[INFO] cloning repository https://github.com/Useless8000B/Ultrasonic-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Useless8000B/Ultrasonic-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUseless8000B%2FUltrasonic-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUseless8000B%2FUltrasonic-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6889a5e7f1ee7dc34fe40b850e3e4da58fda72e
[INFO] checking Useless8000B/Ultrasonic-Rust against 3154cc1a3e6424e44f438a95007d043ed5ceaaf6+rustflags=-Znext-solver=coherence for pr-133502-30
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUseless8000B%2FUltrasonic-Rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Useless8000B/Ultrasonic-Rust
[INFO] finished tweaking git repo https://github.com/Useless8000B/Ultrasonic-Rust
[INFO] tweaked toml for git repo https://github.com/Useless8000B/Ultrasonic-Rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Useless8000B/Ultrasonic-Rust on toolchain 3154cc1a3e6424e44f438a95007d043ed5ceaaf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Useless8000B/Ultrasonic-Rust 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" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: file `/workspace/builds/worker-6-tc1/source/src/lib.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `hc_sr04`
[INFO] [stderr]   * `bin` target `hc_sr04`
[INFO] [stderr] warning: Cargo.toml: unused manifest key: bin.0.embedded-hal
[INFO] [stderr] warning: `hc_sr04` (manifest) generated 2 warnings
[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-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895
[INFO] running `Command { std: "docker" "start" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Znext-solver=coherence" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: file `/opt/rustwide/workdir/src/lib.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `hc_sr04`
[INFO] [stderr]   * `bin` target `hc_sr04`
[INFO] [stderr] warning: Cargo.toml: unused manifest key: bin.0.embedded-hal
[INFO] [stderr] warning: `hc_sr04` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling hc_sr04 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `hc_sr04`
[INFO] [stdout]  --> src/lib.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub mod error;
[INFO] [stdout]   |               ^ consider adding a `main` function to `src/lib.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hc_sr04` (bin "hc_sr04") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895", kill_on_drop: false }`
[INFO] [stdout] 12fd2f3b27063e6eaf4eaf90f4f55906e17b2bd9ba28310eeff18fa630f74895
