[INFO] fetching crate variant_count 1.1.0...
[INFO] testing variant_count-1.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate variant_count 1.1.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate variant_count 1.1.0 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 variant_count 1.1.0
[INFO] finished tweaking crates.io crate variant_count 1.1.0
[INFO] tweaked toml for crates.io crate variant_count 1.1.0 written to /workspace/builds/worker-30/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] 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-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 5f6e0cb2330b820cb2807ef6766a56ee3d7afe1d99deabea3685256289260bc8
[INFO] running `Command { std: "docker" "start" "-a" "5f6e0cb2330b820cb2807ef6766a56ee3d7afe1d99deabea3685256289260bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f6e0cb2330b820cb2807ef6766a56ee3d7afe1d99deabea3685256289260bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f6e0cb2330b820cb2807ef6766a56ee3d7afe1d99deabea3685256289260bc8", kill_on_drop: false }`
[INFO] [stdout] 5f6e0cb2330b820cb2807ef6766a56ee3d7afe1d99deabea3685256289260bc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] b526b725fca0c96099f955514ce3228dc94e20e1cbc95fe6d1fa1f1f88585840
[INFO] running `Command { std: "docker" "start" "-a" "b526b725fca0c96099f955514ce3228dc94e20e1cbc95fe6d1fa1f1f88585840", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling variant_count v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `Command { std: "docker" "inspect" "b526b725fca0c96099f955514ce3228dc94e20e1cbc95fe6d1fa1f1f88585840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b526b725fca0c96099f955514ce3228dc94e20e1cbc95fe6d1fa1f1f88585840", kill_on_drop: false }`
[INFO] [stdout] b526b725fca0c96099f955514ce3228dc94e20e1cbc95fe6d1fa1f1f88585840
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] b2c07e712620e71041a35122a60e0baa1ebb04855b5ccda55200a7698ba6f283
[INFO] running `Command { std: "docker" "start" "-a" "b2c07e712620e71041a35122a60e0baa1ebb04855b5ccda55200a7698ba6f283", kill_on_drop: false }`
[INFO] [stderr]    Compiling variant_count v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "b2c07e712620e71041a35122a60e0baa1ebb04855b5ccda55200a7698ba6f283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c07e712620e71041a35122a60e0baa1ebb04855b5ccda55200a7698ba6f283", kill_on_drop: false }`
[INFO] [stdout] b2c07e712620e71041a35122a60e0baa1ebb04855b5ccda55200a7698ba6f283
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] bcad652d84097524d23a0a8f39ee57128a873617b27ce839266c665fdeccaf42
[INFO] running `Command { std: "docker" "start" "-a" "bcad652d84097524d23a0a8f39ee57128a873617b27ce839266c665fdeccaf42", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/variant_count-83c0f25d66548773)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/variant_count.rs (/opt/rustwide/target/debug/deps/variant_count-bd89616bded34b7c)
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test variant_count ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests variant_count
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bcad652d84097524d23a0a8f39ee57128a873617b27ce839266c665fdeccaf42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcad652d84097524d23a0a8f39ee57128a873617b27ce839266c665fdeccaf42", kill_on_drop: false }`
[INFO] [stdout] bcad652d84097524d23a0a8f39ee57128a873617b27ce839266c665fdeccaf42