[INFO] cloning repository https://github.com/tautologico/rslex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tautologico/rslex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftautologico%2Frslex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftautologico%2Frslex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 582233fc6de13fc7d21d0d4cd56d57fb1fafb21a
[INFO] testing tautologico/rslex against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftautologico%2Frslex" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tautologico/rslex on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tautologico/rslex
[INFO] finished tweaking git repo https://github.com/tautologico/rslex
[INFO] tweaked toml for git repo https://github.com/tautologico/rslex written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/tautologico/rslex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ac57927c5d102af6675c51611df82f8c4feb998116e0765531d64c01a07ee2a
[INFO] running `Command { std: "docker" "start" "-a" "4ac57927c5d102af6675c51611df82f8c4feb998116e0765531d64c01a07ee2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ac57927c5d102af6675c51611df82f8c4feb998116e0765531d64c01a07ee2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ac57927c5d102af6675c51611df82f8c4feb998116e0765531d64c01a07ee2a", kill_on_drop: false }`
[INFO] [stdout] 4ac57927c5d102af6675c51611df82f8c4feb998116e0765531d64c01a07ee2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbc1dc8bc038770ee5dd97200ebdfbf13dc8063ad98c4b12f33db77b597e5194
[INFO] running `Command { std: "docker" "start" "-a" "bbc1dc8bc038770ee5dd97200ebdfbf13dc8063ad98c4b12f33db77b597e5194", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling regex-syntax v0.2.2
[INFO] [stderr]    Compiling rslex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `regex`
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate regex;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Regex`
[INFO] [stdout]   --> src/parser.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let re = Regex::new(r"(\{[:alpha:]{1,}\})").unwrap();
[INFO] [stdout]    |              ^^^^^ use of undeclared type `Regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nfa::NFA`
[INFO] [stdout]  --> src/rules.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nfa::NFA;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nfa::NFABuilder`
[INFO] [stdout]  --> src/rules.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use nfa::NFABuilder;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/rules.rs:53:71
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut tmp: Box<Spec> = Box::new(regex_to_nfa_spec(&(exprs[0])));;
[INFO] [stdout]    |                                                                       ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rslex` due to 3 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bbc1dc8bc038770ee5dd97200ebdfbf13dc8063ad98c4b12f33db77b597e5194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbc1dc8bc038770ee5dd97200ebdfbf13dc8063ad98c4b12f33db77b597e5194", kill_on_drop: false }`
[INFO] [stdout] bbc1dc8bc038770ee5dd97200ebdfbf13dc8063ad98c4b12f33db77b597e5194