[INFO] fetching crate lean-imt 0.1.2...
[INFO] testing lean-imt-0.1.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate lean-imt 0.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate lean-imt 0.1.2
[INFO] finished tweaking crates.io crate lean-imt 0.1.2
[INFO] tweaked toml for crates.io crate lean-imt 0.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lean-imt 0.1.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding hashbrown v0.15.5 (available: v0.16.0)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c245c366746708344c65594849fda1a8c7e8fb930540e350a7fff99dc00603ba
[INFO] running `Command { std: "docker" "start" "-a" "c245c366746708344c65594849fda1a8c7e8fb930540e350a7fff99dc00603ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c245c366746708344c65594849fda1a8c7e8fb930540e350a7fff99dc00603ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c245c366746708344c65594849fda1a8c7e8fb930540e350a7fff99dc00603ba", kill_on_drop: false }`
[INFO] [stdout] c245c366746708344c65594849fda1a8c7e8fb930540e350a7fff99dc00603ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e29af9c5e2848af15c308e1b668683ddee64fbf3ed662ba24e385fbacaa5b89a
[INFO] running `Command { std: "docker" "start" "-a" "e29af9c5e2848af15c308e1b668683ddee64fbf3ed662ba24e385fbacaa5b89a", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling lean-imt v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "e29af9c5e2848af15c308e1b668683ddee64fbf3ed662ba24e385fbacaa5b89a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e29af9c5e2848af15c308e1b668683ddee64fbf3ed662ba24e385fbacaa5b89a", kill_on_drop: false }`
[INFO] [stdout] e29af9c5e2848af15c308e1b668683ddee64fbf3ed662ba24e385fbacaa5b89a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 45c41d29de2d9a2a8608df6287441a5ccd7aa5406092163f1bac63ecd1ac2b77
[INFO] running `Command { std: "docker" "start" "-a" "45c41d29de2d9a2a8608df6287441a5ccd7aa5406092163f1bac63ecd1ac2b77", kill_on_drop: false }`
[INFO] [stderr]    Compiling lean-imt v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "45c41d29de2d9a2a8608df6287441a5ccd7aa5406092163f1bac63ecd1ac2b77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45c41d29de2d9a2a8608df6287441a5ccd7aa5406092163f1bac63ecd1ac2b77", kill_on_drop: false }`
[INFO] [stdout] 45c41d29de2d9a2a8608df6287441a5ccd7aa5406092163f1bac63ecd1ac2b77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7ee69a6ce53f998b70ea35769ce417bea1a7e9dd8525ee627f6a39b3c6135540
[INFO] running `Command { std: "docker" "start" "-a" "7ee69a6ce53f998b70ea35769ce417bea1a7e9dd8525ee627f6a39b3c6135540", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lean_imt-f94e56031a3906e7)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test tests::test_insert ... ok
[INFO] [stdout] test tests::test_has_and_index_of ... ok
[INFO] [stdout] test tests::test_insert_after_tree_becomes_empty ... ok
[INFO] [stdout] test tests::test_insert_ ... ok
[INFO] [stdout] test tests::test_insert_duplicate_leaf ... ok
[INFO] [stdout] test tests::test_insert_many ... ok
[INFO] [stdout] test tests::test_insertion_after_removal ... ok
[INFO] [stdout] test tests::test_insert_many_with_duplicate_leaf ... ok
[INFO] [stdout] test tests::test_insertion_causes_depth_increase ... ok
[INFO] [stdout] test tests::test_invalid_sibling_nodes_on_remove ... ok
[INFO] [stdout] test tests::test_invalid_sibling_nodes_on_update ... ok
[INFO] [stdout] test tests::test_new_lean_imt ... ok
[INFO] [stdout] test tests::test_remove_nonexistent_leaf ... ok
[INFO] [stdout] test tests::test_remove ... ok
[INFO] [stdout] test tests::test_root_after_operations ... ok
[INFO] [stdout] test tests::test_tree_after_all_leaves_removed ... ok
[INFO] [stdout] test tests::test_update ... ok
[INFO] [stdout] test tests::test_large_number_of_leaves ... ok
[INFO] [stdout] test tests::test_update_nonexistent_leaf ... ok
[INFO] [stdout] test tests::test_tree_consistency ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lean_imt
[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" "7ee69a6ce53f998b70ea35769ce417bea1a7e9dd8525ee627f6a39b3c6135540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee69a6ce53f998b70ea35769ce417bea1a7e9dd8525ee627f6a39b3c6135540", kill_on_drop: false }`
[INFO] [stdout] 7ee69a6ce53f998b70ea35769ce417bea1a7e9dd8525ee627f6a39b3c6135540