[INFO] updating cached repository https://github.com/nrstepanek/advent-of-code-2018-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4fde8f4cbfbbe1113ef597dafa8387ff82eb9b8b
[INFO] checking nrstepanek/advent-of-code-2018-rust against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrstepanek%2Fadvent-of-code-2018-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrstepanek/advent-of-code-2018-rust on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nrstepanek/advent-of-code-2018-rust
[INFO] finished tweaking git repo https://github.com/nrstepanek/advent-of-code-2018-rust
[INFO] tweaked toml for git repo https://github.com/nrstepanek/advent-of-code-2018-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/nrstepanek/advent-of-code-2018-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a336cea09b1b3993717f0f5a18340c387728f2b64a2ecceffff9276cfe6c8639
[INFO] running `Command { std: "docker" "start" "-a" "a336cea09b1b3993717f0f5a18340c387728f2b64a2ecceffff9276cfe6c8639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a336cea09b1b3993717f0f5a18340c387728f2b64a2ecceffff9276cfe6c8639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a336cea09b1b3993717f0f5a18340c387728f2b64a2ecceffff9276cfe6c8639", kill_on_drop: false }`
[INFO] [stdout] a336cea09b1b3993717f0f5a18340c387728f2b64a2ecceffff9276cfe6c8639
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b055fc051066ce10b196cf24993250e23d318729046575ff869d6f476813c8cd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b055fc051066ce10b196cf24993250e23d318729046575ff869d6f476813c8cd", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `calculate_frequency`
[INFO] [stdout]  --> src/frequency.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn calculate_frequency(input: &String) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_duplicate_frequency`
[INFO] [stdout]   --> src/frequency.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn find_duplicate_frequency(input: &String) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/frequency.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_boxids_checksum`
[INFO] [stdout]  --> src/boxids.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn get_boxids_checksum(input: &String) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_common_chars`
[INFO] [stdout]   --> src/boxids.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn find_common_chars(input: &String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/boxids.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `differentChars` should have a snake case name
[INFO] [stdout]   --> src/boxids.rs:48:21
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut differentChars: i32 = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `different_chars`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/frequency.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/boxids.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `differentChars` should have a snake case name
[INFO] [stdout]   --> src/boxids.rs:48:21
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut differentChars: i32 = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `different_chars`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "b055fc051066ce10b196cf24993250e23d318729046575ff869d6f476813c8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b055fc051066ce10b196cf24993250e23d318729046575ff869d6f476813c8cd", kill_on_drop: false }`
[INFO] [stdout] b055fc051066ce10b196cf24993250e23d318729046575ff869d6f476813c8cd