[INFO] fetching crate dyplugin 0.2.0...
[INFO] checking dyplugin-0.2.0 against master#d902752866cbbdb331e3cf28ff6bba86ab0f6c62 for pr-77271
[INFO] extracting crate dyplugin 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate dyplugin 0.2.0 on toolchain d902752866cbbdb331e3cf28ff6bba86ab0f6c62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dyplugin 0.2.0
[INFO] finished tweaking crates.io crate dyplugin 0.2.0
[INFO] tweaked toml for crates.io crate dyplugin 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f6f8d99de6aabd1cb2dfee87f7b1f5b2ecbf7aaf01cd895668ec3975fbb8557
[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" "2f6f8d99de6aabd1cb2dfee87f7b1f5b2ecbf7aaf01cd895668ec3975fbb8557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f6f8d99de6aabd1cb2dfee87f7b1f5b2ecbf7aaf01cd895668ec3975fbb8557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f6f8d99de6aabd1cb2dfee87f7b1f5b2ecbf7aaf01cd895668ec3975fbb8557", kill_on_drop: false }`
[INFO] [stdout] 2f6f8d99de6aabd1cb2dfee87f7b1f5b2ecbf7aaf01cd895668ec3975fbb8557
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5cefe320dd8470d5b2777a2661640194efb34917aace1ac27755bca7a9a4d88
[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" "e5cefe320dd8470d5b2777a2661640194efb34917aace1ac27755bca7a9a4d88", kill_on_drop: false }`
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking dyplugin v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/lib.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 |               pub fn load<'a>(&mut self, lib: &str) -> ::std::io::Result<()> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |           plugin_registry!(
[INFO] [stdout]    |  _________-
[INFO] [stdout] 97 | |             fn is_empty(x: &str) -> bool;
[INFO] [stdout] 98 | |         );
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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: associated function is never used: `unload`
[INFO] [stdout]   --> src/lib.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 |               pub fn unload(&mut self, name: &str) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |           plugin_registry!(
[INFO] [stdout]    |  _________-
[INFO] [stdout] 97 | |             fn is_empty(x: &str) -> bool;
[INFO] [stdout] 98 | |         );
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "e5cefe320dd8470d5b2777a2661640194efb34917aace1ac27755bca7a9a4d88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5cefe320dd8470d5b2777a2661640194efb34917aace1ac27755bca7a9a4d88", kill_on_drop: false }`
[INFO] [stdout] e5cefe320dd8470d5b2777a2661640194efb34917aace1ac27755bca7a9a4d88