[INFO] fetching crate moving_gc_arena 0.3.1...
[INFO] testing moving_gc_arena-0.3.1 against 1.47.0 for beta-1.48-1
[INFO] extracting crate moving_gc_arena 0.3.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate moving_gc_arena 0.3.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate moving_gc_arena 0.3.1
[INFO] finished tweaking crates.io crate moving_gc_arena 0.3.1
[INFO] tweaked toml for crates.io crate moving_gc_arena 0.3.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate moving_gc_arena 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 676d6dae2610780952bce2a0dcb920a2a8a8da9f096e44f2faadc92ba65d2bda
[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" "676d6dae2610780952bce2a0dcb920a2a8a8da9f096e44f2faadc92ba65d2bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "676d6dae2610780952bce2a0dcb920a2a8a8da9f096e44f2faadc92ba65d2bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676d6dae2610780952bce2a0dcb920a2a8a8da9f096e44f2faadc92ba65d2bda", kill_on_drop: false }`
[INFO] [stdout] 676d6dae2610780952bce2a0dcb920a2a8a8da9f096e44f2faadc92ba65d2bda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--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] 9602a5291bcc8819deaefd7cdd05c654f4c22368b9eeefbd0b9bb7808bd8043e
[INFO] running `Command { std: "docker" "start" "-a" "9602a5291bcc8819deaefd7cdd05c654f4c22368b9eeefbd0b9bb7808bd8043e", kill_on_drop: false }`
[INFO] [stderr]    Compiling moving_gc_arena v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "9602a5291bcc8819deaefd7cdd05c654f4c22368b9eeefbd0b9bb7808bd8043e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9602a5291bcc8819deaefd7cdd05c654f4c22368b9eeefbd0b9bb7808bd8043e", kill_on_drop: false }`
[INFO] [stdout] 9602a5291bcc8819deaefd7cdd05c654f4c22368b9eeefbd0b9bb7808bd8043e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 589932debd4ca431f96e84d8e3b7c27a9623133fb3fe8cf6f0e82acfa8ffa2ca
[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" "589932debd4ca431f96e84d8e3b7c27a9623133fb3fe8cf6f0e82acfa8ffa2ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling moving_gc_arena v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:772:66
[INFO] [stdout]     |
[INFO] [stdout] 772 |                 let mut handle = |mut s: Entry<LList>| -> Option<(Entry<LList>)> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:634:13
[INFO] [stdout]     |
[INFO] [stdout] 634 |         let mut rt2 = rt1.clone();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:842:13
[INFO] [stdout]     |
[INFO] [stdout] 842 |         let mut i = 0;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "589932debd4ca431f96e84d8e3b7c27a9623133fb3fe8cf6f0e82acfa8ffa2ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "589932debd4ca431f96e84d8e3b7c27a9623133fb3fe8cf6f0e82acfa8ffa2ca", kill_on_drop: false }`
[INFO] [stdout] 589932debd4ca431f96e84d8e3b7c27a9623133fb3fe8cf6f0e82acfa8ffa2ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6b9a2bc6e937c63122560d638c1e51f2afa19f53afaba3e530ed7411c41e5328
[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" "6b9a2bc6e937c63122560d638c1e51f2afa19f53afaba3e530ed7411c41e5328", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/lib.rs:772:66
[INFO] [stderr]     |
[INFO] [stderr] 772 |                 let mut handle = |mut s: Entry<LList>| -> Option<(Entry<LList>)> {
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:634:13
[INFO] [stderr]     |
[INFO] [stderr] 634 |         let mut rt2 = rt1.clone();
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:842:13
[INFO] [stderr]     |
[INFO] [stderr] 842 |         let mut i = 0;
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/moving_gc_arena-61582abab915e049
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test tests::check_impls ... ok
[INFO] [stdout] test tests::ix_to_root ... ok
[INFO] [stdout] test tests::deep_clone_into_with ... ok
[INFO] [stdout] test tests::non_static_strategy ... ok
[INFO] [stdout] test tests::root_ix_roundtrip ... ok
[INFO] [stdout] test tests::traverse_pre_post ... ok
[INFO] [stdout] test tests::traverse_sound ... ok
[INFO] [stdout] test tests::weaks_are_weak ... ok
[INFO] [stdout] test tests::indirect_correct ... ok
[INFO] [stdout] test tests::entry_ix_weak_commute ... ok
[INFO] [stdout] test tests::dfs_diamond ... ok
[INFO] [stdout] test tests::deep_clone_sound ... ok
[INFO] [stdout] test tests::root_weak_roundtrip ... ok
[INFO] [stdout] test tests::roots_are_root ... ok
[INFO] [stdout] test tests::upgrades_well_behaved ... ok
[INFO] [stdout] test tests::weak_ix_roundtrip ... ok
[INFO] [stdout] test tests::weak_to_root ... ok
[INFO] [stderr]    Doc-tests moving_gc_arena
[INFO] [stdout] test tests::simple_strategy ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/region/mod.rs - region::Region<T>::traverse_with (line 293) ... ok
[INFO] [stdout] test src/region/mod.rs - region::Region<T>::gc (line 190) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6b9a2bc6e937c63122560d638c1e51f2afa19f53afaba3e530ed7411c41e5328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9a2bc6e937c63122560d638c1e51f2afa19f53afaba3e530ed7411c41e5328", kill_on_drop: false }`
[INFO] [stdout] 6b9a2bc6e937c63122560d638c1e51f2afa19f53afaba3e530ed7411c41e5328
