[INFO] cloning repository https://github.com/ujjwal3067/MapReduce_Rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ujjwal3067/MapReduce_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fujjwal3067%2FMapReduce_Rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fujjwal3067%2FMapReduce_Rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 725adb18388434c263f3272c647149975cea85cf [INFO] checking ujjwal3067/MapReduce_Rust against try#5cafabc9f16561d7796554d5d241c3068e2bd97f for pr-135852 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fujjwal3067%2FMapReduce_Rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ujjwal3067/MapReduce_Rust on toolchain 5cafabc9f16561d7796554d5d241c3068e2bd97f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ujjwal3067/MapReduce_Rust [INFO] finished tweaking git repo https://github.com/ujjwal3067/MapReduce_Rust [INFO] tweaked toml for git repo https://github.com/ujjwal3067/MapReduce_Rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ujjwal3067/MapReduce_Rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking ujjwal3067/MapReduce_Rust against try#5cafabc9f16561d7796554d5d241c3068e2bd97f for pr-135852 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fujjwal3067%2FMapReduce_Rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ujjwal3067/MapReduce_Rust on toolchain 5cafabc9f16561d7796554d5d241c3068e2bd97f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ujjwal3067/MapReduce_Rust [INFO] finished tweaking git repo https://github.com/ujjwal3067/MapReduce_Rust [INFO] tweaked toml for git repo https://github.com/ujjwal3067/MapReduce_Rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ujjwal3067/MapReduce_Rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1d941a40e2b7b06cdf698d293c66a3beea2ab57c5d039514d15223b2c1d23838 [INFO] running `Command { std: "docker" "start" "-a" "1d941a40e2b7b06cdf698d293c66a3beea2ab57c5d039514d15223b2c1d23838", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1d941a40e2b7b06cdf698d293c66a3beea2ab57c5d039514d15223b2c1d23838", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1d941a40e2b7b06cdf698d293c66a3beea2ab57c5d039514d15223b2c1d23838", kill_on_drop: false }` [INFO] [stdout] 1d941a40e2b7b06cdf698d293c66a3beea2ab57c5d039514d15223b2c1d23838 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 82635a7dbff2f1fe861f523fef5f75d857298e0ba52cab82a1ba3b5477527c6a [INFO] running `Command { std: "docker" "start" "-a" "82635a7dbff2f1fe861f523fef5f75d857298e0ba52cab82a1ba3b5477527c6a", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Checking predicates-core v1.0.3 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Checking termtree v0.2.4 [INFO] [stderr] Checking difflib v0.4.0 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking once_cell v1.12.0 [INFO] [stderr] Checking diff v0.1.12 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking itertools v0.10.3 [INFO] [stderr] Checking predicates-tree v1.0.5 [INFO] [stderr] Checking pretty_assertions v1.2.1 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking predicates v2.1.1 [INFO] [stderr] Checking assert_cmd v2.0.4 [INFO] [stderr] Checking mapreduce v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/threadpool/pool.rs:103:9 [INFO] [stdout] | [INFO] [stdout] 103 | self.sender.send(Message::NewJob(JobsType::Mapper(job))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 103 | let _ = self.sender.send(Message::NewJob(JobsType::Mapper(job))); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/threadpool/pool.rs:131:9 [INFO] [stdout] | [INFO] [stdout] 131 | self.sender.send(Message::NewJob(JobsType::Reducer(job))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 131 | let _ = self.sender.send(Message::NewJob(JobsType::Reducer(job))); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/threadpool/pool.rs:103:9 [INFO] [stdout] | [INFO] [stdout] 103 | self.sender.send(Message::NewJob(JobsType::Mapper(job))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 103 | let _ = self.sender.send(Message::NewJob(JobsType::Mapper(job))); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/threadpool/pool.rs:131:9 [INFO] [stdout] | [INFO] [stdout] 131 | self.sender.send(Message::NewJob(JobsType::Reducer(job))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 131 | let _ = self.sender.send(Message::NewJob(JobsType::Reducer(job))); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `mapreduce` [INFO] [stdout] --> src/main.rs:62:2 [INFO] [stdout] | [INFO] [stdout] 62 | } [INFO] [stdout] | ^ consider adding a `main` function to `src/main.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/threadpool/pool.rs:103:9 [INFO] [stdout] | [INFO] [stdout] 103 | self.sender.send(Message::NewJob(JobsType::Mapper(job))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 103 | let _ = self.sender.send(Message::NewJob(JobsType::Mapper(job))); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/threadpool/pool.rs:131:9 [INFO] [stdout] | [INFO] [stdout] 131 | self.sender.send(Message::NewJob(JobsType::Reducer(job))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 131 | let _ = self.sender.send(Message::NewJob(JobsType::Reducer(job))); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mapreduce` (bin "mapreduce") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "82635a7dbff2f1fe861f523fef5f75d857298e0ba52cab82a1ba3b5477527c6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "82635a7dbff2f1fe861f523fef5f75d857298e0ba52cab82a1ba3b5477527c6a", kill_on_drop: false }` [INFO] [stdout] 82635a7dbff2f1fe861f523fef5f75d857298e0ba52cab82a1ba3b5477527c6a