b6acc53b66e471863582684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6dfb0d6a3ecd4e7ac0eaaa8a8645707eeb81b1c3b6acc53b66e471863582684", kill_on_drop: false }`
[INFO] [stdout] e6dfb0d6a3ecd4e7ac0eaaa8a8645707eeb81b1c3b6acc53b66e471863582684
