[INFO] fetching crate rslua 0.2.6...
[INFO] checking rslua-0.2.6 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate rslua 0.2.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rslua 0.2.6 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rslua 0.2.6
[INFO] finished tweaking crates.io crate rslua 0.2.6
[INFO] tweaked toml for crates.io crate rslua 0.2.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 402891dd8a0defc955c5faa683f2d7f2a48e4a878cf7c834bf0b5cce27c8f440
[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" "402891dd8a0defc955c5faa683f2d7f2a48e4a878cf7c834bf0b5cce27c8f440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "402891dd8a0defc955c5faa683f2d7f2a48e4a878cf7c834bf0b5cce27c8f440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "402891dd8a0defc955c5faa683f2d7f2a48e4a878cf7c834bf0b5cce27c8f440", kill_on_drop: false }`
[INFO] [stdout] 402891dd8a0defc955c5faa683f2d7f2a48e4a878cf7c834bf0b5cce27c8f440
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 4c4177e08b54a0b98b148ac1e6ecba158a0c0ca91bbf9601cf9eb418b7c32805
[INFO] running `Command { std: "docker" "start" "-a" "4c4177e08b54a0b98b148ac1e6ecba158a0c0ca91bbf9601cf9eb418b7c32805", kill_on_drop: false }`
[INFO] [stderr]     Checking rslua v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]    --> tests/compiler.rs:504:13
[INFO] [stdout]     |
[INFO] [stdout] 504 |         let output = try_compile_and_print("local a, b = not (1 + 2); b = not a + 1");
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> tests/compiler.rs:505:13
[INFO] [stdout]     |
[INFO] [stdout] 505 |         let expected = r#"
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `Command { std: "docker" "inspect" "4c4177e08b54a0b98b148ac1e6ecba158a0c0ca91bbf9601cf9eb418b7c32805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4177e08b54a0b98b148ac1e6ecba158a0c0ca91bbf9601cf9eb418b7c32805", kill_on_drop: false }`
[INFO] [stdout] 4c4177e08b54a0b98b148ac1e6ecba158a0c0ca91bbf9601cf9eb418b7c32805