[INFO] fetching crate libR-sys 0.7.1...
[INFO] checking libR-sys-0.7.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate libR-sys 0.7.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate libR-sys 0.7.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libR-sys 0.7.1
[INFO] finished tweaking crates.io crate libR-sys 0.7.1
[INFO] tweaked toml for crates.io crate libR-sys 0.7.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c44988cbcdb3dfd7faae0849b52eee38501a5cfb5258bc4a347d5deff77ba332
[INFO] running `Command { std: "docker" "start" "-a" "c44988cbcdb3dfd7faae0849b52eee38501a5cfb5258bc4a347d5deff77ba332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c44988cbcdb3dfd7faae0849b52eee38501a5cfb5258bc4a347d5deff77ba332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c44988cbcdb3dfd7faae0849b52eee38501a5cfb5258bc4a347d5deff77ba332", kill_on_drop: false }`
[INFO] [stdout] c44988cbcdb3dfd7faae0849b52eee38501a5cfb5258bc4a347d5deff77ba332
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3aba125db6e855dcde106815b228c169bd01722b98408554c434484623083166
[INFO] running `Command { std: "docker" "start" "-a" "3aba125db6e855dcde106815b228c169bd01722b98408554c434484623083166", kill_on_drop: false }`
[INFO] [stderr]    Compiling libR-sys v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> build.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     InvalidEnvVar(&'static str),
[INFO] [stdout]    |     ------------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnvVarError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 72 |     InvalidEnvVar(()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> build.rs:73:22
[INFO] [stdout]    |
[INFO] [stdout] 73 |     RInvocationError(io::Error),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnvVarError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 73 |     RInvocationError(()),
[INFO] [stdout]    |                      ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> build.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |     InvalidROutput(&'static str),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnvVarError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 74 |     InvalidROutput(()),
[INFO] [stdout]    |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: libR-sys@0.7.1: using generic linux-x86_64 libR-sys bindings. These may not work for R 4.1.2false.
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "3aba125db6e855dcde106815b228c169bd01722b98408554c434484623083166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aba125db6e855dcde106815b228c169bd01722b98408554c434484623083166", kill_on_drop: false }`
[INFO] [stdout] 3aba125db6e855dcde106815b228c169bd01722b98408554c434484623083166