[INFO] fetching crate wfc-rs 0.6.1...
[INFO] testing wfc-rs-0.6.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate wfc-rs 0.6.1 into /workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wfc-rs 0.6.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e394aeb0ad733135062d2fa600185ab4a5e86c6cad577fdeb5af4b40df8bf95b
[INFO] running `Command { std: "docker" "start" "-a" "e394aeb0ad733135062d2fa600185ab4a5e86c6cad577fdeb5af4b40df8bf95b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e394aeb0ad733135062d2fa600185ab4a5e86c6cad577fdeb5af4b40df8bf95b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e394aeb0ad733135062d2fa600185ab4a5e86c6cad577fdeb5af4b40df8bf95b", kill_on_drop: false }`
[INFO] [stdout] e394aeb0ad733135062d2fa600185ab4a5e86c6cad577fdeb5af4b40df8bf95b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba5a8a4d80ffac7160d44a09f1e2cd9dd0fdb8ef1b0b94a0b51cfb35ab37ccbc
[INFO] running `Command { std: "docker" "start" "-a" "ba5a8a4d80ffac7160d44a09f1e2cd9dd0fdb8ef1b0b94a0b51cfb35ab37ccbc", 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 1.73s
[INFO] running `Command { std: "docker" "inspect" "ba5a8a4d80ffac7160d44a09f1e2cd9dd0fdb8ef1b0b94a0b51cfb35ab37ccbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba5a8a4d80ffac7160d44a09f1e2cd9dd0fdb8ef1b0b94a0b51cfb35ab37ccbc", kill_on_drop: false }`
[INFO] [stdout] ba5a8a4d80ffac7160d44a09f1e2cd9dd0fdb8ef1b0b94a0b51cfb35ab37ccbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e6c5250df8bb21bac9529007182014d4f6047523b3a86546f904023c806fbff
[INFO] running `Command { std: "docker" "start" "-a" "8e6c5250df8bb21bac9529007182014d4f6047523b3a86546f904023c806fbff", 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] [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] 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]    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 0.39s
[INFO] running `Command { std: "docker" "inspect" "8e6c5250df8bb21bac9529007182014d4f6047523b3a86546f904023c806fbff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e6c5250df8bb21bac9529007182014d4f6047523b3a86546f904023c806fbff", kill_on_drop: false }`
[INFO] [stdout] 8e6c5250df8bb21bac9529007182014d4f6047523b3a86546f904023c806fbff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 58a953ebbe8be6b9245fe636efe3369f892a20b4b6a7814afb7906f21abe1fce
[INFO] running `Command { std: "docker" "start" "-a" "58a953ebbe8be6b9245fe636efe3369f892a20b4b6a7814afb7906f21abe1fce", 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 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wfc_rs-3f05ea73848922fe)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_image ... ok
[INFO] [stdout] test test_overlapping ... ok
[INFO] [stdout] test test_export ... FAILED
[INFO] [stdout] test test_run ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_export stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_export' (17) 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:     0x5997ab5938fa - std[128c3efe2914e152]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5997ab5938fa - std[128c3efe2914e152]::backtrace_rs::backtrace::trace_unsynchronized::<std[128c3efe2914e152]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5997ab5938fa - std[128c3efe2914e152]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5997ab5938fa - <<std[128c3efe2914e152]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5997ab5a76fa - <core[6771d259883166e6]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5997ab5a76fa - core[6771d259883166e6]::fmt::write
[INFO] [stdout]    6:     0x5997ab598172 - std[128c3efe2914e152]::io::default_write_fmt::<alloc[fef50e8eecedd288]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x5997ab598172 - <alloc[fef50e8eecedd288]::vec::Vec<u8> as std[128c3efe2914e152]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x5997ab5729df - <std[128c3efe2914e152]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5997ab5729df - std[128c3efe2914e152]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5997ab58bca9 - std[128c3efe2914e152]::panicking::default_hook
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5997ab528e8c - <alloc[fef50e8eecedd288]::boxed::Box<dyn for<'a, 'b> core[6771d259883166e6]::ops::function::Fn<(&'a std[128c3efe2914e152]::panic::PanicHookInfo<'b>,), Output = ()> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::marker::Send> as core[6771d259883166e6]::ops::function::Fn<(&std[128c3efe2914e152]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/alloc/src/boxed.rs:2263:9
[INFO] [stdout]   12:     0x5997ab528e8c - test[b137923399915ecf]::test_main_with_exit_callback::<test[b137923399915ecf]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5997ab58be62 - <alloc[fef50e8eecedd288]::boxed::Box<dyn for<'a, 'b> core[6771d259883166e6]::ops::function::Fn<(&'a std[128c3efe2914e152]::panic::PanicHookInfo<'b>,), Output = ()> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::marker::Send> as core[6771d259883166e6]::ops::function::Fn<(&std[128c3efe2914e152]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/alloc/src/boxed.rs:2263:9
[INFO] [stdout]   14:     0x5997ab58be62 - std[128c3efe2914e152]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5997ab572a98 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5997ab567bf9 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace::<std[128c3efe2914e152]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5997ab5737ad - __rustc[752cc74e29381ccc]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5997ab5a7e4c - core[6771d259883166e6]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5997ab5a7bc2 - core[6771d259883166e6]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x5997ab4fbaf6 - core::result::Result<T,E>::unwrap::hfe5938cc5b582d1e
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x5997ab4fbaf6 - wfc_rs::test_export::hc5e3af3457297c6c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:280:30
[INFO] [stdout]   22:     0x5997ab4fbc47 - wfc_rs::test_export::{{closure}}::h5a3f2d13d67cc488
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:273:21
[INFO] [stdout]   23:     0x5997ab4fa2f6 - core::ops::function::FnOnce::call_once::hc804420021c705b9
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5997ab51cf8b - <fn() -> core[6771d259883166e6]::result::Result<(), alloc[fef50e8eecedd288]::string::String> as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5997ab51cf8b - test[b137923399915ecf]::__rust_begin_short_backtrace::<core[6771d259883166e6]::result::Result<(), alloc[fef50e8eecedd288]::string::String>, fn() -> core[6771d259883166e6]::result::Result<(), alloc[fef50e8eecedd288]::string::String>>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x5997ab52995b - test[b137923399915ecf]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x5997ab52995b - <core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<test[b137923399915ecf]::run_test_in_process::{closure#0}> as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x5997ab52995b - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<test[b137923399915ecf]::run_test_in_process::{closure#0}>, core[6771d259883166e6]::result::Result<(), alloc[fef50e8eecedd288]::string::String>>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x5997ab52995b - std[128c3efe2914e152]::panicking::catch_unwind::<core[6771d259883166e6]::result::Result<(), alloc[fef50e8eecedd288]::string::String>, core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<test[b137923399915ecf]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x5997ab52995b - std[128c3efe2914e152]::panic::catch_unwind::<core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<test[b137923399915ecf]::run_test_in_process::{closure#0}>, core[6771d259883166e6]::result::Result<(), alloc[fef50e8eecedd288]::string::String>>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5997ab52995b - test[b137923399915ecf]::run_test_in_process
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5997ab52995b - test[b137923399915ecf]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5997ab523db4 - test[b137923399915ecf]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5997ab523db4 - std[128c3efe2914e152]::sys::backtrace::__rust_begin_short_backtrace::<test[b137923399915ecf]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5997ab52c562 - std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked::<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5997ab52c562 - <core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x5997ab52c562 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5997ab52c562 - std[128c3efe2914e152]::panicking::catch_unwind::<(), core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5997ab52c562 - std[128c3efe2914e152]::panic::catch_unwind::<core[6771d259883166e6]::panic::unwind_safe::AssertUnwindSafe<std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5997ab52c562 - std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked::<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5997ab52c562 - <std[128c3efe2914e152]::thread::lifecycle::spawn_unchecked<test[b137923399915ecf]::run_test::{closure#1}, ()>::{closure#1} as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5997ab59320f - <alloc[fef50e8eecedd288]::boxed::Box<dyn core[6771d259883166e6]::ops::function::FnOnce<(), Output = ()> + core[6771d259883166e6]::marker::Send> as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/alloc/src/boxed.rs:2249:9
[INFO] [stdout]   43:     0x5997ab59320f - <std[128c3efe2914e152]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x75d26e04aaa4 - <unknown>
[INFO] [stdout]   45:     0x75d26e0d7a64 - 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 3.36s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "58a953ebbe8be6b9245fe636efe3369f892a20b4b6a7814afb7906f21abe1fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a953ebbe8be6b9245fe636efe3369f892a20b4b6a7814afb7906f21abe1fce", kill_on_drop: false }`
[INFO] [stdout] 58a953ebbe8be6b9245fe636efe3369f892a20b4b6a7814afb7906f21abe1fce
