[INFO] fetching crate system-graph 0.1.0...
[INFO] testing system-graph-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate system-graph 0.1.0 into /workspace/builds/worker-79/source
[INFO] validating manifest of crates.io crate system-graph 0.1.0 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 system-graph 0.1.0
[INFO] finished tweaking crates.io crate system-graph 0.1.0
[INFO] tweaked toml for crates.io crate system-graph 0.1.0 written to /workspace/builds/worker-79/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-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] b974911352c6e5d4acfd7bbbea7b8382fb9b5073aee8ec7f6314878b7985607d
[INFO] running `Command { std: "docker" "start" "-a" "b974911352c6e5d4acfd7bbbea7b8382fb9b5073aee8ec7f6314878b7985607d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b974911352c6e5d4acfd7bbbea7b8382fb9b5073aee8ec7f6314878b7985607d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b974911352c6e5d4acfd7bbbea7b8382fb9b5073aee8ec7f6314878b7985607d", kill_on_drop: false }`
[INFO] [stdout] b974911352c6e5d4acfd7bbbea7b8382fb9b5073aee8ec7f6314878b7985607d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] c9d67fbad90b4e48440cdd936a3ffebc0ad62fcf9048c99f6021871f09d4899d
[INFO] running `Command { std: "docker" "start" "-a" "c9d67fbad90b4e48440cdd936a3ffebc0ad62fcf9048c99f6021871f09d4899d", kill_on_drop: false }`
[INFO] [stderr]    Compiling system-graph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "c9d67fbad90b4e48440cdd936a3ffebc0ad62fcf9048c99f6021871f09d4899d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9d67fbad90b4e48440cdd936a3ffebc0ad62fcf9048c99f6021871f09d4899d", kill_on_drop: false }`
[INFO] [stdout] c9d67fbad90b4e48440cdd936a3ffebc0ad62fcf9048c99f6021871f09d4899d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 36beebfa71ffcb8beb0f2c08e423153fb3f2e7f11701da5b11b551ea0629450a
[INFO] running `Command { std: "docker" "start" "-a" "36beebfa71ffcb8beb0f2c08e423153fb3f2e7f11701da5b11b551ea0629450a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling system-graph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "36beebfa71ffcb8beb0f2c08e423153fb3f2e7f11701da5b11b551ea0629450a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36beebfa71ffcb8beb0f2c08e423153fb3f2e7f11701da5b11b551ea0629450a", kill_on_drop: false }`
[INFO] [stdout] 36beebfa71ffcb8beb0f2c08e423153fb3f2e7f11701da5b11b551ea0629450a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 0806a4d88b3a4a5b3b5da7ab074b6a4277ceb2a33c7e083ec02d54ea88be70b2
[INFO] running `Command { std: "docker" "start" "-a" "0806a4d88b3a4a5b3b5da7ab074b6a4277ceb2a33c7e083ec02d54ea88be70b2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/system_graph-8869ba58f22eae71)
[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 system-graph
[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" "0806a4d88b3a4a5b3b5da7ab074b6a4277ceb2a33c7e083ec02d54ea88be70b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0806a4d88b3a4a5b3b5da7ab074b6a4277ceb2a33c7e083ec02d54ea88be70b2", kill_on_drop: false }`
[INFO] [stdout] 0806a4d88b3a4a5b3b5da7ab074b6a4277ceb2a33c7e083ec02d54ea88be70b2