[INFO] fetching crate elasticlunr-rs 2.3.6...
[INFO] extracting crate elasticlunr-rs 2.3.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/elasticlunr-rs/2.3.6
[INFO] extracting crate elasticlunr-rs 2.3.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elasticlunr-rs/2.3.6
[INFO] validating manifest of elasticlunr-rs-2.3.6 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of elasticlunr-rs-2.3.6 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing elasticlunr-rs-2.3.6
[INFO] finished frobbing elasticlunr-rs-2.3.6
[INFO] frobbed toml for elasticlunr-rs-2.3.6 written to work/ex/beta-1.37-6/sources/1.36.0/reg/elasticlunr-rs/2.3.6/Cargo.toml
[INFO] started frobbing elasticlunr-rs-2.3.6
[INFO] finished frobbing elasticlunr-rs-2.3.6
[INFO] frobbed toml for elasticlunr-rs-2.3.6 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elasticlunr-rs/2.3.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing elasticlunr-rs-2.3.6 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elasticlunr-rs/2.3.6:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 849021348d793c8f16dd41e9b24d97e4bfd7618679069b598e5172107467a524
[INFO] running `"docker" "start" "-a" "849021348d793c8f16dd41e9b24d97e4bfd7618679069b598e5172107467a524"`
[INFO] [stderr]    Compiling rust-stemmers v1.1.0
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.6 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.90s
[INFO] running `"docker" "inspect" "849021348d793c8f16dd41e9b24d97e4bfd7618679069b598e5172107467a524"`
[INFO] running `"docker" "rm" "-f" "849021348d793c8f16dd41e9b24d97e4bfd7618679069b598e5172107467a524"`
[INFO] [stdout] 849021348d793c8f16dd41e9b24d97e4bfd7618679069b598e5172107467a524
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elasticlunr-rs/2.3.6:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3d981271b7f6d83e5fc105255d23562405e8c0b23cdf43b03c5b7d2336d176ff
[INFO] running `"docker" "start" "-a" "3d981271b7f6d83e5fc105255d23562405e8c0b23cdf43b03c5b7d2336d176ff"`
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.6 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.14s
[INFO] running `"docker" "inspect" "3d981271b7f6d83e5fc105255d23562405e8c0b23cdf43b03c5b7d2336d176ff"`
[INFO] running `"docker" "rm" "-f" "3d981271b7f6d83e5fc105255d23562405e8c0b23cdf43b03c5b7d2336d176ff"`
[INFO] [stdout] 3d981271b7f6d83e5fc105255d23562405e8c0b23cdf43b03c5b7d2336d176ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elasticlunr-rs/2.3.6:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] c0411e8bf046287a4dcdc9f5054a68257f2e210cf7d6f3ab7aedfb4501e5e09f
[INFO] running `"docker" "start" "-a" "c0411e8bf046287a4dcdc9f5054a68257f2e210cf7d6f3ab7aedfb4501e5e09f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/elasticlunr-fa3b7024eb255a93
[INFO] [stdout] 
[INFO] [stdout] running 48 tests
[INFO] [stdout] test document_store::tests::add_doc_tokens ... ok
[INFO] [stdout] test document_store::tests::add_doc_no_store ... ok
[INFO] [stdout] test document_store::tests::add_field_len ... ok
[INFO] [stdout] test document_store::tests::create_doc_no_store ... ok
[INFO] [stdout] test document_store::tests::get_doc_many_fields ... ok
[INFO] [stdout] test document_store::tests::check_store_has_key ... ok
[INFO] [stdout] test document_store::tests::get_doc ... ok
[INFO] [stdout] test document_store::tests::add_field_length_multiple ... ok
[INFO] [stdout] test document_store::tests::get_doc_no_store ... ok
[INFO] [stdout] test document_store::tests::get_nonexistant_doc ... ok
[INFO] [stdout] test document_store::tests::get_nonexistant_doc_no_store ... ok
[INFO] [stdout] test document_store::tests::get_num_docs ... ok
[INFO] [stdout] test document_store::tests::is_stored_false ... ok
[INFO] [stdout] test document_store::tests::is_stored_true ... ok
[INFO] [stdout] test document_store::tests::remove_doc ... ok
[INFO] [stdout] test document_store::tests::remove_nonexistant_store ... ok
[INFO] [stdout] test document_store::tests::remove_doc_no_store ... ok
[INFO] [stdout] test document_store::tests::remove_nonexistant_doc ... ok
[INFO] [stdout] test inverted_index::tests::adding_token ... ok
[INFO] [stdout] test inverted_index::tests::adding_existing_doc ... ok
[INFO] [stdout] test config::tests::test_normal_config ... ok
[INFO] [stdout] test config::tests::test_complex_config ... ok
[INFO] [stdout] test inverted_index::tests::checking_token_exists_in ... ok
[INFO] [stdout] test inverted_index::tests::df_of_nonexistant_token ... ok
[INFO] [stdout] test inverted_index::tests::get_term_frequency_nonexistant_docref ... ok
[INFO] [stdout] test inverted_index::tests::checking_if_a_token_does_not_exist ... ok
[INFO] [stdout] test inverted_index::tests::adding_another_document_to_the_token ... ok
[INFO] [stdout] test inverted_index::tests::get_term_frequency_nonexistant_token ... ok
[INFO] [stdout] test inverted_index::tests::get_term_frequency_nonexistant_token_and_docref ... ok
[INFO] [stdout] test inverted_index::tests::get_term_frequency ... ok
[INFO] [stdout] test inverted_index::tests::df_of_items ... ok
[INFO] [stdout] test inverted_index::tests::has_token ... ok
[INFO] [stdout] test lang::en::tests::hyphens ... ok
[INFO] [stdout] test inverted_index::tests::retrieving_nonexistant_items ... ok
[INFO] [stdout] test lang::en::tests::multiple_white_space ... ok
[INFO] [stdout] test lang::en::tests::removing_punctuation ... ok
[INFO] [stdout] test lang::en::tests::latin_characters ... ok
[INFO] [stdout] test inverted_index::tests::removing_document_from_token ... ok
[INFO] [stdout] test inverted_index::tests::retrieving_items ... ok
[INFO] [stdout] test lang::en::tests::split_simple_strings ... ok
[INFO] [stdout] test lang::en::tests::splitting_strings_with_hyphens ... ok
[INFO] [stdout] test tests::add_field_to_builder ... ok
[INFO] [stdout] test inverted_index::tests::removing_documet_nonexistant_key ... ok
[INFO] [stdout] test inverted_index::tests::removing_nonexistant_document ... ok
[INFO] [stdout] test tests::adding_document_to_index ... ok
[INFO] [stdout] test tests::adding_document_with_empty_field ... ok
[INFO] [stdout] test lang::en::tests::test_stemmer ... ok
[INFO] [stdout] test tests::creating_index_with_identical_fields_panics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 48 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_compare-1e4e4172502297ec
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test search_index_hasnt_changed_accidentally ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_lang-f716e83d8f9d6be5
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_languages ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests elasticlunr
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - Index::with_language (line 197) ... ok
[INFO] [stdout] test src/lib.rs -  (line 16) ... FAILED
[INFO] [stdout] test src/lib.rs - IndexBuilder (line 66) ... ok
[INFO] [stdout] test src/lib.rs - Index::new (line 175) ... ok
[INFO] [stdout] test src/lib.rs - Index::add_doc (line 238) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 16) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:999:5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55d2658a348b - backtrace::backtrace::libunwind::trace::h5dfa5d4c5feed6dc
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stdout]    1:     0x55d2658a348b - backtrace::backtrace::trace_unsynchronized::hb731fe64f3fa469f
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55d2658a348b - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stdout]    3:     0x55d2658a348b - std::sys_common::backtrace::print::h31646c3786c57441
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stdout]    4:     0x55d2658a348b - std::panicking::default_hook::{{closure}}::hda785e768c746ae7
[INFO] [stdout]                                at src/libstd/panicking.rs:200
[INFO] [stdout]    5:     0x55d2658a3167 - std::panicking::default_hook::h0c4b76f338614ef1
[INFO] [stdout]                                at src/libstd/panicking.rs:214
[INFO] [stdout]    6:     0x55d2658a3ba0 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce
[INFO] [stdout]                                at src/libstd/panicking.rs:477
[INFO] [stdout]    7:     0x55d2658a3722 - std::panicking::continue_panic_fmt::h0046167652be99a6
[INFO] [stdout]                                at src/libstd/panicking.rs:384
[INFO] [stdout]    8:     0x55d2658a3606 - rust_begin_unwind
[INFO] [stdout]                                at src/libstd/panicking.rs:311
[INFO] [stdout]    9:     0x55d2658b927d - core::panicking::panic_fmt::h8980489a6c4a44cb
[INFO] [stdout]                                at src/libcore/panicking.rs:85
[INFO] [stdout]   10:     0x55d26554d588 - core::result::unwrap_failed::h2efcb8a2dbf695a5
[INFO] [stdout]   11:     0x55d26554da40 - core::result::Result<T,E>::unwrap::hf30d1568bf5a3153
[INFO] [stdout]   12:     0x55d2655489cf - rust_out::main::h1cf9155cb6204ee7
[INFO] [stdout]   13:     0x55d26554fe63 - std::rt::lang_start::{{closure}}::hcae6cf720578140e
[INFO] [stdout]   14:     0x55d2658a35a3 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418
[INFO] [stdout]                                at src/libstd/rt.rs:49
[INFO] [stdout]   15:     0x55d2658a35a3 - std::panicking::try::do_call::h480cafa68c9928b4
[INFO] [stdout]                                at src/libstd/panicking.rs:296
[INFO] [stdout]   16:     0x55d2658a56ea - __rust_maybe_catch_panic
[INFO] [stdout]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stdout]   17:     0x55d2658a40ad - std::panicking::try::he0549d0299de204a
[INFO] [stdout]                                at src/libstd/panicking.rs:275
[INFO] [stdout]   18:     0x55d2658a40ad - std::panic::catch_unwind::h422dc2db98f03517
[INFO] [stdout]                                at src/libstd/panic.rs:394
[INFO] [stdout]   19:     0x55d2658a40ad - std::rt::lang_start_internal::h121de03325a3f900
[INFO] [stdout]                                at src/libstd/rt.rs:48
[INFO] [stdout]   20:     0x55d26554fe45 - std::rt::lang_start::hf87e2ef1856a065b
[INFO] [stdout]   21:     0x55d265548afb - main
[INFO] [stdout]   22:     0x7f0af11572e1 - __libc_start_main
[INFO] [stdout]   23:     0x55d26553a7da - _start
[INFO] [stdout]   24:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 16)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "c0411e8bf046287a4dcdc9f5054a68257f2e210cf7d6f3ab7aedfb4501e5e09f"`
[INFO] running `"docker" "rm" "-f" "c0411e8bf046287a4dcdc9f5054a68257f2e210cf7d6f3ab7aedfb4501e5e09f"`
[INFO] [stdout] c0411e8bf046287a4dcdc9f5054a68257f2e210cf7d6f3ab7aedfb4501e5e09f