[INFO] fetching crate interoptopus_backend_cpython_cffi 0.13.8...
[INFO] checking interoptopus_backend_cpython_cffi-0.13.8 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate interoptopus_backend_cpython_cffi 0.13.8 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate interoptopus_backend_cpython_cffi 0.13.8 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interoptopus_backend_cpython_cffi 0.13.8
[INFO] finished tweaking crates.io crate interoptopus_backend_cpython_cffi 0.13.8
[INFO] tweaked toml for crates.io crate interoptopus_backend_cpython_cffi 0.13.8 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded interoptopus_backend_c v0.13.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11f25d8d489424cdd660683a9b336c97426fc5a624a7c1cf85985f88fd6a95f0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "11f25d8d489424cdd660683a9b336c97426fc5a624a7c1cf85985f88fd6a95f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11f25d8d489424cdd660683a9b336c97426fc5a624a7c1cf85985f88fd6a95f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f25d8d489424cdd660683a9b336c97426fc5a624a7c1cf85985f88fd6a95f0", kill_on_drop: false }`
[INFO] [stdout] 11f25d8d489424cdd660683a9b336c97426fc5a624a7c1cf85985f88fd6a95f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a4d643a79152a52c1ecc393eb544b23d6d35a893cf1f77bca2006a222724141
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7a4d643a79152a52c1ecc393eb544b23d6d35a893cf1f77bca2006a222724141", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling syn v1.0.82
[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 v0.13.10
[INFO] [stderr]     Checking interoptopus v0.13.8
[INFO] [stderr]     Checking interoptopus_backend_c v0.13.8
[INFO] [stderr]     Checking interoptopus_backend_cpython_cffi v0.13.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `interoptopus_reference_project`
[INFO] [stdout]  --> tests/backend_cpython_cffi_ui.rs:8:39
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Generator::new(Config::default(), interoptopus_reference_project::ffi_inventory()).write_file(output)
[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_cpython_cffi` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7a4d643a79152a52c1ecc393eb544b23d6d35a893cf1f77bca2006a222724141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4d643a79152a52c1ecc393eb544b23d6d35a893cf1f77bca2006a222724141", kill_on_drop: false }`
[INFO] [stdout] 7a4d643a79152a52c1ecc393eb544b23d6d35a893cf1f77bca2006a222724141