[INFO] cloning repository https://github.com/matty316/why
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matty316/why" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatty316%2Fwhy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatty316%2Fwhy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa29f0607d39461620a43309a1aaaf2237300885
[INFO] testing matty316/why against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatty316%2Fwhy" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/matty316/why
[INFO] finished tweaking git repo https://github.com/matty316/why
[INFO] tweaked toml for git repo https://github.com/matty316/why written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/matty316/why on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/matty316/why 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1d58ff8e620a2e5c5559f4fac44049c9bef2058b1a05b47e7ce449322c027e0
[INFO] running `Command { std: "docker" "start" "-a" "e1d58ff8e620a2e5c5559f4fac44049c9bef2058b1a05b47e7ce449322c027e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1d58ff8e620a2e5c5559f4fac44049c9bef2058b1a05b47e7ce449322c027e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d58ff8e620a2e5c5559f4fac44049c9bef2058b1a05b47e7ce449322c027e0", kill_on_drop: false }`
[INFO] [stdout] e1d58ff8e620a2e5c5559f4fac44049c9bef2058b1a05b47e7ce449322c027e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14faa8c1fce405fcf5476f3cc314b27548d786fadb86e8ddc0169e696584564a
[INFO] running `Command { std: "docker" "start" "-a" "14faa8c1fce405fcf5476f3cc314b27548d786fadb86e8ddc0169e696584564a", kill_on_drop: false }`
[INFO] [stderr]    Compiling why-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Scanner` is never constructed
[INFO] [stdout]  --> src/scanner.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Scanner {
[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 associated items are never used
[INFO] [stdout]    --> src/scanner.rs:11:12
[INFO] [stdout]     |
[INFO] [stdout]  10 | impl Scanner {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout]  11 |     pub fn new(source: String) -> Scanner {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  15 |     pub fn scan_token(&mut self) -> Token {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  78 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     fn peek(&self) -> u8 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |     fn read(&mut self) -> u8 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn make_token(token_type: TokenType, literal: &str) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     fn is_alpha(c: u8) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn is_digit(c: u8) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |     fn is_alphanumeric(c: u8) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn read_ident(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     fn check_keyword(bytes: &[u8]) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |     fn rest(bytes: &[u8], rest: &[u8], token_type: TokenType) -> TokenType {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 166 |     fn read_num(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     fn read_string(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Token` is never constructed
[INFO] [stdout]  --> src/token.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Token {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TokenType` is never used
[INFO] [stdout]  --> src/token.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum TokenType {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]  --> src/parser.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Parser {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/parser.rs:11:8
[INFO] [stdout]     |
[INFO] [stdout]  10 | impl Parser {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout]  11 |     fn new(mut scanner: Scanner) -> Parser {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  18 |     fn parse(&mut self) -> Program {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  29 |     fn parse_stmt(&mut self) -> Stmt {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  34 |     fn parse_var(&mut self) -> Stmt {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  51 |     fn parse_expr_stmt(&mut self) -> Stmt {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  56 |     fn parse_func(&mut self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  67 |     fn parse_params(&mut self) -> Vec<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |     fn parse_block(&mut self) -> Vec<Stmt> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn parse_expr(&mut self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn parse_term(&mut self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn parse_factor(&mut self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn parse_primary(&self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn read(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 141 |     fn expect(&mut self, token: TokenType) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expr` is never used
[INFO] [stdout]  --> src/ast.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Expr {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Stmt` is never used
[INFO] [stdout]   --> src/ast.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Stmt {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]   --> src/ast.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Program {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "14faa8c1fce405fcf5476f3cc314b27548d786fadb86e8ddc0169e696584564a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14faa8c1fce405fcf5476f3cc314b27548d786fadb86e8ddc0169e696584564a", kill_on_drop: false }`
[INFO] [stdout] 14faa8c1fce405fcf5476f3cc314b27548d786fadb86e8ddc0169e696584564a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 284e79535c7153e93a778b34b3525a0a8f1552244445d8b9794a4e06b5b58eab
[INFO] running `Command { std: "docker" "start" "-a" "284e79535c7153e93a778b34b3525a0a8f1552244445d8b9794a4e06b5b58eab", kill_on_drop: false }`
[INFO] [stderr]    Compiling why-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "284e79535c7153e93a778b34b3525a0a8f1552244445d8b9794a4e06b5b58eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "284e79535c7153e93a778b34b3525a0a8f1552244445d8b9794a4e06b5b58eab", kill_on_drop: false }`
[INFO] [stdout] 284e79535c7153e93a778b34b3525a0a8f1552244445d8b9794a4e06b5b58eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 64ccb0e4f97a55931c5e5142fffa366dcc4efb5bc868e3eef6b3f40daca9821b
[INFO] running `Command { std: "docker" "start" "-a" "64ccb0e4f97a55931c5e5142fffa366dcc4efb5bc868e3eef6b3f40daca9821b", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/why_lang-4b6b7e8a5bdd511c)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test parser::tests::parse_func ... ok
[INFO] [stdout] test parser::tests::parse_ident ... ok
[INFO] [stdout] test parser::tests::parse_string ... ok
[INFO] [stdout] test parser::tests::parse_binary ... ok
[INFO] [stdout] test parser::tests::parse_var ... ok
[INFO] [stdout] test parser::tests::parse_bool ... ok
[INFO] [stdout] test parser::tests::parse_int ... ok
[INFO] [stdout] test scanner::tests::scan ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "64ccb0e4f97a55931c5e5142fffa366dcc4efb5bc868e3eef6b3f40daca9821b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64ccb0e4f97a55931c5e5142fffa366dcc4efb5bc868e3eef6b3f40daca9821b", kill_on_drop: false }`
[INFO] [stdout] 64ccb0e4f97a55931c5e5142fffa366dcc4efb5bc868e3eef6b3f40daca9821b
