Dec 17 19:07:40.352 INFO checking mvanniekerk/abelian_sandpile against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:07:40.352 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mvanniekerk/abelian_sandpile:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:07:40.561 INFO [stdout] 3f6a6d38da32c5f9c86ad20d3890cc5e7c0b92bc417d5ba99e9936ab7b45e527
Dec 17 19:07:40.564 INFO running `"docker" "start" "-a" "3f6a6d38da32c5f9c86ad20d3890cc5e7c0b92bc417d5ba99e9936ab7b45e527"`
Dec 17 19:07:41.349 INFO [stderr]     Checking inflate v0.4.2
Dec 17 19:07:41.353 INFO [stderr]    Compiling num-derive v0.2.2
Dec 17 19:07:41.353 INFO [stderr]     Checking jpeg-decoder v0.1.15
Dec 17 19:07:42.500 INFO [stderr]     Checking png v0.12.0
Dec 17 19:07:43.367 INFO [stderr]     Checking image v0.19.0
Dec 17 19:07:47.336 INFO [stderr]     Checking abelian_sandpile v0.1.0 (/opt/crater/workdir)
Dec 17 19:07:47.976 INFO [stderr] warning: function is never used: `print_map`
Dec 17 19:07:47.976 INFO [stderr]   --> src/main.rs:65:1
Dec 17 19:07:47.976 INFO [stderr]    |
Dec 17 19:07:47.976 INFO [stderr] 65 | fn print_map(map: &Map) {
Dec 17 19:07:47.976 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:47.976 INFO [stderr]    |
Dec 17 19:07:47.976 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:07:47.976 INFO [stderr] 
Dec 17 19:07:47.976 INFO [stderr] warning: function is never used: `add`
Dec 17 19:07:47.976 INFO [stderr]    --> src/main.rs:107:1
Dec 17 19:07:47.976 INFO [stderr]     |
Dec 17 19:07:47.976 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Dec 17 19:07:47.976 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:47.976 INFO [stderr] 
Dec 17 19:07:47.976 INFO [stderr] warning: function is never used: `negate`
Dec 17 19:07:47.976 INFO [stderr]    --> src/main.rs:117:1
Dec 17 19:07:47.976 INFO [stderr]     |
Dec 17 19:07:47.976 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Dec 17 19:07:47.976 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:47.976 INFO [stderr] 
Dec 17 19:07:47.976 INFO [stderr] warning: function is never used: `subtract`
Dec 17 19:07:47.976 INFO [stderr]    --> src/main.rs:127:1
Dec 17 19:07:47.976 INFO [stderr]     |
Dec 17 19:07:47.976 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Dec 17 19:07:47.976 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:47.976 INFO [stderr] 
Dec 17 19:07:47.976 INFO [stderr] warning: function is never used: `identity`
Dec 17 19:07:47.976 INFO [stderr]    --> src/main.rs:131:1
Dec 17 19:07:47.976 INFO [stderr]     |
Dec 17 19:07:47.976 INFO [stderr] 131 | fn identity() -> Map {
Dec 17 19:07:47.976 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:47.976 INFO [stderr] 
Dec 17 19:07:47.976 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:07:47.976 INFO [stderr]    --> src/main.rs:157:5
Dec 17 19:07:47.976 INFO [stderr]     |
Dec 17 19:07:47.976 INFO [stderr] 157 |     create_dir_all(directory);
Dec 17 19:07:47.976 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:47.976 INFO [stderr]     |
Dec 17 19:07:47.976 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:07:47.976 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:07:47.976 INFO [stderr] 
Dec 17 19:07:48.000 INFO [stderr] warning: function is never used: `print_map`
Dec 17 19:07:48.000 INFO [stderr]   --> src/main.rs:65:1
Dec 17 19:07:48.000 INFO [stderr]    |
Dec 17 19:07:48.000 INFO [stderr] 65 | fn print_map(map: &Map) {
Dec 17 19:07:48.000 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:48.000 INFO [stderr]    |
Dec 17 19:07:48.000 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:07:48.000 INFO [stderr] 
Dec 17 19:07:48.000 INFO [stderr] warning: function is never used: `add`
Dec 17 19:07:48.000 INFO [stderr]    --> src/main.rs:107:1
Dec 17 19:07:48.000 INFO [stderr]     |
Dec 17 19:07:48.000 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Dec 17 19:07:48.000 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:48.000 INFO [stderr] 
Dec 17 19:07:48.000 INFO [stderr] warning: function is never used: `negate`
Dec 17 19:07:48.000 INFO [stderr]    --> src/main.rs:117:1
Dec 17 19:07:48.000 INFO [stderr]     |
Dec 17 19:07:48.000 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Dec 17 19:07:48.000 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:48.000 INFO [stderr] 
Dec 17 19:07:48.000 INFO [stderr] warning: function is never used: `subtract`
Dec 17 19:07:48.000 INFO [stderr]    --> src/main.rs:127:1
Dec 17 19:07:48.000 INFO [stderr]     |
Dec 17 19:07:48.000 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Dec 17 19:07:48.000 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:48.000 INFO [stderr] 
Dec 17 19:07:48.000 INFO [stderr] warning: function is never used: `identity`
Dec 17 19:07:48.000 INFO [stderr]    --> src/main.rs:131:1
Dec 17 19:07:48.000 INFO [stderr]     |
Dec 17 19:07:48.000 INFO [stderr] 131 | fn identity() -> Map {
Dec 17 19:07:48.000 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:48.000 INFO [stderr] 
Dec 17 19:07:48.004 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:07:48.004 INFO [stderr]    --> src/main.rs:157:5
Dec 17 19:07:48.004 INFO [stderr]     |
Dec 17 19:07:48.004 INFO [stderr] 157 |     create_dir_all(directory);
Dec 17 19:07:48.004 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:07:48.004 INFO [stderr]     |
Dec 17 19:07:48.004 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:07:48.004 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:07:48.004 INFO [stderr] 
Dec 17 19:07:48.029 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.78s
Dec 17 19:07:48.579 INFO running `"docker" "inspect" "3f6a6d38da32c5f9c86ad20d3890cc5e7c0b92bc417d5ba99e9936ab7b45e527"`
Dec 17 19:07:48.874 INFO running `"docker" "rm" "-f" "3f6a6d38da32c5f9c86ad20d3890cc5e7c0b92bc417d5ba99e9936ab7b45e527"`
Dec 17 19:07:49.180 INFO [stdout] 3f6a6d38da32c5f9c86ad20d3890cc5e7c0b92bc417d5ba99e9936ab7b45e527