[INFO] cloning repository https://github.com/yousefmoazzam/bst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yousefmoazzam/bst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyousefmoazzam%2Fbst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyousefmoazzam%2Fbst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ad132806e8a12340da44c6e1390aae6cc8c65d9
[INFO] checking yousefmoazzam/bst against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for 2025-12-16-next-solver-global
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyousefmoazzam%2Fbst" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yousefmoazzam/bst
[INFO] finished tweaking git repo https://github.com/yousefmoazzam/bst
[INFO] tweaked toml for git repo https://github.com/yousefmoazzam/bst written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yousefmoazzam/bst on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yousefmoazzam/bst 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" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5b82694b4d89fd80308afb779c307668875e418131c9036d902c37b15ba6bf8
[INFO] running `Command { std: "docker" "start" "-a" "a5b82694b4d89fd80308afb779c307668875e418131c9036d902c37b15ba6bf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5b82694b4d89fd80308afb779c307668875e418131c9036d902c37b15ba6bf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5b82694b4d89fd80308afb779c307668875e418131c9036d902c37b15ba6bf8", kill_on_drop: false }`
[INFO] [stdout] a5b82694b4d89fd80308afb779c307668875e418131c9036d902c37b15ba6bf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab800f17a45c46cbf1bb8cfafb532cdcf6f4b98e4e22af1a6a2418dce03beb79
[INFO] running `Command { std: "docker" "start" "-a" "ab800f17a45c46cbf1bb8cfafb532cdcf6f4b98e4e22af1a6a2418dce03beb79", kill_on_drop: false }`
[INFO] [stderr]     Checking bst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/bst.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bst` is never constructed
[INFO] [stdout]   --> src/bst.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Bst {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, and `insert_recurse` are never used
[INFO] [stdout]   --> src/bst.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Bst {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 15 |     fn new() -> Bst {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn insert(&mut self, value: u8) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn insert_recurse(&self, node: &Box<RefCell<Node>>, value: u8) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "ab800f17a45c46cbf1bb8cfafb532cdcf6f4b98e4e22af1a6a2418dce03beb79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab800f17a45c46cbf1bb8cfafb532cdcf6f4b98e4e22af1a6a2418dce03beb79", kill_on_drop: false }`
[INFO] [stdout] ab800f17a45c46cbf1bb8cfafb532cdcf6f4b98e4e22af1a6a2418dce03beb79