[INFO] crate monilog 0.1.1 is already in cache
[INFO] extracting crate monilog 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/monilog/0.1.1
[INFO] extracting crate monilog 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/monilog/0.1.1
[INFO] validating manifest of monilog-0.1.1 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 monilog-0.1.1 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 monilog-0.1.1
[INFO] finished frobbing monilog-0.1.1
[INFO] frobbed toml for monilog-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/monilog/0.1.1/Cargo.toml
[INFO] started frobbing monilog-0.1.1
[INFO] finished frobbing monilog-0.1.1
[INFO] frobbed toml for monilog-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/monilog/0.1.1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing monilog-0.1.1 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/monilog/0.1.1:/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] 394880d5ada3c6e86a83b7156e54693a5a3f1ab5353de555594defd92357ad34
[INFO] running `"docker" "start" "-a" "394880d5ada3c6e86a83b7156e54693a5a3f1ab5353de555594defd92357ad34"`
[INFO] [stderr]    Compiling monilog v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `at` found for type `&regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/main.rs:93:48
[INFO] [stderr]    |
[INFO] [stderr] 93 |                         print!("{} ", 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/main.rs:95:40
[INFO] [stderr]    |
[INFO] [stderr] 95 |                         match captures.at(2).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/main.rs:105:48
[INFO] [stderr]     |
[INFO] [stderr] 105 |                         print!("{} ", captures.at(2).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/main.rs:106:49
[INFO] [stderr]     |
[INFO] [stderr] 106 |                         print!("{}\n", captures.at(3).unwrap());
[INFO] [stderr]     |                                                 ^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `monilog`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "394880d5ada3c6e86a83b7156e54693a5a3f1ab5353de555594defd92357ad34"`
[INFO] running `"docker" "rm" "-f" "394880d5ada3c6e86a83b7156e54693a5a3f1ab5353de555594defd92357ad34"`
[INFO] [stdout] 394880d5ada3c6e86a83b7156e54693a5a3f1ab5353de555594defd92357ad34