[INFO] cloning repository https://github.com/vangroan/grok-mlua
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vangroan/grok-mlua" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvangroan%2Fgrok-mlua", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvangroan%2Fgrok-mlua'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 639eb09624d4c1db445336cc26a75baedace67d2
[INFO] checking vangroan/grok-mlua against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvangroan%2Fgrok-mlua" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vangroan/grok-mlua on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vangroan/grok-mlua
[INFO] finished tweaking git repo https://github.com/vangroan/grok-mlua
[INFO] tweaked toml for git repo https://github.com/vangroan/grok-mlua written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vangroan/grok-mlua 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mlua v0.8.2
[INFO] [stderr]   Downloaded lua-src v544.0.1
[INFO] [stderr]   Downloaded luajit-src v210.4.1+restyaa7a722
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2687a9f52d7e45c72ea9058c2d76ba1de38a09faec0b8a11e1473db0096f30fe
[INFO] running `Command { std: "docker" "start" "-a" "2687a9f52d7e45c72ea9058c2d76ba1de38a09faec0b8a11e1473db0096f30fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2687a9f52d7e45c72ea9058c2d76ba1de38a09faec0b8a11e1473db0096f30fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2687a9f52d7e45c72ea9058c2d76ba1de38a09faec0b8a11e1473db0096f30fe", kill_on_drop: false }`
[INFO] [stdout] 2687a9f52d7e45c72ea9058c2d76ba1de38a09faec0b8a11e1473db0096f30fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5a35e7dd9838e0913705a89bd567836d95d92e886c4df94eb0046f95e0af1ca
[INFO] running `Command { std: "docker" "start" "-a" "f5a35e7dd9838e0913705a89bd567836d95d92e886c4df94eb0046f95e0af1ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking num-traits v0.2.15
[INFO] [stderr]    Compiling luajit-src v210.4.1+restyaa7a722
[INFO] [stderr]    Compiling lua-src v544.0.1
[INFO] [stderr]    Compiling cgmath v0.18.0
[INFO] [stderr]    Compiling mlua v0.8.2
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking hello-mlua v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `LuaOptions` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use mlua::{prelude::*, LuaOptions, StdLib};
[INFO] [stdout]   |            ----------  ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            the item `LuaOptions` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `LuaOptions` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use mlua::{prelude::*, LuaOptions, StdLib};
[INFO] [stdout]   |            ----------  ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            the item `LuaOptions` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.85s
[INFO] running `Command { std: "docker" "inspect" "f5a35e7dd9838e0913705a89bd567836d95d92e886c4df94eb0046f95e0af1ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a35e7dd9838e0913705a89bd567836d95d92e886c4df94eb0046f95e0af1ca", kill_on_drop: false }`
[INFO] [stdout] f5a35e7dd9838e0913705a89bd567836d95d92e886c4df94eb0046f95e0af1ca