Nov 28 00:03:46.436 INFO checking mvanniekerk/abelian_sandpile against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 00:03:46.437 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 00:03:46.867 INFO [stdout] f0b61dc65d9caddd159641283a2ede0aff7cab7af9dee2eb1bde6c8fefefec6d
Nov 28 00:03:46.869 INFO running `"docker" "start" "-a" "f0b61dc65d9caddd159641283a2ede0aff7cab7af9dee2eb1bde6c8fefefec6d"`
Nov 28 00:03:47.556 INFO [stderr] usermod: no changes
Nov 28 00:03:47.666 INFO [stderr]     Checking inflate v0.4.2
Nov 28 00:03:47.666 INFO [stderr]     Checking deflate v0.7.18
Nov 28 00:03:47.666 INFO [stderr]    Compiling syn v0.14.2
Nov 28 00:03:47.667 INFO [stderr]     Checking jpeg-decoder v0.1.15
Nov 28 00:03:49.245 INFO [stderr]     Checking png v0.12.0
Nov 28 00:03:56.799 INFO [stderr]    Compiling num-derive v0.2.2
Nov 28 00:03:59.263 INFO [stderr]     Checking image v0.19.0
Nov 28 00:04:04.816 INFO [stderr]     Checking abelian_sandpile v0.1.0 (/source)
Nov 28 00:04:06.518 INFO [stderr] warning: function is never used: `print_map`
Nov 28 00:04:06.518 INFO [stderr]   --> src/main.rs:65:1
Nov 28 00:04:06.518 INFO [stderr]    |
Nov 28 00:04:06.518 INFO [stderr] 65 | fn print_map(map: &Map) {
Nov 28 00:04:06.518 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.518 INFO [stderr]    |
Nov 28 00:04:06.518 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 00:04:06.518 INFO [stderr] 
Nov 28 00:04:06.519 INFO [stderr] warning: function is never used: `add`
Nov 28 00:04:06.519 INFO [stderr]    --> src/main.rs:107:1
Nov 28 00:04:06.519 INFO [stderr]     |
Nov 28 00:04:06.519 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Nov 28 00:04:06.519 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.519 INFO [stderr] 
Nov 28 00:04:06.520 INFO [stderr] warning: function is never used: `negate`
Nov 28 00:04:06.520 INFO [stderr]    --> src/main.rs:117:1
Nov 28 00:04:06.520 INFO [stderr]     |
Nov 28 00:04:06.520 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Nov 28 00:04:06.520 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.520 INFO [stderr] 
Nov 28 00:04:06.521 INFO [stderr] warning: function is never used: `subtract`
Nov 28 00:04:06.521 INFO [stderr]    --> src/main.rs:127:1
Nov 28 00:04:06.521 INFO [stderr]     |
Nov 28 00:04:06.521 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Nov 28 00:04:06.521 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.521 INFO [stderr] 
Nov 28 00:04:06.523 INFO [stderr] warning: function is never used: `identity`
Nov 28 00:04:06.523 INFO [stderr]    --> src/main.rs:131:1
Nov 28 00:04:06.523 INFO [stderr]     |
Nov 28 00:04:06.523 INFO [stderr] 131 | fn identity() -> Map {
Nov 28 00:04:06.523 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.523 INFO [stderr] 
Nov 28 00:04:06.525 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:04:06.525 INFO [stderr]    --> src/main.rs:157:5
Nov 28 00:04:06.525 INFO [stderr]     |
Nov 28 00:04:06.525 INFO [stderr] 157 |     create_dir_all(directory);
Nov 28 00:04:06.525 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.525 INFO [stderr]     |
Nov 28 00:04:06.525 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 00:04:06.525 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:04:06.525 INFO [stderr] 
Nov 28 00:04:06.669 INFO [stderr] warning: function is never used: `print_map`
Nov 28 00:04:06.669 INFO [stderr]   --> src/main.rs:65:1
Nov 28 00:04:06.669 INFO [stderr]    |
Nov 28 00:04:06.669 INFO [stderr] 65 | fn print_map(map: &Map) {
Nov 28 00:04:06.669 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.669 INFO [stderr]    |
Nov 28 00:04:06.669 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 00:04:06.669 INFO [stderr] 
Nov 28 00:04:06.669 INFO [stderr] warning: function is never used: `add`
Nov 28 00:04:06.670 INFO [stderr]    --> src/main.rs:107:1
Nov 28 00:04:06.670 INFO [stderr]     |
Nov 28 00:04:06.670 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Nov 28 00:04:06.670 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.670 INFO [stderr] 
Nov 28 00:04:06.670 INFO [stderr] warning: function is never used: `negate`
Nov 28 00:04:06.670 INFO [stderr]    --> src/main.rs:117:1
Nov 28 00:04:06.670 INFO [stderr]     |
Nov 28 00:04:06.670 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Nov 28 00:04:06.670 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.670 INFO [stderr] 
Nov 28 00:04:06.670 INFO [stderr] warning: function is never used: `subtract`
Nov 28 00:04:06.670 INFO [stderr]    --> src/main.rs:127:1
Nov 28 00:04:06.670 INFO [stderr]     |
Nov 28 00:04:06.670 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Nov 28 00:04:06.670 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.670 INFO [stderr] 
Nov 28 00:04:06.670 INFO [stderr] warning: function is never used: `identity`
Nov 28 00:04:06.670 INFO [stderr]    --> src/main.rs:131:1
Nov 28 00:04:06.670 INFO [stderr]     |
Nov 28 00:04:06.670 INFO [stderr] 131 | fn identity() -> Map {
Nov 28 00:04:06.670 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.670 INFO [stderr] 
Nov 28 00:04:06.670 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 00:04:06.671 INFO [stderr]    --> src/main.rs:157:5
Nov 28 00:04:06.671 INFO [stderr]     |
Nov 28 00:04:06.671 INFO [stderr] 157 |     create_dir_all(directory);
Nov 28 00:04:06.671 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 00:04:06.671 INFO [stderr]     |
Nov 28 00:04:06.671 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 00:04:06.671 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 00:04:06.671 INFO [stderr] 
Nov 28 00:04:06.708 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.12s
Nov 28 00:04:06.714 INFO [stderr] su: No module specific data is present
Nov 28 00:04:07.965 INFO running `"docker" "inspect" "f0b61dc65d9caddd159641283a2ede0aff7cab7af9dee2eb1bde6c8fefefec6d"`
Nov 28 00:04:08.226 INFO running `"docker" "rm" "-f" "f0b61dc65d9caddd159641283a2ede0aff7cab7af9dee2eb1bde6c8fefefec6d"`
Nov 28 00:04:08.584 INFO [stdout] f0b61dc65d9caddd159641283a2ede0aff7cab7af9dee2eb1bde6c8fefefec6d