[INFO] crate mdbook-generate-summary 0.2.0 is already in cache
[INFO] extracting crate mdbook-generate-summary 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/mdbook-generate-summary/0.2.0
[INFO] extracting crate mdbook-generate-summary 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mdbook-generate-summary/0.2.0
[INFO] validating manifest of mdbook-generate-summary-0.2.0 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 mdbook-generate-summary-0.2.0 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 mdbook-generate-summary-0.2.0
[INFO] finished frobbing mdbook-generate-summary-0.2.0
[INFO] frobbed toml for mdbook-generate-summary-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mdbook-generate-summary/0.2.0/Cargo.toml
[INFO] started frobbing mdbook-generate-summary-0.2.0
[INFO] finished frobbing mdbook-generate-summary-0.2.0
[INFO] frobbed toml for mdbook-generate-summary-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mdbook-generate-summary/0.2.0/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 mdbook-generate-summary-0.2.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mdbook-generate-summary/0.2.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7622c3c23aa80dad94a9bd109e5308b52d508d43d3ac0179bf0ee37ff16d982a
[INFO] running `"docker" "start" "-a" "7622c3c23aa80dad94a9bd109e5308b52d508d43d3ac0179bf0ee37ff16d982a"`
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling mdbook-generate-summary v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `"docker" "inspect" "7622c3c23aa80dad94a9bd109e5308b52d508d43d3ac0179bf0ee37ff16d982a"`
[INFO] running `"docker" "rm" "-f" "7622c3c23aa80dad94a9bd109e5308b52d508d43d3ac0179bf0ee37ff16d982a"`
[INFO] [stdout] 7622c3c23aa80dad94a9bd109e5308b52d508d43d3ac0179bf0ee37ff16d982a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mdbook-generate-summary/0.2.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 20ba6bcc86ad3c88ccd7cf91c7452dbba7dd647b9a3a1d024e690eeccb0e0497
[INFO] running `"docker" "start" "-a" "20ba6bcc86ad3c88ccd7cf91c7452dbba7dd647b9a3a1d024e690eeccb0e0497"`
[INFO] [stderr]    Compiling mdbook-generate-summary v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:17:45
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn generates_summary_md() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `"docker" "inspect" "20ba6bcc86ad3c88ccd7cf91c7452dbba7dd647b9a3a1d024e690eeccb0e0497"`
[INFO] running `"docker" "rm" "-f" "20ba6bcc86ad3c88ccd7cf91c7452dbba7dd647b9a3a1d024e690eeccb0e0497"`
[INFO] [stdout] 20ba6bcc86ad3c88ccd7cf91c7452dbba7dd647b9a3a1d024e690eeccb0e0497
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mdbook-generate-summary/0.2.0:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 47da95488a5c04ca7227a787430f477c67251b04f6bb874178d8e85252822f1e
[INFO] running `"docker" "start" "-a" "47da95488a5c04ca7227a787430f477c67251b04f6bb874178d8e85252822f1e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mdbook_generate_summary-963c639768341326
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test summary_entry::test::indentation_level_with_2_subdir ... ok
[INFO] [stdout] test summary_entry::test::indentation_level_with_1_subdir ... ok
[INFO] [stdout] test summary_entry::test::indentation_level_with_3_subdir ... ok
[INFO] [stdout] test summary_entry::test::ordered ... ok
[INFO] [stdout] test summary_entry::test::indentation_level_with_base_dir_and_readme ... ok
[INFO] [stdout] test summary_entry::test::indentation_level_with_base_dir ... ok
[INFO] [stdout] test summary_entry::test::ordered_2 ... ok
[INFO] [stdout] test summary_entry::test::summary_line_with_1_subdir_readme ... ok
[INFO] [stdout] test summary_entry::test::summary_line_with_no_subdir ... ok
[INFO] [stdout] test summary_entry::test::summary_line_with_1_subdir ... ok
[INFO] [stdout] test test::find_content_returns_no_title_if_none_found ... ok
[INFO] [stdout] test test::find_content_finds_a_title ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cli-05d0be362d35153b
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test generates_summary_md ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "47da95488a5c04ca7227a787430f477c67251b04f6bb874178d8e85252822f1e"`
[INFO] running `"docker" "rm" "-f" "47da95488a5c04ca7227a787430f477c67251b04f6bb874178d8e85252822f1e"`
[INFO] [stdout] 47da95488a5c04ca7227a787430f477c67251b04f6bb874178d8e85252822f1e