[INFO] cloning repository https://github.com/daviddenton/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daviddenton/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviddenton%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviddenton%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c8cdacde71c2d3b2f9ba26f0fb0e390a778f1ac
[INFO] testing daviddenton/hello-rust against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviddenton%2Fhello-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daviddenton/hello-rust on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daviddenton/hello-rust
[INFO] finished tweaking git repo https://github.com/daviddenton/hello-rust
[INFO] tweaked toml for git repo https://github.com/daviddenton/hello-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/daviddenton/hello-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ad48806800d673ccbb5fcc7cd2dc0d078c22c72d19b99ddd272adf205d9455e
[INFO] running `Command { std: "docker" "start" "-a" "2ad48806800d673ccbb5fcc7cd2dc0d078c22c72d19b99ddd272adf205d9455e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ad48806800d673ccbb5fcc7cd2dc0d078c22c72d19b99ddd272adf205d9455e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad48806800d673ccbb5fcc7cd2dc0d078c22c72d19b99ddd272adf205d9455e", kill_on_drop: false }`
[INFO] [stdout] 2ad48806800d673ccbb5fcc7cd2dc0d078c22c72d19b99ddd272adf205d9455e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6daf97011118944795ab6bc48d020e90690f04b3c94d0bf9e437c50a8709e662
[INFO] running `Command { std: "docker" "start" "-a" "6daf97011118944795ab6bc48d020e90690f04b3c94d0bf9e437c50a8709e662", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `hello_rust`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / pub fn concat<'a>(a: &'a str, b: &'a str) -> String {
[INFO] [stdout] 2  | |     [a, b].join("")
[INFO] [stdout] 3  | | }
[INFO] [stdout] 4  | |
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | }
[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 `hello-rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6daf97011118944795ab6bc48d020e90690f04b3c94d0bf9e437c50a8709e662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6daf97011118944795ab6bc48d020e90690f04b3c94d0bf9e437c50a8709e662", kill_on_drop: false }`
[INFO] [stdout] 6daf97011118944795ab6bc48d020e90690f04b3c94d0bf9e437c50a8709e662