[INFO] fetching crate interoptopus_backend_c 0.13.3...
[INFO] checking interoptopus_backend_c-0.13.3 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate interoptopus_backend_c 0.13.3 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate interoptopus_backend_c 0.13.3 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interoptopus_backend_c 0.13.3
[INFO] finished tweaking crates.io crate interoptopus_backend_c 0.13.3
[INFO] tweaked toml for crates.io crate interoptopus_backend_c 0.13.3 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc39216f82445f7179cbd399bc4c29e47ffe5c223b98b935cbff6a28b1ccd576
[INFO] running `Command { std: "docker" "start" "-a" "cc39216f82445f7179cbd399bc4c29e47ffe5c223b98b935cbff6a28b1ccd576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc39216f82445f7179cbd399bc4c29e47ffe5c223b98b935cbff6a28b1ccd576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc39216f82445f7179cbd399bc4c29e47ffe5c223b98b935cbff6a28b1ccd576", kill_on_drop: false }`
[INFO] [stdout] cc39216f82445f7179cbd399bc4c29e47ffe5c223b98b935cbff6a28b1ccd576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71b7c148847a453c576e188d004433aa0a374ae7ada2017418d7d5d0bae70a56
[INFO] running `Command { std: "docker" "start" "-a" "71b7c148847a453c576e188d004433aa0a374ae7ada2017418d7d5d0bae70a56", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling darling_macro v0.13.0
[INFO] [stderr]    Compiling darling v0.13.0
[INFO] [stderr]    Compiling interoptopus_proc v0.13.3
[INFO] [stderr]     Checking interoptopus v0.13.3
[INFO] [stderr]     Checking interoptopus_backend_c v0.13.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `interoptopus_reference_project`
[INFO] [stdout]   --> tests/backend_c_ui.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let library = interoptopus_reference_project::ffi_inventory();
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `interoptopus_reference_project`
[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 E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interoptopus_backend_c` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "71b7c148847a453c576e188d004433aa0a374ae7ada2017418d7d5d0bae70a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71b7c148847a453c576e188d004433aa0a374ae7ada2017418d7d5d0bae70a56", kill_on_drop: false }`
[INFO] [stdout] 71b7c148847a453c576e188d004433aa0a374ae7ada2017418d7d5d0bae70a56
