[INFO] fetching crate head-empty 0.1.0...
[INFO] testing head-empty-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate head-empty 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate head-empty 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate head-empty 0.1.0
[INFO] finished tweaking crates.io crate head-empty 0.1.0
[INFO] tweaked toml for crates.io crate head-empty 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linkme-impl v0.2.10
[INFO] [stderr]   Downloaded linkme v0.2.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41f7ead2415ee3584adfa8c2160f21c9bd42e79d7d912213a6e59c5770266723
[INFO] running `Command { std: "docker" "start" "-a" "41f7ead2415ee3584adfa8c2160f21c9bd42e79d7d912213a6e59c5770266723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41f7ead2415ee3584adfa8c2160f21c9bd42e79d7d912213a6e59c5770266723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f7ead2415ee3584adfa8c2160f21c9bd42e79d7d912213a6e59c5770266723", kill_on_drop: false }`
[INFO] [stdout] 41f7ead2415ee3584adfa8c2160f21c9bd42e79d7d912213a6e59c5770266723
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e69182f0184c9c86f60d793f61bf49920701e9b834e04f4555cca0bb0b49513
[INFO] running `Command { std: "docker" "start" "-a" "6e69182f0184c9c86f60d793f61bf49920701e9b834e04f4555cca0bb0b49513", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling erased-serde v0.3.20
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling linkme-impl v0.2.10
[INFO] [stderr]    Compiling linkme v0.2.10
[INFO] [stderr]    Compiling head-empty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.69s
[INFO] running `Command { std: "docker" "inspect" "6e69182f0184c9c86f60d793f61bf49920701e9b834e04f4555cca0bb0b49513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e69182f0184c9c86f60d793f61bf49920701e9b834e04f4555cca0bb0b49513", kill_on_drop: false }`
[INFO] [stdout] 6e69182f0184c9c86f60d793f61bf49920701e9b834e04f4555cca0bb0b49513
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5d286621448cf3703333ef485a01442e01f90e5742014d8ec187f801be7f083
[INFO] running `Command { std: "docker" "start" "-a" "f5d286621448cf3703333ef485a01442e01f90e5742014d8ec187f801be7f083", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling head-empty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.97s
[INFO] running `Command { std: "docker" "inspect" "f5d286621448cf3703333ef485a01442e01f90e5742014d8ec187f801be7f083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5d286621448cf3703333ef485a01442e01f90e5742014d8ec187f801be7f083", kill_on_drop: false }`
[INFO] [stdout] f5d286621448cf3703333ef485a01442e01f90e5742014d8ec187f801be7f083
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f7de17ffe7b79534ab29d2d8abc0f90ddcb385761ad80a1a7db64d1408ef86ef
[INFO] running `Command { std: "docker" "start" "-a" "f7de17ffe7b79534ab29d2d8abc0f90ddcb385761ad80a1a7db64d1408ef86ef", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/head_empty-8fc1bcecd22c9c37)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test de::tests::missing_field ... ok
[INFO] [stdout] test de::tests::smoke_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests head-empty
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/compile_tests.rs - compile_tests::_register_empty_call (line 16) - compile fail ... ok
[INFO] [stdout] test src/compile_tests.rs - compile_tests::_cannot_register_external_types (line 32) - compile fail ... ok
[INFO] [stdout] test src/compile_tests.rs - compile_tests::_cannot_registrer_the_same_type_twice (line 21) - compile fail ... ok
[INFO] [stdout] test src/compile_tests.rs - compile_tests::_register_path_test (line 37) ... ok
[INFO] [stdout] test src/lib.rs - register (line 141) ... ok
[INFO] [stdout] test src/compile_tests.rs - compile_tests::_register_commas (line 1) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.19s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f7de17ffe7b79534ab29d2d8abc0f90ddcb385761ad80a1a7db64d1408ef86ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7de17ffe7b79534ab29d2d8abc0f90ddcb385761ad80a1a7db64d1408ef86ef", kill_on_drop: false }`
[INFO] [stdout] f7de17ffe7b79534ab29d2d8abc0f90ddcb385761ad80a1a7db64d1408ef86ef