[INFO] fetching crate fut-ret 0.2.0...
[INFO] testing fut-ret-0.2.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate fut-ret 0.2.0 into /workspace/builds/worker-52/source
[INFO] validating manifest of crates.io crate fut-ret 0.2.0 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 fut-ret 0.2.0
[INFO] finished tweaking crates.io crate fut-ret 0.2.0
[INFO] tweaked toml for crates.io crate fut-ret 0.2.0 written to /workspace/builds/worker-52/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-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] b6194caa12df212bc3f040f9c4e710453e41f0f3736fea3e9b1a77bde19fc117
[INFO] running `Command { std: "docker" "start" "-a" "b6194caa12df212bc3f040f9c4e710453e41f0f3736fea3e9b1a77bde19fc117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6194caa12df212bc3f040f9c4e710453e41f0f3736fea3e9b1a77bde19fc117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6194caa12df212bc3f040f9c4e710453e41f0f3736fea3e9b1a77bde19fc117", kill_on_drop: false }`
[INFO] [stdout] b6194caa12df212bc3f040f9c4e710453e41f0f3736fea3e9b1a77bde19fc117
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 392c0b28a7e5aaa7a7233bf8fc0a04393d0f4e19447290e52755cf0d7de7c4cb
[INFO] running `Command { std: "docker" "start" "-a" "392c0b28a7e5aaa7a7233bf8fc0a04393d0f4e19447290e52755cf0d7de7c4cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling fut-ret v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.45s
[INFO] running `Command { std: "docker" "inspect" "392c0b28a7e5aaa7a7233bf8fc0a04393d0f4e19447290e52755cf0d7de7c4cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "392c0b28a7e5aaa7a7233bf8fc0a04393d0f4e19447290e52755cf0d7de7c4cb", kill_on_drop: false }`
[INFO] [stdout] 392c0b28a7e5aaa7a7233bf8fc0a04393d0f4e19447290e52755cf0d7de7c4cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 5515387a9403268c04e322f139d713c5b889011f521db7b7f3514859e10e2f12
[INFO] running `Command { std: "docker" "start" "-a" "5515387a9403268c04e322f139d713c5b889011f521db7b7f3514859e10e2f12", kill_on_drop: false }`
[INFO] [stderr]    Compiling fut-ret v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "5515387a9403268c04e322f139d713c5b889011f521db7b7f3514859e10e2f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5515387a9403268c04e322f139d713c5b889011f521db7b7f3514859e10e2f12", kill_on_drop: false }`
[INFO] [stdout] 5515387a9403268c04e322f139d713c5b889011f521db7b7f3514859e10e2f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 4fb3c18210363cd1b6fd2990900098526a9b74aa31a4ea498fae4f73d92fa87c
[INFO] running `Command { std: "docker" "start" "-a" "4fb3c18210363cd1b6fd2990900098526a9b74aa31a4ea498fae4f73d92fa87c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fut_ret-b0e12c4068261e2e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fut-ret
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4fb3c18210363cd1b6fd2990900098526a9b74aa31a4ea498fae4f73d92fa87c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fb3c18210363cd1b6fd2990900098526a9b74aa31a4ea498fae4f73d92fa87c", kill_on_drop: false }`
[INFO] [stdout] 4fb3c18210363cd1b6fd2990900098526a9b74aa31a4ea498fae4f73d92fa87c