[INFO] fetching crate moving_gc_arena 0.3.3...
[INFO] testing moving_gc_arena-0.3.3 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate moving_gc_arena 0.3.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate moving_gc_arena 0.3.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate moving_gc_arena 0.3.3
[INFO] finished tweaking crates.io crate moving_gc_arena 0.3.3
[INFO] tweaked toml for crates.io crate moving_gc_arena 0.3.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate moving_gc_arena 0.3.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2965a22a99cecfc4d7e9419e8832f6a325d705d5b6a5f7f4622a107f91918b18
[INFO] running `Command { std: "docker" "start" "-a" "2965a22a99cecfc4d7e9419e8832f6a325d705d5b6a5f7f4622a107f91918b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2965a22a99cecfc4d7e9419e8832f6a325d705d5b6a5f7f4622a107f91918b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2965a22a99cecfc4d7e9419e8832f6a325d705d5b6a5f7f4622a107f91918b18", kill_on_drop: false }`
[INFO] [stdout] 2965a22a99cecfc4d7e9419e8832f6a325d705d5b6a5f7f4622a107f91918b18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 409aee76ddde76a8cca400f6262a7bc1f1096f2bf9412cf49e6348bc914cd229
[INFO] running `Command { std: "docker" "start" "-a" "409aee76ddde76a8cca400f6262a7bc1f1096f2bf9412cf49e6348bc914cd229", kill_on_drop: false }`
[INFO] [stderr]    Compiling moving_gc_arena v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/region/collect.rs:376:10
[INFO] [stdout]     |
[INFO] [stdout] 376 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "409aee76ddde76a8cca400f6262a7bc1f1096f2bf9412cf49e6348bc914cd229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "409aee76ddde76a8cca400f6262a7bc1f1096f2bf9412cf49e6348bc914cd229", kill_on_drop: false }`
[INFO] [stdout] 409aee76ddde76a8cca400f6262a7bc1f1096f2bf9412cf49e6348bc914cd229
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bde318e12fb42b1f6e9d61700352af1c8848d136ec1d700895533563e3dbb5c
[INFO] running `Command { std: "docker" "start" "-a" "1bde318e12fb42b1f6e9d61700352af1c8848d136ec1d700895533563e3dbb5c", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/region/collect.rs:376:10
[INFO] [stdout]     |
[INFO] [stdout] 376 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling moving_gc_arena v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/region/collect.rs:376:10
[INFO] [stdout]     |
[INFO] [stdout] 376 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "1bde318e12fb42b1f6e9d61700352af1c8848d136ec1d700895533563e3dbb5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bde318e12fb42b1f6e9d61700352af1c8848d136ec1d700895533563e3dbb5c", kill_on_drop: false }`
[INFO] [stdout] 1bde318e12fb42b1f6e9d61700352af1c8848d136ec1d700895533563e3dbb5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7fcba79ad4d51688724f2cf30252d8f0e94564a7ba149a0ee394f1257fae60af
[INFO] running `Command { std: "docker" "start" "-a" "7fcba79ad4d51688724f2cf30252d8f0e94564a7ba149a0ee394f1257fae60af", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stdout] running 20 tests
[INFO] [stderr]    --> src/region/collect.rs:376:10
[INFO] [stdout] test tests::check_impls ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::deep_clone_into_with ... ok
[INFO] [stderr] 376 |         };
[INFO] [stdout] test tests::indirect_correct ... ok
[INFO] [stderr]     |          ^ help: remove this semicolon
[INFO] [stdout] test tests::dfs_diamond ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::non_static_strategy ... ok
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] test tests::print_external_references ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::ix_to_root ... ok
[INFO] [stderr] warning: `moving_gc_arena` (lib) generated 1 warning
[INFO] [stdout] test tests::entry_ix_weak_commute ... ok
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] test tests::deep_clone_sound ... ok
[INFO] [stderr]    --> src/lib.rs:772:66
[INFO] [stdout] test tests::roots_are_root ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::upgrades_well_behaved ... ok
[INFO] [stderr] 772 |                 let mut handle = |mut s: Entry<LList>| -> Option<(Entry<LList>)> {
[INFO] [stdout] test tests::weak_ix_roundtrip ... ok
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] test tests::weaks_are_weak ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::root_weak_roundtrip ... ok
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] test tests::root_ix_roundtrip ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::weak_to_root ... ok
[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: `moving_gc_arena` (lib test) generated 4 warnings (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/moving_gc_arena-0763d1d9c416e554)
[INFO] [stdout] test tests::traverse_pre_post ... ok
[INFO] [stdout] test tests::traverse_sound ... ok
[INFO] [stdout] test tests::invalid_ix_in_gc - should panic ... ok
[INFO] [stdout] test tests::simple_strategy ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.31s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests moving_gc_arena
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> /opt/rustwide/workdir/src/region/collect.rs:376:10
[INFO] [stderr]     |
[INFO] [stderr] 376 |         };
[INFO] [stderr]     |          ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/region/mod.rs - region::Region<T>::gc (line 190) ... ok
[INFO] [stdout] test src/region/mod.rs - region::Region<T>::traverse_with (line 293) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.50s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7fcba79ad4d51688724f2cf30252d8f0e94564a7ba149a0ee394f1257fae60af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fcba79ad4d51688724f2cf30252d8f0e94564a7ba149a0ee394f1257fae60af", kill_on_drop: false }`
[INFO] [stdout] 7fcba79ad4d51688724f2cf30252d8f0e94564a7ba149a0ee394f1257fae60af
