[INFO] fetching crate plugger-ruby 0.3.0...
[INFO] checking plugger-ruby-0.3.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate plugger-ruby 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate plugger-ruby 0.3.0 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plugger-ruby 0.3.0
[INFO] finished tweaking crates.io crate plugger-ruby 0.3.0
[INFO] tweaked toml for crates.io crate plugger-ruby 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mri-sys v0.2.5
[INFO] [stderr]   Downloaded plugger-core v0.3.0
[INFO] [stderr]   Downloaded rurust v0.1.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e26164f5efb7b39aaf8fa7bea0d3b7a9170263a6632a5f3e2d12cf6cbf25f6ab
[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" "e26164f5efb7b39aaf8fa7bea0d3b7a9170263a6632a5f3e2d12cf6cbf25f6ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e26164f5efb7b39aaf8fa7bea0d3b7a9170263a6632a5f3e2d12cf6cbf25f6ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26164f5efb7b39aaf8fa7bea0d3b7a9170263a6632a5f3e2d12cf6cbf25f6ab", kill_on_drop: false }`
[INFO] [stdout] e26164f5efb7b39aaf8fa7bea0d3b7a9170263a6632a5f3e2d12cf6cbf25f6ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] 8a5d371b341f80ea2b419657267692db59e9078e48f3975d0b92dca8bcf956d9
[INFO] running `Command { std: "docker" "start" "-a" "8a5d371b341f80ea2b419657267692db59e9078e48f3975d0b92dca8bcf956d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking plugger-core v0.3.0
[INFO] [stderr]    Compiling mri-sys v0.2.5
[INFO] [stderr]     Checking rurust v0.1.11
[INFO] [stderr]     Checking plugger-ruby v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0624]: associated function `new` is private
[INFO] [stdout]   --> src/lib.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |         match rurust::VM::new() {
[INFO] [stdout]    |                           ^^^ private associated function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0624]: associated function `new` is private
[INFO] [stdout]   --> src/lib.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |         match rurust::VM::new() {
[INFO] [stdout]    |                           ^^^ private associated function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0624`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0624`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `plugger-ruby`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8a5d371b341f80ea2b419657267692db59e9078e48f3975d0b92dca8bcf956d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a5d371b341f80ea2b419657267692db59e9078e48f3975d0b92dca8bcf956d9", kill_on_drop: false }`
[INFO] [stdout] 8a5d371b341f80ea2b419657267692db59e9078e48f3975d0b92dca8bcf956d9