Dec 04 13:35:04.839 INFO checking mvanniekerk/abelian_sandpile against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 13:35:04.839 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 13:35:05.409 INFO [stdout] 5bbf3c184117c5c100c337df555b24c94cf415fecc51dcca8acceb49bafd661b
Dec 04 13:35:05.411 INFO running `"docker" "start" "-a" "5bbf3c184117c5c100c337df555b24c94cf415fecc51dcca8acceb49bafd661b"`
Dec 04 13:35:06.520 INFO [stderr] usermod: no changes
Dec 04 13:35:06.633 INFO [stderr]     Checking inflate v0.4.2
Dec 04 13:35:06.634 INFO [stderr]    Compiling syn v0.14.2
Dec 04 13:35:06.638 INFO [stderr]     Checking rayon-core v1.4.0
Dec 04 13:35:07.791 INFO [stderr]     Checking rayon v1.0.1
Dec 04 13:35:07.995 INFO [stderr]     Checking png v0.12.0
Dec 04 13:35:14.547 INFO [stderr]     Checking jpeg-decoder v0.1.15
Dec 04 13:35:14.696 INFO [stderr]    Compiling num-derive v0.2.2
Dec 04 13:35:16.041 INFO [stderr]     Checking image v0.19.0
Dec 04 13:35:20.653 INFO [stderr]     Checking abelian_sandpile v0.1.0 (/source)
Dec 04 13:35:22.207 INFO [stderr] warning: function is never used: `print_map`
Dec 04 13:35:22.208 INFO [stderr]   --> src/main.rs:65:1
Dec 04 13:35:22.208 INFO [stderr]    |
Dec 04 13:35:22.208 INFO [stderr] 65 | fn print_map(map: &Map) {
Dec 04 13:35:22.208 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.208 INFO [stderr]    |
Dec 04 13:35:22.208 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 13:35:22.208 INFO [stderr] 
Dec 04 13:35:22.208 INFO [stderr] warning: function is never used: `add`
Dec 04 13:35:22.208 INFO [stderr]    --> src/main.rs:107:1
Dec 04 13:35:22.208 INFO [stderr]     |
Dec 04 13:35:22.208 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Dec 04 13:35:22.208 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.208 INFO [stderr] 
Dec 04 13:35:22.208 INFO [stderr] warning: function is never used: `negate`
Dec 04 13:35:22.208 INFO [stderr]    --> src/main.rs:117:1
Dec 04 13:35:22.208 INFO [stderr]     |
Dec 04 13:35:22.208 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Dec 04 13:35:22.208 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.208 INFO [stderr] 
Dec 04 13:35:22.208 INFO [stderr] warning: function is never used: `subtract`
Dec 04 13:35:22.208 INFO [stderr]    --> src/main.rs:127:1
Dec 04 13:35:22.208 INFO [stderr]     |
Dec 04 13:35:22.208 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Dec 04 13:35:22.208 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.208 INFO [stderr] 
Dec 04 13:35:22.208 INFO [stderr] warning: function is never used: `identity`
Dec 04 13:35:22.208 INFO [stderr]    --> src/main.rs:131:1
Dec 04 13:35:22.208 INFO [stderr]     |
Dec 04 13:35:22.208 INFO [stderr] 131 | fn identity() -> Map {
Dec 04 13:35:22.208 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.208 INFO [stderr] 
Dec 04 13:35:22.209 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:35:22.209 INFO [stderr]    --> src/main.rs:157:5
Dec 04 13:35:22.209 INFO [stderr]     |
Dec 04 13:35:22.209 INFO [stderr] 157 |     create_dir_all(directory);
Dec 04 13:35:22.209 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.209 INFO [stderr]     |
Dec 04 13:35:22.209 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 13:35:22.209 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:35:22.209 INFO [stderr] 
Dec 04 13:35:22.463 INFO [stderr] warning: function is never used: `print_map`
Dec 04 13:35:22.463 INFO [stderr]   --> src/main.rs:65:1
Dec 04 13:35:22.463 INFO [stderr]    |
Dec 04 13:35:22.464 INFO [stderr] 65 | fn print_map(map: &Map) {
Dec 04 13:35:22.464 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.464 INFO [stderr]    |
Dec 04 13:35:22.464 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 13:35:22.464 INFO [stderr] 
Dec 04 13:35:22.464 INFO [stderr] warning: function is never used: `add`
Dec 04 13:35:22.464 INFO [stderr]    --> src/main.rs:107:1
Dec 04 13:35:22.464 INFO [stderr]     |
Dec 04 13:35:22.465 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Dec 04 13:35:22.465 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.465 INFO [stderr] 
Dec 04 13:35:22.465 INFO [stderr] warning: function is never used: `negate`
Dec 04 13:35:22.465 INFO [stderr]    --> src/main.rs:117:1
Dec 04 13:35:22.465 INFO [stderr]     |
Dec 04 13:35:22.465 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Dec 04 13:35:22.465 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.465 INFO [stderr] 
Dec 04 13:35:22.465 INFO [stderr] warning: function is never used: `subtract`
Dec 04 13:35:22.465 INFO [stderr]    --> src/main.rs:127:1
Dec 04 13:35:22.465 INFO [stderr]     |
Dec 04 13:35:22.465 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Dec 04 13:35:22.465 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.465 INFO [stderr] 
Dec 04 13:35:22.465 INFO [stderr] warning: function is never used: `identity`
Dec 04 13:35:22.465 INFO [stderr]    --> src/main.rs:131:1
Dec 04 13:35:22.465 INFO [stderr]     |
Dec 04 13:35:22.465 INFO [stderr] 131 | fn identity() -> Map {
Dec 04 13:35:22.465 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.465 INFO [stderr] 
Dec 04 13:35:22.465 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:35:22.465 INFO [stderr]    --> src/main.rs:157:5
Dec 04 13:35:22.465 INFO [stderr]     |
Dec 04 13:35:22.465 INFO [stderr] 157 |     create_dir_all(directory);
Dec 04 13:35:22.465 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:35:22.465 INFO [stderr]     |
Dec 04 13:35:22.465 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 13:35:22.465 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:35:22.465 INFO [stderr] 
Dec 04 13:35:22.495 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.95s
Dec 04 13:35:22.501 INFO [stderr] su: No module specific data is present
Dec 04 13:35:23.131 INFO running `"docker" "inspect" "5bbf3c184117c5c100c337df555b24c94cf415fecc51dcca8acceb49bafd661b"`
Dec 04 13:35:23.363 INFO running `"docker" "rm" "-f" "5bbf3c184117c5c100c337df555b24c94cf415fecc51dcca8acceb49bafd661b"`
Dec 04 13:35:23.662 INFO [stdout] 5bbf3c184117c5c100c337df555b24c94cf415fecc51dcca8acceb49bafd661b