[INFO] crate clap-log-flag 0.2.1 is already in cache
[INFO] extracting crate clap-log-flag 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/clap-log-flag/0.2.1
[INFO] extracting crate clap-log-flag 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/clap-log-flag/0.2.1
[INFO] validating manifest of clap-log-flag-0.2.1 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 clap-log-flag-0.2.1 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 clap-log-flag-0.2.1
[INFO] finished frobbing clap-log-flag-0.2.1
[INFO] frobbed toml for clap-log-flag-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/clap-log-flag/0.2.1/Cargo.toml
[INFO] started frobbing clap-log-flag-0.2.1
[INFO] finished frobbing clap-log-flag-0.2.1
[INFO] frobbed toml for clap-log-flag-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/clap-log-flag/0.2.1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing clap-log-flag-0.2.1 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/clap-log-flag/0.2.1:/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] a14cc99fd6e3e4d9af86158fd93e49295d5d3d56e4dccb2c3ccf902c7c22c7f3
[INFO] running `"docker" "start" "-a" "a14cc99fd6e3e4d9af86158fd93e49295d5d3d56e4dccb2c3ccf902c7c22c7f3"`
[INFO] [stderr]    Compiling clap-log-flag v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "a14cc99fd6e3e4d9af86158fd93e49295d5d3d56e4dccb2c3ccf902c7c22c7f3"`
[INFO] running `"docker" "rm" "-f" "a14cc99fd6e3e4d9af86158fd93e49295d5d3d56e4dccb2c3ccf902c7c22c7f3"`
[INFO] [stdout] a14cc99fd6e3e4d9af86158fd93e49295d5d3d56e4dccb2c3ccf902c7c22c7f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/clap-log-flag/0.2.1:/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] aca62fb07b38908e50440f66e178636a41ac17f6e3eed6d39574585fe7d624a7
[INFO] running `"docker" "start" "-a" "aca62fb07b38908e50440f66e178636a41ac17f6e3eed6d39574585fe7d624a7"`
[INFO] [stderr]    Compiling clap-verbosity-flag v0.2.0
[INFO] [stderr]    Compiling clap-log-flag v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> examples/main.rs:20:20
[INFO] [stderr]    |
[INFO] [stderr] 20 |   args.log.log_all(args.verbose.log_level())?;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    expected enum `std::option::Option`, found enum `log::Level`
[INFO] [stderr]    |                    help: try using a variant of the expected type: `Some(args.verbose.log_level())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::option::Option<log::Level>`
[INFO] [stderr]               found type `log::Level`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `clap-log-flag`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "aca62fb07b38908e50440f66e178636a41ac17f6e3eed6d39574585fe7d624a7"`
[INFO] running `"docker" "rm" "-f" "aca62fb07b38908e50440f66e178636a41ac17f6e3eed6d39574585fe7d624a7"`
[INFO] [stdout] aca62fb07b38908e50440f66e178636a41ac17f6e3eed6d39574585fe7d624a7