[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 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchaeff%2Fsparse-merkle" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Schaeff/sparse-merkle on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-7/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: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecb31380f8a2017343a4fc113eb22f85f09e5461c73156dd90aa4fdfd853fcf8
[INFO] running `Command { std: "docker" "start" "-a" "ecb31380f8a2017343a4fc113eb22f85f09e5461c73156dd90aa4fdfd853fcf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecb31380f8a2017343a4fc113eb22f85f09e5461c73156dd90aa4fdfd853fcf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecb31380f8a2017343a4fc113eb22f85f09e5461c73156dd90aa4fdfd853fcf8", kill_on_drop: false }`
[INFO] [stdout] ecb31380f8a2017343a4fc113eb22f85f09e5461c73156dd90aa4fdfd853fcf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4dd8cda7583f98f531b50f7866c2d7ef06c0bab889bdcf11ed3c32eda9e1d01
[INFO] running `Command { std: "docker" "start" "-a" "a4dd8cda7583f98f531b50f7866c2d7ef06c0bab889bdcf11ed3c32eda9e1d01", 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:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / type Value = usize;
[INFO] [stdout] 2   | | type Hash = usize;
[INFO] [stdout] 3   | |
[INFO] [stdout] 4   | | fn hash(left: Hash, right: Hash) -> Hash {
[INFO] [stdout] ...   |
[INFO] [stdout] 288 | |     println!("After insert of all the leaves: {:#?}", tree);
[INFO] [stdout] 289 | | }
[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 `sparse_merkle` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function is never used: `check_depth`
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[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 function is never used: `with_root_and_depth`
[INFO] [stdout]    --> src/main.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn with_root_and_depth(root: Node, depth: usize) -> Result<Self, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_at_0`
[INFO] [stdout]    --> src/main.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn insert_at_0(self, v: Value) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a4dd8cda7583f98f531b50f7866c2d7ef06c0bab889bdcf11ed3c32eda9e1d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4dd8cda7583f98f531b50f7866c2d7ef06c0bab889bdcf11ed3c32eda9e1d01", kill_on_drop: false }`
[INFO] [stdout] a4dd8cda7583f98f531b50f7866c2d7ef06c0bab889bdcf11ed3c32eda9e1d01