[INFO] fetching crate flat 0.0.0...
[INFO] testing flat-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate flat 0.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate flat 0.0.0 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 flat 0.0.0
[INFO] finished tweaking crates.io crate flat 0.0.0
[INFO] tweaked toml for crates.io crate flat 0.0.0 written to /workspace/builds/worker-5/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 822a9ea7a77c6bf861f14046825751fe6ca026393b9a498e32454bc0eb519327
[INFO] running `Command { std: "docker" "start" "-a" "822a9ea7a77c6bf861f14046825751fe6ca026393b9a498e32454bc0eb519327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "822a9ea7a77c6bf861f14046825751fe6ca026393b9a498e32454bc0eb519327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "822a9ea7a77c6bf861f14046825751fe6ca026393b9a498e32454bc0eb519327", kill_on_drop: false }`
[INFO] [stdout] 822a9ea7a77c6bf861f14046825751fe6ca026393b9a498e32454bc0eb519327
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 33016ff1326d18d920930164129f2ab5225ac25b49dff51461614331a508b4d2
[INFO] running `Command { std: "docker" "start" "-a" "33016ff1326d18d920930164129f2ab5225ac25b49dff51461614331a508b4d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling flat v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "33016ff1326d18d920930164129f2ab5225ac25b49dff51461614331a508b4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33016ff1326d18d920930164129f2ab5225ac25b49dff51461614331a508b4d2", kill_on_drop: false }`
[INFO] [stdout] 33016ff1326d18d920930164129f2ab5225ac25b49dff51461614331a508b4d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 537a8031fe3a57fac9ebe5a8a8abae5000769a94adbbe9818268b02ae2ef024a
[INFO] running `Command { std: "docker" "start" "-a" "537a8031fe3a57fac9ebe5a8a8abae5000769a94adbbe9818268b02ae2ef024a", kill_on_drop: false }`
[INFO] [stderr]    Compiling flat v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "537a8031fe3a57fac9ebe5a8a8abae5000769a94adbbe9818268b02ae2ef024a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537a8031fe3a57fac9ebe5a8a8abae5000769a94adbbe9818268b02ae2ef024a", kill_on_drop: false }`
[INFO] [stdout] 537a8031fe3a57fac9ebe5a8a8abae5000769a94adbbe9818268b02ae2ef024a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] c1dac3b67b930c8d1f2725e12166fb6a89ee12db89cec51e0ed6475afd9ee01a
[INFO] running `Command { std: "docker" "start" "-a" "c1dac3b67b930c8d1f2725e12166fb6a89ee12db89cec51e0ed6475afd9ee01a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flat-60f68c6985a2bf36)
[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 flat
[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" "c1dac3b67b930c8d1f2725e12166fb6a89ee12db89cec51e0ed6475afd9ee01a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1dac3b67b930c8d1f2725e12166fb6a89ee12db89cec51e0ed6475afd9ee01a", kill_on_drop: false }`
[INFO] [stdout] c1dac3b67b930c8d1f2725e12166fb6a89ee12db89cec51e0ed6475afd9ee01a