[INFO] fetching crate potential 2.2.1...
[INFO] testing potential-2.2.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate potential 2.2.1 into /workspace/builds/worker-99/source
[INFO] validating manifest of crates.io crate potential 2.2.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-99/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48f4840fb0f87701863b40c67bd2be6d39ffde2d8431cdb3651086b14e49ed76
[INFO] running `Command { std: "docker" "start" "-a" "48f4840fb0f87701863b40c67bd2be6d39ffde2d8431cdb3651086b14e49ed76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48f4840fb0f87701863b40c67bd2be6d39ffde2d8431cdb3651086b14e49ed76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48f4840fb0f87701863b40c67bd2be6d39ffde2d8431cdb3651086b14e49ed76", kill_on_drop: false }`
[INFO] [stdout] 48f4840fb0f87701863b40c67bd2be6d39ffde2d8431cdb3651086b14e49ed76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3535aaca0d203f1c4a25811b7680153158148a7f3ad9f2c4cf8d5058652fc35b
[INFO] running `Command { std: "docker" "start" "-a" "3535aaca0d203f1c4a25811b7680153158148a7f3ad9f2c4cf8d5058652fc35b", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling potential v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.92s
[INFO] running `Command { std: "docker" "inspect" "3535aaca0d203f1c4a25811b7680153158148a7f3ad9f2c4cf8d5058652fc35b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3535aaca0d203f1c4a25811b7680153158148a7f3ad9f2c4cf8d5058652fc35b", kill_on_drop: false }`
[INFO] [stdout] 3535aaca0d203f1c4a25811b7680153158148a7f3ad9f2c4cf8d5058652fc35b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a96fa9fd3d9e571160928b36a6c96b1b605c504136ba24a298b76a17ed20342
[INFO] running `Command { std: "docker" "start" "-a" "5a96fa9fd3d9e571160928b36a6c96b1b605c504136ba24a298b76a17ed20342", kill_on_drop: false }`
[INFO] [stderr]    Compiling potential v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "5a96fa9fd3d9e571160928b36a6c96b1b605c504136ba24a298b76a17ed20342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a96fa9fd3d9e571160928b36a6c96b1b605c504136ba24a298b76a17ed20342", kill_on_drop: false }`
[INFO] [stdout] 5a96fa9fd3d9e571160928b36a6c96b1b605c504136ba24a298b76a17ed20342
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ceb5ab76fa385b76c934de0203f8456d2ceb705e4bd3d4962c4810cfdd4d381f
[INFO] running `Command { std: "docker" "start" "-a" "ceb5ab76fa385b76c934de0203f8456d2ceb705e4bd3d4962c4810cfdd4d381f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/potential-aa75f0994f2f0059)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests potential
[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_sync ... ok
[INFO] [stdout] test tests::lease_on_arc_is_static ... ok
[INFO] [stdout] test tests::lease_is_send ... ok
[INFO] [stdout] test tests::lease_on_arc_is_send ... ok
[INFO] [stdout] test tests::it_hangs_on_no_drop ... ok
[INFO] [stdout] test tests::lease_on_arc_is_sync ... 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 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Potential<T>::set (line 171) ... ok
[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>::set (line 177) ... ok
[INFO] [stdout] test src/lib.rs - Potential<T>::lease (line 238) ... ok
[INFO] [stdout] test src/lib.rs - (line 27) ... ok
[INFO] [stdout] test src/lib.rs - (line 70) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ceb5ab76fa385b76c934de0203f8456d2ceb705e4bd3d4962c4810cfdd4d381f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ceb5ab76fa385b76c934de0203f8456d2ceb705e4bd3d4962c4810cfdd4d381f", kill_on_drop: false }`
[INFO] [stdout] ceb5ab76fa385b76c934de0203f8456d2ceb705e4bd3d4962c4810cfdd4d381f