[INFO] cloning repository https://github.com/walterg2/rust_fizzbuzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/walterg2/rust_fizzbuzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalterg2%2Frust_fizzbuzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalterg2%2Frust_fizzbuzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 989b6455847fea365c85563626ee4a9c2ad54f7a
[INFO] checking walterg2/rust_fizzbuzz against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalterg2%2Frust_fizzbuzz" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/walterg2/rust_fizzbuzz on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/walterg2/rust_fizzbuzz
[INFO] finished tweaking git repo https://github.com/walterg2/rust_fizzbuzz
[INFO] tweaked toml for git repo https://github.com/walterg2/rust_fizzbuzz written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/walterg2/rust_fizzbuzz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b9885bfa9623068e4d4f8ab822dc21ef5bc2bd9b26b3b39cdc2fe9a93d0c7b4
[INFO] running `Command { std: "docker" "start" "-a" "3b9885bfa9623068e4d4f8ab822dc21ef5bc2bd9b26b3b39cdc2fe9a93d0c7b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b9885bfa9623068e4d4f8ab822dc21ef5bc2bd9b26b3b39cdc2fe9a93d0c7b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b9885bfa9623068e4d4f8ab822dc21ef5bc2bd9b26b3b39cdc2fe9a93d0c7b4", kill_on_drop: false }`
[INFO] [stdout] 3b9885bfa9623068e4d4f8ab822dc21ef5bc2bd9b26b3b39cdc2fe9a93d0c7b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ac713ba89c5df6eb88cb9d264e80b6448dd7415129848aae6695b8e5c121957
[INFO] running `Command { std: "docker" "start" "-a" "7ac713ba89c5df6eb88cb9d264e80b6448dd7415129848aae6695b8e5c121957", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking learn-rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] error[E0601]: `main` function not found in crate `learn_rust`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / fn fizzbuzz(num: i8) -> String {
[INFO] [stdout] 2  | |     if num % (3*5) == 0 {
[INFO] [stdout] 3  | |         return "fizzbuzz".to_string();
[INFO] [stdout] 4  | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |     }
[INFO] [stdout] 59 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn-rust` due to 2 previous errors
[INFO] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "7ac713ba89c5df6eb88cb9d264e80b6448dd7415129848aae6695b8e5c121957", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac713ba89c5df6eb88cb9d264e80b6448dd7415129848aae6695b8e5c121957", kill_on_drop: false }`
[INFO] [stdout] 7ac713ba89c5df6eb88cb9d264e80b6448dd7415129848aae6695b8e5c121957