[INFO] fetching crate delta 0.2.1...
[INFO] testing delta-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate delta 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate delta 0.2.1 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 delta 0.2.1
[INFO] finished tweaking crates.io crate delta 0.2.1
[INFO] tweaked toml for crates.io crate delta 0.2.1 written to /workspace/builds/worker-3/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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 41f790dcc315cffa2d319a27b0dadd953173829355a6930494ece97b230b82d5
[INFO] running `Command { std: "docker" "start" "-a" "41f790dcc315cffa2d319a27b0dadd953173829355a6930494ece97b230b82d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41f790dcc315cffa2d319a27b0dadd953173829355a6930494ece97b230b82d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f790dcc315cffa2d319a27b0dadd953173829355a6930494ece97b230b82d5", kill_on_drop: false }`
[INFO] [stdout] 41f790dcc315cffa2d319a27b0dadd953173829355a6930494ece97b230b82d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 4685113cc3621e84fb5d62bfd98b1ad34d16e658bca4a072cb1cdb41ab6a9afe
[INFO] running `Command { std: "docker" "start" "-a" "4685113cc3621e84fb5d62bfd98b1ad34d16e658bca4a072cb1cdb41ab6a9afe", kill_on_drop: false }`
[INFO] [stderr]    Compiling delta v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "4685113cc3621e84fb5d62bfd98b1ad34d16e658bca4a072cb1cdb41ab6a9afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4685113cc3621e84fb5d62bfd98b1ad34d16e658bca4a072cb1cdb41ab6a9afe", kill_on_drop: false }`
[INFO] [stdout] 4685113cc3621e84fb5d62bfd98b1ad34d16e658bca4a072cb1cdb41ab6a9afe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 66ac7131abe34e8a4a3c955a54abad68ae42f313e19568016a2902f46b999fa1
[INFO] running `Command { std: "docker" "start" "-a" "66ac7131abe34e8a4a3c955a54abad68ae42f313e19568016a2902f46b999fa1", kill_on_drop: false }`
[INFO] [stderr]    Compiling delta v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: can't compare `{float}` with `std::time::Duration`
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         assert_eq!(0.0, Timer::new().mark());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `{float} == std::time::Duration`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `PartialEq<std::time::Duration>` is not implemented for `{float}`
[INFO] [stdout]    = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `delta` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "66ac7131abe34e8a4a3c955a54abad68ae42f313e19568016a2902f46b999fa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66ac7131abe34e8a4a3c955a54abad68ae42f313e19568016a2902f46b999fa1", kill_on_drop: false }`
[INFO] [stdout] 66ac7131abe34e8a4a3c955a54abad68ae42f313e19568016a2902f46b999fa1