[INFO] cloning repository https://github.com/isurakka/rpn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/isurakka/rpn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisurakka%2Frpn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisurakka%2Frpn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae4a80b88809cb2ed0b2068e2c7ae756bceb5846
[INFO] checking isurakka/rpn against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fisurakka%2Frpn" "/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/isurakka/rpn on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/isurakka/rpn
[INFO] finished tweaking git repo https://github.com/isurakka/rpn
[INFO] tweaked toml for git repo https://github.com/isurakka/rpn written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/isurakka/rpn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1b9e52d0bea4ca74a0faabab00c5f35340c7bdf098f192cf22c301bfc80c7a5
[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" "d1b9e52d0bea4ca74a0faabab00c5f35340c7bdf098f192cf22c301bfc80c7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1b9e52d0bea4ca74a0faabab00c5f35340c7bdf098f192cf22c301bfc80c7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1b9e52d0bea4ca74a0faabab00c5f35340c7bdf098f192cf22c301bfc80c7a5", kill_on_drop: false }`
[INFO] [stdout] d1b9e52d0bea4ca74a0faabab00c5f35340c7bdf098f192cf22c301bfc80c7a5
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7773aade8cb43e1e27254f4f7f92f62447566829f2213b529b8fc65d8271ddda
[INFO] running `Command { std: "docker" "start" "-a" "7773aade8cb43e1e27254f4f7f92f62447566829f2213b529b8fc65d8271ddda", kill_on_drop: false }`
[INFO] [stderr]     Checking rpn v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `rpn`
[INFO] [stdout]    --> src/main.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout] 2   | |
[INFO] [stdout] 3   | | fn do_operation<F, V>(f: F, v1: V, v2: V) -> V
[INFO] [stdout] 4   | |     where 
[INFO] [stdout] ...   |
[INFO] [stdout] 113 | |     }
[INFO] [stdout] 114 | | }
[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 `rpn`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7773aade8cb43e1e27254f4f7f92f62447566829f2213b529b8fc65d8271ddda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7773aade8cb43e1e27254f4f7f92f62447566829f2213b529b8fc65d8271ddda", kill_on_drop: false }`
[INFO] [stdout] 7773aade8cb43e1e27254f4f7f92f62447566829f2213b529b8fc65d8271ddda