[INFO] fetching crate walrus-macro 0.19.0...
[INFO] testing walrus-macro-0.19.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate walrus-macro 0.19.0 into /workspace/builds/worker-80/source
[INFO] validating manifest of crates.io crate walrus-macro 0.19.0 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 walrus-macro 0.19.0
[INFO] finished tweaking crates.io crate walrus-macro 0.19.0
[INFO] tweaked toml for crates.io crate walrus-macro 0.19.0 written to /workspace/builds/worker-80/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] 30f72475ed768f50b5d8f82180558f2e07103f7362da04ce3d4f6df20f43e850
[INFO] running `Command { std: "docker" "start" "-a" "30f72475ed768f50b5d8f82180558f2e07103f7362da04ce3d4f6df20f43e850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30f72475ed768f50b5d8f82180558f2e07103f7362da04ce3d4f6df20f43e850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30f72475ed768f50b5d8f82180558f2e07103f7362da04ce3d4f6df20f43e850", kill_on_drop: false }`
[INFO] [stdout] 30f72475ed768f50b5d8f82180558f2e07103f7362da04ce3d4f6df20f43e850
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] b4a852358a3f77d36992347a275ce9e6cf31ed74f0dbf86c5cf6eef7455cf8fd
[INFO] running `Command { std: "docker" "start" "-a" "b4a852358a3f77d36992347a275ce9e6cf31ed74f0dbf86c5cf6eef7455cf8fd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling walrus-macro v0.19.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.79s
[INFO] running `Command { std: "docker" "inspect" "b4a852358a3f77d36992347a275ce9e6cf31ed74f0dbf86c5cf6eef7455cf8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a852358a3f77d36992347a275ce9e6cf31ed74f0dbf86c5cf6eef7455cf8fd", kill_on_drop: false }`
[INFO] [stdout] b4a852358a3f77d36992347a275ce9e6cf31ed74f0dbf86c5cf6eef7455cf8fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] f10617802457581de4b81f78579bed4522738e983a758596132e0a0873670e6c
[INFO] running `Command { std: "docker" "start" "-a" "f10617802457581de4b81f78579bed4522738e983a758596132e0a0873670e6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling walrus-macro v0.19.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "f10617802457581de4b81f78579bed4522738e983a758596132e0a0873670e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f10617802457581de4b81f78579bed4522738e983a758596132e0a0873670e6c", kill_on_drop: false }`
[INFO] [stdout] f10617802457581de4b81f78579bed4522738e983a758596132e0a0873670e6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] e0492ffcba36924c275313d9cf6730086d59c33bcd96cf94dc8671e3bb5e3eb5
[INFO] running `Command { std: "docker" "start" "-a" "e0492ffcba36924c275313d9cf6730086d59c33bcd96cf94dc8671e3bb5e3eb5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/walrus_macro-18c82c182415fe40)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests walrus-macro
[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" "e0492ffcba36924c275313d9cf6730086d59c33bcd96cf94dc8671e3bb5e3eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0492ffcba36924c275313d9cf6730086d59c33bcd96cf94dc8671e3bb5e3eb5", kill_on_drop: false }`
[INFO] [stdout] e0492ffcba36924c275313d9cf6730086d59c33bcd96cf94dc8671e3bb5e3eb5