[INFO] updating cached repository https://github.com/thismat/RustyBot
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf9dffc4aecfade287155a672fe514f6b06cce56
[INFO] testing thismat/RustyBot against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthismat%2FRustyBot" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thismat/RustyBot on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thismat/RustyBot
[INFO] finished tweaking git repo https://github.com/thismat/RustyBot
[INFO] tweaked toml for git repo https://github.com/thismat/RustyBot written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/thismat/RustyBot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/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[INFO] the lockfile is outdated, regenerating it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 `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 48fad6ce30c2892c0a9609af41ed2785e0ea878915baa7bcdb0171d78f56cc2d
[INFO] running `Command { std: "docker" "start" "-a" "48fad6ce30c2892c0a9609af41ed2785e0ea878915baa7bcdb0171d78f56cc2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48fad6ce30c2892c0a9609af41ed2785e0ea878915baa7bcdb0171d78f56cc2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48fad6ce30c2892c0a9609af41ed2785e0ea878915baa7bcdb0171d78f56cc2d", kill_on_drop: false }`
[INFO] [stdout] 48fad6ce30c2892c0a9609af41ed2785e0ea878915baa7bcdb0171d78f56cc2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75904450d14f326bfb915c207132303d7616012bd17e721fdd0bb74d1dc3a5dd
[INFO] running `Command { std: "docker" "start" "-a" "75904450d14f326bfb915c207132303d7616012bd17e721fdd0bb74d1dc3a5dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling rusty_bot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/irc/irc.rs:95:58
[INFO] [stdout]    |
[INFO] [stdout] 95 |                         let pong = format!("PONG :{}", c.at(1).unwrap_or(""));
[INFO] [stdout]    |                                                          ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/irc/message.rs:15:34
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     from_nick: c.at(4).unwrap().to_string(),
[INFO] [stdout]    |                                  ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty_bot`.
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/irc/message.rs:16:32
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     channel: c.at(5).unwrap().to_string(),
[INFO] [stdout]    |                                ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/irc/message.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 |                     message: c.at(6).unwrap().to_string(),
[INFO] [stdout]    |                                ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "75904450d14f326bfb915c207132303d7616012bd17e721fdd0bb74d1dc3a5dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75904450d14f326bfb915c207132303d7616012bd17e721fdd0bb74d1dc3a5dd", kill_on_drop: false }`
[INFO] [stdout] 75904450d14f326bfb915c207132303d7616012bd17e721fdd0bb74d1dc3a5dd