[INFO] updating cached repository loveisasea/danceparty-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/loveisasea/danceparty-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/loveisasea/danceparty-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/loveisasea/danceparty-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/loveisasea/danceparty-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/loveisasea/danceparty-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/loveisasea/danceparty-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/loveisasea/danceparty-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 79aa32fa3a7b6f89089b369828dd0027aed415b5
[INFO] sha for GitHub repo loveisasea/danceparty-rust: 79aa32fa3a7b6f89089b369828dd0027aed415b5
[INFO] validating manifest of loveisasea/danceparty-rust 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 loveisasea/danceparty-rust 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 loveisasea/danceparty-rust
[INFO] finished frobbing loveisasea/danceparty-rust
[INFO] frobbed toml for loveisasea/danceparty-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/loveisasea/danceparty-rust/Cargo.toml
[INFO] started frobbing loveisasea/danceparty-rust
[INFO] finished frobbing loveisasea/danceparty-rust
[INFO] frobbed toml for loveisasea/danceparty-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/loveisasea/danceparty-rust/Cargo.toml
[INFO] crate loveisasea/danceparty-rust 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/loveisasea/danceparty-rust/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[INFO] the lockfile is outdated, regenerating it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 loveisasea/danceparty-rust 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-7/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/loveisasea/danceparty-rust:/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] b022a4f9291650ed006b48ede4ac0865e3918de6f46b094bc823c41e80fd9800
[INFO] running `"docker" "start" "-a" "b022a4f9291650ed006b48ede4ac0865e3918de6f46b094bc823c41e80fd9800"`
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling danceParty v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved imports `rand::distributions::IndependentSample`, `rand::distributions::Range`
[INFO] [stderr]  --> src/main.rs:9:27
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::distributions::{IndependentSample, Range};
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^ no `Range` in `distributions`
[INFO] [stderr]   |                           |
[INFO] [stderr]   |                           no `IndependentSample` in `distributions`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:76:12
[INFO] [stderr]    |
[INFO] [stderr] 76 |         for i in (0..dances.len()){
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             for i in (0..senders.len()){
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/main.rs:376:11
[INFO] [stderr]     |
[INFO] [stderr] 376 |     for i in (0..leader_cnt) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/main.rs:379:12
[INFO] [stderr]     |
[INFO] [stderr] 379 |         for j in (0..leader.dance_confirmed.len()) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[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 `danceParty`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b022a4f9291650ed006b48ede4ac0865e3918de6f46b094bc823c41e80fd9800"`
[INFO] running `"docker" "rm" "-f" "b022a4f9291650ed006b48ede4ac0865e3918de6f46b094bc823c41e80fd9800"`
[INFO] [stdout] b022a4f9291650ed006b48ede4ac0865e3918de6f46b094bc823c41e80fd9800