[INFO] fetching crate perfrecord-mach-ipc-rendezvous 0.2.1...
[INFO] testing perfrecord-mach-ipc-rendezvous-0.2.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate perfrecord-mach-ipc-rendezvous 0.2.1 into /workspace/builds/worker-0-tc2/source
[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate perfrecord-mach-ipc-rendezvous 0.2.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7b7a1aeab682169e635c84f7cb31849ef2328286fe3dc4749b87834c8e550a4
[INFO] running `Command { std: "docker" "start" "-a" "b7b7a1aeab682169e635c84f7cb31849ef2328286fe3dc4749b87834c8e550a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7b7a1aeab682169e635c84f7cb31849ef2328286fe3dc4749b87834c8e550a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7b7a1aeab682169e635c84f7cb31849ef2328286fe3dc4749b87834c8e550a4", kill_on_drop: false }`
[INFO] [stdout] b7b7a1aeab682169e635c84f7cb31849ef2328286fe3dc4749b87834c8e550a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 841c94eef47d1523b7af39611839af098cfb6b69b7eaa9340d886c4fa5c28e22
[INFO] running `Command { std: "docker" "start" "-a" "841c94eef47d1523b7af39611839af098cfb6b69b7eaa9340d886c4fa5c28e22", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling 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: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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "841c94eef47d1523b7af39611839af098cfb6b69b7eaa9340d886c4fa5c28e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "841c94eef47d1523b7af39611839af098cfb6b69b7eaa9340d886c4fa5c28e22", kill_on_drop: false }`
[INFO] [stdout] 841c94eef47d1523b7af39611839af098cfb6b69b7eaa9340d886c4fa5c28e22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 969c7e12c6e24a9c16463403a72238c4885d3b2d308466b03599f9ebd4dd61df
[INFO] running `Command { std: "docker" "start" "-a" "969c7e12c6e24a9c16463403a72238c4885d3b2d308466b03599f9ebd4dd61df", kill_on_drop: false }`
[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] [stderr]    Compiling 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: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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "969c7e12c6e24a9c16463403a72238c4885d3b2d308466b03599f9ebd4dd61df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "969c7e12c6e24a9c16463403a72238c4885d3b2d308466b03599f9ebd4dd61df", kill_on_drop: false }`
[INFO] [stdout] 969c7e12c6e24a9c16463403a72238c4885d3b2d308466b03599f9ebd4dd61df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 48bf83fdb60b162159a1483aee19e3398a587b4eb64ad5f7e53a313c33881edf
[INFO] running `Command { std: "docker" "start" "-a" "48bf83fdb60b162159a1483aee19e3398a587b4eb64ad5f7e53a313c33881edf", kill_on_drop: false }`
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]    --> src/lib.rs:832:9
[INFO] [stderr]     |
[INFO] [stderr] 832 |            drop(OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stderr]     |   _________^    -
[INFO] [stderr]     |  |______________|
[INFO] [stderr] 833 | ||             &mut self.name,
[INFO] [stderr] 834 | ||             String::new(),
[INFO] [stderr] 835 | ||         )));
[INFO] [stderr]     | ||__________-^
[INFO] [stderr]     | |___________|
[INFO] [stderr]     |             argument has type `Result<(), MachError>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 832 ~         let _ = OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stderr] 833 |             &mut self.name,
[INFO] [stderr] 834 |             String::new(),
[INFO] [stderr] 835 ~         ));
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]    --> src/lib.rs:880:9
[INFO] [stderr]     |
[INFO] [stderr] 880 |            drop(OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stderr]     |   _________^    -
[INFO] [stderr]     |  |______________|
[INFO] [stderr] 881 | ||             &mut self.name,
[INFO] [stderr] 882 | ||             String::new(),
[INFO] [stderr] 883 | ||         )));
[INFO] [stderr]     | ||__________-^
[INFO] [stderr]     | |___________|
[INFO] [stderr]     |             argument has type `Result<(), MachError>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 880 ~         let _ = OsIpcReceiver::unregister_global_name(mem::replace(
[INFO] [stderr] 881 |             &mut self.name,
[INFO] [stderr] 882 |             String::new(),
[INFO] [stderr] 883 ~         ));
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `perfrecord-mach-ipc-rendezvous` (lib) generated 2 warnings
[INFO] [stderr] warning: `perfrecord-mach-ipc-rendezvous` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/perfrecord_mach_ipc_rendezvous-0c1b64f2f0b57103)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests perfrecord_mach_ipc_rendezvous
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "48bf83fdb60b162159a1483aee19e3398a587b4eb64ad5f7e53a313c33881edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48bf83fdb60b162159a1483aee19e3398a587b4eb64ad5f7e53a313c33881edf", kill_on_drop: false }`
[INFO] [stdout] 48bf83fdb60b162159a1483aee19e3398a587b4eb64ad5f7e53a313c33881edf