[INFO] cloning repository erik/mittens
[INFO] running `"git" "clone" "--bare" "git://github.com/erik/mittens.git" "work/cache/sources/gh/erik/mittens"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/erik/mittens'...
[INFO] running `"git" "clone" "work/cache/sources/gh/erik/mittens" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/erik/mittens"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/erik/mittens'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/erik/mittens" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/erik/mittens"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/erik/mittens'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed740a6fdb65d1a6d2c4455c4be8466ffc01ff58
[INFO] sha for GitHub repo erik/mittens: ed740a6fdb65d1a6d2c4455c4be8466ffc01ff58
[INFO] validating manifest of erik/mittens on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of erik/mittens on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing erik/mittens
[INFO] finished frobbing erik/mittens
[INFO] frobbed toml for erik/mittens written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/erik/mittens/Cargo.toml
[INFO] started frobbing erik/mittens
[INFO] finished frobbing erik/mittens
[INFO] frobbed toml for erik/mittens written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/erik/mittens/Cargo.toml
[INFO] crate erik/mittens already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/erik/knuckle`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/erik/mittens/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Updating git repository `https://github.com/erik/knuckle`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/erik/knuckle`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing erik/mittens against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/erik/mittens:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 77d561f0a6a88b6546b3f44729d5b485ce18f51367f65572250fd467aee45971
[INFO] running `"docker" "start" "-a" "77d561f0a6a88b6546b3f44729d5b485ce18f51367f65572250fd467aee45971"`
[INFO] [stderr]    Compiling knuckle v0.1.0 (https://github.com/erik/knuckle#9e625b94)
[INFO] [stderr] error: environment variable `OUT_DIR` not defined
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/knuckle-e59566995562bfcf/9e625b9/build.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let out_dir = env!("OUT_DIR");
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `knuckle`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "77d561f0a6a88b6546b3f44729d5b485ce18f51367f65572250fd467aee45971"`
[INFO] running `"docker" "rm" "-f" "77d561f0a6a88b6546b3f44729d5b485ce18f51367f65572250fd467aee45971"`
[INFO] [stdout] 77d561f0a6a88b6546b3f44729d5b485ce18f51367f65572250fd467aee45971