[INFO] fetching crate veriform_derive 0.2.0...
[INFO] testing veriform_derive-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate veriform_derive 0.2.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate veriform_derive 0.2.0 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 veriform_derive 0.2.0
[INFO] finished tweaking crates.io crate veriform_derive 0.2.0
[INFO] tweaked toml for crates.io crate veriform_derive 0.2.0 written to /workspace/builds/worker-106/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-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 49f88b57ae9d4262a27facd719e1022fb002ddd78333ddab6b74fa4e3d41e263
[INFO] running `Command { std: "docker" "start" "-a" "49f88b57ae9d4262a27facd719e1022fb002ddd78333ddab6b74fa4e3d41e263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49f88b57ae9d4262a27facd719e1022fb002ddd78333ddab6b74fa4e3d41e263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49f88b57ae9d4262a27facd719e1022fb002ddd78333ddab6b74fa4e3d41e263", kill_on_drop: false }`
[INFO] [stdout] 49f88b57ae9d4262a27facd719e1022fb002ddd78333ddab6b74fa4e3d41e263
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 9932e26989dce77d701a4f3440a87e9ef2908bcea16b8f6ec3d466f07611c9b4
[INFO] running `Command { std: "docker" "start" "-a" "9932e26989dce77d701a4f3440a87e9ef2908bcea16b8f6ec3d466f07611c9b4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling veriform_derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.47s
[INFO] running `Command { std: "docker" "inspect" "9932e26989dce77d701a4f3440a87e9ef2908bcea16b8f6ec3d466f07611c9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9932e26989dce77d701a4f3440a87e9ef2908bcea16b8f6ec3d466f07611c9b4", kill_on_drop: false }`
[INFO] [stdout] 9932e26989dce77d701a4f3440a87e9ef2908bcea16b8f6ec3d466f07611c9b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 31966adf0edcca23d0b602ef121a91c4b2ea828ee2122f1db6e998b15ee65b65
[INFO] running `Command { std: "docker" "start" "-a" "31966adf0edcca23d0b602ef121a91c4b2ea828ee2122f1db6e998b15ee65b65", kill_on_drop: false }`
[INFO] [stderr]    Compiling veriform_derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "31966adf0edcca23d0b602ef121a91c4b2ea828ee2122f1db6e998b15ee65b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31966adf0edcca23d0b602ef121a91c4b2ea828ee2122f1db6e998b15ee65b65", kill_on_drop: false }`
[INFO] [stdout] 31966adf0edcca23d0b602ef121a91c4b2ea828ee2122f1db6e998b15ee65b65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 851deeba1db0fa927b8bc98d21b5090882e5fb218c225374deda70d52023acf9
[INFO] running `Command { std: "docker" "start" "-a" "851deeba1db0fa927b8bc98d21b5090882e5fb218c225374deda70d52023acf9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/veriform_derive-7bba0bc952792d0b)
[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 veriform_derive
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/field.rs - field::Attrs (line 15) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "851deeba1db0fa927b8bc98d21b5090882e5fb218c225374deda70d52023acf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "851deeba1db0fa927b8bc98d21b5090882e5fb218c225374deda70d52023acf9", kill_on_drop: false }`
[INFO] [stdout] 851deeba1db0fa927b8bc98d21b5090882e5fb218c225374deda70d52023acf9