[INFO] updating cached repository https://github.com/fenhl/adventofcode-2015-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 32047e1bed0da7e399dfdad71319a41e4294663a
[INFO] checking fenhl/adventofcode-2015-rust against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffenhl%2Fadventofcode-2015-rust" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fenhl/adventofcode-2015-rust on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fenhl/adventofcode-2015-rust
[INFO] finished tweaking git repo https://github.com/fenhl/adventofcode-2015-rust
[INFO] tweaked toml for git repo https://github.com/fenhl/adventofcode-2015-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/fenhl/adventofcode-2015-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4be1a1007f6389cf9432c66688ef4b0f1536c167e7c0b43c8e5a12da3355b6c4
[INFO] running `"docker" "start" "-a" "4be1a1007f6389cf9432c66688ef4b0f1536c167e7c0b43c8e5a12da3355b6c4"`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stderr]  --> src/puzzle/p02.rs:9:35
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let width: i32 = captures.at(1).expect("failed to get width").parse().expect("failed to parse width");
[INFO] [stderr]   |                                   ^^ method not found in `regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/puzzle/p02.rs:10:36
[INFO] [stderr]    |
[INFO] [stderr] 10 |         let length: i32 = captures.at(2).expect("failed to get length").parse().expect("failed to parse length");
[INFO] [stderr]    |                                    ^^ method not found in `regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/puzzle/p02.rs:11:36
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let height: i32 = captures.at(3).expect("failed to get height").parse().expect("failed to parse height");
[INFO] [stderr]    |                                    ^^ method not found in `regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/puzzle/p02.rs:21:35
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let width: i32 = captures.at(1).expect("failed to get width").parse().expect("failed to parse width");
[INFO] [stderr]    |                                   ^^ method not found in `regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/puzzle/p02.rs:22:36
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let length: i32 = captures.at(2).expect("failed to get length").parse().expect("failed to parse length");
[INFO] [stderr]    |                                    ^^ method not found in `regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stderr]   --> src/puzzle/p02.rs:23:36
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let height: i32 = captures.at(3).expect("failed to get height").parse().expect("failed to parse height");
[INFO] [stderr]    |                                    ^^ method not found in `regex::Captures<'_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `adventofcode`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4be1a1007f6389cf9432c66688ef4b0f1536c167e7c0b43c8e5a12da3355b6c4"`
[INFO] running `"docker" "rm" "-f" "4be1a1007f6389cf9432c66688ef4b0f1536c167e7c0b43c8e5a12da3355b6c4"`
[INFO] [stdout] 4be1a1007f6389cf9432c66688ef4b0f1536c167e7c0b43c8e5a12da3355b6c4