[INFO] updating cached repository archer884/num_filter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/archer884/num_filter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/archer884/num_filter" "work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/num_filter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/num_filter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/archer884/num_filter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/num_filter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/num_filter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 915c323eccb394f2b4cfdc6c0834791172c3102a
[INFO] sha for GitHub repo archer884/num_filter: 915c323eccb394f2b4cfdc6c0834791172c3102a
[INFO] validating manifest of archer884/num_filter 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 archer884/num_filter 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 archer884/num_filter
[INFO] finished frobbing archer884/num_filter
[INFO] frobbed toml for archer884/num_filter written to work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/num_filter/Cargo.toml
[INFO] started frobbing archer884/num_filter
[INFO] finished frobbing archer884/num_filter
[INFO] frobbed toml for archer884/num_filter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/num_filter/Cargo.toml
[INFO] crate archer884/num_filter 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/archer884/num_filter/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[INFO] the lockfile is outdated, regenerating it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 archer884/num_filter against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/num_filter:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 32106c75dbd7ac15005d51eb98cbf0d8d5bab8ab81a1d9e87c868e545dda870d
[INFO] running `"docker" "start" "-a" "32106c75dbd7ac15005d51eb98cbf0d8d5bab8ab81a1d9e87c868e545dda870d"`
[INFO] [stderr]    Compiling num_filter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved imports `rand::distributions::IndependentSample`, `rand::distributions::Range`
[INFO] [stderr]  --> src/main.rs:2:28
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::distributions::{ IndependentSample, Range };
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^^^  ^^^^^ no `Range` in `distributions`
[INFO] [stderr]   |                            |
[INFO] [stderr]   |                            no `IndependentSample` in `distributions`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> src/main.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::{ Rand };
[INFO] [stderr]   |             ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:16:70
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn random_series<'f, T: Rand, F: FnMut() -> T + 'f>(mut f: F) -> Box<Iterator<Item=T> + 'f> {
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=T> + 'f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `num_filter`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "32106c75dbd7ac15005d51eb98cbf0d8d5bab8ab81a1d9e87c868e545dda870d"`
[INFO] running `"docker" "rm" "-f" "32106c75dbd7ac15005d51eb98cbf0d8d5bab8ab81a1d9e87c868e545dda870d"`
[INFO] [stdout] 32106c75dbd7ac15005d51eb98cbf0d8d5bab8ab81a1d9e87c868e545dda870d