[INFO] cloning repository https://github.com/mikebelanger/rustlings_answers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikebelanger/rustlings_answers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikebelanger%2Frustlings_answers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikebelanger%2Frustlings_answers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 651fced175afc4967d720d4969082eb2716559f9
[INFO] checking mikebelanger/rustlings_answers against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikebelanger%2Frustlings_answers" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikebelanger/rustlings_answers on toolchain 75530e9f72a1990ed2305e16fd51d02f47048f12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mikebelanger/rustlings_answers
[INFO] finished tweaking git repo https://github.com/mikebelanger/rustlings_answers
[INFO] tweaked toml for git repo https://github.com/mikebelanger/rustlings_answers written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mikebelanger/rustlings_answers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fcff4462e565963b7f88efe3a9a5695c17f4c4b80ea41e73812c4a5732d115d
[INFO] running `Command { std: "docker" "start" "-a" "5fcff4462e565963b7f88efe3a9a5695c17f4c4b80ea41e73812c4a5732d115d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fcff4462e565963b7f88efe3a9a5695c17f4c4b80ea41e73812c4a5732d115d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fcff4462e565963b7f88efe3a9a5695c17f4c4b80ea41e73812c4a5732d115d", kill_on_drop: false }`
[INFO] [stdout] 5fcff4462e565963b7f88efe3a9a5695c17f4c4b80ea41e73812c4a5732d115d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 367541bd82e26e3fc60caee7dd40910801b59778ec605cb2c624a77a47ef1df9
[INFO] running `Command { std: "docker" "start" "-a" "367541bd82e26e3fc60caee7dd40910801b59778ec605cb2c624a77a47ef1df9", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read `exercises/00_intro/intro1.rs`: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read `exercises/03_if/if2.rs`: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "if2") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: couldn't read `exercises/10_modules/modules3.rs`: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "modules3" test) due to 1 previous error
[INFO] [stderr] error: could not compile `exercises` (bin "intro1") due to 1 previous error
[INFO] [stdout] warning: struct `Team` is never constructed
[INFO] [stdout]   --> solutions/11_hashmaps/hashmaps3.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Team {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Team` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_scores_table` is never used
[INFO] [stdout]   --> solutions/11_hashmaps/hashmaps3.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn build_scores_table(results: &str) -> HashMap<&str, Team> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `power_of_2` is never used
[INFO] [stdout]  --> solutions/17_tests/tests2.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn power_of_2(n: u8) -> u64 {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read `exercises/08_enums/enums3.rs`: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "enums3" test) due to 1 previous error
[INFO] [stdout] error: couldn't read `exercises/07_structs/structs3.rs`: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "structs3") due to 1 previous error
[INFO] [stdout] warning: enum `Command` is never used
[INFO] [stdout]   --> solutions/quizzes/quiz2.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum Command {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transformer` is never used
[INFO] [stdout]   --> solutions/quizzes/quiz2.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn transformer(input: Vec<(String, Command)>) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transformer_iter` is never used
[INFO] [stdout]   --> solutions/quizzes/quiz2.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn transformer_iter(input: Vec<(String, Command)>) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Package` is never constructed
[INFO] [stdout]  --> solutions/07_structs/structs3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Package {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_international`, and `get_fees` are never used
[INFO] [stdout]   --> solutions/07_structs/structs3.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Package {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 9  |     fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn is_international(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn get_fees(&self, cents_per_gram: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "367541bd82e26e3fc60caee7dd40910801b59778ec605cb2c624a77a47ef1df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "367541bd82e26e3fc60caee7dd40910801b59778ec605cb2c624a77a47ef1df9", kill_on_drop: false }`
[INFO] [stdout] 367541bd82e26e3fc60caee7dd40910801b59778ec605cb2c624a77a47ef1df9