[INFO] updating cached repository https://github.com/nrstepanek/advent-of-code-2018-rust
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4fde8f4cbfbbe1113ef597dafa8387ff82eb9b8b
[INFO] testing nrstepanek/advent-of-code-2018-rust against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrstepanek%2Fadvent-of-code-2018-rust" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrstepanek/advent-of-code-2018-rust on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/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 `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ccd00e3ea4a4a3a285a9fb6151a930cb02050ebf83e8dea2ff1236eb9eb29c11
[INFO] running `"docker" "start" "-a" "ccd00e3ea4a4a3a285a9fb6151a930cb02050ebf83e8dea2ff1236eb9eb29c11"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `calculate_frequency`
[INFO] [stderr]  --> src/frequency.rs:4:4
[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:24:4
[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:55:8
[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:5:4
[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:36:4
[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:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn main() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `differentChars` should have a snake case name
[INFO] [stderr]   --> src/boxids.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut differentChars: i32 = 0;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `different_chars`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "ccd00e3ea4a4a3a285a9fb6151a930cb02050ebf83e8dea2ff1236eb9eb29c11"`
[INFO] running `"docker" "rm" "-f" "ccd00e3ea4a4a3a285a9fb6151a930cb02050ebf83e8dea2ff1236eb9eb29c11"`
[INFO] [stdout] ccd00e3ea4a4a3a285a9fb6151a930cb02050ebf83e8dea2ff1236eb9eb29c11
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c71d80e5149120ce2f0584fd9c942480db029b2c423e5f80b2e3c3881f9eaa92
[INFO] running `"docker" "start" "-a" "c71d80e5149120ce2f0584fd9c942480db029b2c423e5f80b2e3c3881f9eaa92"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/frequency.rs:55:8
[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:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn main() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `differentChars` should have a snake case name
[INFO] [stderr]   --> src/boxids.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut differentChars: i32 = 0;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `different_chars`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "c71d80e5149120ce2f0584fd9c942480db029b2c423e5f80b2e3c3881f9eaa92"`
[INFO] running `"docker" "rm" "-f" "c71d80e5149120ce2f0584fd9c942480db029b2c423e5f80b2e3c3881f9eaa92"`
[INFO] [stdout] c71d80e5149120ce2f0584fd9c942480db029b2c423e5f80b2e3c3881f9eaa92
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1c6057a0a184ee1bfd7a445131119df071dbc7bf24ccddcf44161ea2976c51fd
[INFO] running `"docker" "start" "-a" "1c6057a0a184ee1bfd7a445131119df071dbc7bf24ccddcf44161ea2976c51fd"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/frequency.rs:55:8
[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:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn main() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `differentChars` should have a snake case name
[INFO] [stderr]   --> src/boxids.rs:48:21
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut differentChars: i32 = 0;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `different_chars`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/advent_of_code_2018-5b4549c976f49fdf
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test frequency::tests::calculate_frequency_test ... ok
[INFO] [stdout] test frequency::tests::find_duplicate_frequency_test ... ok
[INFO] [stdout] test boxids::tests::find_common_chars_test ... ok
[INFO] [stdout] test boxids::tests::get_boxids_checksum_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1c6057a0a184ee1bfd7a445131119df071dbc7bf24ccddcf44161ea2976c51fd"`
[INFO] running `"docker" "rm" "-f" "1c6057a0a184ee1bfd7a445131119df071dbc7bf24ccddcf44161ea2976c51fd"`
[INFO] [stdout] 1c6057a0a184ee1bfd7a445131119df071dbc7bf24ccddcf44161ea2976c51fd