[INFO] cloning repository https://github.com/theghostyced/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/theghostyced/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheghostyced%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheghostyced%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5fd7c9aec3fdd25088c157e354c619acff8716b
[INFO] testing theghostyced/learning-rust against beta-2025-01-12 for beta-1.85-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheghostyced%2Flearning-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theghostyced/learning-rust on toolchain beta-2025-01-12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-01-12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/theghostyced/learning-rust
[INFO] finished tweaking git repo https://github.com/theghostyced/learning-rust
[INFO] tweaked toml for git repo https://github.com/theghostyced/learning-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/theghostyced/learning-rust 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" "+beta-2025-01-12" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing theghostyced/learning-rust against beta-2025-01-12 for beta-1.85-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheghostyced%2Flearning-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theghostyced/learning-rust on toolchain beta-2025-01-12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-01-12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/theghostyced/learning-rust
[INFO] finished tweaking git repo https://github.com/theghostyced/learning-rust
[INFO] tweaked toml for git repo https://github.com/theghostyced/learning-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/theghostyced/learning-rust 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" "+beta-2025-01-12" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3c34982a43dee6fb1a654bc2e07a2e3fdbf204822dabc7e84699f24fd5555fd
[INFO] running `Command { std: "docker" "start" "-a" "a3c34982a43dee6fb1a654bc2e07a2e3fdbf204822dabc7e84699f24fd5555fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3c34982a43dee6fb1a654bc2e07a2e3fdbf204822dabc7e84699f24fd5555fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c34982a43dee6fb1a654bc2e07a2e3fdbf204822dabc7e84699f24fd5555fd", kill_on_drop: false }`
[INFO] [stdout] a3c34982a43dee6fb1a654bc2e07a2e3fdbf204822dabc7e84699f24fd5555fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51d23ce8dcb68cdfcc5631f929a7125664b235e756b56141e7ad7b02db9fd42f
[INFO] running `Command { std: "docker" "start" "-a" "51d23ce8dcb68cdfcc5631f929a7125664b235e756b56141e7ad7b02db9fd42f", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Black` is never constructed
[INFO] [stdout]  --> src/bin/a12.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Color {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 3 |     Black,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_1` is never used
[INFO] [stdout]   --> src/bin/a23.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn part_1() -> bool {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_2` is never used
[INFO] [stdout]   --> src/bin/a23.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn part_2() -> Option<Access> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_3` is never used
[INFO] [stdout]   --> src/bin/a23.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn part_3() -> Access {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Access` is never used
[INFO] [stdout]   --> src/bin/a23.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum Access {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maybe_access` is never used
[INFO] [stdout]   --> src/bin/a23.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn maybe_access(name: &str) -> Option<Access> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `root` is never used
[INFO] [stdout]   --> src/bin/a23.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn root() -> Option<Access> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `user_id` and `name` are never read
[INFO] [stdout]   --> src/bin/a21.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct User {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 13 |     user_id: i32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `User` has a derived impl for the trait `Debug`, 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: unused variable: `x`
[INFO] [stdout]  --> src/bin/a9.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (x, y) = cartesian_coordinate();
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clamp` is never used
[INFO] [stdout]   --> src/bin/a22.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn clamp(n: i32, lower: i32, upper: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div` is never used
[INFO] [stdout]   --> src/bin/a22.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn div(a: i32, b: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concat` is never used
[INFO] [stdout]   --> src/bin/a22.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn concat(first: &str, second: &str) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Maintanence`, `Marketing`, `Supervisor`, `Kitchen`, and `Assembly` are never constructed
[INFO] [stdout]  --> src/bin/a18b.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum EmployeeType {
[INFO] [stdout]   |      ------------ variants in this enum
[INFO] [stdout] 3 |     Maintanence,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     Marketing,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     Managers,
[INFO] [stdout] 6 |     Supervisor,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 7 |     Kitchen,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 8 |     Assembly
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminated` is never constructed
[INFO] [stdout]   --> src/bin/a18b.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum EmployeeStatus {
[INFO] [stdout]    |      -------------- variant in this enum
[INFO] [stdout] 12 |   Active,
[INFO] [stdout] 13 |   Terminated
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "51d23ce8dcb68cdfcc5631f929a7125664b235e756b56141e7ad7b02db9fd42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51d23ce8dcb68cdfcc5631f929a7125664b235e756b56141e7ad7b02db9fd42f", kill_on_drop: false }`
[INFO] [stdout] 51d23ce8dcb68cdfcc5631f929a7125664b235e756b56141e7ad7b02db9fd42f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 011095cd58ee99bafa0e53feb96014b68dc3473950bcf0ba42169acd0969b381
[INFO] running `Command { std: "docker" "start" "-a" "011095cd58ee99bafa0e53feb96014b68dc3473950bcf0ba42169acd0969b381", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `user_id` and `name` are never read
[INFO] [stdout]   --> src/bin/a21.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct User {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 13 |     user_id: i32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 14 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `User` has a derived impl for the trait `Debug`, 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: unused variable: `x`
[INFO] [stdout]  --> src/bin/a9.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (x, y) = cartesian_coordinate();
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Maintanence`, `Marketing`, `Supervisor`, `Kitchen`, and `Assembly` are never constructed
[INFO] [stdout]  --> src/bin/a18b.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum EmployeeType {
[INFO] [stdout]   |      ------------ variants in this enum
[INFO] [stdout] 3 |     Maintanence,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     Marketing,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     Managers,
[INFO] [stdout] 6 |     Supervisor,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 7 |     Kitchen,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 8 |     Assembly
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminated` is never constructed
[INFO] [stdout]   --> src/bin/a18b.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum EmployeeStatus {
[INFO] [stdout]    |      -------------- variant in this enum
[INFO] [stdout] 12 |   Active,
[INFO] [stdout] 13 |   Terminated
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Black` is never constructed
[INFO] [stdout]  --> src/bin/a12.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Color {
[INFO] [stdout]   |      ----- variant in this enum
[INFO] [stdout] 3 |     Black,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "011095cd58ee99bafa0e53feb96014b68dc3473950bcf0ba42169acd0969b381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011095cd58ee99bafa0e53feb96014b68dc3473950bcf0ba42169acd0969b381", kill_on_drop: false }`
[INFO] [stdout] 011095cd58ee99bafa0e53feb96014b68dc3473950bcf0ba42169acd0969b381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-01-12" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1b4dcc9457f7ea60ea149fe2b31453d9acfa3dd078e61c74731abe94ea1cb983
[INFO] running `Command { std: "docker" "start" "-a" "1b4dcc9457f7ea60ea149fe2b31453d9acfa3dd078e61c74731abe94ea1cb983", kill_on_drop: false }`
[INFO] [stderr] warning: variants `Maintanence`, `Marketing`, `Supervisor`, `Kitchen`, and `Assembly` are never constructed
[INFO] [stderr]  --> src/bin/a18b.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum EmployeeType {
[INFO] [stderr]   |      ------------ variants in this enum
[INFO] [stderr] 3 |     Maintanence,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 4 |     Marketing,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 5 |     Managers,
[INFO] [stderr] 6 |     Supervisor,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 7 |     Kitchen,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 8 |     Assembly
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Terminated` is never constructed
[INFO] [stderr]   --> src/bin/a18b.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 11 | enum EmployeeStatus {
[INFO] [stderr]    |      -------------- variant in this enum
[INFO] [stderr] 12 |   Active,
[INFO] [stderr] 13 |   Terminated
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-rust` (bin "a18b" test) generated 2 warnings
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/bin/a9.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let (x, y) = cartesian_coordinate();
[INFO] [stderr]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Black` is never constructed
[INFO] [stderr]  --> src/bin/a12.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum Color {
[INFO] [stderr]   |      ----- variant in this enum
[INFO] [stderr] 3 |     Black,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-rust` (bin "a9" test) generated 1 warning
[INFO] [stderr] warning: `learning-rust` (bin "a12" test) generated 1 warning
[INFO] [stderr] warning: fields `user_id` and `name` are never read
[INFO] [stderr]   --> src/bin/a21.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct User {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 13 |     user_id: i32,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 14 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-rust` (bin "a21" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/activitylib.rs (/opt/rustwide/target/debug/deps/activity-87cc42f67a1663d9)
[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] [stderr]      Running unittests src/bin/a1.rs (/opt/rustwide/target/debug/deps/a1-6fc5c07b2a6156a9)
[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] [stderr]      Running unittests src/bin/a11.rs (/opt/rustwide/target/debug/deps/a11-e160248dfcd3d6f0)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a12.rs (/opt/rustwide/target/debug/deps/a12-76ad1adf8758bf8d)
[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 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a13.rs (/opt/rustwide/target/debug/deps/a13-6fac805c3bbdbe16)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a15.rs (/opt/rustwide/target/debug/deps/a15-0df2602eed981490)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a16.rs (/opt/rustwide/target/debug/deps/a16-6d763e96d24abfba)
[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 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 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] [stderr]      Running unittests src/bin/a17.rs (/opt/rustwide/target/debug/deps/a17-e6d5aa0597fc6ae0)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/a18.rs (/opt/rustwide/target/debug/deps/a18-35134ae297829b25)
[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 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] [stderr]      Running unittests src/bin/a18b.rs (/opt/rustwide/target/debug/deps/a18b-ffce5f787951c6cf)
[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] [stderr]      Running unittests src/bin/a19.rs (/opt/rustwide/target/debug/deps/a19-f210c5fa1bffd2ca)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/a2.rs (/opt/rustwide/target/debug/deps/a2-1b71077443a8c6fd)
[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 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] [stderr]      Running unittests src/bin/a21.rs (/opt/rustwide/target/debug/deps/a21-208f2877daa01776)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/a22.rs (/opt/rustwide/target/debug/deps/a22-cb46b0770acc9f0e)
[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 5 tests
[INFO] [stdout] test test::clamp_lower ... ok
[INFO] [stdout] test test::clamp_upper ... ok
[INFO] [stdout] test test::divide ... ok
[INFO] [stdout] test test::divide_zero ... ok
[INFO] [stdout] test test::concat_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a23.rs (/opt/rustwide/target/debug/deps/a23-7426dc34f362771f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::check_part_2 ... ok
[INFO] [stdout] test test::check_part_1 ... ok
[INFO] [stdout] test test::check_part_3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a24.rs (/opt/rustwide/target/debug/deps/a24-af5c0a42f12af40e)
[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] [stderr]      Running unittests src/bin/a26b.rs (/opt/rustwide/target/debug/deps/a26b-e7d1351acf9a539f)
[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] [stderr]      Running unittests src/bin/a26c.rs (/opt/rustwide/target/debug/deps/a26c-f8c1f3ad663d9047)
[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] [stderr]      Running unittests src/bin/a3a.rs (/opt/rustwide/target/debug/deps/a3a-9a64ca363492a47f)
[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] [stderr]      Running unittests src/bin/a3b.rs (/opt/rustwide/target/debug/deps/a3b-1a22afbc07e87ee9)
[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] [stderr]      Running unittests src/bin/a4a.rs (/opt/rustwide/target/debug/deps/a4a-f9c9af7ee3bde363)
[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] [stderr]      Running unittests src/bin/a4b.rs (/opt/rustwide/target/debug/deps/a4b-10463f7c031268be)
[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] [stderr]      Running unittests src/bin/a5.rs (/opt/rustwide/target/debug/deps/a5-d1f50eea29def710)
[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] [stderr]      Running unittests src/bin/a6.rs (/opt/rustwide/target/debug/deps/a6-d1ab0b00b86a14aa)
[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] [stdout] 
[INFO] [stderr]      Running unittests src/bin/a7.rs (/opt/rustwide/target/debug/deps/a7-90a5d1fbc5aa1fab)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/a8.rs (/opt/rustwide/target/debug/deps/a8-9c8ba3826a7d8bf5)
[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 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] [stderr]      Running unittests src/bin/a9.rs (/opt/rustwide/target/debug/deps/a9-e56c31bf0b792a2e)
[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] [stderr]      Running unittests main.rs (/opt/rustwide/target/debug/deps/learning_rust-513e757d5189d64e)
[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] [stderr]    Doc-tests activity
[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" "1b4dcc9457f7ea60ea149fe2b31453d9acfa3dd078e61c74731abe94ea1cb983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b4dcc9457f7ea60ea149fe2b31453d9acfa3dd078e61c74731abe94ea1cb983", kill_on_drop: false }`
[INFO] [stdout] 1b4dcc9457f7ea60ea149fe2b31453d9acfa3dd078e61c74731abe94ea1cb983