[INFO] fetching crate wfc-rs 0.6.1...
[INFO] testing wfc-rs-0.6.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate wfc-rs 0.6.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate wfc-rs 0.6.1
[INFO] finished tweaking crates.io crate wfc-rs 0.6.1
[INFO] tweaked toml for crates.io crate wfc-rs 0.6.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wfc-rs 0.6.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb1ec1f5784e1292236a8b0bd0f1fdb622af88f8a396612a36400b6f3350c4ff
[INFO] running `Command { std: "docker" "start" "-a" "bb1ec1f5784e1292236a8b0bd0f1fdb622af88f8a396612a36400b6f3350c4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb1ec1f5784e1292236a8b0bd0f1fdb622af88f8a396612a36400b6f3350c4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb1ec1f5784e1292236a8b0bd0f1fdb622af88f8a396612a36400b6f3350c4ff", kill_on_drop: false }`
[INFO] [stdout] bb1ec1f5784e1292236a8b0bd0f1fdb622af88f8a396612a36400b6f3350c4ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45f69492c0d09322bb9d00f62df3ec874bb1f94f50d92aae5fe37875a03585f6
[INFO] running `Command { std: "docker" "start" "-a" "45f69492c0d09322bb9d00f62df3ec874bb1f94f50d92aae5fe37875a03585f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling wfc-rs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: wfc-rs@0.6.1: In file included from csrc/wfc.c:7:
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__img_cmpoverlap':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:465:9: warning: unused variable 'b_y' [-Wunused-variable]
[INFO] [stderr] warning: wfc-rs@0.6.1:   465 |     int b_y = b_offy + y;
[INFO] [stderr] warning: wfc-rs@0.6.1:       |         ^~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:464:9: warning: unused variable 'a_y' [-Wunused-variable]
[INFO] [stderr] warning: wfc-rs@0.6.1:   464 |     int a_y = a_offy + y;
[INFO] [stderr] warning: wfc-rs@0.6.1:       |         ^~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__destroy_cells':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:820:61: warning: unused parameter 'cell_cnt' [-Wunused-parameter]
[INFO] [stderr] warning: wfc-rs@0.6.1:   820 | static void wfc__destroy_cells(struct wfc__cell *cells, int cell_cnt)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |                                                         ~~~~^~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__create_allowed_tiles':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:899:2: warning: label 'CLEANUP' defined but not used [-Wunused-label]
[INFO] [stderr] warning: wfc-rs@0.6.1:   899 |  CLEANUP:
[INFO] [stderr] warning: wfc-rs@0.6.1:       |  ^~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: At top level:
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:594:13: warning: 'wfc_cells' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   594 | static int *wfc_cells(struct wfc *wfc)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |             ^~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:588:13: warning: 'wfc_destroy_cells' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   588 | static void wfc_destroy_cells(int *cells)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |             ^~~~~~~~~~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:582:14: warning: 'wfc__nofunc_ptr' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   582 | static void *wfc__nofunc_ptr(const char *func_name, const char *msg, ...)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |              ^~~~~~~~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:576:12: warning: 'wfc__nofunc_int' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   576 | static int wfc__nofunc_int(const char *func_name, const char *msg, ...)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |            ^~~~~~~~~~~~~~~
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             std::mem::forget(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              argument has type `*mut u8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 96 -             std::mem::forget(data);
[INFO] [stdout] 96 +             let _ = data;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "45f69492c0d09322bb9d00f62df3ec874bb1f94f50d92aae5fe37875a03585f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f69492c0d09322bb9d00f62df3ec874bb1f94f50d92aae5fe37875a03585f6", kill_on_drop: false }`
[INFO] [stdout] 45f69492c0d09322bb9d00f62df3ec874bb1f94f50d92aae5fe37875a03585f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a11a637f1ad424355f5d4a63044ee04249bba39e2b4eb7cfd19554a7fe366bb9
[INFO] running `Command { std: "docker" "start" "-a" "a11a637f1ad424355f5d4a63044ee04249bba39e2b4eb7cfd19554a7fe366bb9", kill_on_drop: false }`
[INFO] [stderr] warning: wfc-rs@0.6.1: In file included from csrc/wfc.c:7:
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__img_cmpoverlap':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:465:9: warning: unused variable 'b_y' [-Wunused-variable]
[INFO] [stderr] warning: wfc-rs@0.6.1:   465 |     int b_y = b_offy + y;
[INFO] [stderr] warning: wfc-rs@0.6.1:       |         ^~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:464:9: warning: unused variable 'a_y' [-Wunused-variable]
[INFO] [stderr] warning: wfc-rs@0.6.1:   464 |     int a_y = a_offy + y;
[INFO] [stderr] warning: wfc-rs@0.6.1:       |         ^~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__destroy_cells':
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:820:61: warning: unused parameter 'cell_cnt' [-Wunused-parameter]
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             std::mem::forget(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              argument has type `*mut u8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 96 -             std::mem::forget(data);
[INFO] [stdout] 96 +             let _ = data;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: wfc-rs@0.6.1:   820 | static void wfc__destroy_cells(struct wfc__cell *cells, int cell_cnt)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |                                                         ~~~~^~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__create_allowed_tiles':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:899:2: warning: label 'CLEANUP' defined but not used [-Wunused-label]
[INFO] [stderr] warning: wfc-rs@0.6.1:   899 |  CLEANUP:
[INFO] [stderr] warning: wfc-rs@0.6.1:       |  ^~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: At top level:
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:594:13: warning: 'wfc_cells' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   594 | static int *wfc_cells(struct wfc *wfc)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |             ^~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:588:13: warning: 'wfc_destroy_cells' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   588 | static void wfc_destroy_cells(int *cells)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |             ^~~~~~~~~~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:582:14: warning: 'wfc__nofunc_ptr' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   582 | static void *wfc__nofunc_ptr(const char *func_name, const char *msg, ...)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |              ^~~~~~~~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:576:12: warning: 'wfc__nofunc_int' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   576 | static int wfc__nofunc_int(const char *func_name, const char *msg, ...)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |            ^~~~~~~~~~~~~~~
[INFO] [stderr]    Compiling wfc-rs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern {
[INFO] [stdout]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             std::mem::forget(data);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              argument has type `*mut u8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 96 -             std::mem::forget(data);
[INFO] [stdout] 96 +             let _ = data;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "a11a637f1ad424355f5d4a63044ee04249bba39e2b4eb7cfd19554a7fe366bb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a11a637f1ad424355f5d4a63044ee04249bba39e2b4eb7cfd19554a7fe366bb9", kill_on_drop: false }`
[INFO] [stdout] a11a637f1ad424355f5d4a63044ee04249bba39e2b4eb7cfd19554a7fe366bb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6ef7a2abd9f558d0a667d6956337a4cc2db0565965578995dcbe31004f846b39
[INFO] running `Command { std: "docker" "start" "-a" "6ef7a2abd9f558d0a667d6956337a4cc2db0565965578995dcbe31004f846b39", kill_on_drop: false }`
[INFO] [stderr] warning: wfc-rs@0.6.1: In file included from csrc/wfc.c:7:
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__img_cmpoverlap':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:465:9: warning: unused variable 'b_y' [-Wunused-variable]
[INFO] [stderr] warning: wfc-rs@0.6.1:   465 |     int b_y = b_offy + y;
[INFO] [stderr] warning: wfc-rs@0.6.1:       |         ^~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:464:9: warning: unused variable 'a_y' [-Wunused-variable]
[INFO] [stderr] warning: wfc-rs@0.6.1:   464 |     int a_y = a_offy + y;
[INFO] [stderr] warning: wfc-rs@0.6.1:       |         ^~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__destroy_cells':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:820:61: warning: unused parameter 'cell_cnt' [-Wunused-parameter]
[INFO] [stderr] warning: wfc-rs@0.6.1:   820 | static void wfc__destroy_cells(struct wfc__cell *cells, int cell_cnt)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |                                                         ~~~~^~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: In function 'wfc__create_allowed_tiles':
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:899:2: warning: label 'CLEANUP' defined but not used [-Wunused-label]
[INFO] [stderr] warning: wfc-rs@0.6.1:   899 |  CLEANUP:
[INFO] [stderr] warning: wfc-rs@0.6.1:       |  ^~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h: At top level:
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:594:13: warning: 'wfc_cells' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   594 | static int *wfc_cells(struct wfc *wfc)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |             ^~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:588:13: warning: 'wfc_destroy_cells' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   588 | static void wfc_destroy_cells(int *cells)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |             ^~~~~~~~~~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:582:14: warning: 'wfc__nofunc_ptr' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   582 | static void *wfc__nofunc_ptr(const char *func_name, const char *msg, ...)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |              ^~~~~~~~~~~~~~~
[INFO] [stderr] warning: wfc-rs@0.6.1: csrc/wfc.h:576:12: warning: 'wfc__nofunc_int' defined but not used [-Wunused-function]
[INFO] [stderr] warning: wfc-rs@0.6.1:   576 | static int wfc__nofunc_int(const char *func_name, const char *msg, ...)
[INFO] [stderr] warning: wfc-rs@0.6.1:       |            ^~~~~~~~~~~~~~~
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]  --> src/lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | extern {
[INFO] [stderr]   | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stderr]   --> src/lib.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |             std::mem::forget(data);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^----^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              argument has type `*mut u8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(forgetting_copy_types)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]    |
[INFO] [stderr] 96 -             std::mem::forget(data);
[INFO] [stderr] 96 +             let _ = data;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `wfc-rs` (lib) generated 2 warnings (run `cargo fix --lib -p wfc-rs` to apply 1 suggestion)
[INFO] [stderr] warning: `wfc-rs` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wfc_rs-73c7b96e3b0b1a63)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_image ... ok
[INFO] [stdout] test test_overlapping ... ok
[INFO] [stdout] test test_run ... ok
[INFO] [stdout] test test_export ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_export stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_export' (25) panicked at src/lib.rs:280:30:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: "wfc_export returned an error!"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x60b8d68b61d2 - std::backtrace_rs::backtrace::libunwind::trace::h62f3c6bea0fedab3
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x60b8d68b61d2 - std::backtrace_rs::backtrace::trace_unsynchronized::hc41aaca6c0af0bde
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x60b8d68b61d2 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x60b8d68b61d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h4e0a3aeea0f9c085
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x60b8d68c631f - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x60b8d68c631f - core::fmt::write::hecf68a131630c74d
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x60b8d6883591 - std::io::default_write_fmt::ha6b238eff7f0ef8a
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x60b8d6883591 - std::io::Write::write_fmt::h9846fe3d2a36c1ea
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x60b8d688f7c2 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x60b8d689430f - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x60b8d68941a1 - std::panicking::default_hook::h63f9bf8161c5d325
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x60b8d6854d0e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb8126f8384f98101
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x60b8d6854d0e - test::test_main_with_exit_callback::{{closure}}::hae96ae0cd2f2ce70
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x60b8d68949cf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha703f6686c81d0c6
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x60b8d68949cf - std::panicking::panic_with_hook::h3173740e06bd0752
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x60b8d689482a - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x60b8d688f8f9 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x60b8d6877bcd - __rustc[de0091b922c53d7e]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x60b8d68cdc20 - core::panicking::panic_fmt::h5138da2ef87be35b
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x60b8d68cd336 - core::result::unwrap_failed::h5d9b16b0b732a2ac
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/result.rs:1855:5
[INFO] [stdout]   20:     0x60b8d6812978 - core::result::Result<T,E>::unwrap::h5b6ae1b7f4b660bc
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/result.rs:1226:23
[INFO] [stdout]   21:     0x60b8d6812978 - wfc_rs::test_export::h44e58271002569da
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:280:30
[INFO] [stdout]   22:     0x60b8d6812ac7 - wfc_rs::test_export::{{closure}}::h910a6b615083a533
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:273:21
[INFO] [stdout]   23:     0x60b8d6810d06 - core::ops::function::FnOnce::call_once::h56317d352045debf
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x60b8d6854aeb - core::ops::function::FnOnce::call_once::h8f50ae93d93b62b4
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x60b8d6854aeb - test::__rust_begin_short_backtrace::h447963718d05a644
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x60b8d686a725 - test::run_test_in_process::{{closure}}::hf890ba4755ca86c0
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x60b8d686a725 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h31e4b2860e583faa
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x60b8d686a725 - std::panicking::catch_unwind::do_call::hec7cdbbe797e2cab
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x60b8d686a725 - std::panicking::catch_unwind::h24d3b93458b5ba67
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x60b8d686a725 - std::panic::catch_unwind::h46eeec7cf9c9336c
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x60b8d686a725 - test::run_test_in_process::h290de6e559006104
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x60b8d686a725 - test::run_test::{{closure}}::h26eeb2c5f7e9a995
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x60b8d6840f24 - test::run_test::{{closure}}::h85af00882daabeaa
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x60b8d6840f24 - std::sys::backtrace::__rust_begin_short_backtrace::h9d9305dda51fa5f2
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x60b8d68448ca - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc6aada8b43f0527b
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x60b8d68448ca - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::ha89fe5505c1206f5
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x60b8d68448ca - std::panicking::catch_unwind::do_call::he3e0bef721d99583
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x60b8d68448ca - std::panicking::catch_unwind::ha8241964d3d773cd
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x60b8d68448ca - std::panic::catch_unwind::ha8554bc7696cae72
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x60b8d68448ca - std::thread::Builder::spawn_unchecked_::{{closure}}::he06f1f62b4c90f8d
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x60b8d68448ca - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha7fd20ecae19b9b9
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x60b8d688aaef - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h43642ed9c40e0ab2
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x60b8d688aaef - std::sys::thread::unix::Thread::new::thread_start::h38da0f633f090ce2
[INFO] [stdout]                                at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   44:     0x737559526aa4 - <unknown>
[INFO] [stdout]   45:     0x7375595b3a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_export
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "6ef7a2abd9f558d0a667d6956337a4cc2db0565965578995dcbe31004f846b39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef7a2abd9f558d0a667d6956337a4cc2db0565965578995dcbe31004f846b39", kill_on_drop: false }`
[INFO] [stdout] 6ef7a2abd9f558d0a667d6956337a4cc2db0565965578995dcbe31004f846b39
