[INFO] crate starling 3.1.0 is already in cache
[INFO] extracting crate starling 3.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/starling/3.1.0
[INFO] extracting crate starling 3.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/starling/3.1.0
[INFO] validating manifest of starling-3.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of starling-3.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing starling-3.1.0
[INFO] finished frobbing starling-3.1.0
[INFO] frobbed toml for starling-3.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/starling/3.1.0/Cargo.toml
[INFO] started frobbing starling-3.1.0
[INFO] finished frobbing starling-3.1.0
[INFO] frobbed toml for starling-3.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/starling/3.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing starling-3.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/starling/3.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f20536bccbc011dc8e739e9c992356348fc7556dcb714db2da0d4faf9d65bec4
[INFO] running `"docker" "start" "-a" "f20536bccbc011dc8e739e9c992356348fc7556dcb714db2da0d4faf9d65bec4"`
[INFO] [stderr]    Compiling starling v3.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `"docker" "inspect" "f20536bccbc011dc8e739e9c992356348fc7556dcb714db2da0d4faf9d65bec4"`
[INFO] running `"docker" "rm" "-f" "f20536bccbc011dc8e739e9c992356348fc7556dcb714db2da0d4faf9d65bec4"`
[INFO] [stdout] f20536bccbc011dc8e739e9c992356348fc7556dcb714db2da0d4faf9d65bec4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/starling/3.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 42b8fea8707b3647445ef77a683ae3f3cd6450843df6ba543b8b541df4373958
[INFO] running `"docker" "start" "-a" "42b8fea8707b3647445ef77a683ae3f3cd6450843df6ba543b8b541df4373958"`
[INFO] [stderr]    Compiling starling v3.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.97s
[INFO] running `"docker" "inspect" "42b8fea8707b3647445ef77a683ae3f3cd6450843df6ba543b8b541df4373958"`
[INFO] running `"docker" "rm" "-f" "42b8fea8707b3647445ef77a683ae3f3cd6450843df6ba543b8b541df4373958"`
[INFO] [stdout] 42b8fea8707b3647445ef77a683ae3f3cd6450843df6ba543b8b541df4373958
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/starling/3.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 1f21ef1959376df437e60b7b8ce381d6bca87d29faabd1313a19e8ee8ad6fc58
[INFO] running `"docker" "start" "-a" "1f21ef1959376df437e60b7b8ce381d6bca87d29faabd1313a19e8ee8ad6fc58"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/starling-b1535f25e7e71df0
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test merkle_bit::tests::it_splits_an_odd_length_sorted_list_of_pairs_with_more_zeros ... ok
[INFO] [stdout] test merkle_bit::tests::it_splits_an_odd_length_sorted_list_of_pairs_with_more_ones ... ok
[INFO] [stdout] test merkle_bit::tests::it_splits_an_even_length_sorted_list_of_pairs ... ok
[INFO] [stdout] test merkle_bit::tests::it_splits_an_all_zeros_sorted_list_of_pairs ... ok
[INFO] [stdout] test merkle_bit::tests::it_splits_an_all_ones_sorted_list_of_pairs ... ok
[INFO] [stdout] test merkle_bit::tests::it_chooses_the_right_branch_easy ... ok
[INFO] [stdout] test merkle_bit::tests::it_chooses_the_right_branch_hard ... ok
[INFO] [stdout] test merkle_bit::tests::it_chooses_the_right_branch_medium ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/merkle_bit-94841c11e1f835b2
[INFO] [stdout] 
[INFO] [stdout] running 80 tests
[INFO] [stdout] test integration_tests::it_fails_to_get_from_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_fails_to_get_a_nonexistent_item ... ok
[INFO] [stdout] test integration_tests::it_fails_an_invalid_simple_proof ... ok
[INFO] [stdout] test integration_tests::it_does_not_panic_when_removing_a_nonexistent_node ... ok
[INFO] [stdout] test integration_tests::it_gets_an_item_out_of_a_simple_tree ... ok
[INFO] [stdout] test integration_tests::it_correctly_increments_a_leaf_reference_count ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_complex_tree ... ok
[INFO] [stdout] test integration_tests::it_generates_a_simple_inclusion_proof ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_medium_unbalanced_tree ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_small_balanced_tree ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_medium_balanced_tree ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_tree_of_16 ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_small_unbalanced_tree ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_tree_of_24 ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_tree_of_25 ... ok
[INFO] [stdout] test integration_tests::it_gets_one_key_from_a_small_tree ... ok
[INFO] [stdout] test integration_tests::it_generates_a_medium_size_inclusion_proof ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_eight ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_eleven ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_eighteen ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_five ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_four ... ok
[INFO] [stdout] test integration_tests::it_gets_one_key_from_a_large_tree ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_nine ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_fifteen ... ok
[INFO] [stdout] test integration_tests::it_generates_a_large_size_inclusion_proof ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_large_unbalanced_tree ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_seven ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_six ... ok
[INFO] [stdout] test integration_tests::it_gets_items_from_a_large_balanced_tree ... ok
[INFO] [stdout] test integration_tests::it_fails_a_large_size_invalid_proof ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_fourteen ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_ten ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_sixteen ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_three ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_seventeen ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_nineteen ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_thirteen ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_thirty_one ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twelve ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_thirty ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_eight ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_thirty_two ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_four ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_five ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_two ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_nine ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_one ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_leaf_node_into_a_tree_with_one_item ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_leaf_node_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_seven ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_medium_even_amount_of_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_small_even_amount_of_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_small_odd_amount_of_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_multiple_leaf_nodes_into_a_small_tree_with_existing_items ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_medium_odd_amount_of_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_multiple_leaf_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_six ... ok
[INFO] [stdout] test integration_tests::it_inserts_one_into_an_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_two_leaf_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_two_leaf_nodes_into_empty_tree_with_first_bit_split ... ok
[INFO] [stdout] test integration_tests::it_inserts_with_compressed_nodes_that_are_descendants ... ok
[INFO] [stdout] test integration_tests::it_inserts_with_compressed_nodes_that_are_not_descendants ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_three ... ok
[INFO] [stdout] test integration_tests::it_removes_a_node ... ok
[INFO] [stdout] test integration_tests::it_removes_a_small_old_tree ... ok
[INFO] [stdout] test integration_tests::it_handles_key_size_of_twenty_two ... ok
[INFO] [stdout] test integration_tests::it_removes_an_old_large_root ... ok
[INFO] [stdout] test integration_tests::it_removes_an_old_root ... ok
[INFO] [stdout] test integration_tests::it_returns_the_same_number_of_values_as_keys ... ok
[INFO] [stdout] test integration_tests::it_updates_an_existing_entry ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_large_even_amount_of_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_one_into_a_large_tree ... ok
[INFO] [stdout] test integration_tests::it_inserts_a_large_odd_amount_of_nodes_into_empty_tree ... ok
[INFO] [stdout] test integration_tests::it_removes_an_entire_tree ... ok
[INFO] [stdout] test integration_tests::it_updates_multiple_existing_entries ... ok
[INFO] [stdout] test integration_tests::it_inserts_multiple_leaf_nodes_into_a_tree_with_existing_items ... ok
[INFO] [stdout] test integration_tests::it_correctly_iterates_removals ... ok
[INFO] [stdout] test integration_tests::it_iterates_over_multiple_inserts_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 80 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests starling
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1f21ef1959376df437e60b7b8ce381d6bca87d29faabd1313a19e8ee8ad6fc58"`
[INFO] running `"docker" "rm" "-f" "1f21ef1959376df437e60b7b8ce381d6bca87d29faabd1313a19e8ee8ad6fc58"`
[INFO] [stdout] 1f21ef1959376df437e60b7b8ce381d6bca87d29faabd1313a19e8ee8ad6fc58