[INFO] updating cached repository bunnymatic/histogram-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bunnymatic/histogram-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bunnymatic/histogram-rust" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bunnymatic/histogram-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bunnymatic/histogram-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bunnymatic/histogram-rust" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/bunnymatic/histogram-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/bunnymatic/histogram-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5e785041e235e03fbec69320e6803972576fde4d
[INFO] sha for GitHub repo bunnymatic/histogram-rust: 5e785041e235e03fbec69320e6803972576fde4d
[INFO] validating manifest of bunnymatic/histogram-rust on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bunnymatic/histogram-rust on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bunnymatic/histogram-rust
[INFO] finished frobbing bunnymatic/histogram-rust
[INFO] frobbed toml for bunnymatic/histogram-rust written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bunnymatic/histogram-rust/Cargo.toml
[INFO] started frobbing bunnymatic/histogram-rust
[INFO] finished frobbing bunnymatic/histogram-rust
[INFO] frobbed toml for bunnymatic/histogram-rust written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/bunnymatic/histogram-rust/Cargo.toml
[INFO] crate bunnymatic/histogram-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking bunnymatic/histogram-rust against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/bunnymatic/histogram-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=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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ef496e7bc0e7be43c01377e8df38f0fd7e3d8632409f531a4e892196b358d5cf
[INFO] running `"docker" "start" "-a" "ef496e7bc0e7be43c01377e8df38f0fd7e3d8632409f531a4e892196b358d5cf"`
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling structopt-derive v0.2.17
[INFO] [stderr]     Checking structopt v0.2.17
[INFO] [stderr]     Checking histogram v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: unknown start of token: \
[INFO] [stderr]   --> src/main.rs:24:42
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let words = line.unwrap().split(/\s+/);
[INFO] [stderr]    |                                          ^
[INFO] [stderr] 
[INFO] [stderr] error: expected expression, found `/`
[INFO] [stderr]   --> src/main.rs:24:41
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let words = line.unwrap().split(/\s+/);
[INFO] [stderr]    |                                         ^ expected expression
[INFO] [stderr] 
[INFO] [stderr] error: unknown start of token: \
[INFO] [stderr]   --> src/main.rs:24:42
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let words = line.unwrap().split(/\s+/);
[INFO] [stderr]    |                                          ^
[INFO] [stderr] 
[INFO] [stderr] error: expected expression, found `/`
[INFO] [stderr]   --> src/main.rs:24:41
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let words = line.unwrap().split(/\s+/);
[INFO] [stderr]    |                                         ^ expected expression
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stderr]   --> src/main.rs:20:14
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let fp = File::open(opt.file).unwrap();
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `File`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `BufReader`
[INFO] [stderr]   --> src/main.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let file = BufReader::new(&f);
[INFO] [stderr]    |                ^^^^^^^^^ use of undeclared type or module `BufReader`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stderr]   --> src/main.rs:20:14
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let fp = File::open(opt.file).unwrap();
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `File`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `BufReader`
[INFO] [stderr]   --> src/main.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let file = BufReader::new(&f);
[INFO] [stderr]    |                ^^^^^^^^^ use of undeclared type or module `BufReader`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `f` in this scope
[INFO] [stderr]   --> src/main.rs:22:32
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let file = BufReader::new(&f);
[INFO] [stderr]    |                                ^ help: a local variable with a similar name exists: `fp`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error[E0425]: cannot find value `f` in this scope
[INFO] [stderr]   --> src/main.rs:22:32
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let file = BufReader::new(&f);
[INFO] [stderr]    |                                ^ help: a local variable with a similar name exists: `fp`
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `histogram`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `histogram`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ef496e7bc0e7be43c01377e8df38f0fd7e3d8632409f531a4e892196b358d5cf"`
[INFO] running `"docker" "rm" "-f" "ef496e7bc0e7be43c01377e8df38f0fd7e3d8632409f531a4e892196b358d5cf"`
[INFO] [stdout] ef496e7bc0e7be43c01377e8df38f0fd7e3d8632409f531a4e892196b358d5cf