[INFO] cloning repository https://github.com/gpwclark/learnrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gpwclark/learnrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgpwclark%2Flearnrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgpwclark%2Flearnrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc02c9b4e669a3865709ba3108457a9e86a8df2b
[INFO] testing gpwclark/learnrust against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgpwclark%2Flearnrust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gpwclark/learnrust on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gpwclark/learnrust
[INFO] finished tweaking git repo https://github.com/gpwclark/learnrust
[INFO] tweaked toml for git repo https://github.com/gpwclark/learnrust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/gpwclark/learnrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2343b36819ae3d7b560fd1093ff438e65032b44c39c28fd83bf202b09f9920f2
[INFO] running `Command { std: "docker" "start" "-a" "2343b36819ae3d7b560fd1093ff438e65032b44c39c28fd83bf202b09f9920f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2343b36819ae3d7b560fd1093ff438e65032b44c39c28fd83bf202b09f9920f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2343b36819ae3d7b560fd1093ff438e65032b44c39c28fd83bf202b09f9920f2", kill_on_drop: false }`
[INFO] [stdout] 2343b36819ae3d7b560fd1093ff438e65032b44c39c28fd83bf202b09f9920f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f191eb5e4bfdc44c5b1423c45574a95923551b3cba3c601956cb60912ca3a771
[INFO] running `Command { std: "docker" "start" "-a" "f191eb5e4bfdc44c5b1423c45574a95923551b3cba3c601956cb60912ca3a771", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling directories v0.10.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling enum-display-derive v0.1.1
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling confy v0.3.1
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/advent_of_code/mod.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 55 |         pub fn new(line: &str) -> Option<Password> {
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `make_password`
[INFO] [stdout]   --> src/advent_of_code/mod.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |         fn make_password(line: &str) -> Option<Password> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid_new`
[INFO] [stdout]   --> src/advent_of_code/mod.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         pub fn is_valid_new(&self) -> bool {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |         pub fn is_valid(&self) -> bool {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_puzzle_1`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:205:12
[INFO] [stdout]     |
[INFO] [stdout] 205 |     pub fn solve_puzzle_1() -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_puzzle_2`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:217:12
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn solve_puzzle_2() -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:242:16
[INFO] [stdout]     |
[INFO] [stdout] 242 |         pub fn new(arr: Vec<u8>) -> CircArr {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:248:16
[INFO] [stdout]     |
[INFO] [stdout] 248 |         pub fn get(&self, idx: usize) -> u8 {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_puzzle_1`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:278:12
[INFO] [stdout]     |
[INFO] [stdout] 278 |     pub fn solve_puzzle_1() -> u32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_puzzle_2`
[INFO] [stdout]    --> src/advent_of_code/mod.rs:300:12
[INFO] [stdout]     |
[INFO] [stdout] 300 |     pub fn solve_puzzle_2() {}
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.84s
[INFO] running `Command { std: "docker" "inspect" "f191eb5e4bfdc44c5b1423c45574a95923551b3cba3c601956cb60912ca3a771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f191eb5e4bfdc44c5b1423c45574a95923551b3cba3c601956cb60912ca3a771", kill_on_drop: false }`
[INFO] [stdout] f191eb5e4bfdc44c5b1423c45574a95923551b3cba3c601956cb60912ca3a771
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e10248122eea98d910705bbd6a7856adbf092ad813306c7885ebe828d9bfee23
[INFO] running `Command { std: "docker" "start" "-a" "e10248122eea98d910705bbd6a7856adbf092ad813306c7885ebe828d9bfee23", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "e10248122eea98d910705bbd6a7856adbf092ad813306c7885ebe828d9bfee23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e10248122eea98d910705bbd6a7856adbf092ad813306c7885ebe828d9bfee23", kill_on_drop: false }`
[INFO] [stdout] e10248122eea98d910705bbd6a7856adbf092ad813306c7885ebe828d9bfee23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9e95fa335cb7299ed7217e0d183dee04464487fc6d356162a069818ef32e9ba9
[INFO] running `Command { std: "docker" "start" "-a" "9e95fa335cb7299ed7217e0d183dee04464487fc6d356162a069818ef32e9ba9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-a4cfc0d878c48e12)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-5dad3ff2768b9460)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test advent_of_code::accounting::tests::pass_closure ... ok
[INFO] [stdout] test advent_of_code::tests::test_infini_arr ... ok
[INFO] [stdout] test advent_of_code::tests::test_matching ... ok
[INFO] [stdout] test advent_of_code::tests::test_sqrt ... ok
[INFO] [stdout] test advent_of_code::tests::test_usze ... ok
[INFO] [stdout] test advent_of_code::accounting::tests::test_password_line_parse ... ok
[INFO] [stdout] test advent_of_code::tests::solve_aoc3 ... ok
[INFO] [stdout] test advent_of_code::accounting::tests::test_bad_password_line_parse - should panic ... ok
[INFO] [stdout] test advent_of_code::tests::solve_aoc1 ... ok
[INFO] [stdout] test advent_of_code::tests::solve_aoc2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.64s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests learn
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9e95fa335cb7299ed7217e0d183dee04464487fc6d356162a069818ef32e9ba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e95fa335cb7299ed7217e0d183dee04464487fc6d356162a069818ef32e9ba9", kill_on_drop: false }`
[INFO] [stdout] 9e95fa335cb7299ed7217e0d183dee04464487fc6d356162a069818ef32e9ba9