[INFO] cloning repository https://github.com/nekokuro0xf/workerpool [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nekokuro0xf/workerpool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekokuro0xf%2Fworkerpool"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekokuro0xf%2Fworkerpool'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] ab5f095836f1c52147f6192e65831325f54272c5 [INFO] checking nekokuro0xf/workerpool against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekokuro0xf%2Fworkerpool" "/workspace/builds/worker-0/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nekokuro0xf/workerpool on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/nekokuro0xf/workerpool [INFO] finished tweaking git repo https://github.com/nekokuro0xf/workerpool [INFO] tweaked toml for git repo https://github.com/nekokuro0xf/workerpool written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/nekokuro0xf/workerpool already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 3dd3dae3b709a26e690ff709c14e6079ebd601dbd4cefec5e23618c9e0bbb6db [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "3dd3dae3b709a26e690ff709c14e6079ebd601dbd4cefec5e23618c9e0bbb6db"` [INFO] [stderr] Compiling wasm-bindgen-shared v0.2.44 [INFO] [stderr] Compiling bumpalo v2.4.1 [INFO] [stderr] Compiling wasm-bindgen v0.2.44 [INFO] [stderr] Compiling stdweb-internal-runtime v0.1.4 [INFO] [stderr] Compiling backtrace v0.3.17 [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Compiling serde v1.0.91 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling stdweb v0.4.17 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Compiling serde_derive v1.0.91 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling atty v0.2.11 [INFO] [stderr] Compiling wasm-bindgen-backend v0.2.44 [INFO] [stderr] Compiling failure v0.1.5 [INFO] [stderr] Compiling env_logger v0.6.1 [INFO] [stderr] Compiling wasm-bindgen-macro-support v0.2.44 [INFO] [stderr] Compiling wasm-bindgen-webidl v0.2.44 [INFO] [stderr] Compiling wasm-bindgen-macro v0.2.44 [INFO] [stderr] Compiling stdweb-derive v0.5.1 [INFO] [stderr] Checking js-sys v0.3.21 [INFO] [stderr] Compiling web-sys v0.3.21 [INFO] [stderr] Compiling stdweb-internal-macros v0.2.7 [INFO] [stderr] Checking rust_wasm_workerpool v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:27:24 [INFO] [stderr] | [INFO] [stderr] 27 | let mut worker = Worker::new("./worker.js")?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: could not compile `rust_wasm_workerpool`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stderr] --> src/main.rs:27:24 [INFO] [stderr] | [INFO] [stderr] 27 | let mut worker = Worker::new("./worker.js")?; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()` [INFO] [stderr] | [INFO] [stderr] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stderr] = note: required by `std::ops::Try::from_error` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: could not compile `rust_wasm_workerpool`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "3dd3dae3b709a26e690ff709c14e6079ebd601dbd4cefec5e23618c9e0bbb6db"` [INFO] running `"docker" "rm" "-f" "3dd3dae3b709a26e690ff709c14e6079ebd601dbd4cefec5e23618c9e0bbb6db"` [INFO] [stdout] 3dd3dae3b709a26e690ff709c14e6079ebd601dbd4cefec5e23618c9e0bbb6db