[INFO] cloning repository https://github.com/Morgandel/picross-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Morgandel/picross-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMorgandel%2Fpicross-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMorgandel%2Fpicross-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8de26c881761697ae73766224e8f43ff5b7bd38d
[INFO] testing Morgandel/picross-solver 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%2FMorgandel%2Fpicross-solver" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Morgandel/picross-solver 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/Morgandel/picross-solver
[INFO] finished tweaking git repo https://github.com/Morgandel/picross-solver
[INFO] tweaked toml for git repo https://github.com/Morgandel/picross-solver written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Morgandel/picross-solver 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] cdb22156977530dcf7a556b2067a620dc33c491a191b0a713468e21fa8563f0f
[INFO] running `Command { std: "docker" "start" "-a" "cdb22156977530dcf7a556b2067a620dc33c491a191b0a713468e21fa8563f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdb22156977530dcf7a556b2067a620dc33c491a191b0a713468e21fa8563f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb22156977530dcf7a556b2067a620dc33c491a191b0a713468e21fa8563f0f", kill_on_drop: false }`
[INFO] [stdout] cdb22156977530dcf7a556b2067a620dc33c491a191b0a713468e21fa8563f0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] a2f8a2b4bc3254d9b184aa19a41ec78474106f9fbccba8c8e885b5c46ca94cd0
[INFO] running `Command { std: "docker" "start" "-a" "a2f8a2b4bc3254d9b184aa19a41ec78474106f9fbccba8c8e885b5c46ca94cd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling picross-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Regex`
[INFO] [stdout]  --> src/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let re = Regex::new("\t").unwrap();
[INFO] [stdout]   |              ^^^^^ use of undeclared type `Regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `File`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let f = File::open(format!("{}{}", path, filename)).unwrap();
[INFO] [stdout]   |             ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `BufReader`
[INFO] [stdout]  --> src/main.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let reader = BufReader::new(f);
[INFO] [stdout]   |                  ^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::BufReader;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `picross-solver` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "a2f8a2b4bc3254d9b184aa19a41ec78474106f9fbccba8c8e885b5c46ca94cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f8a2b4bc3254d9b184aa19a41ec78474106f9fbccba8c8e885b5c46ca94cd0", kill_on_drop: false }`
[INFO] [stdout] a2f8a2b4bc3254d9b184aa19a41ec78474106f9fbccba8c8e885b5c46ca94cd0