[INFO] fetching crate exchange 0.0.1...
[INFO] testing exchange-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate exchange 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate exchange 0.0.1 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 exchange 0.0.1
[INFO] finished tweaking crates.io crate exchange 0.0.1
[INFO] tweaked toml for crates.io crate exchange 0.0.1 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] 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] 713d2fa40f6f66bc61045254d09032288bfca1543c497812d9b94a7e3f4633e2
[INFO] running `Command { std: "docker" "start" "-a" "713d2fa40f6f66bc61045254d09032288bfca1543c497812d9b94a7e3f4633e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "713d2fa40f6f66bc61045254d09032288bfca1543c497812d9b94a7e3f4633e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "713d2fa40f6f66bc61045254d09032288bfca1543c497812d9b94a7e3f4633e2", kill_on_drop: false }`
[INFO] [stdout] 713d2fa40f6f66bc61045254d09032288bfca1543c497812d9b94a7e3f4633e2
[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] 3ac3915c1e71a88ba659ecb5efa27c6636783fc6b49f5ef13d02450665381f23
[INFO] running `Command { std: "docker" "start" "-a" "3ac3915c1e71a88ba659ecb5efa27c6636783fc6b49f5ef13d02450665381f23", kill_on_drop: false }`
[INFO] [stderr]    Compiling exchange v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "3ac3915c1e71a88ba659ecb5efa27c6636783fc6b49f5ef13d02450665381f23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac3915c1e71a88ba659ecb5efa27c6636783fc6b49f5ef13d02450665381f23", kill_on_drop: false }`
[INFO] [stdout] 3ac3915c1e71a88ba659ecb5efa27c6636783fc6b49f5ef13d02450665381f23
[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] a922ca94f9b8b57f8c5949ee61a193aa776d4db99e650443e8de3675354a5e54
[INFO] running `Command { std: "docker" "start" "-a" "a922ca94f9b8b57f8c5949ee61a193aa776d4db99e650443e8de3675354a5e54", kill_on_drop: false }`
[INFO] [stderr]    Compiling exchange v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "a922ca94f9b8b57f8c5949ee61a193aa776d4db99e650443e8de3675354a5e54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a922ca94f9b8b57f8c5949ee61a193aa776d4db99e650443e8de3675354a5e54", kill_on_drop: false }`
[INFO] [stdout] a922ca94f9b8b57f8c5949ee61a193aa776d4db99e650443e8de3675354a5e54
[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] bd850ff66bc5304d12c6a2f5f29b93f2ac573885c2244c284939a8c43e88aee4
[INFO] running `Command { std: "docker" "start" "-a" "bd850ff66bc5304d12c6a2f5f29b93f2ac573885c2244c284939a8c43e88aee4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/exchange-8a515cc43d4d87b0)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests exchange
[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 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" "bd850ff66bc5304d12c6a2f5f29b93f2ac573885c2244c284939a8c43e88aee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd850ff66bc5304d12c6a2f5f29b93f2ac573885c2244c284939a8c43e88aee4", kill_on_drop: false }`
[INFO] [stdout] bd850ff66bc5304d12c6a2f5f29b93f2ac573885c2244c284939a8c43e88aee4