[INFO] cloning repository https://github.com/hyunmui/rust_enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hyunmui/rust_enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyunmui%2Frust_enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyunmui%2Frust_enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87350d981a97799f3b64402366fbde9fe8b47bc2
[INFO] testing hyunmui/rust_enum against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhyunmui%2Frust_enum" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hyunmui/rust_enum
[INFO] finished tweaking git repo https://github.com/hyunmui/rust_enum
[INFO] tweaked toml for git repo https://github.com/hyunmui/rust_enum written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hyunmui/rust_enum on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hyunmui/rust_enum 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bead88c916c69c18f783a9a679fd93e19a1f0ee1cef69d86e9fc5c8b2f717173
[INFO] running `Command { std: "docker" "start" "-a" "bead88c916c69c18f783a9a679fd93e19a1f0ee1cef69d86e9fc5c8b2f717173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bead88c916c69c18f783a9a679fd93e19a1f0ee1cef69d86e9fc5c8b2f717173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bead88c916c69c18f783a9a679fd93e19a1f0ee1cef69d86e9fc5c8b2f717173", kill_on_drop: false }`
[INFO] [stdout] bead88c916c69c18f783a9a679fd93e19a1f0ee1cef69d86e9fc5c8b2f717173
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8a9145755b9e685d35cd8e466ec41b00df73bdf84f47b099cf6393911faf00c
[INFO] running `Command { std: "docker" "start" "-a" "d8a9145755b9e685d35cd8e466ec41b00df73bdf84f47b099cf6393911faf00c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_enum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `macos` in `os`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     os::macos::raw::stat,
[INFO] [stdout]   |         ^^^^^ could not find `macos` in `os`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/os/mod.rs:156:7
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item is gated behind the `macos` feature
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/main.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     if let some_u8_value = Some(0u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_number`
[INFO] [stdout]   --> src/main.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let some_number = Some(5);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_string`
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let some_string = Some("a string");
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `absent_number`
[INFO] [stdout]   --> src/main.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let absent_number: Option<i32> = None;
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_u8_value`
[INFO] [stdout]    --> src/main.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     if let some_u8_value = Some(0u8) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_enum` (bin "rust_enum") due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d8a9145755b9e685d35cd8e466ec41b00df73bdf84f47b099cf6393911faf00c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a9145755b9e685d35cd8e466ec41b00df73bdf84f47b099cf6393911faf00c", kill_on_drop: false }`
[INFO] [stdout] d8a9145755b9e685d35cd8e466ec41b00df73bdf84f47b099cf6393911faf00c