[INFO] fetching crate meshvox 0.2.3...
[INFO] checking meshvox-0.2.3 against master#d2e8ecd8bd26a22111cdebfb813258450b07fbf0 for pr-121199
[INFO] extracting crate meshvox 0.2.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate meshvox 0.2.3 on toolchain d2e8ecd8bd26a22111cdebfb813258450b07fbf0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2e8ecd8bd26a22111cdebfb813258450b07fbf0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate meshvox 0.2.3
[INFO] finished tweaking crates.io crate meshvox 0.2.3
[INFO] tweaked toml for crates.io crate meshvox 0.2.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate meshvox 0.2.3 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" "+d2e8ecd8bd26a22111cdebfb813258450b07fbf0" "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
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking meshvox-0.2.3 against try#aface909a877127f24c62858518cef2d593e2ea1 for pr-121199
[INFO] extracting crate meshvox 0.2.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate meshvox 0.2.3 on toolchain aface909a877127f24c62858518cef2d593e2ea1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aface909a877127f24c62858518cef2d593e2ea1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate meshvox 0.2.3
[INFO] finished tweaking crates.io crate meshvox 0.2.3
[INFO] tweaked toml for crates.io crate meshvox 0.2.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate meshvox 0.2.3 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" "+aface909a877127f24c62858518cef2d593e2ea1" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aface909a877127f24c62858518cef2d593e2ea1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fd6bf2f46c82832017ebf87228afc8be37ff1d86e79208b4a01328e1c63abdd
[INFO] running `Command { std: "docker" "start" "-a" "5fd6bf2f46c82832017ebf87228afc8be37ff1d86e79208b4a01328e1c63abdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fd6bf2f46c82832017ebf87228afc8be37ff1d86e79208b4a01328e1c63abdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd6bf2f46c82832017ebf87228afc8be37ff1d86e79208b4a01328e1c63abdd", kill_on_drop: false }`
[INFO] [stdout] 5fd6bf2f46c82832017ebf87228afc8be37ff1d86e79208b4a01328e1c63abdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+aface909a877127f24c62858518cef2d593e2ea1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3cb6b1ab77f26c85a9ffb82a5508be8b10fa97c4a7468bbdc302356e4e6ea26
[INFO] running `Command { std: "docker" "start" "-a" "a3cb6b1ab77f26c85a9ffb82a5508be8b10fa97c4a7468bbdc302356e4e6ea26", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking meshvox v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/pyramid.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 | /         writeln!(
[INFO] [stdout] 34 | |             file,
[INFO] [stdout] 35 | |             "v {:0.6} {:0.6} {:0.6}",
[INFO] [stdout] 36 | |             vertex[0], vertex[1], vertex[2]
[INFO] [stdout] 37 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/pyramid.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         writeln!(file, "f {} {} {}", index + 1, index + 2, index + 3);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "a3cb6b1ab77f26c85a9ffb82a5508be8b10fa97c4a7468bbdc302356e4e6ea26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3cb6b1ab77f26c85a9ffb82a5508be8b10fa97c4a7468bbdc302356e4e6ea26", kill_on_drop: false }`
[INFO] [stdout] a3cb6b1ab77f26c85a9ffb82a5508be8b10fa97c4a7468bbdc302356e4e6ea26