[INFO] cloning repository https://github.com/Sixstring982/Interview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sixstring982/Interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSixstring982%2FInterview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSixstring982%2FInterview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec6e081cb239ede8dddafb589e4a6f4ed0da7356
[INFO] checking Sixstring982/Interview against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSixstring982%2FInterview" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sixstring982/Interview on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sixstring982/Interview
[INFO] finished tweaking git repo https://github.com/Sixstring982/Interview
[INFO] tweaked toml for git repo https://github.com/Sixstring982/Interview written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Sixstring982/Interview already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] 970dc1e60655ea94efa4e46e1686e068f7cb8de1b9341844582879db8147fc87
[INFO] running `Command { std: "docker" "start" "-a" "970dc1e60655ea94efa4e46e1686e068f7cb8de1b9341844582879db8147fc87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "970dc1e60655ea94efa4e46e1686e068f7cb8de1b9341844582879db8147fc87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "970dc1e60655ea94efa4e46e1686e068f7cb8de1b9341844582879db8147fc87", kill_on_drop: false }`
[INFO] [stdout] 970dc1e60655ea94efa4e46e1686e068f7cb8de1b9341844582879db8147fc87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d31b39f98a40f18f851d9ad2f61120206a0549d9019d1c4ce14926e43be635ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d31b39f98a40f18f851d9ad2f61120206a0549d9019d1c4ce14926e43be635ba", kill_on_drop: false }`
[INFO] [stderr]     Checking interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `limit`
[INFO] [stdout]   --> src/fizzbuzz.rs:24:14
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn fizz_buzz(limit: u32) -> String {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_limit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `interview`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod fizzbuzz;
[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 `interview` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d31b39f98a40f18f851d9ad2f61120206a0549d9019d1c4ce14926e43be635ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d31b39f98a40f18f851d9ad2f61120206a0549d9019d1c4ce14926e43be635ba", kill_on_drop: false }`
[INFO] [stdout] d31b39f98a40f18f851d9ad2f61120206a0549d9019d1c4ce14926e43be635ba