[INFO] updating cached repository rust-lang-ja/rust-by-example-ja
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rust-lang-ja/rust-by-example-ja
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rust-lang-ja/rust-by-example-ja" "work/ex/beta-1.38-1/sources/1.37.0/gh/rust-lang-ja/rust-by-example-ja"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rust-lang-ja/rust-by-example-ja'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rust-lang-ja/rust-by-example-ja" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rust-lang-ja/rust-by-example-ja"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rust-lang-ja/rust-by-example-ja'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e2b18c72aa14dc978e3f3a849bc46f6448b9c9fd
[INFO] sha for GitHub repo rust-lang-ja/rust-by-example-ja: e2b18c72aa14dc978e3f3a849bc46f6448b9c9fd
[INFO] validating manifest of rust-lang-ja/rust-by-example-ja 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 rust-lang-ja/rust-by-example-ja 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 rust-lang-ja/rust-by-example-ja
[INFO] finished frobbing rust-lang-ja/rust-by-example-ja
[INFO] frobbed toml for rust-lang-ja/rust-by-example-ja written to work/ex/beta-1.38-1/sources/1.37.0/gh/rust-lang-ja/rust-by-example-ja/Cargo.toml
[INFO] started frobbing rust-lang-ja/rust-by-example-ja
[INFO] finished frobbing rust-lang-ja/rust-by-example-ja
[INFO] frobbed toml for rust-lang-ja/rust-by-example-ja written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rust-lang-ja/rust-by-example-ja/Cargo.toml
[INFO] crate rust-lang-ja/rust-by-example-ja already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rust-lang-ja/rust-by-example-ja/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 rust-lang-ja/rust-by-example-ja 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rust-lang-ja/rust-by-example-ja:/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] 0607bfc0b444f1d0abd5813602cba18292ef6771c68823d830fd79fb127389ee
[INFO] running `"docker" "start" "-a" "0607bfc0b444f1d0abd5813602cba18292ef6771c68823d830fd79fb127389ee"`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.11
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling regex v1.2.1
[INFO] [stderr]    Compiling update v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `at` found for type `regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/markdown.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 |                     let src = captures.at(1).unwrap();
[INFO] [stderr]    |                                        ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for type `regex::Captures<'_>` in the current scope
[INFO] [stderr]    --> src/markdown.rs:105:40
[INFO] [stderr]     |
[INFO] [stderr] 105 |                     let src = captures.at(1).unwrap();
[INFO] [stderr]     |                                        ^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for type `regex::Captures<'_>` in the current scope
[INFO] [stderr]    --> src/markdown.rs:144:44
[INFO] [stderr]     |
[INFO] [stderr] 144 |                     let srcbase = captures.at(1).unwrap();
[INFO] [stderr]     |                                            ^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `update`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0607bfc0b444f1d0abd5813602cba18292ef6771c68823d830fd79fb127389ee"`
[INFO] running `"docker" "rm" "-f" "0607bfc0b444f1d0abd5813602cba18292ef6771c68823d830fd79fb127389ee"`
[INFO] [stdout] 0607bfc0b444f1d0abd5813602cba18292ef6771c68823d830fd79fb127389ee