[INFO] cloning repository https://github.com/courajs/urbit-1
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/courajs/urbit-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcourajs%2Furbit-1"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcourajs%2Furbit-1'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a2e28c004f7b3d54dbb1d030f01aaa03d13ef02
[INFO] checking courajs/urbit-1 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcourajs%2Furbit-1" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/courajs/urbit-1 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-10/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8aeacfb9727ecddf7c88c08c4d2f27be67bc8510ce066f727d32ea5fed5f0f1
[INFO] running `"docker" "start" "-a" "d8aeacfb9727ecddf7c88c08c4d2f27be67bc8510ce066f727d32ea5fed5f0f1"`
[INFO] [stderr]     Checking 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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: method is never used: `value`
[INFO] [stderr]   --> src/main.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn value(&self) -> Result<u128, &'static str> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open`
[INFO] [stderr]   --> src/main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn open(&self) -> Result<(&Rc<Noun>,&Rc<Noun>), &'static str> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `left`
[INFO] [stderr]   --> src/main.rs:51:10
[INFO] [stderr]    |
[INFO] [stderr] 51 |   Cons { left: Box<Application>, right: Box<Application> },
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `right`
[INFO] [stderr]   --> src/main.rs:51:34
[INFO] [stderr]    |
[INFO] [stderr] 51 |   Cons { left: Box<Application>, right: Box<Application> },
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `op`
[INFO] [stderr]   --> src/main.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |   op: Op,
[INFO] [stderr]    |   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `reason`
[INFO] [stderr]   --> src/main.rs:67:3
[INFO] [stderr]    |
[INFO] [stderr] 67 |   reason: String,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `subject`
[INFO] [stderr]   --> src/main.rs:68:3
[INFO] [stderr]    |
[INFO] [stderr] 68 |   subject: Rc<Noun>,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `subject`
[INFO] [stderr]   --> src/main.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     subject: Rc<Noun>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `formula`
[INFO] [stderr]   --> src/main.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     formula: Rc<Noun>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `output`
[INFO] [stderr]   --> src/main.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     output: Option<Result<Rc<Noun>, String>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d8aeacfb9727ecddf7c88c08c4d2f27be67bc8510ce066f727d32ea5fed5f0f1"`
[INFO] running `"docker" "rm" "-f" "d8aeacfb9727ecddf7c88c08c4d2f27be67bc8510ce066f727d32ea5fed5f0f1"`
[INFO] [stdout] d8aeacfb9727ecddf7c88c08c4d2f27be67bc8510ce066f727d32ea5fed5f0f1