[INFO] fetching crate drc 0.1.2...
[INFO] testing drc-0.1.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate drc 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate drc 0.1.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drc 0.1.2
[INFO] finished tweaking crates.io crate drc 0.1.2
[INFO] tweaked toml for crates.io crate drc 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb28ca2d16bfcb06db7ac32761bb567b7c75a1e413a8dc67117cafa5e1311133
[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" "cb28ca2d16bfcb06db7ac32761bb567b7c75a1e413a8dc67117cafa5e1311133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb28ca2d16bfcb06db7ac32761bb567b7c75a1e413a8dc67117cafa5e1311133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb28ca2d16bfcb06db7ac32761bb567b7c75a1e413a8dc67117cafa5e1311133", kill_on_drop: false }`
[INFO] [stdout] cb28ca2d16bfcb06db7ac32761bb567b7c75a1e413a8dc67117cafa5e1311133
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 647425cb20d446532e02c2f74a105ab56be7e21d995a2cf8da26ac5ad5509dcb
[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" "647425cb20d446532e02c2f74a105ab56be7e21d995a2cf8da26ac5ad5509dcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling drc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "647425cb20d446532e02c2f74a105ab56be7e21d995a2cf8da26ac5ad5509dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "647425cb20d446532e02c2f74a105ab56be7e21d995a2cf8da26ac5ad5509dcb", kill_on_drop: false }`
[INFO] [stdout] 647425cb20d446532e02c2f74a105ab56be7e21d995a2cf8da26ac5ad5509dcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ea3e1762f10dd624ffcde9cd6177f1236858ed4d95031f9bdf93c53d5640a02
[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" "1ea3e1762f10dd624ffcde9cd6177f1236858ed4d95031f9bdf93c53d5640a02", kill_on_drop: false }`
[INFO] [stderr]    Compiling drc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/drc.rs:2006:53
[INFO] [stdout]      |
[INFO] [stdout] 2006 |                 let original_storage_ref = unsafe { (&*original_storage) };
[INFO] [stdout]      |                                                     ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/drc.rs:2007:53
[INFO] [stdout]      |
[INFO] [stdout] 2007 |                 let separate_storage_ref = unsafe { (&*separate_storage) };
[INFO] [stdout]      |                                                     ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "1ea3e1762f10dd624ffcde9cd6177f1236858ed4d95031f9bdf93c53d5640a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea3e1762f10dd624ffcde9cd6177f1236858ed4d95031f9bdf93c53d5640a02", kill_on_drop: false }`
[INFO] [stdout] 1ea3e1762f10dd624ffcde9cd6177f1236858ed4d95031f9bdf93c53d5640a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9a0bacda215f71dbbd9b82e2da82e6a5950b75b33820d38e97d5e779e6bc763a
[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" "9a0bacda215f71dbbd9b82e2da82e6a5950b75b33820d38e97d5e779e6bc763a", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/drc.rs:2006:53
[INFO] [stderr]      |
[INFO] [stderr] 2006 |                 let original_storage_ref = unsafe { (&*original_storage) };
[INFO] [stderr]      |                                                     ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/drc.rs:2007:53
[INFO] [stderr]      |
[INFO] [stderr] 2007 |                 let separate_storage_ref = unsafe { (&*separate_storage) };
[INFO] [stderr]      |                                                     ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/drc-270e54eba95bb4e5
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test drc::tests::clone ... ok
[INFO] [stdout] test drc::tests::debug ... ok
[INFO] [stdout] test drc::tests::arc_ptr_eq ... ok
[INFO] [stdout] test drc::tests::detach ... ok
[INFO] [stdout] test drc::tests::display ... ok
[INFO] [stdout] test drc::tests::get_mut ... ok
[INFO] [stdout] test drc::tests::drop ... ok
[INFO] [stdout] test drc::tests::linked ... ok
[INFO] [stdout] test drc::tests::downgrade ... ok
[INFO] [stdout] test drc::tests::pointer ... ok
[INFO] [stdout] test drc::tests::new ... ok
[INFO] [stdout] test drc::tests::separate ... ok
[INFO] [stdout] test drc::tests::ptr_eq ... ok
[INFO] [stdout] test drc::tests::weak_count ... ok
[INFO] [stdout] test drc::tests::strong_count ... ok
[INFO] [stdout] test weak::tests::detach ... ok
[INFO] [stdout] test weak::tests::clone ... ok
[INFO] [stdout] test weak::tests::debug ... ok
[INFO] [stdout] test drc::tests::try_unwrap ... ok
[INFO] [stdout] test weak::tests::upgrade ... ok
[INFO] [stdout] test drc::tests::make_mut ... ok
[INFO] [stdout] test weak::tests::drop ... ok
[INFO] [stdout] test weak::tests::new_and_default ... ok
[INFO] [stdout] test weak::tests::with_weak_arc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests drc
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::eq (line 1049) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::clone (line 759) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::lt (line 1108) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::default (line 887) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::le (line 1126) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::ge (line 1162) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::cmp (line 1024) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::gt (line 1144) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::arc_ptr_eq (line 452) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::ne (line 1066) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::drop (line 805) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::get_mut (line 360) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::make_mut (line 546) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::linked (line 496) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::downgrade (line 222) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::detach (line 88) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::new (line 67) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::partial_cmp (line 1088) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::try_unwrap (line 150) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::new (line 87) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::weak_count (line 258) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::separate (line 120) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::ptr_eq (line 403) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::detach (line 250) ... ok
[INFO] [stdout] test src/drc.rs - drc::Drc<T>::strong_count (line 308) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::drop (line 357) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::default (line 417) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::upgrade (line 173) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::with_weak_arc (line 123) ... ok
[INFO] [stdout] test src/weak.rs - weak::Weak<T>::clone (line 336) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.22s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9a0bacda215f71dbbd9b82e2da82e6a5950b75b33820d38e97d5e779e6bc763a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a0bacda215f71dbbd9b82e2da82e6a5950b75b33820d38e97d5e779e6bc763a", kill_on_drop: false }`
[INFO] [stdout] 9a0bacda215f71dbbd9b82e2da82e6a5950b75b33820d38e97d5e779e6bc763a