[INFO] fetching crate arcanist 0.0.2...
[INFO] testing arcanist-0.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate arcanist 0.0.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate arcanist 0.0.2 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 arcanist 0.0.2
[INFO] finished tweaking crates.io crate arcanist 0.0.2
[INFO] tweaked toml for crates.io crate arcanist 0.0.2 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 566fe3e5f8db6e429ee405e52476f8c77030803c7bdd6a2285a76f5722e3e432
[INFO] running `Command { std: "docker" "start" "-a" "566fe3e5f8db6e429ee405e52476f8c77030803c7bdd6a2285a76f5722e3e432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "566fe3e5f8db6e429ee405e52476f8c77030803c7bdd6a2285a76f5722e3e432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "566fe3e5f8db6e429ee405e52476f8c77030803c7bdd6a2285a76f5722e3e432", kill_on_drop: false }`
[INFO] [stdout] 566fe3e5f8db6e429ee405e52476f8c77030803c7bdd6a2285a76f5722e3e432
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 11c79d9f0280a1a3ce6554da56836409c82b35aa546605b69b2ab41942851a2a
[INFO] running `Command { std: "docker" "start" "-a" "11c79d9f0280a1a3ce6554da56836409c82b35aa546605b69b2ab41942851a2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling arcanist v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "11c79d9f0280a1a3ce6554da56836409c82b35aa546605b69b2ab41942851a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11c79d9f0280a1a3ce6554da56836409c82b35aa546605b69b2ab41942851a2a", kill_on_drop: false }`
[INFO] [stdout] 11c79d9f0280a1a3ce6554da56836409c82b35aa546605b69b2ab41942851a2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 2a8dd0a5f151835a820f5c67db965585d32f743456cde4c1d24a1a9bf4d452d8
[INFO] running `Command { std: "docker" "start" "-a" "2a8dd0a5f151835a820f5c67db965585d32f743456cde4c1d24a1a9bf4d452d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling arcanist v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "2a8dd0a5f151835a820f5c67db965585d32f743456cde4c1d24a1a9bf4d452d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a8dd0a5f151835a820f5c67db965585d32f743456cde4c1d24a1a9bf4d452d8", kill_on_drop: false }`
[INFO] [stdout] 2a8dd0a5f151835a820f5c67db965585d32f743456cde4c1d24a1a9bf4d452d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] ed7a8c0fc18d67193feb4a11629db72a2ea2a66e7a4766f7b75008caeaca25cc
[INFO] running `Command { std: "docker" "start" "-a" "ed7a8c0fc18d67193feb4a11629db72a2ea2a66e7a4766f7b75008caeaca25cc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] running 0 tests
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/arcanist-38237670a2239fde)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    Doc-tests arcanist
[INFO] [stdout] 
[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" "ed7a8c0fc18d67193feb4a11629db72a2ea2a66e7a4766f7b75008caeaca25cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed7a8c0fc18d67193feb4a11629db72a2ea2a66e7a4766f7b75008caeaca25cc", kill_on_drop: false }`
[INFO] [stdout] ed7a8c0fc18d67193feb4a11629db72a2ea2a66e7a4766f7b75008caeaca25cc