[INFO] cloning repository https://github.com/Schaeff/sparse-merkle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Schaeff/sparse-merkle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchaeff%2Fsparse-merkle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchaeff%2Fsparse-merkle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13212aa9643dfa14bc4bfdd7ac5b5debd949bf1d
[INFO] checking Schaeff/sparse-merkle/13212aa9643dfa14bc4bfdd7ac5b5debd949bf1d against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchaeff%2Fsparse-merkle" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Schaeff/sparse-merkle on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Schaeff/sparse-merkle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4610c24c3d3ef85fd8dd6db3be81ee01483e0280d51ac8c51f5f86bc6a7f01d
[INFO] running `Command { std: "docker" "start" "-a" "f4610c24c3d3ef85fd8dd6db3be81ee01483e0280d51ac8c51f5f86bc6a7f01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4610c24c3d3ef85fd8dd6db3be81ee01483e0280d51ac8c51f5f86bc6a7f01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4610c24c3d3ef85fd8dd6db3be81ee01483e0280d51ac8c51f5f86bc6a7f01d", kill_on_drop: false }`
[INFO] [stdout] f4610c24c3d3ef85fd8dd6db3be81ee01483e0280d51ac8c51f5f86bc6a7f01d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5b4ba42eaa06099089389f3883b538f52bc830e1241dc4af7df9b74c5a27d9c
[INFO] running `Command { std: "docker" "start" "-a" "c5b4ba42eaa06099089389f3883b538f52bc830e1241dc4af7df9b74c5a27d9c", kill_on_drop: false }`
[INFO] [stderr]     Checking sparse_merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `sparse_merkle`
[INFO] [stdout]    --> src/main.rs:289:2
[INFO] [stdout]     |
[INFO] [stdout] 289 | }
[INFO] [stdout]     |  ^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `sparse_merkle` (bin "sparse_merkle") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: method `check_depth` is never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 43 |     fn check_depth(&self, max: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_root_and_depth` and `insert_at_0` are never used
[INFO] [stdout]    --> src/main.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl Tree {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] 106 |     fn with_root_and_depth(root: Node, depth: usize) -> Result<Self, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn insert_at_0(self, v: Value) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c5b4ba42eaa06099089389f3883b538f52bc830e1241dc4af7df9b74c5a27d9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b4ba42eaa06099089389f3883b538f52bc830e1241dc4af7df9b74c5a27d9c", kill_on_drop: false }`
[INFO] [stdout] c5b4ba42eaa06099089389f3883b538f52bc830e1241dc4af7df9b74c5a27d9c