[INFO] cloning repository https://github.com/miningape/basic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/miningape/basic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminingape%2Fbasic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminingape%2Fbasic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98e4483e13917b75da4fd2e9a0fbb172a229bc48
[INFO] checking miningape/basic against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminingape%2Fbasic" "/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/miningape/basic 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/miningape/basic
[INFO] finished tweaking git repo https://github.com/miningape/basic
[INFO] tweaked toml for git repo https://github.com/miningape/basic written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/miningape/basic 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] 4be66f5a3dfcd7d1cddbab860c9f675cbe63bcea9dce76a833b93af01170dc21
[INFO] running `Command { std: "docker" "start" "-a" "4be66f5a3dfcd7d1cddbab860c9f675cbe63bcea9dce76a833b93af01170dc21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4be66f5a3dfcd7d1cddbab860c9f675cbe63bcea9dce76a833b93af01170dc21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4be66f5a3dfcd7d1cddbab860c9f675cbe63bcea9dce76a833b93af01170dc21", kill_on_drop: false }`
[INFO] [stdout] 4be66f5a3dfcd7d1cddbab860c9f675cbe63bcea9dce76a833b93af01170dc21
[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] 5a8db3254c3b80e275fcf1c0e611150d16d7b2c2bff3b677bf6b40b4c3bf3d81
[INFO] running `Command { std: "docker" "start" "-a" "5a8db3254c3b80e275fcf1c0e611150d16d7b2c2bff3b677bf6b40b4c3bf3d81", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking text_io v0.1.12
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking basic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     borrow::BorrowMut,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     borrow::BorrowMut,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |     fn interpret(&self, interpreter: &mut Interpreter) -> Result<Literal, (String, Token)> {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:349:22
[INFO] [stdout]     |
[INFO] [stdout] 349 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:349:53
[INFO] [stdout]     |
[INFO] [stdout] 349 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |     fn interpret(&self, interpreter: &mut Interpreter) -> Result<Literal, (String, Token)> {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:349:22
[INFO] [stdout]     |
[INFO] [stdout] 349 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:349:53
[INFO] [stdout]     |
[INFO] [stdout] 349 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:485:22
[INFO] [stdout]     |
[INFO] [stdout] 485 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:485:53
[INFO] [stdout]     |
[INFO] [stdout] 485 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:639:22
[INFO] [stdout]     |
[INFO] [stdout] 639 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:639:53
[INFO] [stdout]     |
[INFO] [stdout] 639 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:682:29
[INFO] [stdout]     |
[INFO] [stdout] 682 |     fn interpret(&mut self, interpreter: &mut Interpreter) -> Result<Operation, (String, Token)> {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:485:22
[INFO] [stdout]     |
[INFO] [stdout] 485 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:485:53
[INFO] [stdout]     |
[INFO] [stdout] 485 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:708:29
[INFO] [stdout]     |
[INFO] [stdout] 708 |     fn interpret(&mut self, interpreter: &mut Interpreter) -> Result<Operation, (String, Token)> {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:771:29
[INFO] [stdout]     |
[INFO] [stdout] 771 |     fn interpret(&mut self, interpreter: &mut Interpreter) -> Result<Operation, (String, Token)> {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:639:22
[INFO] [stdout]     |
[INFO] [stdout] 639 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:639:53
[INFO] [stdout]     |
[INFO] [stdout] 639 |     fn assign(&self, interpreter: &mut Interpreter, value: Literal) -> Result<(), String> {
[INFO] [stdout]     |                                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:682:29
[INFO] [stdout]     |
[INFO] [stdout] 682 |     fn interpret(&mut self, interpreter: &mut Interpreter) -> Result<Operation, (String, Token)> {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:708:29
[INFO] [stdout]     |
[INFO] [stdout] 708 |     fn interpret(&mut self, interpreter: &mut Interpreter) -> Result<Operation, (String, Token)> {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interpreter`
[INFO] [stdout]    --> src/main.rs:771:29
[INFO] [stdout]     |
[INFO] [stdout] 771 |     fn interpret(&mut self, interpreter: &mut Interpreter) -> Result<Operation, (String, Token)> {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/main.rs:357:5
[INFO] [stdout]     |
[INFO] [stdout] 355 | struct Variable {
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] 356 |     name: String,
[INFO] [stdout] 357 |     token: Token,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Variable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `arguments`, and `body` are never read
[INFO] [stdout]    --> src/main.rs:766:5
[INFO] [stdout]     |
[INFO] [stdout] 765 | struct FunctionDefinition {
[INFO] [stdout]     |        ------------------ fields in this struct
[INFO] [stdout] 766 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 767 |     arguments: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 768 |     body: Rc<RefCell<dyn Expression>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FunctionDefinition` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]     --> src/main.rs:1426:5
[INFO] [stdout]      |
[INFO] [stdout] 1425 | struct Environment {
[INFO] [stdout]      |        ----------- field in this struct
[INFO] [stdout] 1426 |     parent: Option<Rc<RefCell<Environment>>>,
[INFO] [stdout]      |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]     --> src/main.rs:1446:12
[INFO] [stdout]      |
[INFO] [stdout] 1430 | impl Environment {
[INFO] [stdout]      | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1446 |     pub fn print(&mut self) -> String {
[INFO] [stdout]      |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_environment`, `pop_environment`, `print`, and `clone` are never used
[INFO] [stdout]     --> src/main.rs:1473:12
[INFO] [stdout]      |
[INFO] [stdout] 1465 | impl Interpreter {
[INFO] [stdout]      | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1473 |     pub fn push_environment(&mut self) -> Rc<RefCell<Environment>> {
[INFO] [stdout]      |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1483 |     pub fn pop_environment(&mut self) {
[INFO] [stdout]      |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1500 |     pub fn print(&mut self) -> String {
[INFO] [stdout]      |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1504 |     pub fn clone(&mut self) -> Interpreter {
[INFO] [stdout]      |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/main.rs:357:5
[INFO] [stdout]     |
[INFO] [stdout] 355 | struct Variable {
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] 356 |     name: String,
[INFO] [stdout] 357 |     token: Token,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Variable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `arguments`, and `body` are never read
[INFO] [stdout]    --> src/main.rs:766:5
[INFO] [stdout]     |
[INFO] [stdout] 765 | struct FunctionDefinition {
[INFO] [stdout]     |        ------------------ fields in this struct
[INFO] [stdout] 766 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 767 |     arguments: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 768 |     body: Rc<RefCell<dyn Expression>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FunctionDefinition` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop_environment` is never used
[INFO] [stdout]     --> src/main.rs:1483:12
[INFO] [stdout]      |
[INFO] [stdout] 1465 | impl Interpreter {
[INFO] [stdout]      | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1483 |     pub fn pop_environment(&mut self) {
[INFO] [stdout]      |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "5a8db3254c3b80e275fcf1c0e611150d16d7b2c2bff3b677bf6b40b4c3bf3d81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a8db3254c3b80e275fcf1c0e611150d16d7b2c2bff3b677bf6b40b4c3bf3d81", kill_on_drop: false }`
[INFO] [stdout] 5a8db3254c3b80e275fcf1c0e611150d16d7b2c2bff3b677bf6b40b4c3bf3d81