[INFO] fetching crate interoptopus_backend_c 0.9.0...
[INFO] checking interoptopus_backend_c-0.9.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate interoptopus_backend_c 0.9.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate interoptopus_backend_c 0.9.0 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 crates.io crate interoptopus_backend_c 0.9.0
[INFO] finished tweaking crates.io crate interoptopus_backend_c 0.9.0
[INFO] tweaked toml for crates.io crate interoptopus_backend_c 0.9.0 written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] 388394126e38510ff4089bf5c992056463d0ef99358761b5b57d9388369196c7
[INFO] running `Command { std: "docker" "start" "-a" "388394126e38510ff4089bf5c992056463d0ef99358761b5b57d9388369196c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "388394126e38510ff4089bf5c992056463d0ef99358761b5b57d9388369196c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "388394126e38510ff4089bf5c992056463d0ef99358761b5b57d9388369196c7", kill_on_drop: false }`
[INFO] [stdout] 388394126e38510ff4089bf5c992056463d0ef99358761b5b57d9388369196c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] 053aa32a1fc1e22b9f105d6afeba46dfcb681fb3a43760efc736e9d3a7b656c6
[INFO] running `Command { std: "docker" "start" "-a" "053aa32a1fc1e22b9f105d6afeba46dfcb681fb3a43760efc736e9d3a7b656c6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling quote v1.0.9
[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 v0.9.0
[INFO] [stderr]     Checking interoptopus v0.9.3
[INFO] [stderr]     Checking interoptopus_backend_c v0.9.0 (/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" "053aa32a1fc1e22b9f105d6afeba46dfcb681fb3a43760efc736e9d3a7b656c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "053aa32a1fc1e22b9f105d6afeba46dfcb681fb3a43760efc736e9d3a7b656c6", kill_on_drop: false }`
[INFO] [stdout] 053aa32a1fc1e22b9f105d6afeba46dfcb681fb3a43760efc736e9d3a7b656c6