[INFO] fetching crate t4 0.1.6...
[INFO] testing t4-0.1.6 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate t4 0.1.6 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate t4 0.1.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate t4 0.1.6
[INFO] tweaked toml for crates.io crate t4 0.1.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate t4 0.1.6 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate t4 0.1.6 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded verus_state_machines_macros v0.0.0-2026-04-20-1748
[INFO] [stderr]   Downloaded assoc v0.1.3
[INFO] [stderr]   Downloaded verus_builtin v0.0.0-2026-04-12-0118
[INFO] [stderr]   Downloaded t4-verified v0.1.6
[INFO] [stderr]   Downloaded const-siphasher v1.0.2
[INFO] [stderr]   Downloaded verus_prettyplease v0.0.0-2026-04-12-0118
[INFO] [stderr]   Downloaded corosensei v0.3.3
[INFO] [stderr]   Downloaded verus_builtin_macros v0.0.0-2026-04-20-1748
[INFO] [stderr]   Downloaded io-uring v0.7.12
[INFO] [stderr]   Downloaded shuttle v0.9.1
[INFO] [stderr]   Downloaded vstd v0.0.0-2026-04-20-1748
[INFO] [stderr]   Downloaded verus_syn v0.0.0-2026-04-05-0114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 144ce40ed682092ba01ed6ef3040a29596240ee9a42e5fae6e449b7b5f613dc6
[INFO] running `Command { std: "docker" "start" "-a" "144ce40ed682092ba01ed6ef3040a29596240ee9a42e5fae6e449b7b5f613dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "144ce40ed682092ba01ed6ef3040a29596240ee9a42e5fae6e449b7b5f613dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "144ce40ed682092ba01ed6ef3040a29596240ee9a42e5fae6e449b7b5f613dc6", kill_on_drop: false }`
[INFO] [stdout] 144ce40ed682092ba01ed6ef3040a29596240ee9a42e5fae6e449b7b5f613dc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99a4878ce0231770b344981dce9f8cbf14d3c15de404f56fe5eaf66d1bb41202
[INFO] running `Command { std: "docker" "start" "-a" "99a4878ce0231770b344981dce9f8cbf14d3c15de404f56fe5eaf66d1bb41202", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling verus_prettyplease v0.0.0-2026-04-12-0118
[INFO] [stderr]    Compiling vstd v0.0.0-2026-04-20-1748
[INFO] [stderr]    Compiling verus_builtin v0.0.0-2026-04-12-0118
[INFO] [stderr]    Compiling io-uring v0.7.12
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling verus_syn v0.0.0-2026-04-05-0114
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling verus_builtin_macros v0.0.0-2026-04-20-1748
[INFO] [stderr]    Compiling verus_state_machines_macros v0.0.0-2026-04-20-1748
[INFO] [stderr]    Compiling t4-verified v0.1.6
[INFO] [stderr]    Compiling t4 v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.68s
[INFO] running `Command { std: "docker" "inspect" "99a4878ce0231770b344981dce9f8cbf14d3c15de404f56fe5eaf66d1bb41202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99a4878ce0231770b344981dce9f8cbf14d3c15de404f56fe5eaf66d1bb41202", kill_on_drop: false }`
[INFO] [stdout] 99a4878ce0231770b344981dce9f8cbf14d3c15de404f56fe5eaf66d1bb41202
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8162fac5246d9657c228c0437fe605a4795dbc0713a98b9301879cbd0baee79
[INFO] running `Command { std: "docker" "start" "-a" "c8162fac5246d9657c228c0437fe605a4795dbc0713a98b9301879cbd0baee79", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling io-uring v0.7.12
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling pollster v0.4.0
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling t4 v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.35s
[INFO] running `Command { std: "docker" "inspect" "c8162fac5246d9657c228c0437fe605a4795dbc0713a98b9301879cbd0baee79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8162fac5246d9657c228c0437fe605a4795dbc0713a98b9301879cbd0baee79", kill_on_drop: false }`
[INFO] [stdout] c8162fac5246d9657c228c0437fe605a4795dbc0713a98b9301879cbd0baee79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 26a0afb4852e621edc56d547579e70d12b677c8f81709fbb469a2208f34ba23f
[INFO] running `Command { std: "docker" "start" "-a" "26a0afb4852e621edc56d547579e70d12b677c8f81709fbb469a2208f34ba23f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/t4-f0eff8e41b6f0fff)
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[INFO] [stdout] test art::index::tests::delete_allows_reinsert_after_pruning_empty_nodes ... ok
[INFO] [stdout] test art::index::tests::delete_distinguishes_prefix_keys ... ok
[INFO] [stdout] test art::index::tests::delete_removes_single_key ... ok
[INFO] [stdout] test art::index::tests::delete_handles_shared_long_prefix ... ok
[INFO] [stdout] test art::index::tests::delete_works_after_node_growth ... ok
[INFO] [stdout] test art::index::tests::insert_and_get_single_key ... ok
[INFO] [stdout] test art::index::tests::insert_accepts_explicit_terminator ... ok
[INFO] [stdout] test art::index::tests::insert_distinguishes_prefix_keys ... ok
[INFO] [stdout] test art::index::tests::insert_grows_past_node48 ... ok
[INFO] [stdout] test art::index::tests::insert_grows_past_node4_and_node16 ... ok
[INFO] [stdout] test art::index::tests::insert_handles_shared_long_prefix ... ok
[INFO] [stdout] test art::index::tests::delete_missing_key_keeps_existing_values ... ok
[INFO] [stdout] test art::index::tests::insert_handles_shared_prefix_longer_than_eight_bytes ... ok
[INFO] [stdout] test art::index::tests::insert_replace_returns_old_value ... ok
[INFO] [stdout] test art::meta::tests::new_meta_starts_with_empty_prefix ... ok
[INFO] [stdout] test art::meta::tests::set_prefix_stores_full_prefix_when_it_fits ... ok
[INFO] [stdout] test art::n16::tests::insert_keeps_keys_sorted ... ok
[INFO] [stdout] test art::n16::tests::remove_deletes_child_and_keeps_keys_sorted ... ok
[INFO] [stdout] test art::n16::tests::insert_replaces_existing_child ... ok
[INFO] [stdout] test art::n256::tests::insert_replaces_existing_child ... ok
[INFO] [stdout] test art::n256::tests::insert_and_get_direct_slots ... ok
[INFO] [stdout] test art::n48::tests::insert_and_get_sparse_keys ... ok
[INFO] [stdout] test art::n48::tests::insert_replaces_existing_child ... ok
[INFO] [stdout] test art::n256::tests::remove_deletes_direct_slot ... ok
[INFO] [stdout] test art::index::tests::long_prefix_mismatch_returns_none ... ok
[INFO] [stdout] test art::n48::tests::remove_deletes_sparse_child ... ok
[INFO] [stdout] test art::n4::tests::remove_deletes_child_and_keeps_keys_sorted ... ok
[INFO] [stdout] test art::version_lock::tests::optimistic_read_restarts_after_obsolete_unlock ... ok
[INFO] [stdout] test art::version_lock::tests::optimistic_read_restarts_while_locked ... ok
[INFO] [stdout] test art::n4::tests::insert_replaces_existing_child ... ok
[INFO] [stdout] test art::version_lock::tests::optimistic_read_returns_value_when_version_is_stable ... ok
[INFO] [stdout] test art::version_lock::tests::write_guard_mutates_value_and_unlocks ... ok
[INFO] [stdout] test art::version_lock::tests::write_guard_unlock_obsolete_marks_lock_obsolete ... ok
[INFO] [stdout] test wal::tests::page_overflow_detection ... ok
[INFO] [stdout] test wal::tests::page_round_trip ... ok
[INFO] [stdout] test art::version_lock::tests::write_lock_drop_clears_lock_and_bumps_version ... ok
[INFO] [stdout] test art::n4::tests::insert_keeps_keys_sorted ... ok
[INFO] [stdout] test art::version_lock::tests::concurrent_writers_can_both_make_progress ... ok
[INFO] [stdout] test art::meta::tests::set_prefix_rejects_prefixes_longer_than_eight_bytes - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests t4
[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" "26a0afb4852e621edc56d547579e70d12b677c8f81709fbb469a2208f34ba23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a0afb4852e621edc56d547579e70d12b677c8f81709fbb469a2208f34ba23f", kill_on_drop: false }`
[INFO] [stdout] 26a0afb4852e621edc56d547579e70d12b677c8f81709fbb469a2208f34ba23f
