[INFO] fetching crate monilog 0.1.1...
[INFO] testing monilog-0.1.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate monilog 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate monilog 0.1.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate monilog 0.1.1
[INFO] finished tweaking crates.io crate monilog 0.1.1
[INFO] tweaked toml for crates.io crate monilog 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0615bec5433d547889d18519062c40715fc62f2b89b6531eae19e40110c1a066
[INFO] running `"docker" "start" "-a" "0615bec5433d547889d18519062c40715fc62f2b89b6531eae19e40110c1a066"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling monilog v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `at` found for reference `&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]    |                                                ^^ method not found in `&regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for reference `&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]    |                                        ^^ method not found in `&regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for reference `&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]     |                                                ^^ method not found in `&regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for reference `&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]     |                                                 ^^ method not found in `&regex::Captures<'_>`
[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" "0615bec5433d547889d18519062c40715fc62f2b89b6531eae19e40110c1a066"`
[INFO] running `"docker" "rm" "-f" "0615bec5433d547889d18519062c40715fc62f2b89b6531eae19e40110c1a066"`
[INFO] [stdout] 0615bec5433d547889d18519062c40715fc62f2b89b6531eae19e40110c1a066