[INFO] fetching crate libR-sys 0.2.1...
[INFO] checking libR-sys-0.2.1 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate libR-sys 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libR-sys 0.2.1 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libR-sys 0.2.1
[INFO] finished tweaking crates.io crate libR-sys 0.2.1
[INFO] tweaked toml for crates.io crate libR-sys 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88a17c57e52a0fe0de0b883d7d7051045b0fb90ec6b343998daddbe4e270eafa
[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" "88a17c57e52a0fe0de0b883d7d7051045b0fb90ec6b343998daddbe4e270eafa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88a17c57e52a0fe0de0b883d7d7051045b0fb90ec6b343998daddbe4e270eafa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88a17c57e52a0fe0de0b883d7d7051045b0fb90ec6b343998daddbe4e270eafa", kill_on_drop: false }`
[INFO] [stdout] 88a17c57e52a0fe0de0b883d7d7051045b0fb90ec6b343998daddbe4e270eafa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] d6cb80236e28095fab57bec58342d446b6635d13e27c92434ff5f1dce7588f7f
[INFO] running `Command { std: "docker" "start" "-a" "d6cb80236e28095fab57bec58342d446b6635d13e27c92434ff5f1dce7588f7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libR-sys v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> build.rs:351:17
[INFO] [stdout]     |
[INFO] [stdout] 351 | /                 format!(
[INFO] [stdout] 352 | |                     "Cannot find libR-sys bindings file for R {}.{}.{}{} on {} in {}. Consider compiling with --features use-bindgen.",
[INFO] [stdout] 353 | |                     version_info.major, version_info.minor, version_info.patch, version_info.devel, target_os, bindings_path.display()
[INFO] [stdout] 354 | |                 )
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `Command { std: "docker" "inspect" "d6cb80236e28095fab57bec58342d446b6635d13e27c92434ff5f1dce7588f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6cb80236e28095fab57bec58342d446b6635d13e27c92434ff5f1dce7588f7f", kill_on_drop: false }`
[INFO] [stdout] d6cb80236e28095fab57bec58342d446b6635d13e27c92434ff5f1dce7588f7f