Dec 11 13:04:56.187 INFO checking mvanniekerk/abelian_sandpile against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:04:56.187 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 13:04:56.460 INFO [stdout] 92bc7457dc791cf287a8564ded4e8cefa2ade8ed6bafc934a0d75d4b868574b3
Dec 11 13:04:56.463 INFO running `"docker" "start" "-a" "92bc7457dc791cf287a8564ded4e8cefa2ade8ed6bafc934a0d75d4b868574b3"`
Dec 11 13:04:56.878 INFO [stderr] usermod: no changes
Dec 11 13:04:56.963 INFO [stderr]    Compiling num-derive v0.2.2
Dec 11 13:04:56.963 INFO [stderr]     Checking png v0.12.0
Dec 11 13:04:56.963 INFO [stderr]     Checking jpeg-decoder v0.1.15
Dec 11 13:04:58.526 INFO [stderr]     Checking image v0.19.0
Dec 11 13:05:02.957 INFO [stderr]     Checking abelian_sandpile v0.1.0 (/source)
Dec 11 13:05:04.772 INFO [stderr] warning: function is never used: `print_map`
Dec 11 13:05:04.773 INFO [stderr]   --> src/main.rs:65:1
Dec 11 13:05:04.773 INFO [stderr]    |
Dec 11 13:05:04.774 INFO [stderr] 65 | fn print_map(map: &Map) {
Dec 11 13:05:04.774 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.774 INFO [stderr]    |
Dec 11 13:05:04.774 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:05:04.774 INFO [stderr] 
Dec 11 13:05:04.774 INFO [stderr] warning: function is never used: `add`
Dec 11 13:05:04.775 INFO [stderr]    --> src/main.rs:107:1
Dec 11 13:05:04.775 INFO [stderr]     |
Dec 11 13:05:04.775 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Dec 11 13:05:04.775 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.775 INFO [stderr] 
Dec 11 13:05:04.775 INFO [stderr] warning: function is never used: `negate`
Dec 11 13:05:04.775 INFO [stderr]    --> src/main.rs:117:1
Dec 11 13:05:04.775 INFO [stderr]     |
Dec 11 13:05:04.775 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Dec 11 13:05:04.775 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.775 INFO [stderr] 
Dec 11 13:05:04.775 INFO [stderr] warning: function is never used: `subtract`
Dec 11 13:05:04.775 INFO [stderr]    --> src/main.rs:127:1
Dec 11 13:05:04.775 INFO [stderr]     |
Dec 11 13:05:04.775 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Dec 11 13:05:04.775 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.775 INFO [stderr] 
Dec 11 13:05:04.775 INFO [stderr] warning: function is never used: `identity`
Dec 11 13:05:04.775 INFO [stderr]    --> src/main.rs:131:1
Dec 11 13:05:04.775 INFO [stderr]     |
Dec 11 13:05:04.775 INFO [stderr] 131 | fn identity() -> Map {
Dec 11 13:05:04.775 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.775 INFO [stderr] 
Dec 11 13:05:04.775 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:04.775 INFO [stderr]    --> src/main.rs:157:5
Dec 11 13:05:04.775 INFO [stderr]     |
Dec 11 13:05:04.775 INFO [stderr] 157 |     create_dir_all(directory);
Dec 11 13:05:04.775 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.775 INFO [stderr]     |
Dec 11 13:05:04.775 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 13:05:04.775 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:04.775 INFO [stderr] 
Dec 11 13:05:04.843 INFO [stderr] warning: function is never used: `print_map`
Dec 11 13:05:04.844 INFO [stderr]   --> src/main.rs:65:1
Dec 11 13:05:04.844 INFO [stderr]    |
Dec 11 13:05:04.844 INFO [stderr] 65 | fn print_map(map: &Map) {
Dec 11 13:05:04.844 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.845 INFO [stderr]    |
Dec 11 13:05:04.845 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 13:05:04.845 INFO [stderr] 
Dec 11 13:05:04.845 INFO [stderr] warning: function is never used: `add`
Dec 11 13:05:04.846 INFO [stderr]    --> src/main.rs:107:1
Dec 11 13:05:04.846 INFO [stderr]     |
Dec 11 13:05:04.846 INFO [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
Dec 11 13:05:04.846 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.846 INFO [stderr] 
Dec 11 13:05:04.847 INFO [stderr] warning: function is never used: `negate`
Dec 11 13:05:04.847 INFO [stderr]    --> src/main.rs:117:1
Dec 11 13:05:04.847 INFO [stderr]     |
Dec 11 13:05:04.847 INFO [stderr] 117 | fn negate(mat: &Map) -> Map {
Dec 11 13:05:04.848 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.848 INFO [stderr] 
Dec 11 13:05:04.848 INFO [stderr] warning: function is never used: `subtract`
Dec 11 13:05:04.848 INFO [stderr]    --> src/main.rs:127:1
Dec 11 13:05:04.848 INFO [stderr]     |
Dec 11 13:05:04.848 INFO [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
Dec 11 13:05:04.848 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.848 INFO [stderr] 
Dec 11 13:05:04.848 INFO [stderr] warning: function is never used: `identity`
Dec 11 13:05:04.849 INFO [stderr]    --> src/main.rs:131:1
Dec 11 13:05:04.849 INFO [stderr]     |
Dec 11 13:05:04.849 INFO [stderr] 131 | fn identity() -> Map {
Dec 11 13:05:04.849 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.849 INFO [stderr] 
Dec 11 13:05:04.849 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:04.849 INFO [stderr]    --> src/main.rs:157:5
Dec 11 13:05:04.849 INFO [stderr]     |
Dec 11 13:05:04.849 INFO [stderr] 157 |     create_dir_all(directory);
Dec 11 13:05:04.849 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:04.849 INFO [stderr]     |
Dec 11 13:05:04.849 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 13:05:04.849 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:04.849 INFO [stderr] 
Dec 11 13:05:04.883 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.00s
Dec 11 13:05:04.888 INFO [stderr] su: No module specific data is present
Dec 11 13:05:05.688 INFO running `"docker" "inspect" "92bc7457dc791cf287a8564ded4e8cefa2ade8ed6bafc934a0d75d4b868574b3"`
Dec 11 13:05:05.994 INFO running `"docker" "rm" "-f" "92bc7457dc791cf287a8564ded4e8cefa2ade8ed6bafc934a0d75d4b868574b3"`
Dec 11 13:05:06.304 INFO [stdout] 92bc7457dc791cf287a8564ded4e8cefa2ade8ed6bafc934a0d75d4b868574b3