[INFO] fetching crate interoptopus_backend_c 0.2.7...
[INFO] checking interoptopus_backend_c-0.2.7 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate interoptopus_backend_c 0.2.7 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate interoptopus_backend_c 0.2.7 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interoptopus_backend_c 0.2.7
[INFO] finished tweaking crates.io crate interoptopus_backend_c 0.2.7
[INFO] tweaked toml for crates.io crate interoptopus_backend_c 0.2.7 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8876a1fd4bb60a36054b531a8d6fdc38a02303bb93196bd50ed6d8e15c736698
[INFO] running `Command { std: "docker" "start" "-a" "8876a1fd4bb60a36054b531a8d6fdc38a02303bb93196bd50ed6d8e15c736698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8876a1fd4bb60a36054b531a8d6fdc38a02303bb93196bd50ed6d8e15c736698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8876a1fd4bb60a36054b531a8d6fdc38a02303bb93196bd50ed6d8e15c736698", kill_on_drop: false }`
[INFO] [stdout] 8876a1fd4bb60a36054b531a8d6fdc38a02303bb93196bd50ed6d8e15c736698
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 446e0eb8cfa0400ce21c625f9957b3266e4c7c367861ba9d027542e5db276eb7
[INFO] running `Command { std: "docker" "start" "-a" "446e0eb8cfa0400ce21c625f9957b3266e4c7c367861ba9d027542e5db276eb7", kill_on_drop: false }`
[INFO] [stderr]     Checking interoptopus v0.2.5
[INFO] [stderr]     Checking interoptopus_backend_c v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `testing` in `interoptopus`
[INFO] [stdout]  --> tests/backend_c_ui.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use interoptopus::testing::c::compile_c_app_if_installed;
[INFO] [stdout]   |                   ^^^^^^^ could not find `testing` in `interoptopus`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `interoptopus::testing`
[INFO] [stdout]  --> tests/backend_c_ui.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use interoptopus::testing::assert_file_matches_generated;
[INFO] [stdout]   |                   ^^^^^^^ could not find `testing` in `interoptopus`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `interoptopus_reference_project`
[INFO] [stdout]   --> tests/backend_c_ui.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Generator::new(config, 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[E0425]: cannot find function `compile_c_app_if_installed` in this scope
[INFO] [stdout]   --> tests/backend_c_ui.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     compile_c_app_if_installed("tests/output/", "tests/output/app.c")?;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interoptopus_backend_c`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "446e0eb8cfa0400ce21c625f9957b3266e4c7c367861ba9d027542e5db276eb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "446e0eb8cfa0400ce21c625f9957b3266e4c7c367861ba9d027542e5db276eb7", kill_on_drop: false }`
[INFO] [stdout] 446e0eb8cfa0400ce21c625f9957b3266e4c7c367861ba9d027542e5db276eb7