[INFO] fetching crate return 0.0.0...
[INFO] testing return-0.0.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate return 0.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate return 0.0.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate return 0.0.0
[INFO] finished tweaking crates.io crate return 0.0.0
[INFO] tweaked toml for crates.io crate return 0.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate return 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3abd26e905f49cf338f65542611c4ec8a9a2e9a98224e0217d6c5145b81e4a94
[INFO] running `Command { std: "docker" "start" "-a" "3abd26e905f49cf338f65542611c4ec8a9a2e9a98224e0217d6c5145b81e4a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3abd26e905f49cf338f65542611c4ec8a9a2e9a98224e0217d6c5145b81e4a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3abd26e905f49cf338f65542611c4ec8a9a2e9a98224e0217d6c5145b81e4a94", kill_on_drop: false }`
[INFO] [stdout] 3abd26e905f49cf338f65542611c4ec8a9a2e9a98224e0217d6c5145b81e4a94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3b174a7a3708c36d770ee56de3f37d7e2e01a35c9cec0018bd2fb7129ff7ede
[INFO] running `Command { std: "docker" "start" "-a" "f3b174a7a3708c36d770ee56de3f37d7e2e01a35c9cec0018bd2fb7129ff7ede", kill_on_drop: false }`
[INFO] [stderr]    Compiling return v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "f3b174a7a3708c36d770ee56de3f37d7e2e01a35c9cec0018bd2fb7129ff7ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b174a7a3708c36d770ee56de3f37d7e2e01a35c9cec0018bd2fb7129ff7ede", kill_on_drop: false }`
[INFO] [stdout] f3b174a7a3708c36d770ee56de3f37d7e2e01a35c9cec0018bd2fb7129ff7ede
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 204766a089d9e534917b13ba97b0540bcae18224aaf3b2302223675eb311c15a
[INFO] running `Command { std: "docker" "start" "-a" "204766a089d9e534917b13ba97b0540bcae18224aaf3b2302223675eb311c15a", kill_on_drop: false }`
[INFO] [stderr]    Compiling return v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "204766a089d9e534917b13ba97b0540bcae18224aaf3b2302223675eb311c15a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "204766a089d9e534917b13ba97b0540bcae18224aaf3b2302223675eb311c15a", kill_on_drop: false }`
[INFO] [stdout] 204766a089d9e534917b13ba97b0540bcae18224aaf3b2302223675eb311c15a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f23c7459c68276c9057576a735f3500142f64e061e08a081d17c2307973758f5
[INFO] running `Command { std: "docker" "start" "-a" "f23c7459c68276c9057576a735f3500142f64e061e08a081d17c2307973758f5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/return-d0f6f57f041e8595)
[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" "f23c7459c68276c9057576a735f3500142f64e061e08a081d17c2307973758f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f23c7459c68276c9057576a735f3500142f64e061e08a081d17c2307973758f5", kill_on_drop: false }`
[INFO] [stdout] f23c7459c68276c9057576a735f3500142f64e061e08a081d17c2307973758f5