[INFO] updating cached repository mbStavola/Voltaire
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mbStavola/Voltaire
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mbStavola/Voltaire" "work/ex/beta-1.38-1/sources/1.37.0/gh/mbStavola/Voltaire"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mbStavola/Voltaire'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mbStavola/Voltaire" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mbStavola/Voltaire"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mbStavola/Voltaire'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b189f0dfcd55273bc0f36a6e0a235568af223eb8
[INFO] sha for GitHub repo mbStavola/Voltaire: b189f0dfcd55273bc0f36a6e0a235568af223eb8
[INFO] validating manifest of mbStavola/Voltaire 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 mbStavola/Voltaire 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 mbStavola/Voltaire
[INFO] finished frobbing mbStavola/Voltaire
[INFO] frobbed toml for mbStavola/Voltaire written to work/ex/beta-1.38-1/sources/1.37.0/gh/mbStavola/Voltaire/Cargo.toml
[INFO] started frobbing mbStavola/Voltaire
[INFO] finished frobbing mbStavola/Voltaire
[INFO] frobbed toml for mbStavola/Voltaire written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mbStavola/Voltaire/Cargo.toml
[INFO] crate mbStavola/Voltaire already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mbStavola/Voltaire/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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] testing mbStavola/Voltaire 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mbStavola/Voltaire:/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] bfc571228836876ce7a3f6c8625d8111741a8703ab12a9e1e18c95163a90457f
[INFO] running `"docker" "start" "-a" "bfc571228836876ce7a3f6c8625d8111741a8703ab12a9e1e18c95163a90457f"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr] error[E0463]: can't find crate for `clippy`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.0/src/lib.rs:528:39
[INFO] [stderr]     |
[INFO] [stderr] 528 | #![cfg_attr(feature = "lints", plugin(clippy))]
[INFO] [stderr]     |                                       ^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `clap`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bfc571228836876ce7a3f6c8625d8111741a8703ab12a9e1e18c95163a90457f"`
[INFO] running `"docker" "rm" "-f" "bfc571228836876ce7a3f6c8625d8111741a8703ab12a9e1e18c95163a90457f"`
[INFO] [stdout] bfc571228836876ce7a3f6c8625d8111741a8703ab12a9e1e18c95163a90457f