[INFO] cloning repository https://github.com/mrchoung/ft_ls
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrchoung/ft_ls" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrchoung%2Fft_ls", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrchoung%2Fft_ls'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e06725717fdcc2a358db1fbef684af394f6699ae
[INFO] testing mrchoung/ft_ls against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrchoung%2Fft_ls" "/workspace/builds/worker-102/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-102/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrchoung/ft_ls on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrchoung/ft_ls
[INFO] finished tweaking git repo https://github.com/mrchoung/ft_ls
[INFO] tweaked toml for git repo https://github.com/mrchoung/ft_ls written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] crate git repo https://github.com/mrchoung/ft_ls already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51b0f68d39ba8fafd88f2d14e908ed29bffebef8d9ee40bf5c479b075558139e
[INFO] running `Command { std: "docker" "start" "-a" "51b0f68d39ba8fafd88f2d14e908ed29bffebef8d9ee40bf5c479b075558139e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51b0f68d39ba8fafd88f2d14e908ed29bffebef8d9ee40bf5c479b075558139e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51b0f68d39ba8fafd88f2d14e908ed29bffebef8d9ee40bf5c479b075558139e", kill_on_drop: false }`
[INFO] [stdout] 51b0f68d39ba8fafd88f2d14e908ed29bffebef8d9ee40bf5c479b075558139e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d92533fb4e5e5761e717a0a35414b4df8a7f26f34ecaa870102df23a122c5ced
[INFO] running `Command { std: "docker" "start" "-a" "d92533fb4e5e5761e717a0a35414b4df8a7f26f34ecaa870102df23a122c5ced", kill_on_drop: false }`
[INFO] [stderr]    Compiling ft_ls v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `collect` exists for type `bool`, but its trait bounds were not satisfied
[INFO] [stdout]  --> src/main.rs:5:81
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let options: Vec<String> = env::args().map(|option| option.starts_with('-').collect());
[INFO] [stdout]   |                                                                                 ^^^^^^^ method cannot be called on `bool` due to unsatisfied trait bounds
[INFO] [stdout]   |
[INFO] [stdout]   = note: the following trait bounds were not satisfied:
[INFO] [stdout]           `bool: Iterator`
[INFO] [stdout]           which is required by `&mut bool: Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let options: Vec<String> = env::args().map(|option| option.starts_with('-').collect());
[INFO] [stdout]   |                  -----------   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `Vec`, found struct `Map`
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  expected due to this
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected struct `Vec<String>`
[INFO] [stdout]              found struct `Map<Args, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ft_ls` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "d92533fb4e5e5761e717a0a35414b4df8a7f26f34ecaa870102df23a122c5ced", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d92533fb4e5e5761e717a0a35414b4df8a7f26f34ecaa870102df23a122c5ced", kill_on_drop: false }`
[INFO] [stdout] d92533fb4e5e5761e717a0a35414b4df8a7f26f34ecaa870102df23a122c5ced