[INFO] fetching crate velcro_core 0.5.2...
[INFO] testing velcro_core-0.5.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate velcro_core 0.5.2 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate velcro_core 0.5.2 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 velcro_core 0.5.2
[INFO] finished tweaking crates.io crate velcro_core 0.5.2
[INFO] tweaked toml for crates.io crate velcro_core 0.5.2 written to /workspace/builds/worker-56/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 79ac55a38b18678ff2035681bb2a8a06e2bfb7d639766aacbb9edb6e473b2112
[INFO] running `Command { std: "docker" "start" "-a" "79ac55a38b18678ff2035681bb2a8a06e2bfb7d639766aacbb9edb6e473b2112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79ac55a38b18678ff2035681bb2a8a06e2bfb7d639766aacbb9edb6e473b2112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79ac55a38b18678ff2035681bb2a8a06e2bfb7d639766aacbb9edb6e473b2112", kill_on_drop: false }`
[INFO] [stdout] 79ac55a38b18678ff2035681bb2a8a06e2bfb7d639766aacbb9edb6e473b2112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 789c462eb0f94d84660a89c439d7aecf1b518ba79dedd107b344613fbf496747
[INFO] running `Command { std: "docker" "start" "-a" "789c462eb0f94d84660a89c439d7aecf1b518ba79dedd107b344613fbf496747", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling velcro_core v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.77s
[INFO] running `Command { std: "docker" "inspect" "789c462eb0f94d84660a89c439d7aecf1b518ba79dedd107b344613fbf496747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "789c462eb0f94d84660a89c439d7aecf1b518ba79dedd107b344613fbf496747", kill_on_drop: false }`
[INFO] [stdout] 789c462eb0f94d84660a89c439d7aecf1b518ba79dedd107b344613fbf496747
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 07c5c4401b6be34eea0e70db7752e90d1e2ad306577d57ce0278755001513811
[INFO] running `Command { std: "docker" "start" "-a" "07c5c4401b6be34eea0e70db7752e90d1e2ad306577d57ce0278755001513811", kill_on_drop: false }`
[INFO] [stderr]    Compiling velcro_core v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "07c5c4401b6be34eea0e70db7752e90d1e2ad306577d57ce0278755001513811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07c5c4401b6be34eea0e70db7752e90d1e2ad306577d57ce0278755001513811", kill_on_drop: false }`
[INFO] [stdout] 07c5c4401b6be34eea0e70db7752e90d1e2ad306577d57ce0278755001513811
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] ceb4264cba6910b59111199e313ca391c0ce8bf8fcf87cc6ff7440ed2b85296b
[INFO] running `Command { std: "docker" "start" "-a" "ceb4264cba6910b59111199e313ca391c0ce8bf8fcf87cc6ff7440ed2b85296b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/velcro_core-ef26c80cd7bb5611)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test seq::tests::empty_input_is_simple ... ok
[INFO] [stdout] test seq::tests::parse_empty_input_as_empty_sequence ... ok
[INFO] [stdout] test seq::tests::non_spread_input_is_simple ... ok
[INFO] [stdout] test seq::tests::spread_input_is_not_simple ... ok
[INFO] [stdout] test seq::tests::parse_single_expression_as_one_value_of_one ... ok
[INFO] [stdout] test seq::tests::parse_single_spread_expression_as_one_value_of_many ... ok
[INFO] [stdout] test value::tests::parse_literal_as_one ... ok
[INFO] [stdout] test value::tests::expression_without_spread_is_simple ... ok
[INFO] [stdout] test value::tests::expression_with_spread_is_not_simple ... ok
[INFO] [stdout] test value::tests::parse_spread_simple_expression_as_many ... ok
[INFO] [stdout] test value::tests::spread_with_no_expression_is_error ... ok
[INFO] [stdout] test value::tests::parse_complex_expression_as_one ... ok
[INFO] [stdout] test value::tests::spread_complex_expression_as_many ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests velcro_core
[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" "ceb4264cba6910b59111199e313ca391c0ce8bf8fcf87cc6ff7440ed2b85296b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ceb4264cba6910b59111199e313ca391c0ce8bf8fcf87cc6ff7440ed2b85296b", kill_on_drop: false }`
[INFO] [stdout] ceb4264cba6910b59111199e313ca391c0ce8bf8fcf87cc6ff7440ed2b85296b