[INFO] crate delta 0.2.0 is already in cache
[INFO] extracting crate delta 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/delta/0.2.0
[INFO] extracting crate delta 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/delta/0.2.0
[INFO] validating manifest of delta-0.2.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of delta-0.2.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing delta-0.2.0
[INFO] finished frobbing delta-0.2.0
[INFO] frobbed toml for delta-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/delta/0.2.0/Cargo.toml
[INFO] started frobbing delta-0.2.0
[INFO] finished frobbing delta-0.2.0
[INFO] frobbed toml for delta-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/delta/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing delta-0.2.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/delta/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 3c0a02378273cdb1600133c56456d521930acc042e9d239709f534e318b5ccaa
[INFO] running `"docker" "start" "-a" "3c0a02378273cdb1600133c56456d521930acc042e9d239709f534e318b5ccaa"`
[INFO] [stderr]    Compiling delta v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "3c0a02378273cdb1600133c56456d521930acc042e9d239709f534e318b5ccaa"`
[INFO] running `"docker" "rm" "-f" "3c0a02378273cdb1600133c56456d521930acc042e9d239709f534e318b5ccaa"`
[INFO] [stdout] 3c0a02378273cdb1600133c56456d521930acc042e9d239709f534e318b5ccaa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/delta/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7987aa6972b68d1200333951941a82efe85b537c01f2c56fba37c1eaa43d48ef
[INFO] running `"docker" "start" "-a" "7987aa6972b68d1200333951941a82efe85b537c01f2c56fba37c1eaa43d48ef"`
[INFO] [stderr]    Compiling delta v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0277]: can't compare `{float}` with `std::time::Duration`
[INFO] [stderr]   --> src/lib.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         assert_eq!(0.0, Timer::new().mark());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `{float} == std::time::Duration`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::cmp::PartialEq<std::time::Duration>` is not implemented for `{float}`
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `delta`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7987aa6972b68d1200333951941a82efe85b537c01f2c56fba37c1eaa43d48ef"`
[INFO] running `"docker" "rm" "-f" "7987aa6972b68d1200333951941a82efe85b537c01f2c56fba37c1eaa43d48ef"`
[INFO] [stdout] 7987aa6972b68d1200333951941a82efe85b537c01f2c56fba37c1eaa43d48ef