[INFO] fetching crate synthesis 0.0.0...
[INFO] testing synthesis-0.0.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate synthesis 0.0.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate synthesis 0.0.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-39/source/.cargo/config.toml
[INFO] started tweaking crates.io crate synthesis 0.0.0
[INFO] finished tweaking crates.io crate synthesis 0.0.0
[INFO] tweaked toml for crates.io crate synthesis 0.0.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate crates.io crate synthesis 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f124c9d264c8deff590fb3934c6296e7dc7e78896cb0d188e2ebd926562c816c
[INFO] running `Command { std: "docker" "start" "-a" "f124c9d264c8deff590fb3934c6296e7dc7e78896cb0d188e2ebd926562c816c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f124c9d264c8deff590fb3934c6296e7dc7e78896cb0d188e2ebd926562c816c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f124c9d264c8deff590fb3934c6296e7dc7e78896cb0d188e2ebd926562c816c", kill_on_drop: false }`
[INFO] [stdout] f124c9d264c8deff590fb3934c6296e7dc7e78896cb0d188e2ebd926562c816c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ce8990b181a10deac627531efa5cc196288d7089679d9cca84854a99253d1dd
[INFO] running `Command { std: "docker" "start" "-a" "6ce8990b181a10deac627531efa5cc196288d7089679d9cca84854a99253d1dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling synthesis v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.05s
[INFO] running `Command { std: "docker" "inspect" "6ce8990b181a10deac627531efa5cc196288d7089679d9cca84854a99253d1dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ce8990b181a10deac627531efa5cc196288d7089679d9cca84854a99253d1dd", kill_on_drop: false }`
[INFO] [stdout] 6ce8990b181a10deac627531efa5cc196288d7089679d9cca84854a99253d1dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 611a4cfaec8b3d52e88f7e0ffdc23891418213aa2f3a9b8ddbe893f6c8a6bba6
[INFO] running `Command { std: "docker" "start" "-a" "611a4cfaec8b3d52e88f7e0ffdc23891418213aa2f3a9b8ddbe893f6c8a6bba6", kill_on_drop: false }`
[INFO] [stderr]    Compiling synthesis v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "611a4cfaec8b3d52e88f7e0ffdc23891418213aa2f3a9b8ddbe893f6c8a6bba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "611a4cfaec8b3d52e88f7e0ffdc23891418213aa2f3a9b8ddbe893f6c8a6bba6", kill_on_drop: false }`
[INFO] [stdout] 611a4cfaec8b3d52e88f7e0ffdc23891418213aa2f3a9b8ddbe893f6c8a6bba6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2c29db712dfe20d141887f195bdff78d957878acb9cb384fa67999ba26283410
[INFO] running `Command { std: "docker" "start" "-a" "2c29db712dfe20d141887f195bdff78d957878acb9cb384fa67999ba26283410", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/synthesis-539942a51cd66081)
[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" "2c29db712dfe20d141887f195bdff78d957878acb9cb384fa67999ba26283410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c29db712dfe20d141887f195bdff78d957878acb9cb384fa67999ba26283410", kill_on_drop: false }`
[INFO] [stdout] 2c29db712dfe20d141887f195bdff78d957878acb9cb384fa67999ba26283410