[INFO] cloning repository https://github.com/cbloodsworth/rubb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cbloodsworth/rubb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbloodsworth%2Frubb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbloodsworth%2Frubb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26e9a0cdfc997d7efe738cd5bb73bdf88c654dc5
[INFO] checking cbloodsworth/rubb against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbloodsworth%2Frubb" "/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/cbloodsworth/rubb on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cbloodsworth/rubb
[INFO] finished tweaking git repo https://github.com/cbloodsworth/rubb
[INFO] tweaked toml for git repo https://github.com/cbloodsworth/rubb written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cbloodsworth/rubb 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1170f49f7a5df629ab2e41df174fd4e9a11bb53ba42b3ce39aebbe9a2912b5c
[INFO] running `Command { std: "docker" "start" "-a" "d1170f49f7a5df629ab2e41df174fd4e9a11bb53ba42b3ce39aebbe9a2912b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1170f49f7a5df629ab2e41df174fd4e9a11bb53ba42b3ce39aebbe9a2912b5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1170f49f7a5df629ab2e41df174fd4e9a11bb53ba42b3ce39aebbe9a2912b5c", kill_on_drop: false }`
[INFO] [stdout] d1170f49f7a5df629ab2e41df174fd4e9a11bb53ba42b3ce39aebbe9a2912b5c
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19fd9d2be15acf7b572df62c338935a93c92bebee8290c2ae0d753199db180ef
[INFO] running `Command { std: "docker" "start" "-a" "19fd9d2be15acf7b572df62c338935a93c92bebee8290c2ae0d753199db180ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]     Checking rubb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/lexer.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Result, Context, anyhow};
[INFO] [stdout]   |                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/lexer.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Result, Context, anyhow};
[INFO] [stdout]   |                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program`
[INFO] [stdout]   --> src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn run(program: String) {
[INFO] [stdout]    |            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `interpret` is never used
[INFO] [stdout]  --> src/interpreter.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn interpret() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program`
[INFO] [stdout]   --> src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn run(program: String) {
[INFO] [stdout]    |            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/main.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Result, Context, anyhow};
[INFO] [stdout]   |                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/main.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Result, Context, anyhow};
[INFO] [stdout]   |                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let tokens: Vec<Token> = Lexer::lex(&content)
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `interpret` is never used
[INFO] [stdout]  --> src/interpreter.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn interpret() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let tokens: Vec<Token> = Lexer::lex(&content)
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "19fd9d2be15acf7b572df62c338935a93c92bebee8290c2ae0d753199db180ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19fd9d2be15acf7b572df62c338935a93c92bebee8290c2ae0d753199db180ef", kill_on_drop: false }`
[INFO] [stdout] 19fd9d2be15acf7b572df62c338935a93c92bebee8290c2ae0d753199db180ef