[INFO] cloning repository https://github.com/tahavirdiwala/rust_core
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tahavirdiwala/rust_core" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftahavirdiwala%2Frust_core", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftahavirdiwala%2Frust_core'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1022724c0973d11b65513910a1c2fd7cd8b3f1db
[INFO] checking tahavirdiwala/rust_core against try#3298c2ca5e390fd0d104357fdeec514a152a9561 for pr-136490
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftahavirdiwala%2Frust_core" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tahavirdiwala/rust_core on toolchain 3298c2ca5e390fd0d104357fdeec514a152a9561
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3298c2ca5e390fd0d104357fdeec514a152a9561" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tahavirdiwala/rust_core
[INFO] finished tweaking git repo https://github.com/tahavirdiwala/rust_core
[INFO] tweaked toml for git repo https://github.com/tahavirdiwala/rust_core written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tahavirdiwala/rust_core already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3298c2ca5e390fd0d104357fdeec514a152a9561" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+3298c2ca5e390fd0d104357fdeec514a152a9561" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea10ac3d17fd368c591994164311518c87a0813cfe2a3c02c68975710c1e9205
[INFO] running `Command { std: "docker" "start" "-a" "ea10ac3d17fd368c591994164311518c87a0813cfe2a3c02c68975710c1e9205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea10ac3d17fd368c591994164311518c87a0813cfe2a3c02c68975710c1e9205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea10ac3d17fd368c591994164311518c87a0813cfe2a3c02c68975710c1e9205", kill_on_drop: false }`
[INFO] [stdout] ea10ac3d17fd368c591994164311518c87a0813cfe2a3c02c68975710c1e9205
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+3298c2ca5e390fd0d104357fdeec514a152a9561" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d3a542254101e7299db6bf0d2bb87b56ac2d63e4b2b4f87863f620ee3e0ca83
[INFO] running `Command { std: "docker" "start" "-a" "1d3a542254101e7299db6bf0d2bb87b56ac2d63e4b2b4f87863f620ee3e0ca83", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `rust_core`
[INFO] [stdout]    --> src/main.rs:397:5
[INFO] [stdout]     |
[INFO] [stdout] 397 | // }
[INFO] [stdout]     |     ^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_core` (bin "rust_core") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "1d3a542254101e7299db6bf0d2bb87b56ac2d63e4b2b4f87863f620ee3e0ca83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d3a542254101e7299db6bf0d2bb87b56ac2d63e4b2b4f87863f620ee3e0ca83", kill_on_drop: false }`
[INFO] [stdout] 1d3a542254101e7299db6bf0d2bb87b56ac2d63e4b2b4f87863f620ee3e0ca83