[INFO] cloning repository https://github.com/snhu-cs-22/crafting-interpreters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snhu-cs-22/crafting-interpreters" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnhu-cs-22%2Fcrafting-interpreters", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnhu-cs-22%2Fcrafting-interpreters'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a6b06b169f8044a83aa2b0be7f15f4526258529
[INFO] checking snhu-cs-22/crafting-interpreters against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnhu-cs-22%2Fcrafting-interpreters" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snhu-cs-22/crafting-interpreters 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/snhu-cs-22/crafting-interpreters
[INFO] finished tweaking git repo https://github.com/snhu-cs-22/crafting-interpreters
[INFO] tweaked toml for git repo https://github.com/snhu-cs-22/crafting-interpreters written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/snhu-cs-22/crafting-interpreters 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dee84e423340e9ddaf133c06a7e0ac8e2f1554489e65da18e75166f6fb3198af
[INFO] running `Command { std: "docker" "start" "-a" "dee84e423340e9ddaf133c06a7e0ac8e2f1554489e65da18e75166f6fb3198af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dee84e423340e9ddaf133c06a7e0ac8e2f1554489e65da18e75166f6fb3198af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dee84e423340e9ddaf133c06a7e0ac8e2f1554489e65da18e75166f6fb3198af", kill_on_drop: false }`
[INFO] [stdout] dee84e423340e9ddaf133c06a7e0ac8e2f1554489e65da18e75166f6fb3198af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f0a4d714e68b49035f50d226739147b7a310ca0babd88d040e9f942762e44c5c
[INFO] running `Command { std: "docker" "start" "-a" "f0a4d714e68b49035f50d226739147b7a310ca0babd88d040e9f942762e44c5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]     Checking crafting-interpreters v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `1` and `3` are never read
[INFO] [stdout]   --> src/treewalk/expr.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Ternary(Box<Expr>, Token, Box<Expr>, Token, Box<Expr>),
[INFO] [stdout]    |     -------            ^^^^^             ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Ternary(Box<Expr>, (), Box<Expr>, (), Box<Expr>),
[INFO] [stdout]    |                        ~~             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treewalk/stmt.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Return(Token, Box<Expr>),
[INFO] [stdout]    |     ------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Return((), Box<Expr>),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `start` is never used
[INFO] [stdout]    --> src/bytecode/scanner.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 78  | impl Scanner<'_> {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 167 |     fn start(&self, index: usize) -> char {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/treewalk/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         reader.read_line(&mut line);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let _ = reader.read_line(&mut line);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/treewalk/mod.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     interpreter.interpret(&statements);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let _ = interpreter.interpret(&statements);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bytecode/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         reader.read_line(&mut line);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = reader.read_line(&mut line);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `1` and `3` are never read
[INFO] [stdout]   --> src/treewalk/expr.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Ternary(Box<Expr>, Token, Box<Expr>, Token, Box<Expr>),
[INFO] [stdout]    |     -------            ^^^^^             ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Ternary(Box<Expr>, (), Box<Expr>, (), Box<Expr>),
[INFO] [stdout]    |                        ~~             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treewalk/stmt.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Return(Token, Box<Expr>),
[INFO] [stdout]    |     ------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Return((), Box<Expr>),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `start` is never used
[INFO] [stdout]    --> src/bytecode/scanner.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 78  | impl Scanner<'_> {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 167 |     fn start(&self, index: usize) -> char {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/treewalk/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         reader.read_line(&mut line);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let _ = reader.read_line(&mut line);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/treewalk/mod.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     interpreter.interpret(&statements);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let _ = interpreter.interpret(&statements);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bytecode/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         reader.read_line(&mut line);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = reader.read_line(&mut line);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `treewalk`
[INFO] [stdout]  --> src/main.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crafting_interpreters::{bytecode, treewalk};
[INFO] [stdout]   |                                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `treewalk`
[INFO] [stdout]  --> src/main.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crafting_interpreters::{bytecode, treewalk};
[INFO] [stdout]   |                                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "f0a4d714e68b49035f50d226739147b7a310ca0babd88d040e9f942762e44c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a4d714e68b49035f50d226739147b7a310ca0babd88d040e9f942762e44c5c", kill_on_drop: false }`
[INFO] [stdout] f0a4d714e68b49035f50d226739147b7a310ca0babd88d040e9f942762e44c5c