[INFO] cloning repository https://github.com/tracymedcalf/lox-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tracymedcalf/lox-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracymedcalf%2Flox-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracymedcalf%2Flox-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf1554d15dda145a716faa1f8b3753da407e865d
[INFO] checking tracymedcalf/lox-interpreter against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracymedcalf%2Flox-interpreter" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tracymedcalf/lox-interpreter on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tracymedcalf/lox-interpreter
[INFO] finished tweaking git repo https://github.com/tracymedcalf/lox-interpreter
[INFO] tweaked toml for git repo https://github.com/tracymedcalf/lox-interpreter written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tracymedcalf/lox-interpreter 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50126c5253a07e444cd7280a80f0565c10a44ea2ec51dd9b0424ed44c4522c45
[INFO] running `Command { std: "docker" "start" "-a" "50126c5253a07e444cd7280a80f0565c10a44ea2ec51dd9b0424ed44c4522c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50126c5253a07e444cd7280a80f0565c10a44ea2ec51dd9b0424ed44c4522c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50126c5253a07e444cd7280a80f0565c10a44ea2ec51dd9b0424ed44c4522c45", kill_on_drop: false }`
[INFO] [stdout] 50126c5253a07e444cd7280a80f0565c10a44ea2ec51dd9b0424ed44c4522c45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da44a2156961577c908254cb48c5a157a8fdafc1a35814d785074cd68e8ea47a
[INFO] running `Command { std: "docker" "start" "-a" "da44a2156961577c908254cb48c5a157a8fdafc1a35814d785074cd68e8ea47a", kill_on_drop: false }`
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]   --> src/interpreter.rs:84:32
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn finish_class(&mut self, class: ClassStruct) {}
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `call`
[INFO] [stdout]    --> src/interpreter.rs:372:30
[INFO] [stdout]     |
[INFO] [stdout] 372 |     fn call_class(&mut self, call: &Call, class: &IClass, closing_paren: &Token) -> InterpResult {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_call`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `closing_paren`
[INFO] [stdout]    --> src/interpreter.rs:372:59
[INFO] [stdout]     |
[INFO] [stdout] 372 |     fn call_class(&mut self, call: &Call, class: &IClass, closing_paren: &Token) -> InterpResult {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closing_paren`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `class`
[INFO] [stdout]   --> src/interpreter.rs:84:32
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn finish_class(&mut self, class: ClassStruct) {}
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_class`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `call`
[INFO] [stdout]    --> src/interpreter.rs:372:30
[INFO] [stdout]     |
[INFO] [stdout] 372 |     fn call_class(&mut self, call: &Call, class: &IClass, closing_paren: &Token) -> InterpResult {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_call`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `closing_paren`
[INFO] [stdout]    --> src/interpreter.rs:372:59
[INFO] [stdout]     |
[INFO] [stdout] 372 |     fn call_class(&mut self, call: &Call, class: &IClass, closing_paren: &Token) -> InterpResult {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closing_paren`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]    --> src/ast.rs:295:12
[INFO] [stdout]     |
[INFO] [stdout] 294 | impl Ast {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] 295 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_link` is never used
[INFO] [stdout]   --> src/environment.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 19 |     fn new_link() -> Link {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/environment.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Environment {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn new() -> Environment {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `finish_class` is never used
[INFO] [stdout]   --> src/interpreter.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl Interpreter {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn finish_class(&mut self, class: ClassStruct) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_var` is never used
[INFO] [stdout]  --> src/test_utils.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn new_var(s: &str) -> Token {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scan_parse` is never used
[INFO] [stdout]   --> src/test_utils.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn scan_parse(s: &str) -> Ast {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_run` is never used
[INFO] [stdout]   --> src/test_utils.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn test_run(code: &str) -> Interpreter {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]    --> src/ast.rs:295:12
[INFO] [stdout]     |
[INFO] [stdout] 294 | impl Ast {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] 295 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_link` is never used
[INFO] [stdout]   --> src/environment.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 19 |     fn new_link() -> Link {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/environment.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Environment {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn new() -> Environment {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `finish_class` is never used
[INFO] [stdout]   --> src/interpreter.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl Interpreter {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn finish_class(&mut self, class: ClassStruct) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "da44a2156961577c908254cb48c5a157a8fdafc1a35814d785074cd68e8ea47a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da44a2156961577c908254cb48c5a157a8fdafc1a35814d785074cd68e8ea47a", kill_on_drop: false }`
[INFO] [stdout] da44a2156961577c908254cb48c5a157a8fdafc1a35814d785074cd68e8ea47a