[INFO] fetching crate suborbital 0.12.0...
[INFO] testing suborbital-0.12.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate suborbital 0.12.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate suborbital 0.12.0 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 suborbital 0.12.0
[INFO] finished tweaking crates.io crate suborbital 0.12.0
[INFO] tweaked toml for crates.io crate suborbital 0.12.0 written to /workspace/builds/worker-74/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] d868296894f1ba53eb65b24d9d7b525bc28d723fc33ec3b954b1203c4ad24967
[INFO] running `Command { std: "docker" "start" "-a" "d868296894f1ba53eb65b24d9d7b525bc28d723fc33ec3b954b1203c4ad24967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d868296894f1ba53eb65b24d9d7b525bc28d723fc33ec3b954b1203c4ad24967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d868296894f1ba53eb65b24d9d7b525bc28d723fc33ec3b954b1203c4ad24967", kill_on_drop: false }`
[INFO] [stdout] d868296894f1ba53eb65b24d9d7b525bc28d723fc33ec3b954b1203c4ad24967
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] dcdd6f3b66e746146ff3a620ca664baab9826cc1bdd5e61ea594b916e973cb17
[INFO] running `Command { std: "docker" "start" "-a" "dcdd6f3b66e746146ff3a620ca664baab9826cc1bdd5e61ea594b916e973cb17", kill_on_drop: false }`
[INFO] [stderr]    Compiling suborbital v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `Command { std: "docker" "inspect" "dcdd6f3b66e746146ff3a620ca664baab9826cc1bdd5e61ea594b916e973cb17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcdd6f3b66e746146ff3a620ca664baab9826cc1bdd5e61ea594b916e973cb17", kill_on_drop: false }`
[INFO] [stdout] dcdd6f3b66e746146ff3a620ca664baab9826cc1bdd5e61ea594b916e973cb17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 434716962a76ff462c7e9cb0ce8e0e87646fa9217fb1a7c00c29d7e0fd0366fc
[INFO] running `Command { std: "docker" "start" "-a" "434716962a76ff462c7e9cb0ce8e0e87646fa9217fb1a7c00c29d7e0fd0366fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling suborbital v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "434716962a76ff462c7e9cb0ce8e0e87646fa9217fb1a7c00c29d7e0fd0366fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "434716962a76ff462c7e9cb0ce8e0e87646fa9217fb1a7c00c29d7e0fd0366fc", kill_on_drop: false }`
[INFO] [stdout] 434716962a76ff462c7e9cb0ce8e0e87646fa9217fb1a7c00c29d7e0fd0366fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 278b1b615b5fe3218df56cb0622d51b5341a525921693fbea5ed7d96b56ea3d1
[INFO] running `Command { std: "docker" "start" "-a" "278b1b615b5fe3218df56cb0622d51b5341a525921693fbea5ed7d96b56ea3d1", 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/suborbital-0b9b99b22b899560)
[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] [stderr]    Doc-tests suborbital
[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" "278b1b615b5fe3218df56cb0622d51b5341a525921693fbea5ed7d96b56ea3d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "278b1b615b5fe3218df56cb0622d51b5341a525921693fbea5ed7d96b56ea3d1", kill_on_drop: false }`
[INFO] [stdout] 278b1b615b5fe3218df56cb0622d51b5341a525921693fbea5ed7d96b56ea3d1