[INFO] cloning repository https://github.com/henryhazelton/hello-world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/henryhazelton/hello-world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryhazelton%2Fhello-world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenryhazelton%2Fhello-world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0619fda49b3c828c633ed06bf43c49acb5743d9b
[INFO] testing henryhazelton/hello-world 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%2Fhenryhazelton%2Fhello-world" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/henryhazelton/hello-world
[INFO] finished tweaking git repo https://github.com/henryhazelton/hello-world
[INFO] tweaked toml for git repo https://github.com/henryhazelton/hello-world written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/henryhazelton/hello-world 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/henryhazelton/hello-world 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] fe52239265a01096c238f51e9fc914f7cbdfd35c9141a05596d39f9f008bc888
[INFO] running `Command { std: "docker" "start" "-a" "fe52239265a01096c238f51e9fc914f7cbdfd35c9141a05596d39f9f008bc888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe52239265a01096c238f51e9fc914f7cbdfd35c9141a05596d39f9f008bc888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe52239265a01096c238f51e9fc914f7cbdfd35c9141a05596d39f9f008bc888", kill_on_drop: false }`
[INFO] [stdout] fe52239265a01096c238f51e9fc914f7cbdfd35c9141a05596d39f9f008bc888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e99a86b1db1544da40039018e62269fd96a75e6b637414755bc1d0deb3ee7631
[INFO] running `Command { std: "docker" "start" "-a" "e99a86b1db1544da40039018e62269fd96a75e6b637414755bc1d0deb3ee7631", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling hello-world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `random` and `rng`
[INFO] [stdout]  --> src/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{prelude::*, random, rng};
[INFO] [stdout]   |                        ^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Option<&i32>` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/main.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     println!("{}", secret_number);
[INFO] [stdout]    |               --   ^^^^^^^^^^^^^ `Option<&i32>` cannot be formatted with the default formatter
[INFO] [stdout]    |               |
[INFO] [stdout]    |               required by this formatting parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `Option<&i32>`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello-world` (bin "hello-world") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e99a86b1db1544da40039018e62269fd96a75e6b637414755bc1d0deb3ee7631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e99a86b1db1544da40039018e62269fd96a75e6b637414755bc1d0deb3ee7631", kill_on_drop: false }`
[INFO] [stdout] e99a86b1db1544da40039018e62269fd96a75e6b637414755bc1d0deb3ee7631
