[INFO] fetching crate perfrecord-mach-ipc-rendezvous 0.2.1...
[INFO] checking perfrecord-mach-ipc-rendezvous-0.2.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate perfrecord-mach-ipc-rendezvous 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate perfrecord-mach-ipc-rendezvous 0.2.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate perfrecord-mach-ipc-rendezvous 0.2.1
[INFO] finished tweaking crates.io crate perfrecord-mach-ipc-rendezvous 0.2.1
[INFO] tweaked toml for crates.io crate perfrecord-mach-ipc-rendezvous 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72f60c763f9887e35e8f3908ce45027618fd950d4188ed0546141dbc0f56a2af
[INFO] running `Command { std: "docker" "start" "-a" "72f60c763f9887e35e8f3908ce45027618fd950d4188ed0546141dbc0f56a2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72f60c763f9887e35e8f3908ce45027618fd950d4188ed0546141dbc0f56a2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72f60c763f9887e35e8f3908ce45027618fd950d4188ed0546141dbc0f56a2af", kill_on_drop: false }`
[INFO] [stdout] 72f60c763f9887e35e8f3908ce45027618fd950d4188ed0546141dbc0f56a2af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cd09d8305a5cc672ff768aecb21acb2beb233fe150f0d82bb386a64a7ed55f7
[INFO] running `Command { std: "docker" "start" "-a" "7cd09d8305a5cc672ff768aecb21acb2beb233fe150f0d82bb386a64a7ed55f7", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking perfrecord-mach-ipc-rendezvous v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/lib.rs:832:9
[INFO] [stdout]     |
[INFO] [stdout] 832 |            drop(OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout]     |   _________^    -
[INFO] [stdout]     |  |______________|
[INFO] [stdout] 833 | ||             &mut self.name,
[INFO] [stdout] 834 | ||             String::new(),
[INFO] [stdout] 835 | ||         )));
[INFO] [stdout]     | ||__________-^
[INFO] [stdout]     | |___________|
[INFO] [stdout]     |             argument has type `Result<(), MachError>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 832 ~         let _ = OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout] 833 |             &mut self.name,
[INFO] [stdout] 834 |             String::new(),
[INFO] [stdout] 835 ~         ));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/lib.rs:832:9
[INFO] [stdout]     |
[INFO] [stdout] 832 |            drop(OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout]     |   _________^    -
[INFO] [stdout]     |  |______________|
[INFO] [stdout] 833 | ||             &mut self.name,
[INFO] [stdout] 834 | ||             String::new(),
[INFO] [stdout] 835 | ||         )));
[INFO] [stdout]     | ||__________-^
[INFO] [stdout]     | |___________|
[INFO] [stdout]     |             argument has type `Result<(), MachError>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 832 ~         let _ = OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout] 833 |             &mut self.name,
[INFO] [stdout] 834 |             String::new(),
[INFO] [stdout] 835 ~         ));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/lib.rs:880:9
[INFO] [stdout]     |
[INFO] [stdout] 880 |            drop(OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout]     |   _________^    -
[INFO] [stdout]     |  |______________|
[INFO] [stdout] 881 | ||             &mut self.name,
[INFO] [stdout] 882 | ||             String::new(),
[INFO] [stdout] 883 | ||         )));
[INFO] [stdout]     | ||__________-^
[INFO] [stdout]     | |___________|
[INFO] [stdout]     |             argument has type `Result<(), MachError>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 880 ~         let _ = OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout] 881 |             &mut self.name,
[INFO] [stdout] 882 |             String::new(),
[INFO] [stdout] 883 ~         ));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/lib.rs:880:9
[INFO] [stdout]     |
[INFO] [stdout] 880 |            drop(OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout]     |   _________^    -
[INFO] [stdout]     |  |______________|
[INFO] [stdout] 881 | ||             &mut self.name,
[INFO] [stdout] 882 | ||             String::new(),
[INFO] [stdout] 883 | ||         )));
[INFO] [stdout]     | ||__________-^
[INFO] [stdout]     | |___________|
[INFO] [stdout]     |             argument has type `Result<(), MachError>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 880 ~         let _ = OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stdout] 881 |             &mut self.name,
[INFO] [stdout] 882 |             String::new(),
[INFO] [stdout] 883 ~         ));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "7cd09d8305a5cc672ff768aecb21acb2beb233fe150f0d82bb386a64a7ed55f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cd09d8305a5cc672ff768aecb21acb2beb233fe150f0d82bb386a64a7ed55f7", kill_on_drop: false }`
[INFO] [stdout] 7cd09d8305a5cc672ff768aecb21acb2beb233fe150f0d82bb386a64a7ed55f7