[INFO] updating cached repository https://github.com/bunnymatic/histogram-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5e785041e235e03fbec69320e6803972576fde4d
[INFO] checking bunnymatic/histogram-rust against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbunnymatic%2Fhistogram-rust" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bunnymatic/histogram-rust on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bunnymatic/histogram-rust
[INFO] finished tweaking git repo https://github.com/bunnymatic/histogram-rust
[INFO] tweaked toml for git repo https://github.com/bunnymatic/histogram-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/bunnymatic/histogram-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ddc6e6a78945eddbe6b481cde9d81a82a51bec9213612fe9c022831fee398ad0
[INFO] running `"docker" "start" "-a" "ddc6e6a78945eddbe6b481cde9d81a82a51bec9213612fe9c022831fee398ad0"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling structopt-derive v0.2.17
[INFO] [stderr]     Checking structopt v0.2.17
[INFO] [stderr]     Checking histogram v0.1.0 (/opt/rustwide/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[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[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: 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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `histogram`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ddc6e6a78945eddbe6b481cde9d81a82a51bec9213612fe9c022831fee398ad0"`
[INFO] running `"docker" "rm" "-f" "ddc6e6a78945eddbe6b481cde9d81a82a51bec9213612fe9c022831fee398ad0"`
[INFO] [stdout] ddc6e6a78945eddbe6b481cde9d81a82a51bec9213612fe9c022831fee398ad0
