[INFO] fetching crate fn_is 0.0.0...
[INFO] testing fn_is-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate fn_is 0.0.0 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate fn_is 0.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fn_is 0.0.0
[INFO] finished tweaking crates.io crate fn_is 0.0.0
[INFO] tweaked toml for crates.io crate fn_is 0.0.0 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b571441b27be1252f3ec0091ddfd4478d147d0e88981676ac90e3e059c118b7
[INFO] running `Command { std: "docker" "start" "-a" "8b571441b27be1252f3ec0091ddfd4478d147d0e88981676ac90e3e059c118b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b571441b27be1252f3ec0091ddfd4478d147d0e88981676ac90e3e059c118b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b571441b27be1252f3ec0091ddfd4478d147d0e88981676ac90e3e059c118b7", kill_on_drop: false }`
[INFO] [stdout] 8b571441b27be1252f3ec0091ddfd4478d147d0e88981676ac90e3e059c118b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95595f864eaa98a7d9710f8c58748a723d73edf764d136670866f6e8c0dbffcd
[INFO] running `Command { std: "docker" "start" "-a" "95595f864eaa98a7d9710f8c58748a723d73edf764d136670866f6e8c0dbffcd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fn_is v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.60s
[INFO] running `Command { std: "docker" "inspect" "95595f864eaa98a7d9710f8c58748a723d73edf764d136670866f6e8c0dbffcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95595f864eaa98a7d9710f8c58748a723d73edf764d136670866f6e8c0dbffcd", kill_on_drop: false }`
[INFO] [stdout] 95595f864eaa98a7d9710f8c58748a723d73edf764d136670866f6e8c0dbffcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61c4fd40639528b4a5ff11a3b5c4071de0e0c4812d9d0ecb4af147f771727992
[INFO] running `Command { std: "docker" "start" "-a" "61c4fd40639528b4a5ff11a3b5c4071de0e0c4812d9d0ecb4af147f771727992", kill_on_drop: false }`
[INFO] [stderr]    Compiling fn_is v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "61c4fd40639528b4a5ff11a3b5c4071de0e0c4812d9d0ecb4af147f771727992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61c4fd40639528b4a5ff11a3b5c4071de0e0c4812d9d0ecb4af147f771727992", kill_on_drop: false }`
[INFO] [stdout] 61c4fd40639528b4a5ff11a3b5c4071de0e0c4812d9d0ecb4af147f771727992
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 43f477dc6bbf58401187f6c3489d663f8693f46e9b5655377416e7ab10a37d6d
[INFO] running `Command { std: "docker" "start" "-a" "43f477dc6bbf58401187f6c3489d663f8693f46e9b5655377416e7ab10a37d6d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fn_is-96d19323cbbc36a0)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fn_is
[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" "43f477dc6bbf58401187f6c3489d663f8693f46e9b5655377416e7ab10a37d6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f477dc6bbf58401187f6c3489d663f8693f46e9b5655377416e7ab10a37d6d", kill_on_drop: false }`
[INFO] [stdout] 43f477dc6bbf58401187f6c3489d663f8693f46e9b5655377416e7ab10a37d6d