[INFO] fetching crate potential 2.2.1...
[INFO] testing potential-2.2.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate potential 2.2.1 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate potential 2.2.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate potential 2.2.1
[INFO] finished tweaking crates.io crate potential 2.2.1
[INFO] tweaked toml for crates.io crate potential 2.2.1 written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60f858b7e3662ad5cfe899fc1f105e482eb28ac3cb063035e5c54080cd5c568b
[INFO] running `Command { std: "docker" "start" "-a" "60f858b7e3662ad5cfe899fc1f105e482eb28ac3cb063035e5c54080cd5c568b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60f858b7e3662ad5cfe899fc1f105e482eb28ac3cb063035e5c54080cd5c568b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60f858b7e3662ad5cfe899fc1f105e482eb28ac3cb063035e5c54080cd5c568b", kill_on_drop: false }`
[INFO] [stdout] 60f858b7e3662ad5cfe899fc1f105e482eb28ac3cb063035e5c54080cd5c568b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6ef0b803575cf7608c56bd524553f1b8d2f8b81fc61cd30a0a7e25dcfee6e11
[INFO] running `Command { std: "docker" "start" "-a" "f6ef0b803575cf7608c56bd524553f1b8d2f8b81fc61cd30a0a7e25dcfee6e11", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling potential v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.86s
[INFO] running `Command { std: "docker" "inspect" "f6ef0b803575cf7608c56bd524553f1b8d2f8b81fc61cd30a0a7e25dcfee6e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6ef0b803575cf7608c56bd524553f1b8d2f8b81fc61cd30a0a7e25dcfee6e11", kill_on_drop: false }`
[INFO] [stdout] f6ef0b803575cf7608c56bd524553f1b8d2f8b81fc61cd30a0a7e25dcfee6e11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b15521104e7425edfb4aa4fce4992742492c35d0b82a889867de37bd10ae48a
[INFO] running `Command { std: "docker" "start" "-a" "9b15521104e7425edfb4aa4fce4992742492c35d0b82a889867de37bd10ae48a", kill_on_drop: false }`
[INFO] [stderr]    Compiling potential v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.58s
[INFO] running `Command { std: "docker" "inspect" "9b15521104e7425edfb4aa4fce4992742492c35d0b82a889867de37bd10ae48a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b15521104e7425edfb4aa4fce4992742492c35d0b82a889867de37bd10ae48a", kill_on_drop: false }`
[INFO] [stdout] 9b15521104e7425edfb4aa4fce4992742492c35d0b82a889867de37bd10ae48a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e282356520f7550e4f68b0697587bd5912c718528d8a7568fbb6d3e0a7d2bf2b
[INFO] running `Command { std: "docker" "start" "-a" "e282356520f7550e4f68b0697587bd5912c718528d8a7568fbb6d3e0a7d2bf2b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/potential-e15817b49314e0fb)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::it_blocks ... ok
[INFO] [stdout] test tests::it_handles_stealing ... ok
[INFO] [stdout] test tests::lease_is_send ... ok
[INFO] [stdout] test tests::lease_is_sync ... ok
[INFO] [stdout] test tests::lease_on_arc_is_static ... ok
[INFO] [stdout] test tests::lease_on_arc_is_sync ... ok
[INFO] [stdout] test tests::it_hangs_on_no_drop ... ok
[INFO] [stdout] test tests::lease_on_arc_is_send ... ok
[INFO] [stdout] test tests::lease_on_rc_is_static ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests potential
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Potential<T>::get_mut (line 212) ... ok
[INFO] [stdout] test src/lib.rs - Potential<T>::lease (line 248) ... ok
[INFO] [stdout] test src/lib.rs - Potential<T>::lease (line 238) ... ok
[INFO] [stdout] test src/lib.rs - Potential<T>::set (line 171) ... ok
[INFO] [stdout] test src/lib.rs - Potential<T>::set (line 177) ... ok
[INFO] [stdout] test src/lib.rs - (line 70) ... ok
[INFO] [stdout] test src/lib.rs - (line 27) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e282356520f7550e4f68b0697587bd5912c718528d8a7568fbb6d3e0a7d2bf2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e282356520f7550e4f68b0697587bd5912c718528d8a7568fbb6d3e0a7d2bf2b", kill_on_drop: false }`
[INFO] [stdout] e282356520f7550e4f68b0697587bd5912c718528d8a7568fbb6d3e0a7d2bf2b