[INFO] updating cached repository https://github.com/courajs/urbit-1
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a2e28c004f7b3d54dbb1d030f01aaa03d13ef02
[INFO] testing courajs/urbit-1 against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcourajs%2Furbit-1" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/courajs/urbit-1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/courajs/urbit-1
[INFO] finished tweaking git repo https://github.com/courajs/urbit-1
[INFO] tweaked toml for git repo https://github.com/courajs/urbit-1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/courajs/urbit-1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] bda6b1909dd8d80c3e3438a0c974d9b6c0eccc0a588215381ce92f1b0c5eacd1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "bda6b1909dd8d80c3e3438a0c974d9b6c0eccc0a588215381ce92f1b0c5eacd1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling urbit-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/main.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / macro_rules! noun {
[INFO] [stderr] 8  | |     ()                           => {};
[INFO] [stderr] 9  | |     ($it:literal)                => { Rc::new(Noun::Atom($it)) };
[INFO] [stderr] 10 | |     ($it:literal $($rest:tt)*)   => { Rc::new(Noun::Cell(noun!($it), noun!($($rest)*))) };
[INFO] [stderr] ...  |
[INFO] [stderr] 18 | |     ({$($sub:tt)*} $($rest:tt)*) => { noun!([$($sub)*] $($rest)*) };
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `urbit_1`
[INFO] [stderr]    --> src/main.rs:1:1
[INFO] [stderr]     |
[INFO] [stderr] 1   | / #![recursion_limit="1024"]
[INFO] [stderr] 2   | | // #![feature(trace_macros)]
[INFO] [stderr] 3   | | // trace_macros!(true);
[INFO] [stderr] 4   | |
[INFO] [stderr] ...   |
[INFO] [stderr] 143 | |     }
[INFO] [stderr] 144 | | }
[INFO] [stderr]     | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `urbit-1`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bda6b1909dd8d80c3e3438a0c974d9b6c0eccc0a588215381ce92f1b0c5eacd1"`
[INFO] running `"docker" "rm" "-f" "bda6b1909dd8d80c3e3438a0c974d9b6c0eccc0a588215381ce92f1b0c5eacd1"`
[INFO] [stdout] bda6b1909dd8d80c3e3438a0c974d9b6c0eccc0a588215381ce92f1b0c5eacd1