[INFO] updating cached repository https://github.com/sabahtalateh/tokio_chat_server [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] dd3ac82fc35f7d0197021598b8b47ade28c53ad6 [INFO] checking sabahtalateh/tokio_chat_server against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Ftokio_chat_server" "/workspace/builds/worker-14/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] [stderr] Checking out files: 100% (8/8) Checking out files: 100% (8/8), done. [INFO] validating manifest of git repo https://github.com/sabahtalateh/tokio_chat_server on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/sabahtalateh/tokio_chat_server [INFO] finished tweaking git repo https://github.com/sabahtalateh/tokio_chat_server [INFO] tweaked toml for git repo https://github.com/sabahtalateh/tokio_chat_server written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/sabahtalateh/tokio_chat_server already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] c59145a6d4684c67d5e8b525e028f37d9f8e20a5ea0db2ef95a3370b78110be9 [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" "c59145a6d4684c67d5e8b525e028f37d9f8e20a5ea0db2ef95a3370b78110be9"` [INFO] [stderr] Checking futures v0.1.28 [INFO] [stderr] Checking tokio_chat_server v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> examples/future.rs:44:5 [INFO] [stderr] | [INFO] [stderr] 44 | /// Implicit types declarations in this file can be omitted [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 45 | let my_fut: MyFut = MyFut::new(); [INFO] [stderr] | --------------------------------- rustdoc does not generate documentation for statements [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> examples/future.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | /// Function to use in `AndThen` combinator [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 48 | / let f: fn(i32) -> Result = |val| { [INFO] [stderr] 49 | | println!("done"); [INFO] [stderr] 50 | | Ok(val - 100) [INFO] [stderr] 51 | | }; [INFO] [stderr] | |______- rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> examples/future.rs:53:5 [INFO] [stderr] | [INFO] [stderr] 53 | / /// `AndThen` type returned by `.and_then(closure)` combinator [INFO] [stderr] 54 | | /// implements `Future` too so it can be used as regular future [INFO] [stderr] 55 | | /// [INFO] [stderr] 56 | | /// First generic type parameter is `MyFut` - future that will be polled first [INFO] [stderr] ... | [INFO] [stderr] 62 | | /// Third is a function that will be applied to the `MyFut` result [INFO] [stderr] 63 | | /// It's return type should be the same as second type parameter [INFO] [stderr] | |____________________________________________________________________^ [INFO] [stderr] 64 | let my_fut: AndThen, fn(i32) -> Result> = my_fut.and_then(f); [INFO] [stderr] | --------------------------------------------------------------------------------------------- rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> examples/future.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | / /// `Map` type parameterized with 2 args [INFO] [stderr] 67 | | /// [INFO] [stderr] 68 | | /// First one `AndThen, fn(i32) -> Result>` is a `Future` to map [INFO] [stderr] 69 | | /// [INFO] [stderr] ... | [INFO] [stderr] 74 | | /// for map because semantics of `AndThen` is to run another future once the previous one completes [INFO] [stderr] 75 | | /// and the semantics of `Map` is to map the result of the future from one value to another [INFO] [stderr] | |_______________________________________________________________________________________________^ [INFO] [stderr] 76 | / let my_fut : Map, fn(i32) -> Result>, fn(i32)-> i32>= my_fut.map(|x| { [INFO] [stderr] 77 | | x + 1000 [INFO] [stderr] 78 | | }); [INFO] [stderr] | |_______- rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> examples/future.rs:80:5 [INFO] [stderr] | [INFO] [stderr] 80 | / /// Futures should be run onto an executor [INFO] [stderr] 81 | | /// [INFO] [stderr] 82 | | /// Later we will consider tokio executor instead of [INFO] [stderr] 83 | | /// one provided by the future trait [INFO] [stderr] | |________________________________________^ [INFO] [stderr] 84 | let mut s = spawn(my_fut); [INFO] [stderr] | -------------------------- rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> examples/future.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | /// Wait for the outer future `Map` which will poll `AndThen` which in turn will poll `MyFut` [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 87 | let r = s.wait_future(); [INFO] [stderr] | ------------------------ rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] error[E0601]: `main` function not found in crate `tokio_chat_server` [INFO] [stderr] --> src/main.rs:1:2 [INFO] [stderr] | [INFO] [stderr] 1 | [INFO] [stderr] | ^ consider adding a `main` function to `src/main.rs` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0601`. [INFO] [stderr] error: could not compile `tokio_chat_server`. [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] warning: 6 warnings emitted [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "c59145a6d4684c67d5e8b525e028f37d9f8e20a5ea0db2ef95a3370b78110be9"` [INFO] running `"docker" "rm" "-f" "c59145a6d4684c67d5e8b525e028f37d9f8e20a5ea0db2ef95a3370b78110be9"` [INFO] [stdout] c59145a6d4684c67d5e8b525e028f37d9f8e20a5ea0db2ef95a3370b78110be9