Dec 17 18:35:20.731 INFO checking nrstepanek/advent-of-code-2018-rust against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:35:20.731 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/nrstepanek/advent-of-code-2018-rust:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 18:35:21.184 INFO [stdout] 82946c6d147e3425c8f2bf60ef28212bc4e8b7ad035b28071f6c63fe7cbc4d89
Dec 17 18:35:21.188 INFO running `"docker" "start" "-a" "82946c6d147e3425c8f2bf60ef28212bc4e8b7ad035b28071f6c63fe7cbc4d89"`
Dec 17 18:35:23.144 INFO [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
Dec 17 18:35:23.512 INFO [stderr] warning: function is never used: `calculate_frequency`
Dec 17 18:35:23.512 INFO [stderr]  --> src/frequency.rs:4:1
Dec 17 18:35:23.512 INFO [stderr]   |
Dec 17 18:35:23.512 INFO [stderr] 4 | fn calculate_frequency(input: &String) -> i32 {
Dec 17 18:35:23.512 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:35:23.512 INFO [stderr]   |
Dec 17 18:35:23.512 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 18:35:23.512 INFO [stderr] 
Dec 17 18:35:23.512 INFO [stderr] warning: function is never used: `find_duplicate_frequency`
Dec 17 18:35:23.512 INFO [stderr]   --> src/frequency.rs:24:1
Dec 17 18:35:23.512 INFO [stderr]    |
Dec 17 18:35:23.512 INFO [stderr] 24 | fn find_duplicate_frequency(input: &String) -> Option<i32> {
Dec 17 18:35:23.512 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:35:23.512 INFO [stderr] 
Dec 17 18:35:23.512 INFO [stderr] warning: function is never used: `main`
Dec 17 18:35:23.512 INFO [stderr]   --> src/frequency.rs:55:1
Dec 17 18:35:23.513 INFO [stderr]    |
Dec 17 18:35:23.513 INFO [stderr] 55 | pub fn main() {
Dec 17 18:35:23.513 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 17 18:35:23.513 INFO [stderr] 
Dec 17 18:35:23.513 INFO [stderr] warning: function is never used: `get_boxids_checksum`
Dec 17 18:35:23.513 INFO [stderr]  --> src/boxids.rs:5:1
Dec 17 18:35:23.513 INFO [stderr]   |
Dec 17 18:35:23.513 INFO [stderr] 5 | fn get_boxids_checksum(input: &String) -> i32 {
Dec 17 18:35:23.513 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:35:23.513 INFO [stderr] 
Dec 17 18:35:23.513 INFO [stderr] warning: function is never used: `find_common_chars`
Dec 17 18:35:23.513 INFO [stderr]   --> src/boxids.rs:36:1
Dec 17 18:35:23.513 INFO [stderr]    |
Dec 17 18:35:23.513 INFO [stderr] 36 | fn find_common_chars(input: &String) -> String {
Dec 17 18:35:23.513 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:35:23.513 INFO [stderr] 
Dec 17 18:35:23.513 INFO [stderr] warning: function is never used: `main`
Dec 17 18:35:23.513 INFO [stderr]   --> src/boxids.rs:71:1
Dec 17 18:35:23.513 INFO [stderr]    |
Dec 17 18:35:23.513 INFO [stderr] 71 | pub fn main() {
Dec 17 18:35:23.513 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 17 18:35:23.513 INFO [stderr] 
Dec 17 18:35:23.513 INFO [stderr] warning: variable `differentChars` should have a snake case name such as `different_chars`
Dec 17 18:35:23.513 INFO [stderr]   --> src/boxids.rs:48:17
Dec 17 18:35:23.513 INFO [stderr]    |
Dec 17 18:35:23.513 INFO [stderr] 48 |             let mut differentChars: i32 = 0;
Dec 17 18:35:23.513 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^
Dec 17 18:35:23.513 INFO [stderr]    |
Dec 17 18:35:23.513 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 17 18:35:23.513 INFO [stderr] 
Dec 17 18:35:23.694 INFO [stderr] warning: function is never used: `main`
Dec 17 18:35:23.694 INFO [stderr]   --> src/frequency.rs:55:1
Dec 17 18:35:23.694 INFO [stderr]    |
Dec 17 18:35:23.694 INFO [stderr] 55 | pub fn main() {
Dec 17 18:35:23.694 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 17 18:35:23.694 INFO [stderr]    |
Dec 17 18:35:23.694 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 18:35:23.694 INFO [stderr] 
Dec 17 18:35:23.694 INFO [stderr] warning: function is never used: `main`
Dec 17 18:35:23.694 INFO [stderr]   --> src/boxids.rs:71:1
Dec 17 18:35:23.694 INFO [stderr]    |
Dec 17 18:35:23.694 INFO [stderr] 71 | pub fn main() {
Dec 17 18:35:23.694 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 17 18:35:23.694 INFO [stderr] 
Dec 17 18:35:23.699 INFO [stderr] warning: variable `differentChars` should have a snake case name such as `different_chars`
Dec 17 18:35:23.699 INFO [stderr]   --> src/boxids.rs:48:17
Dec 17 18:35:23.699 INFO [stderr]    |
Dec 17 18:35:23.699 INFO [stderr] 48 |             let mut differentChars: i32 = 0;
Dec 17 18:35:23.699 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^
Dec 17 18:35:23.699 INFO [stderr]    |
Dec 17 18:35:23.699 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 17 18:35:23.699 INFO [stderr] 
Dec 17 18:35:23.735 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Dec 17 18:35:25.465 INFO running `"docker" "inspect" "82946c6d147e3425c8f2bf60ef28212bc4e8b7ad035b28071f6c63fe7cbc4d89"`
Dec 17 18:35:25.810 INFO running `"docker" "rm" "-f" "82946c6d147e3425c8f2bf60ef28212bc4e8b7ad035b28071f6c63fe7cbc4d89"`
Dec 17 18:35:26.104 INFO [stdout] 82946c6d147e3425c8f2bf60ef28212bc4e8b7ad035b28071f6c63fe7cbc4d89