[INFO] fetching crate zkvmc-trace 0.0.1...
[INFO] testing zkvmc-trace-0.0.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate zkvmc-trace 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate zkvmc-trace 0.0.1
[INFO] finished tweaking crates.io crate zkvmc-trace 0.0.1
[INFO] tweaked toml for crates.io crate zkvmc-trace 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zkvmc-trace 0.0.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zkvmc-trace 0.0.1 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 925b04a87484de2907076b3fb690d4887399cdf394faa12b704520df5a77293b
[INFO] running `Command { std: "docker" "start" "-a" "925b04a87484de2907076b3fb690d4887399cdf394faa12b704520df5a77293b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "925b04a87484de2907076b3fb690d4887399cdf394faa12b704520df5a77293b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925b04a87484de2907076b3fb690d4887399cdf394faa12b704520df5a77293b", kill_on_drop: false }`
[INFO] [stdout] 925b04a87484de2907076b3fb690d4887399cdf394faa12b704520df5a77293b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8928beb85f1dd256c5268680e6774c6affffddd4739e0fe0931130b2c8aeb8b4
[INFO] running `Command { std: "docker" "start" "-a" "8928beb85f1dd256c5268680e6774c6affffddd4739e0fe0931130b2c8aeb8b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling zkvmc-trace v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Collector` is never used
[INFO] [stdout]  --> src/collect.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Collector {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "8928beb85f1dd256c5268680e6774c6affffddd4739e0fe0931130b2c8aeb8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8928beb85f1dd256c5268680e6774c6affffddd4739e0fe0931130b2c8aeb8b4", kill_on_drop: false }`
[INFO] [stdout] 8928beb85f1dd256c5268680e6774c6affffddd4739e0fe0931130b2c8aeb8b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a0634d287fe937465d22fd24523ce1b535aaec8f7579ee299748fe994065919
[INFO] running `Command { std: "docker" "start" "-a" "6a0634d287fe937465d22fd24523ce1b535aaec8f7579ee299748fe994065919", kill_on_drop: false }`
[INFO] [stderr]    Compiling zkvmc-trace v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Collector` is never used
[INFO] [stdout]  --> src/collect.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Collector {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Collector` is never used
[INFO] [stdout]  --> src/collect.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Collector {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "6a0634d287fe937465d22fd24523ce1b535aaec8f7579ee299748fe994065919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a0634d287fe937465d22fd24523ce1b535aaec8f7579ee299748fe994065919", kill_on_drop: false }`
[INFO] [stdout] 6a0634d287fe937465d22fd24523ce1b535aaec8f7579ee299748fe994065919
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c4a28374982f90c57434fd8e689ca982f19b47643fa8626598612bb944faa16e
[INFO] running `Command { std: "docker" "start" "-a" "c4a28374982f90c57434fd8e689ca982f19b47643fa8626598612bb944faa16e", kill_on_drop: false }`
[INFO] [stderr] warning: trait `Collector` is never used
[INFO] [stderr]  --> src/collect.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub trait Collector {
[INFO] [stderr]   |           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `zkvmc-trace` (lib) generated 1 warning
[INFO] [stderr] warning: `zkvmc-trace` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zkvmc_trace-6a2aeb55c421ee15)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] [stderr]    Doc-tests zkvmc_trace
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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" "c4a28374982f90c57434fd8e689ca982f19b47643fa8626598612bb944faa16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a28374982f90c57434fd8e689ca982f19b47643fa8626598612bb944faa16e", kill_on_drop: false }`
[INFO] [stdout] c4a28374982f90c57434fd8e689ca982f19b47643fa8626598612bb944faa16e