[INFO] cloning repository https://github.com/ayush78490/RustCompiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ayush78490/RustCompiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayush78490%2FRustCompiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayush78490%2FRustCompiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28188f2d8f98709dbdb97c7d5b7fed95f436d0e1
[INFO] checking ayush78490/RustCompiler against master#cccf075eba88363269e8589ebb8d40874cc542d8 for pr-142681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayush78490%2FRustCompiler" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ayush78490/RustCompiler
[INFO] finished tweaking git repo https://github.com/ayush78490/RustCompiler
[INFO] tweaked toml for git repo https://github.com/ayush78490/RustCompiler written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ayush78490/RustCompiler on toolchain cccf075eba88363269e8589ebb8d40874cc542d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cccf075eba88363269e8589ebb8d40874cc542d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ayush78490/RustCompiler 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" "+cccf075eba88363269e8589ebb8d40874cc542d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+cccf075eba88363269e8589ebb8d40874cc542d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2105a52ec0b81c4f3aca110e1418953426e6d9fc8f282a450075439ac6e3f78
[INFO] running `Command { std: "docker" "start" "-a" "a2105a52ec0b81c4f3aca110e1418953426e6d9fc8f282a450075439ac6e3f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2105a52ec0b81c4f3aca110e1418953426e6d9fc8f282a450075439ac6e3f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2105a52ec0b81c4f3aca110e1418953426e6d9fc8f282a450075439ac6e3f78", kill_on_drop: false }`
[INFO] [stdout] a2105a52ec0b81c4f3aca110e1418953426e6d9fc8f282a450075439ac6e3f78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+cccf075eba88363269e8589ebb8d40874cc542d8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08f4b0b9b6cfff9d9dec54d8c21b2206ef935a10ac9583ffa7ecc1b8bbb654c2
[INFO] running `Command { std: "docker" "start" "-a" "08f4b0b9b6cfff9d9dec54d8c21b2206ef935a10ac9583ffa7ecc1b8bbb654c2", kill_on_drop: false }`
[INFO] [stderr]     Checking compiler-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `assignment`
[INFO] [stdout]   --> src/ast.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let assignment = ASTNode::assignment("x", expr.clone());
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_assignment`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_stmt`
[INFO] [stdout]   --> src/ast.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let print_stmt = ASTNode::print(ASTNode::variable("x"));
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `if_stmt`
[INFO] [stdout]    --> src/ast.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let if_stmt = ASTNode::if_statement(
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_if_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated functions are never used
[INFO] [stdout]   --> src/ast.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl ASTNode {
[INFO] [stdout]    | ------------ associated functions in this implementation
[INFO] [stdout] 30 |     pub fn number(value: i32) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn binary_op(left: ASTNode, op: Token, right: ASTNode) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn variable(name: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn assignment(name: &str, value: ASTNode) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn print(value: ASTNode) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn if_statement(condition: ASTNode, then_branch: ASTNode, else_branch: Option<ASTNode>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn while_loop(condition: ASTNode, body: ASTNode) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn example_usage() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `assignment`
[INFO] [stdout]   --> src/ast.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let assignment = ASTNode::assignment("x", expr.clone());
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_assignment`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_stmt`
[INFO] [stdout]   --> src/ast.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let print_stmt = ASTNode::print(ASTNode::variable("x"));
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `if_stmt`
[INFO] [stdout]    --> src/ast.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let if_stmt = ASTNode::if_statement(
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_if_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "08f4b0b9b6cfff9d9dec54d8c21b2206ef935a10ac9583ffa7ecc1b8bbb654c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f4b0b9b6cfff9d9dec54d8c21b2206ef935a10ac9583ffa7ecc1b8bbb654c2", kill_on_drop: false }`
[INFO] [stdout] 08f4b0b9b6cfff9d9dec54d8c21b2206ef935a10ac9583ffa7ecc1b8bbb654c2