[INFO] updating cached repository nrstepanek/advent-of-code-2018-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nrstepanek/advent-of-code-2018-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nrstepanek/advent-of-code-2018-rust" "work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/nrstepanek/advent-of-code-2018-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/nrstepanek/advent-of-code-2018-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nrstepanek/advent-of-code-2018-rust" "work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/nrstepanek/advent-of-code-2018-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/nrstepanek/advent-of-code-2018-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4fde8f4cbfbbe1113ef597dafa8387ff82eb9b8b
[INFO] sha for GitHub repo nrstepanek/advent-of-code-2018-rust: 4fde8f4cbfbbe1113ef597dafa8387ff82eb9b8b
[INFO] validating manifest of nrstepanek/advent-of-code-2018-rust on toolchain master#6ecad338381cc3b8d56e2df22e5971a598eddd6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nrstepanek/advent-of-code-2018-rust on toolchain try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nrstepanek/advent-of-code-2018-rust
[INFO] finished frobbing nrstepanek/advent-of-code-2018-rust
[INFO] frobbed toml for nrstepanek/advent-of-code-2018-rust written to work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/nrstepanek/advent-of-code-2018-rust/Cargo.toml
[INFO] started frobbing nrstepanek/advent-of-code-2018-rust
[INFO] finished frobbing nrstepanek/advent-of-code-2018-rust
[INFO] frobbed toml for nrstepanek/advent-of-code-2018-rust written to work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/nrstepanek/advent-of-code-2018-rust/Cargo.toml
[INFO] crate nrstepanek/advent-of-code-2018-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nrstepanek/advent-of-code-2018-rust against try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f for pr-57501
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57501/worker-2/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/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" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 048773e3b0acdbc5c50e65c7f8375a74c6f93c302eb7538b52275ada65f86c7a
[INFO] running `"docker" "start" "-a" "048773e3b0acdbc5c50e65c7f8375a74c6f93c302eb7538b52275ada65f86c7a"`
[INFO] [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `calculate_frequency`
[INFO] [stderr]  --> src/frequency.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn calculate_frequency(input: &String) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_duplicate_frequency`
[INFO] [stderr]   --> src/frequency.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn find_duplicate_frequency(input: &String) -> Option<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/frequency.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_boxids_checksum`
[INFO] [stderr]  --> src/boxids.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn get_boxids_checksum(input: &String) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_common_chars`
[INFO] [stderr]   --> src/boxids.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn find_common_chars(input: &String) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/boxids.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `differentChars` should have a snake case name such as `different_chars`
[INFO] [stderr]   --> src/boxids.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut differentChars: i32 = 0;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/frequency.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/boxids.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `differentChars` should have a snake case name such as `different_chars`
[INFO] [stderr]   --> src/boxids.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut differentChars: i32 = 0;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "048773e3b0acdbc5c50e65c7f8375a74c6f93c302eb7538b52275ada65f86c7a"`
[INFO] running `"docker" "rm" "-f" "048773e3b0acdbc5c50e65c7f8375a74c6f93c302eb7538b52275ada65f86c7a"`
[INFO] [stdout] 048773e3b0acdbc5c50e65c7f8375a74c6f93c302eb7538b52275ada65f86c7a