[INFO] updating cached repository https://github.com/dhartunian/advent-of-code-2018
[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] 0ccb6ff4a6a92c7360daecc1e2ce0a5a940201ee
[INFO] testing dhartunian/advent-of-code-2018 against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhartunian%2Fadvent-of-code-2018" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dhartunian/advent-of-code-2018 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dhartunian/advent-of-code-2018
[INFO] finished tweaking git repo https://github.com/dhartunian/advent-of-code-2018
[INFO] tweaked toml for git repo https://github.com/dhartunian/advent-of-code-2018 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dhartunian/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9796b73935ce2803f54e276e5fb79361997abc6fa42457ae757fc5ed0bfd2bfe
[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" "9796b73935ce2803f54e276e5fb79361997abc6fa42457ae757fc5ed0bfd2bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9796b73935ce2803f54e276e5fb79361997abc6fa42457ae757fc5ed0bfd2bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9796b73935ce2803f54e276e5fb79361997abc6fa42457ae757fc5ed0bfd2bfe", kill_on_drop: false }`
[INFO] [stdout] 9796b73935ce2803f54e276e5fb79361997abc6fa42457ae757fc5ed0bfd2bfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ffa97a705e7d697f7231cae2de7246669a545c0dc89249aafb3ecca17380f4e
[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" "3ffa97a705e7d697f7231cae2de7246669a545c0dc89249aafb3ecca17380f4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `char_difference`
[INFO] [stdout]    --> src/main.rs:332:4
[INFO] [stdout]     |
[INFO] [stdout] 332 | fn char_difference(word1 : &String, word2 : &String) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_letter_counts`
[INFO] [stdout]    --> src/main.rs:372:4
[INFO] [stdout]     |
[INFO] [stdout] 372 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "3ffa97a705e7d697f7231cae2de7246669a545c0dc89249aafb3ecca17380f4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ffa97a705e7d697f7231cae2de7246669a545c0dc89249aafb3ecca17380f4e", kill_on_drop: false }`
[INFO] [stdout] 3ffa97a705e7d697f7231cae2de7246669a545c0dc89249aafb3ecca17380f4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f7e4aaf46c3a4f6d4af1d8fc7cda8781b47527e8dd44859f416f1304f02170e
[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" "6f7e4aaf46c3a4f6d4af1d8fc7cda8781b47527e8dd44859f416f1304f02170e", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `char_difference`
[INFO] [stdout]    --> src/main.rs:332:4
[INFO] [stdout]     |
[INFO] [stdout] 332 | fn char_difference(word1 : &String, word2 : &String) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_letter_counts`
[INFO] [stdout]    --> src/main.rs:372:4
[INFO] [stdout]     |
[INFO] [stdout] 372 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "6f7e4aaf46c3a4f6d4af1d8fc7cda8781b47527e8dd44859f416f1304f02170e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f7e4aaf46c3a4f6d4af1d8fc7cda8781b47527e8dd44859f416f1304f02170e", kill_on_drop: false }`
[INFO] [stdout] 6f7e4aaf46c3a4f6d4af1d8fc7cda8781b47527e8dd44859f416f1304f02170e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0efca6c0784e779b6ce2434665daa0435f5960f05bdcc442a575c925c1dcb10e
[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" "0efca6c0784e779b6ce2434665daa0435f5960f05bdcc442a575c925c1dcb10e", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `char_difference`
[INFO] [stderr]    --> src/main.rs:332:4
[INFO] [stderr]     |
[INFO] [stderr] 332 | fn char_difference(word1 : &String, word2 : &String) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_letter_counts`
[INFO] [stderr]    --> src/main.rs:372:4
[INFO] [stderr]     |
[INFO] [stderr] 372 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/advent_of_code_2018-d5df77aaadef85e2
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_length_stuff ... ok
[INFO] [stdout] test test_process_one_pass ... ok
[INFO] [stdout] test test_process_until_done ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0efca6c0784e779b6ce2434665daa0435f5960f05bdcc442a575c925c1dcb10e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0efca6c0784e779b6ce2434665daa0435f5960f05bdcc442a575c925c1dcb10e", kill_on_drop: false }`
[INFO] [stdout] 0efca6c0784e779b6ce2434665daa0435f5960f05bdcc442a575c925c1dcb10e