[INFO] updating cached repository https://github.com/Schaeff/sparse-merkle
[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] 13212aa9643dfa14bc4bfdd7ac5b5debd949bf1d
[INFO] checking Schaeff/sparse-merkle against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchaeff%2Fsparse-merkle" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Schaeff/sparse-merkle 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/Schaeff/sparse-merkle
[INFO] finished tweaking git repo https://github.com/Schaeff/sparse-merkle
[INFO] tweaked toml for git repo https://github.com/Schaeff/sparse-merkle written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Schaeff/sparse-merkle already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 057d687047aa7d63280df15bee491bad2cbba87e8ed862e0d57a42b7ea78d1d3
[INFO] running `"docker" "start" "-a" "057d687047aa7d63280df15bee491bad2cbba87e8ed862e0d57a42b7ea78d1d3"`
[INFO] [stderr]     Checking sparse_merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `sparse_merkle`
[INFO] [stderr]    --> src/main.rs:1:1
[INFO] [stderr]     |
[INFO] [stderr] 1   | / type Value = usize;
[INFO] [stderr] 2   | | type Hash = usize;
[INFO] [stderr] 3   | |
[INFO] [stderr] 4   | | fn hash(left: Hash, right: Hash) -> Hash {
[INFO] [stderr] ...   |
[INFO] [stderr] 288 | |     println!("After insert of all the leaves: {:#?}", tree);
[INFO] [stderr] 289 | | }
[INFO] [stderr]     | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `sparse_merkle`.
[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: `check_depth`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn check_depth(&self, max: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_root_and_depth`
[INFO] [stderr]    --> src/main.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn with_root_and_depth(root: Node, depth: usize) -> Result<Self, String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert_at_0`
[INFO] [stderr]    --> src/main.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn insert_at_0(self, v: Value) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "057d687047aa7d63280df15bee491bad2cbba87e8ed862e0d57a42b7ea78d1d3"`
[INFO] running `"docker" "rm" "-f" "057d687047aa7d63280df15bee491bad2cbba87e8ed862e0d57a42b7ea78d1d3"`
[INFO] [stdout] 057d687047aa7d63280df15bee491bad2cbba87e8ed862e0d57a42b7ea78d1d3