[INFO] cloning repository https://github.com/khairulharu/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khairulharu/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhairulharu%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhairulharu%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a510210683734a8841feec6d99a40461ec14fd9
[INFO] checking khairulharu/rust against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhairulharu%2Frust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/khairulharu/rust
[INFO] finished tweaking git repo https://github.com/khairulharu/rust
[INFO] tweaked toml for git repo https://github.com/khairulharu/rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/khairulharu/rust on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/khairulharu/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ee61fb750768b1897b0ce75342fbfa42d7e62029ddce890a959dff4aace189f
[INFO] running `Command { std: "docker" "start" "-a" "5ee61fb750768b1897b0ce75342fbfa42d7e62029ddce890a959dff4aace189f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ee61fb750768b1897b0ce75342fbfa42d7e62029ddce890a959dff4aace189f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ee61fb750768b1897b0ce75342fbfa42d7e62029ddce890a959dff4aace189f", kill_on_drop: false }`
[INFO] [stdout] 5ee61fb750768b1897b0ce75342fbfa42d7e62029ddce890a959dff4aace189f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b058f79899ce89c92937bbeabf75e90f37bbf52abde7aa2e46b2ea3aad522d76
[INFO] running `Command { std: "docker" "start" "-a" "b058f79899ce89c92937bbeabf75e90f37bbf52abde7aa2e46b2ea3aad522d76", kill_on_drop: false }`
[INFO] [stderr]     Checking belajar-rust-dasar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `five` is never used
[INFO] [stdout]    --> src/main.rs:276:4
[INFO] [stdout]     |
[INFO] [stdout] 276 | fn five() -> i32 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]    --> src/main.rs:280:4
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn plus_one(x: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unit` is never used
[INFO] [stdout]    --> src/main.rs:453:4
[INFO] [stdout]     |
[INFO] [stdout] 453 | fn unit() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THIS_IS_A_CONST` is never used
[INFO] [stdout]    --> src/main.rs:493:7
[INFO] [stdout]     |
[INFO] [stdout] 493 | const THIS_IS_A_CONST: bool = true;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_a` is never used
[INFO] [stdout]    --> src/main.rs:528:4
[INFO] [stdout]     |
[INFO] [stdout] 528 | fn function_a() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_b` is never used
[INFO] [stdout]    --> src/main.rs:535:4
[INFO] [stdout]     |
[INFO] [stdout] 535 | fn function_b() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:427:31
[INFO] [stdout]     |
[INFO] [stdout] 427 |     let nano_prison: String = nano_prison.trim().parse().expect("Only string");
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `belajar-rust-dasar` (bin "belajar-rust-dasar" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b058f79899ce89c92937bbeabf75e90f37bbf52abde7aa2e46b2ea3aad522d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b058f79899ce89c92937bbeabf75e90f37bbf52abde7aa2e46b2ea3aad522d76", kill_on_drop: false }`
[INFO] [stdout] b058f79899ce89c92937bbeabf75e90f37bbf52abde7aa2e46b2ea3aad522d76