[INFO] fetching crate core_extensions_proc_macros 1.5.1...
[INFO] checking core_extensions_proc_macros-1.5.1 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate core_extensions_proc_macros 1.5.1 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate core_extensions_proc_macros 1.5.1 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core_extensions_proc_macros 1.5.1
[INFO] finished tweaking crates.io crate core_extensions_proc_macros 1.5.1
[INFO] tweaked toml for crates.io crate core_extensions_proc_macros 1.5.1 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 257192644cfcfd67bd5cb17b82b0573e8967d4f55955cbe2261f1a4fb79b2f08
[INFO] running `Command { std: "docker" "start" "-a" "257192644cfcfd67bd5cb17b82b0573e8967d4f55955cbe2261f1a4fb79b2f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "257192644cfcfd67bd5cb17b82b0573e8967d4f55955cbe2261f1a4fb79b2f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "257192644cfcfd67bd5cb17b82b0573e8967d4f55955cbe2261f1a4fb79b2f08", kill_on_drop: false }`
[INFO] [stdout] 257192644cfcfd67bd5cb17b82b0573e8967d4f55955cbe2261f1a4fb79b2f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae841bd769e73af6602a0ace0407694d0473097d9459f9322a4866617f4c3721
[INFO] running `Command { std: "docker" "start" "-a" "ae841bd769e73af6602a0ace0407694d0473097d9459f9322a4866617f4c3721", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking core_extensions_proc_macros v1.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proc-macro2 v1.0.30
[INFO] [stdout] warning: unused imports: `String`, `ToString`
[INFO] [stdout]  --> src/tests.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                     ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_try_proc`
[INFO] [stdout]   --> src/test_utils.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub(crate) fn test_try_proc(
[INFO] [stdout]    |               ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `format_res`
[INFO] [stdout]   --> src/test_utils.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn format_res(res: &Result<String, String>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_both`
[INFO] [stdout]   --> src/test_utils.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn map_both<T, U, F>(res: Result<T, T>, func: F) -> Result<U, U>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "ae841bd769e73af6602a0ace0407694d0473097d9459f9322a4866617f4c3721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae841bd769e73af6602a0ace0407694d0473097d9459f9322a4866617f4c3721", kill_on_drop: false }`
[INFO] [stdout] ae841bd769e73af6602a0ace0407694d0473097d9459f9322a4866617f4c3721
