[INFO] fetching crate rbt 0.1.0...
[INFO] testing rbt-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate rbt 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate rbt 0.1.0
[INFO] finished tweaking crates.io crate rbt 0.1.0
[INFO] tweaked toml for crates.io crate rbt 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rbt 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rbt 0.1.0 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df69ca66335cacad061a406c0413ee23ef187cbb6b35b7a93654fc51b53f8135
[INFO] running `Command { std: "docker" "start" "-a" "df69ca66335cacad061a406c0413ee23ef187cbb6b35b7a93654fc51b53f8135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df69ca66335cacad061a406c0413ee23ef187cbb6b35b7a93654fc51b53f8135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df69ca66335cacad061a406c0413ee23ef187cbb6b35b7a93654fc51b53f8135", kill_on_drop: false }`
[INFO] [stdout] df69ca66335cacad061a406c0413ee23ef187cbb6b35b7a93654fc51b53f8135
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19153a61c98fec049e56fca4cf3f10a8194e480509a3216ee8d35c00455852b2
[INFO] running `Command { std: "docker" "start" "-a" "19153a61c98fec049e56fca4cf3f10a8194e480509a3216ee8d35c00455852b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling nix v0.19.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling shared_memory v0.11.3
[INFO] [stderr]    Compiling rbt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Topic` is never used
[INFO] [stdout]   --> src/main.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | trait Topic {
[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 `Root` is never constructed
[INFO] [stdout]   --> src/main.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Root {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.86s
[INFO] running `Command { std: "docker" "inspect" "19153a61c98fec049e56fca4cf3f10a8194e480509a3216ee8d35c00455852b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19153a61c98fec049e56fca4cf3f10a8194e480509a3216ee8d35c00455852b2", kill_on_drop: false }`
[INFO] [stdout] 19153a61c98fec049e56fca4cf3f10a8194e480509a3216ee8d35c00455852b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e78b0e5f92218ad4cdc05b50c8b20dbd685269e08f1003b9cad7da664f7000d
[INFO] running `Command { std: "docker" "start" "-a" "6e78b0e5f92218ad4cdc05b50c8b20dbd685269e08f1003b9cad7da664f7000d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rbt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Topic` is never used
[INFO] [stdout]   --> src/main.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | trait Topic {
[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 `Root` is never constructed
[INFO] [stdout]   --> src/main.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Root {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "6e78b0e5f92218ad4cdc05b50c8b20dbd685269e08f1003b9cad7da664f7000d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e78b0e5f92218ad4cdc05b50c8b20dbd685269e08f1003b9cad7da664f7000d", kill_on_drop: false }`
[INFO] [stdout] 6e78b0e5f92218ad4cdc05b50c8b20dbd685269e08f1003b9cad7da664f7000d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5ef2ba0b2a132c1ece0af67548480ec3d55c74ab758975381b14cc59edac997e
[INFO] running `Command { std: "docker" "start" "-a" "5ef2ba0b2a132c1ece0af67548480ec3d55c74ab758975381b14cc59edac997e", kill_on_drop: false }`
[INFO] [stderr] warning: trait `Topic` is never used
[INFO] [stdout] 
[INFO] [stderr]   --> src/main.rs:44:7
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stderr] 44 | trait Topic {
[INFO] [stderr]    |       ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Root` is never constructed
[INFO] [stderr]   --> src/main.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | struct Root {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rbt` (bin "rbt" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rbt-e652b82e5065188a)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5ef2ba0b2a132c1ece0af67548480ec3d55c74ab758975381b14cc59edac997e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ef2ba0b2a132c1ece0af67548480ec3d55c74ab758975381b14cc59edac997e", kill_on_drop: false }`
[INFO] [stdout] 5ef2ba0b2a132c1ece0af67548480ec3d55c74ab758975381b14cc59edac997e