[INFO] fetching crate labrpc 0.2.3...
[INFO] testing labrpc-0.2.3 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate labrpc 0.2.3 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate labrpc 0.2.3
[INFO] finished tweaking crates.io crate labrpc 0.2.3
[INFO] tweaked toml for crates.io crate labrpc 0.2.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate labrpc 0.2.3 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 62 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 167093ed2e0b8af21f80dd6b9d304d9f9bcba1c027853d79ba9748493744a5ef
[INFO] running `Command { std: "docker" "start" "-a" "167093ed2e0b8af21f80dd6b9d304d9f9bcba1c027853d79ba9748493744a5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "167093ed2e0b8af21f80dd6b9d304d9f9bcba1c027853d79ba9748493744a5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "167093ed2e0b8af21f80dd6b9d304d9f9bcba1c027853d79ba9748493744a5ef", kill_on_drop: false }`
[INFO] [stdout] 167093ed2e0b8af21f80dd6b9d304d9f9bcba1c027853d79ba9748493744a5ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f378475ff57bf2f1c8d7ad50d9078c2faf8cb78f87cf4298645cd09a3d14b8e6
[INFO] running `Command { std: "docker" "start" "-a" "f378475ff57bf2f1c8d7ad50d9078c2faf8cb78f87cf4298645cd09a3d14b8e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling labrpc v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.23s
[INFO] running `Command { std: "docker" "inspect" "f378475ff57bf2f1c8d7ad50d9078c2faf8cb78f87cf4298645cd09a3d14b8e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f378475ff57bf2f1c8d7ad50d9078c2faf8cb78f87cf4298645cd09a3d14b8e6", kill_on_drop: false }`
[INFO] [stdout] f378475ff57bf2f1c8d7ad50d9078c2faf8cb78f87cf4298645cd09a3d14b8e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7897caa0126e385ebe46ee24fbfa9aded496b607af2416667bb25ff622f8eb2a
[INFO] running `Command { std: "docker" "start" "-a" "7897caa0126e385ebe46ee24fbfa9aded496b607af2416667bb25ff622f8eb2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling labrpc v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/network.rs:389:27
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn unlock<T>(network: &Arc<Mutex<T>>) -> MutexGuard<T> {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^     ------------- the same lifetime is hidden here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn unlock<T>(network: &Arc<Mutex<T>>) -> MutexGuard<'_, T> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "7897caa0126e385ebe46ee24fbfa9aded496b607af2416667bb25ff622f8eb2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7897caa0126e385ebe46ee24fbfa9aded496b607af2416667bb25ff622f8eb2a", kill_on_drop: false }`
[INFO] [stdout] 7897caa0126e385ebe46ee24fbfa9aded496b607af2416667bb25ff622f8eb2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a0121309fedc6a4632629c45ef879fc9156b3ae9abfa21fb4bc56e883944c62f
[INFO] running `Command { std: "docker" "start" "-a" "a0121309fedc6a4632629c45ef879fc9156b3ae9abfa21fb4bc56e883944c62f", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout] 
[INFO] [stderr]    --> src/network.rs:389:27
[INFO] [stdout] running 23 tests
[INFO] [stderr]     |
[INFO] [stdout] test network::tests::test_many_requests ... ignored, Large tests with many threads
[INFO] [stderr] 389 |     fn unlock<T>(network: &Arc<Mutex<T>>) -> MutexGuard<T> {
[INFO] [stdout] test client::tests::test_call_rpc_remote_dropped ... ok
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^     ------------- the same lifetime is hidden here
[INFO] [stdout] test client::tests::test_call_rpc_remote_error ... ok
[INFO] [stderr]     |                           |
[INFO] [stdout] test client::tests::test_call_rpc_not_connected ... ok
[INFO] [stderr]     |                           the lifetime is elided here
[INFO] [stdout] test client::tests::test_call_rpc ... ok
[INFO] [stderr]     |
[INFO] [stdout] test network::tests::test_server_killed ... ok
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 389 |     fn unlock<T>(network: &Arc<Mutex<T>>) -> MutexGuard<'_, T> {
[INFO] [stderr]     |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: `labrpc` (lib test) generated 1 warning (run `cargo fix --lib -p labrpc --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/labrpc-fc216d1d2aa9312c)
[INFO] [stdout] test network::tests::test_rpc_count_works ... ok
[INFO] [stdout] test server::tests::test_register_rpc_handler ... ok
[INFO] [stdout] test server::tests::test_serve_interrupted ... ok
[INFO] [stdout] test server::tests::test_register_rpc_handler_failure ... ok
[INFO] [stdout] test server::tests::test_serve_rpc ... ok
[INFO] [stdout] test server::tests::test_rpc_not_found ... ok
[INFO] [stdout] test network::tests::test_network_shutdown ... ok
[INFO] [stdout] test client::tests::test_call_across_threads ... ok
[INFO] [stdout] test network::tests::test_proxy_rpc ... ok
[INFO] [stdout] test network::tests::test_proxy_rpc_server_not_found ... ok
[INFO] [stdout] test network::tests::test_proxy_rpc_no_such_client ... ok
[INFO] [stdout] test network::tests::test_proxy_rpc_client_disabled ... ok
[INFO] [stdout] test server::tests::test_rpc_error ... ok
[INFO] [stdout] test network::tests::test_proxy_rpc_server_error ... ok
[INFO] [stdout] test server::tests::test_server_survives_30_rpc_errors ... ok
[INFO] [stdout] test network::tests::test_basic_functions ... ok
[INFO] [stdout] test network::tests::test_unreliable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.51s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests labrpc
[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" "a0121309fedc6a4632629c45ef879fc9156b3ae9abfa21fb4bc56e883944c62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0121309fedc6a4632629c45ef879fc9156b3ae9abfa21fb4bc56e883944c62f", kill_on_drop: false }`
[INFO] [stdout] a0121309fedc6a4632629c45ef879fc9156b3ae9abfa21fb4bc56e883944c62f