[INFO] fetching crate mvcc 0.0.1...
[INFO] extracting crate mvcc 0.0.1 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/mvcc/0.0.1
[INFO] extracting crate mvcc 0.0.1 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mvcc/0.0.1
[INFO] validating manifest of mvcc-0.0.1 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 mvcc-0.0.1 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 mvcc-0.0.1
[INFO] finished frobbing mvcc-0.0.1
[INFO] frobbed toml for mvcc-0.0.1 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/mvcc/0.0.1/Cargo.toml
[INFO] started frobbing mvcc-0.0.1
[INFO] finished frobbing mvcc-0.0.1
[INFO] frobbed toml for mvcc-0.0.1 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mvcc/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] building mvcc-0.0.1 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mvcc/0.0.1:/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=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] 41c802bc24a00c4c463e3c1cc5a2b7cf7f895b8c338356ead63cd45af761f611
[INFO] running `"docker" "start" "-a" "41c802bc24a00c4c463e3c1cc5a2b7cf7f895b8c338356ead63cd45af761f611"`
[INFO] [stderr]    Compiling pagetable v0.0.3
[INFO] [stderr]    Compiling pagecache v0.6.0
[INFO] [stderr]    Compiling sled v0.15.21
[INFO] [stderr]    Compiling mvcc v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `sled::DbResult`
[INFO] [stderr]  --> src/db.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 | use sled::{Config, DbResult, Tree};
[INFO] [stderr]   |                    ^^^^^^^^
[INFO] [stderr]   |                    |
[INFO] [stderr]   |                    no `DbResult` in the root
[INFO] [stderr]   |                    help: a similar name exists in the module: `Result`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `mvcc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "41c802bc24a00c4c463e3c1cc5a2b7cf7f895b8c338356ead63cd45af761f611"`
[INFO] running `"docker" "rm" "-f" "41c802bc24a00c4c463e3c1cc5a2b7cf7f895b8c338356ead63cd45af761f611"`
[INFO] [stdout] 41c802bc24a00c4c463e3c1cc5a2b7cf7f895b8c338356ead63cd45af761f611