[INFO] fetching crate cxx-demo 0.0.6...
[INFO] checking cxx-demo-0.0.6 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate cxx-demo 0.0.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cxx-demo 0.0.6 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cxx-demo 0.0.6
[INFO] finished tweaking crates.io crate cxx-demo 0.0.6
[INFO] tweaked toml for crates.io crate cxx-demo 0.0.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", 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] f9cbabed93d30820d330bd19d0270f3ba28de1f28400f8cd2240c94488f44204
[INFO] running `Command { std: "docker" "start" "-a" "f9cbabed93d30820d330bd19d0270f3ba28de1f28400f8cd2240c94488f44204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9cbabed93d30820d330bd19d0270f3ba28de1f28400f8cd2240c94488f44204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9cbabed93d30820d330bd19d0270f3ba28de1f28400f8cd2240c94488f44204", kill_on_drop: false }`
[INFO] [stdout] f9cbabed93d30820d330bd19d0270f3ba28de1f28400f8cd2240c94488f44204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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] d1d3716225b03c230076d29883fb677e1ba6dba6e0de880b7a3809f3334cb5f2
[INFO] running `Command { std: "docker" "start" "-a" "d1d3716225b03c230076d29883fb677e1ba6dba6e0de880b7a3809f3334cb5f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling scratch v1.0.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.49
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling link-cplusplus v1.0.5
[INFO] [stderr]    Compiling cxx v1.0.49
[INFO] [stderr]    Compiling cxx-build v1.0.49
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.49
[INFO] [stderr]    Compiling cxx-demo v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `new_blobstore_client`
[INFO] [stdout]   --> src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |         fn new_blobstore_client() -> UniquePtr<BlobstoreClient>;
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `put`
[INFO] [stdout]   --> src/lib.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn put(&self, parts: &mut MultiBuf) -> u64;
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tag`
[INFO] [stdout]   --> src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |         fn tag(&self, blobid: u64, tag: &str);
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `metadata`
[INFO] [stdout]   --> src/lib.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn metadata(&self, blobid: u64) -> BlobMetadata;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.78s
[INFO] running `Command { std: "docker" "inspect" "d1d3716225b03c230076d29883fb677e1ba6dba6e0de880b7a3809f3334cb5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1d3716225b03c230076d29883fb677e1ba6dba6e0de880b7a3809f3334cb5f2", kill_on_drop: false }`
[INFO] [stdout] d1d3716225b03c230076d29883fb677e1ba6dba6e0de880b7a3809f3334cb5f2