[INFO] fetching crate arrcat 0.1.1...
[INFO] checking arrcat-0.1.1 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393-1
[INFO] extracting crate arrcat 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate arrcat 0.1.1 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arrcat 0.1.1
[INFO] finished tweaking crates.io crate arrcat 0.1.1
[INFO] tweaked toml for crates.io crate arrcat 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded core_extensions_proc_macros v1.5.3
[INFO] [stderr]   Downloaded core_extensions v1.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a799ed9b255d9c644f0109d46daa599380306164b4ac40267b21c2b0f65f03cf
[INFO] running `Command { std: "docker" "start" "-a" "a799ed9b255d9c644f0109d46daa599380306164b4ac40267b21c2b0f65f03cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a799ed9b255d9c644f0109d46daa599380306164b4ac40267b21c2b0f65f03cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a799ed9b255d9c644f0109d46daa599380306164b4ac40267b21c2b0f65f03cf", kill_on_drop: false }`
[INFO] [stdout] a799ed9b255d9c644f0109d46daa599380306164b4ac40267b21c2b0f65f03cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6a3d640ac7b205d8edbb48a7f078888ecb7c61f04a12ff145e32b041f161375
[INFO] running `Command { std: "docker" "start" "-a" "e6a3d640ac7b205d8edbb48a7f078888ecb7c61f04a12ff145e32b041f161375", kill_on_drop: false }`
[INFO] [stderr]    Compiling core_extensions_proc_macros v1.5.3
[INFO] [stderr]     Checking arrcat v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking core_extensions v1.5.3
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/tests.rs:59:49
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let arr = concat_arrays!([f(3); 2]: ([T; 2]));
[INFO] [stdout]    |                                                 ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 59 -             let arr = concat_arrays!([f(3); 2]: ([T; 2]));
[INFO] [stdout] 59 +             let arr = concat_arrays!([f(3); 2]: [T; 2]);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "e6a3d640ac7b205d8edbb48a7f078888ecb7c61f04a12ff145e32b041f161375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a3d640ac7b205d8edbb48a7f078888ecb7c61f04a12ff145e32b041f161375", kill_on_drop: false }`
[INFO] [stdout] e6a3d640ac7b205d8edbb48a7f078888ecb7c61f04a12ff145e32b041f161375