[INFO] fetching crate interoptopus_backend_cpython_cffi 0.13.8...
[INFO] checking interoptopus_backend_cpython_cffi-0.13.8 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate interoptopus_backend_cpython_cffi 0.13.8 into /workspace/builds/worker-3-tc1/source
[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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate interoptopus_backend_cpython_cffi 0.13.8 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding interoptopus v0.13.15 (available: v0.14.27)
[INFO] [stderr]       Adding interoptopus_backend_c v0.13.13 (available: v0.14.25)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded interoptopus_backend_c v0.13.13
[INFO] [stderr]   Downloaded interoptopus v0.13.15
[INFO] [stderr]   Downloaded interoptopus_proc v0.13.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b75650ea42908f91c0a6bffd9e8ebe1e9fadb51b704f4f116520878c00825541
[INFO] running `Command { std: "docker" "start" "-a" "b75650ea42908f91c0a6bffd9e8ebe1e9fadb51b704f4f116520878c00825541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b75650ea42908f91c0a6bffd9e8ebe1e9fadb51b704f4f116520878c00825541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b75650ea42908f91c0a6bffd9e8ebe1e9fadb51b704f4f116520878c00825541", kill_on_drop: false }`
[INFO] [stdout] b75650ea42908f91c0a6bffd9e8ebe1e9fadb51b704f4f116520878c00825541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3b107399daf6796f3761dfae06764c23fbc3d98c3c69cb2a32246ff79987ae7
[INFO] running `Command { std: "docker" "start" "-a" "d3b107399daf6796f3761dfae06764c23fbc3d98c3c69cb2a32246ff79987ae7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[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 quote v1.0.40
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling interoptopus_proc v0.13.13
[INFO] [stderr]     Checking interoptopus v0.13.15
[INFO] [stderr]     Checking interoptopus_backend_c v0.13.13
[INFO] [stderr]     Checking interoptopus_backend_cpython_cffi v0.13.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `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 unresolved module or unlinked crate `interoptopus_reference_project`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `interoptopus_reference_project`, use `cargo add interoptopus_reference_project` to add it to your `Cargo.toml`
[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` (test "backend_cpython_cffi_ui") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d3b107399daf6796f3761dfae06764c23fbc3d98c3c69cb2a32246ff79987ae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3b107399daf6796f3761dfae06764c23fbc3d98c3c69cb2a32246ff79987ae7", kill_on_drop: false }`
[INFO] [stdout] d3b107399daf6796f3761dfae06764c23fbc3d98c3c69cb2a32246ff79987ae7