[INFO] fetching crate cmd_wrk_macros 0.0.1...
[INFO] testing cmd_wrk_macros-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate cmd_wrk_macros 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cmd_wrk_macros 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cmd_wrk_macros 0.0.1
[INFO] finished tweaking crates.io crate cmd_wrk_macros 0.0.1
[INFO] tweaked toml for crates.io crate cmd_wrk_macros 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d4cbf82a99ac20d36092d11a7a7278cdfc59dbe6e005d8269dd58b88e18a4d40
[INFO] running `Command { std: "docker" "start" "-a" "d4cbf82a99ac20d36092d11a7a7278cdfc59dbe6e005d8269dd58b88e18a4d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4cbf82a99ac20d36092d11a7a7278cdfc59dbe6e005d8269dd58b88e18a4d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4cbf82a99ac20d36092d11a7a7278cdfc59dbe6e005d8269dd58b88e18a4d40", kill_on_drop: false }`
[INFO] [stdout] d4cbf82a99ac20d36092d11a7a7278cdfc59dbe6e005d8269dd58b88e18a4d40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 016bf41b18b849d2533dcb132386decf5868d3d2500428a90b4a81e8cef85e2f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "016bf41b18b849d2533dcb132386decf5868d3d2500428a90b4a81e8cef85e2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cmd_wrk_macros v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `proc-macro` crate types currently cannot export any items other than functions tagged with `#[proc_macro]`, `#[proc_macro_derive]`, or `#[proc_macro_attribute]`
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn cli(args: TokenStream, input: TokenStream) -> TokenStream {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/lib.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::export::ToTokens;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PatIdent`
[INFO] [stdout]  --> src/lib.rs:2:85
[INFO] [stdout]   |
[INFO] [stdout] 2 | use syn::{parse_macro_input, Ident, Item, FnArg, Type, ItemFn, Visibility, PatType, PatIdent};
[INFO] [stdout]   |                                                                                     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::token::Token`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ParseBuffer`, `ParseStream`, `Parse`
[INFO] [stdout]  --> src/lib.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use syn::parse::{Parse, ParseBuffer, ParseStream};
[INFO] [stdout]   |                  ^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryFrom`, `TryInto`
[INFO] [stdout]  --> src/lib.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cmd_wrk_macros` due to 3 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "016bf41b18b849d2533dcb132386decf5868d3d2500428a90b4a81e8cef85e2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016bf41b18b849d2533dcb132386decf5868d3d2500428a90b4a81e8cef85e2f", kill_on_drop: false }`
[INFO] [stdout] 016bf41b18b849d2533dcb132386decf5868d3d2500428a90b4a81e8cef85e2f