[INFO] fetching crate interoptopus_backend_c 0.14.0...
[INFO] testing interoptopus_backend_c-0.14.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate interoptopus_backend_c 0.14.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate interoptopus_backend_c 0.14.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interoptopus_backend_c 0.14.0
[INFO] finished tweaking crates.io crate interoptopus_backend_c 0.14.0
[INFO] tweaked toml for crates.io crate interoptopus_backend_c 0.14.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 773da4aef05c5f2d02c9687baaf49334b3d3cdb78462f9193179d724a36f0da0
[INFO] running `Command { std: "docker" "start" "-a" "773da4aef05c5f2d02c9687baaf49334b3d3cdb78462f9193179d724a36f0da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "773da4aef05c5f2d02c9687baaf49334b3d3cdb78462f9193179d724a36f0da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "773da4aef05c5f2d02c9687baaf49334b3d3cdb78462f9193179d724a36f0da0", kill_on_drop: false }`
[INFO] [stdout] 773da4aef05c5f2d02c9687baaf49334b3d3cdb78462f9193179d724a36f0da0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fae5017b11fb48c29e00cf7712b81fae2088c271703d31261535d1b25ecedbc
[INFO] running `Command { std: "docker" "start" "-a" "5fae5017b11fb48c29e00cf7712b81fae2088c271703d31261535d1b25ecedbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]    Compiling darling v0.13.1
[INFO] [stderr]    Compiling interoptopus_proc v0.14.0
[INFO] [stderr]    Compiling interoptopus v0.14.0
[INFO] [stderr]    Compiling interoptopus_backend_c v0.14.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.94s
[INFO] running `Command { std: "docker" "inspect" "5fae5017b11fb48c29e00cf7712b81fae2088c271703d31261535d1b25ecedbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fae5017b11fb48c29e00cf7712b81fae2088c271703d31261535d1b25ecedbc", kill_on_drop: false }`
[INFO] [stdout] 5fae5017b11fb48c29e00cf7712b81fae2088c271703d31261535d1b25ecedbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2f30157e0709ea22f8364f6dc8647a9077281ced0f6757ac6da20974b94565d
[INFO] running `Command { std: "docker" "start" "-a" "e2f30157e0709ea22f8364f6dc8647a9077281ced0f6757ac6da20974b94565d", kill_on_drop: false }`
[INFO] [stderr]    Compiling interoptopus_backend_c v0.14.0 (/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:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let inventory = interoptopus_reference_project::ffi_inventory();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `interoptopus_reference_project`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interoptopus_backend_c` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e2f30157e0709ea22f8364f6dc8647a9077281ced0f6757ac6da20974b94565d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f30157e0709ea22f8364f6dc8647a9077281ced0f6757ac6da20974b94565d", kill_on_drop: false }`
[INFO] [stdout] e2f30157e0709ea22f8364f6dc8647a9077281ced0f6757ac6da20974b94565d