[INFO] cloning repository https://github.com/iagombermudez/rust_book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iagombermudez/rust_book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiagombermudez%2Frust_book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiagombermudez%2Frust_book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07c9cf28f330cd27a97d914502ceea4122ce2272
[INFO] testing iagombermudez/rust_book against 1.98.0-beta.8+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiagombermudez%2Frust_book" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/iagombermudez/rust_book
[INFO] finished tweaking git repo https://github.com/iagombermudez/rust_book
[INFO] tweaked toml for git repo https://github.com/iagombermudez/rust_book written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iagombermudez/rust_book on toolchain 1.98.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/iagombermudez/rust_book 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" "+1.98.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e
[INFO] running `Command { std: "docker" "start" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Example` is never constructed
[INFO] [stdout]  --> src/bin/6_enums.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Example {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/bin/6_enums.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum UsState {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `existed_in` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl UsState {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn existed_in(&self, year: u16) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Coin {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `describe_state__quarter` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn describe_state__quarter(coin: Coin) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `describe_state__quarter` should have a snake case name
[INFO] [stdout]   --> src/bin/6_enums.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn describe_state__quarter(coin: Coin) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `describe_state_quarter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Example` is never constructed
[INFO] [stdout]  --> src/bin/6_enums.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Example {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/bin/6_enums.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum UsState {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `existed_in` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl UsState {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn existed_in(&self, year: u16) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Coin {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `describe_state__quarter` is never used
[INFO] [stdout]   --> src/bin/6_enums.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn describe_state__quarter(coin: Coin) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `describe_state__quarter` should have a snake case name
[INFO] [stdout]   --> src/bin/6_enums.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn describe_state__quarter(coin: Coin) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `describe_state_quarter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Example` is never constructed
[INFO] [stderr]  --> src/bin/6_enums.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Example {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddr` is never used
[INFO] [stderr]  --> src/bin/6_enums.rs:4:6
[INFO] [stderr]   |
[INFO] [stderr] 4 | enum IpAddr {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `UsState` is never used
[INFO] [stderr]   --> src/bin/6_enums.rs:10:6
[INFO] [stderr]    |
[INFO] [stderr] 10 | enum UsState {
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `existed_in` is never used
[INFO] [stderr]   --> src/bin/6_enums.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl UsState {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 17 |     fn existed_in(&self, year: u16) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]   --> src/bin/6_enums.rs:26:6
[INFO] [stderr]    |
[INFO] [stderr] 26 | enum Coin {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `describe_state__quarter` is never used
[INFO] [stderr]   --> src/bin/6_enums.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn describe_state__quarter(coin: Coin) -> Option<String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `describe_state__quarter` should have a snake case name
[INFO] [stderr]   --> src/bin/6_enums.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn describe_state__quarter(coin: Coin) -> Option<String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `describe_state_quarter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_book` (bin "6_enums" test) generated 7 warnings
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/bin/5_rectangles.rs (/opt/rustwide/target/release/deps/5_rectangles-27d9fe21e1be0b92)
[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/6_enums.rs (/opt/rustwide/target/release/deps/6_enums-f41ddb092cb5044c)
[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/8_exercises.rs (/opt/rustwide/target/release/deps/8_exercises-8b294dcdc5e0e5d0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/find_first_word.rs (/opt/rustwide/target/release/deps/find_first_word-8208878e5bff5259)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/rust_book-548c6feb7eb503a1)
[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] running `Command { std: "docker" "inspect" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e", kill_on_drop: false }`
[INFO] [stdout] 1894fd9a76bc0e2dfb1ed9e2681cbd1b08abbda7c494fc8b11d1d146be6ecb9e