[INFO] crate mdbook-api 0.4.0 is already in cache
[INFO] extracting crate mdbook-api 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/mdbook-api/0.4.0
[INFO] extracting crate mdbook-api 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mdbook-api/0.4.0
[INFO] validating manifest of mdbook-api-0.4.0 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 mdbook-api-0.4.0 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 mdbook-api-0.4.0
[INFO] finished frobbing mdbook-api-0.4.0
[INFO] frobbed toml for mdbook-api-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/mdbook-api/0.4.0/Cargo.toml
[INFO] started frobbing mdbook-api-0.4.0
[INFO] finished frobbing mdbook-api-0.4.0
[INFO] frobbed toml for mdbook-api-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mdbook-api/0.4.0/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 mdbook-api-0.4.0 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-0/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/mdbook-api/0.4.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ecc7813faed752b93b672d0a61baf8cf61e59a1526fa653560f224491646f9d5
[INFO] running `"docker" "start" "-a" "ecc7813faed752b93b672d0a61baf8cf61e59a1526fa653560f224491646f9d5"`
[INFO] [stderr]    Compiling ws v0.7.9
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.6
[INFO] [stderr]    Compiling toml-query v0.7.0
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]    Compiling iron v0.6.0
[INFO] [stderr]    Compiling mount v0.4.0
[INFO] [stderr]    Compiling staticfile v0.5.0
[INFO] [stderr]    Compiling ammonia v1.2.0
[INFO] [stderr]    Compiling mdbook v0.2.3
[INFO] [stderr]    Compiling mdbook-api v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.77s
[INFO] running `"docker" "inspect" "ecc7813faed752b93b672d0a61baf8cf61e59a1526fa653560f224491646f9d5"`
[INFO] running `"docker" "rm" "-f" "ecc7813faed752b93b672d0a61baf8cf61e59a1526fa653560f224491646f9d5"`
[INFO] [stdout] ecc7813faed752b93b672d0a61baf8cf61e59a1526fa653560f224491646f9d5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/mdbook-api/0.4.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4c39b8a1a87cd81e35fe037b55075ab8a4ee409e64d356157565aa3bee5e7fc3
[INFO] running `"docker" "start" "-a" "4c39b8a1a87cd81e35fe037b55075ab8a4ee409e64d356157565aa3bee5e7fc3"`
[INFO] [stderr]    Compiling mdbook-api v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]   --> tests/cli.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde::{Serialize, Deserialize};
[INFO] [stderr]    |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.20s
[INFO] running `"docker" "inspect" "4c39b8a1a87cd81e35fe037b55075ab8a4ee409e64d356157565aa3bee5e7fc3"`
[INFO] running `"docker" "rm" "-f" "4c39b8a1a87cd81e35fe037b55075ab8a4ee409e64d356157565aa3bee5e7fc3"`
[INFO] [stdout] 4c39b8a1a87cd81e35fe037b55075ab8a4ee409e64d356157565aa3bee5e7fc3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/mdbook-api/0.4.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] a90f24ac48195c113a87a1407b428c50051845661756f479d7a262a421b1ee7f
[INFO] running `"docker" "start" "-a" "a90f24ac48195c113a87a1407b428c50051845661756f479d7a262a421b1ee7f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mdbook_api-efe526c079d47527
[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] [stderr]      Running /opt/crater/target/debug/deps/mdbook_api-948e4089c5663117
[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] [stderr]      Running /opt/crater/target/debug/deps/cli-17694abeddac7fe5
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test book_contents ... ok
[INFO] [stdout] test book_json ... ok
[INFO] [stdout] test markdown_json ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mdbook-api
[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" "a90f24ac48195c113a87a1407b428c50051845661756f479d7a262a421b1ee7f"`
[INFO] running `"docker" "rm" "-f" "a90f24ac48195c113a87a1407b428c50051845661756f479d7a262a421b1ee7f"`
[INFO] [stdout] a90f24ac48195c113a87a1407b428c50051845661756f479d7a262a421b1ee7f