[INFO] fetching crate bifrost 0.4.0-alpha.2...
[INFO] testing bifrost-0.4.0-alpha.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bifrost 0.4.0-alpha.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate bifrost 0.4.0-alpha.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 bifrost 0.4.0-alpha.2
[INFO] finished tweaking crates.io crate bifrost 0.4.0-alpha.2
[INFO] tweaked toml for crates.io crate bifrost 0.4.0-alpha.2 written to /workspace/builds/worker-14/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]  Downloading crates ...
[INFO] [stderr]   Downloaded bifrost-stun v0.1.0-alpha
[INFO] [stderr]   Downloaded bifrost-sdp v0.1.0
[INFO] [stderr]   Downloaded bifrost-ice v0.1.0-alpha
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2bfa486ab0d8503affb526cfdcbad9db6101a1b85d015704608c9f515e68ebd0
[INFO] running `Command { std: "docker" "start" "-a" "2bfa486ab0d8503affb526cfdcbad9db6101a1b85d015704608c9f515e68ebd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bfa486ab0d8503affb526cfdcbad9db6101a1b85d015704608c9f515e68ebd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bfa486ab0d8503affb526cfdcbad9db6101a1b85d015704608c9f515e68ebd0", kill_on_drop: false }`
[INFO] [stdout] 2bfa486ab0d8503affb526cfdcbad9db6101a1b85d015704608c9f515e68ebd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 39cec6af316e222c356e21a6c8ad33edc9ba77cdf408dbb803d8a27d372b5f13
[INFO] running `Command { std: "docker" "start" "-a" "39cec6af316e222c356e21a6c8ad33edc9ba77cdf408dbb803d8a27d372b5f13", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling vec1 v1.8.0
[INFO] [stderr]    Compiling bifrost-ice v0.1.0-alpha
[INFO] [stderr]    Compiling bifrost-stun v0.1.0-alpha
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling bifrost-sdp v0.1.0
[INFO] [stderr]    Compiling bifrost v0.4.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.17s
[INFO] running `Command { std: "docker" "inspect" "39cec6af316e222c356e21a6c8ad33edc9ba77cdf408dbb803d8a27d372b5f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39cec6af316e222c356e21a6c8ad33edc9ba77cdf408dbb803d8a27d372b5f13", kill_on_drop: false }`
[INFO] [stdout] 39cec6af316e222c356e21a6c8ad33edc9ba77cdf408dbb803d8a27d372b5f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 1d889e00444c0f4c7f30390f141ff328de13c40771dc9ba8fb19790df4ef2e96
[INFO] running `Command { std: "docker" "start" "-a" "1d889e00444c0f4c7f30390f141ff328de13c40771dc9ba8fb19790df4ef2e96", kill_on_drop: false }`
[INFO] [stderr]    Compiling bifrost v0.4.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "1d889e00444c0f4c7f30390f141ff328de13c40771dc9ba8fb19790df4ef2e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d889e00444c0f4c7f30390f141ff328de13c40771dc9ba8fb19790df4ef2e96", kill_on_drop: false }`
[INFO] [stdout] 1d889e00444c0f4c7f30390f141ff328de13c40771dc9ba8fb19790df4ef2e96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] bc7f3967b75d49ff24a2988bc25cb087d3ee41d0aabf072d7e4bc7c3eea1d477
[INFO] running `Command { std: "docker" "start" "-a" "bc7f3967b75d49ff24a2988bc25cb087d3ee41d0aabf072d7e4bc7c3eea1d477", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bifrost-a5d13544afeb414f)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bifrost
[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 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" "bc7f3967b75d49ff24a2988bc25cb087d3ee41d0aabf072d7e4bc7c3eea1d477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7f3967b75d49ff24a2988bc25cb087d3ee41d0aabf072d7e4bc7c3eea1d477", kill_on_drop: false }`
[INFO] [stdout] bc7f3967b75d49ff24a2988bc25cb087d3ee41d0aabf072d7e4bc7c3eea1d477