Nov 28 00:03:46.710 INFO checking mvanniekerk/abelian_sandpile against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 00:03:46.710 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 00:03:46.970 INFO [stdout] 2f301e3e0963f7250fa932fef71985593bad7dfff85ee2e2b5aac8013975d543
Nov 28 00:03:46.974 INFO running `"docker" "start" "-a" "2f301e3e0963f7250fa932fef71985593bad7dfff85ee2e2b5aac8013975d543"`
Nov 28 00:03:47.536 INFO [stderr] usermod: no changes
Nov 28 00:03:47.708 INFO [stderr]    Compiling num-derive v0.2.2
Nov 28 00:03:47.708 INFO [stderr]     Checking png v0.12.0
Nov 28 00:03:50.468 INFO [stderr]     Checking image v0.19.0
Nov 28 00:03:55.638 INFO [stderr]     Checking abelian_sandpile v0.1.0 (/source)
Nov 28 00:03:57.599 INFO [stderr] warning: function is never used: `print_map`
Nov 28 00:03:57.599 INFO [stderr]   --> src/main.rs:65:1
Nov 28 00:03:57.599 INFO [stderr]    |
Nov 28 00:03:57.599 INFO [stderr] 65 | fn print_map(map: &Map) {
Nov 28 00:03:57.599 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.604 INFO [stderr]    |
Nov 28 00:03:57.605 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 00:03:57.605 INFO [stderr] 
Nov 28 00:03:57.606 INFO [stderr] warning: function is never used: `add`
Nov 28 00:03:57.607 INFO [stderr]    --> src/main.rs:107:1
Nov 28 00:03:57.607 INFO [stderr]     |
Nov 28 00:03:57.607 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Nov 28 00:03:57.607 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.608 INFO [stderr] 
Nov 28 00:03:57.609 INFO [stderr] warning: function is never used: `negate`
Nov 28 00:03:57.609 INFO [stderr]    --> src/main.rs:117:1
Nov 28 00:03:57.609 INFO [stderr]     |
Nov 28 00:03:57.609 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Nov 28 00:03:57.609 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.609 INFO [stderr] 
Nov 28 00:03:57.610 INFO [stderr] warning: function is never used: `subtract`
Nov 28 00:03:57.610 INFO [stderr]    --> src/main.rs:127:1
Nov 28 00:03:57.610 INFO [stderr]     |
Nov 28 00:03:57.610 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Nov 28 00:03:57.610 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.611 INFO [stderr] 
Nov 28 00:03:57.611 INFO [stderr] warning: function is never used: `identity`
Nov 28 00:03:57.611 INFO [stderr]    --> src/main.rs:131:1
Nov 28 00:03:57.611 INFO [stderr]     |
Nov 28 00:03:57.611 INFO [stderr] 131 | fn identity() -> Map {
Nov 28 00:03:57.612 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.612 INFO [stderr] 
Nov 28 00:03:57.613 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:03:57.613 INFO [stderr]    --> src/main.rs:157:5
Nov 28 00:03:57.613 INFO [stderr]     |
Nov 28 00:03:57.613 INFO [stderr] 157 |     create_dir_all(directory);
Nov 28 00:03:57.613 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.613 INFO [stderr]     |
Nov 28 00:03:57.613 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 00:03:57.613 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:03:57.613 INFO [stderr] 
Nov 28 00:03:57.695 INFO [stderr] warning: function is never used: `print_map`
Nov 28 00:03:57.695 INFO [stderr]   --> src/main.rs:65:1
Nov 28 00:03:57.695 INFO [stderr]    |
Nov 28 00:03:57.695 INFO [stderr] 65 | fn print_map(map: &Map) {
Nov 28 00:03:57.695 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.695 INFO [stderr]    |
Nov 28 00:03:57.696 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 00:03:57.696 INFO [stderr] 
Nov 28 00:03:57.697 INFO [stderr] warning: function is never used: `add`
Nov 28 00:03:57.698 INFO [stderr]    --> src/main.rs:107:1
Nov 28 00:03:57.698 INFO [stderr]     |
Nov 28 00:03:57.698 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Nov 28 00:03:57.698 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.699 INFO [stderr] 
Nov 28 00:03:57.700 INFO [stderr] warning: function is never used: `negate`
Nov 28 00:03:57.700 INFO [stderr]    --> src/main.rs:117:1
Nov 28 00:03:57.701 INFO [stderr]     |
Nov 28 00:03:57.701 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Nov 28 00:03:57.701 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.701 INFO [stderr] 
Nov 28 00:03:57.701 INFO [stderr] warning: function is never used: `subtract`
Nov 28 00:03:57.702 INFO [stderr]    --> src/main.rs:127:1
Nov 28 00:03:57.702 INFO [stderr]     |
Nov 28 00:03:57.702 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Nov 28 00:03:57.702 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.702 INFO [stderr] 
Nov 28 00:03:57.702 INFO [stderr] warning: function is never used: `identity`
Nov 28 00:03:57.703 INFO [stderr]    --> src/main.rs:131:1
Nov 28 00:03:57.703 INFO [stderr]     |
Nov 28 00:03:57.703 INFO [stderr] 131 | fn identity() -> Map {
Nov 28 00:03:57.703 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.703 INFO [stderr] 
Nov 28 00:03:57.704 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:03:57.704 INFO [stderr]    --> src/main.rs:157:5
Nov 28 00:03:57.704 INFO [stderr]     |
Nov 28 00:03:57.704 INFO [stderr] 157 |     create_dir_all(directory);
Nov 28 00:03:57.705 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:03:57.706 INFO [stderr]     |
Nov 28 00:03:57.706 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 00:03:57.707 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:03:57.707 INFO [stderr] 
Nov 28 00:03:57.742 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.19s
Nov 28 00:03:57.751 INFO [stderr] su: No module specific data is present
Nov 28 00:03:58.532 INFO running `"docker" "inspect" "2f301e3e0963f7250fa932fef71985593bad7dfff85ee2e2b5aac8013975d543"`
Nov 28 00:03:58.837 INFO running `"docker" "rm" "-f" "2f301e3e0963f7250fa932fef71985593bad7dfff85ee2e2b5aac8013975d543"`
Nov 28 00:03:59.132 INFO [stdout] 2f301e3e0963f7250fa932fef71985593bad7dfff85ee2e2b5aac8013975d543