[INFO] fetching crate r2u2_core 4.2.4...
[INFO] testing r2u2_core-4.2.4 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate r2u2_core 4.2.4 into /workspace/builds/worker-3-tc1/source
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate r2u2_core 4.2.4
[INFO] finished tweaking crates.io crate r2u2_core 4.2.4
[INFO] tweaked toml for crates.io crate r2u2_core 4.2.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate r2u2_core 4.2.4 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate r2u2_core 4.2.4 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded verus_state_machines_macros v0.0.0-2026-02-08-0120
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.5.0
[INFO] [stderr]   Downloaded const_env_impl v0.1.5
[INFO] [stderr]   Downloaded unicode-ident v1.0.23
[INFO] [stderr]   Downloaded nb v0.1.3
[INFO] [stderr]   Downloaded const_env v0.1.5
[INFO] [stderr]   Downloaded nb v1.1.0
[INFO] [stderr]   Downloaded volatile-register v0.2.2
[INFO] [stderr]   Downloaded vcell v0.1.3
[INFO] [stderr]   Downloaded bare-metal v0.2.5
[INFO] [stderr]   Downloaded libc-print v0.1.23
[INFO] [stderr]   Downloaded verus_builtin v0.0.0-2026-02-08-0120
[INFO] [stderr]   Downloaded embedded-hal v0.2.7
[INFO] [stderr]   Downloaded bitfield v0.13.2
[INFO] [stderr]   Downloaded verus_builtin_macros v0.0.0-2026-02-08-0120
[INFO] [stderr]   Downloaded verus_prettyplease v0.0.0-2026-01-25-0057
[INFO] [stderr]   Downloaded cortex-m v0.7.7
[INFO] [stderr]   Downloaded vstd v0.0.0-2026-02-08-0120
[INFO] [stderr]   Downloaded verus_syn v0.0.0-2026-01-25-0057
[INFO] [stderr]   Downloaded fixedstr v0.5.10
[INFO] [stderr]   Downloaded libc v0.2.181
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411
[INFO] running `Command { std: "docker" "start" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.23
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling verus_prettyplease v0.0.0-2026-01-25-0057
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling vstd v0.0.0-2026-02-08-0120
[INFO] [stderr]    Compiling verus_builtin v0.0.0-2026-02-08-0120
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling verus_syn v0.0.0-2026-01-25-0057
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling const_env_impl v0.1.5
[INFO] [stderr]    Compiling const_env v0.1.5
[INFO] [stderr]    Compiling verus_state_machines_macros v0.0.0-2026-02-08-0120
[INFO] [stderr]    Compiling verus_builtin_macros v0.0.0-2026-02-08-0120
[INFO] [stderr]    Compiling r2u2_core v4.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.14s
[INFO] running `Command { std: "docker" "inspect" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling r2u2_core v4.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/r2u2_core-8b388675dc4abfc5)
[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" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411", kill_on_drop: false }`
[INFO] [stdout] 4137a2399e9fb0e6b3e480d91a8775fedf5165110ac3aaf2f814ac41b94ca411
