[INFO] cloning repository https://github.com/sabahtalateh/hello_async [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sabahtalateh/hello_async" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cedd7306a8da53fcd0028f9ab8c98329d5003219 [INFO] checking sabahtalateh/hello_async against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async" "/workspace/builds/worker-5/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sabahtalateh/hello_async 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/sabahtalateh/hello_async [INFO] finished tweaking git repo https://github.com/sabahtalateh/hello_async [INFO] tweaked toml for git repo https://github.com/sabahtalateh/hello_async written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/sabahtalateh/hello_async already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b39e7e0aba28b0419c375e894ad8bea3557f120ee46fb77c7d50d17068220b42 [INFO] running `"docker" "start" "-a" "b39e7e0aba28b0419c375e894ad8bea3557f120ee46fb77c7d50d17068220b42"` [INFO] [stderr] Checking futures v0.1.28 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking getrandom v0.1.8 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking rand_core v0.5.0 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking parking_lot_core v0.4.0 [INFO] [stderr] Checking tokio-executor v0.1.8 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-sync v0.1.6 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking tokio-timer v0.2.11 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking hello_async v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `future` [INFO] [stderr] --> src/bin/tokio_ping_pong_2.rs:46:15 [INFO] [stderr] | [INFO] [stderr] 46 | use futures::{future, Future, Sink, Stream}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 1 field [INFO] [stderr] --> src/bin/tokio_echo.rs:33:21 [INFO] [stderr] | [INFO] [stderr] 33 | Ok(amount, _, _) => println!("wrote {} bytes", amount), [INFO] [stderr] | ^^^^^^^^^^^^^^^^ expected 1 field, found 3 [INFO] [stderr] help: missing parenthesis [INFO] [stderr] | [INFO] [stderr] 33 | Ok((amount, _, _)) => println!("wrote {} bytes", amount), [INFO] [stderr] | ^ ^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0023`. [INFO] [stderr] error: could not compile `hello_async`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: unused variable: `yielded` [INFO] [stderr] --> src/bin/tokio_stream_fib.rs:87:13 [INFO] [stderr] | [INFO] [stderr] 87 | let yielded = curr; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_yielded` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_exact` [INFO] [stderr] --> src/bin/tokio_async_read.rs:26:1 [INFO] [stderr] | [INFO] [stderr] 26 | / fn read_exact(reader: R, buffer: T) -> ReadExact [INFO] [stderr] 27 | | where [INFO] [stderr] 28 | | R: AsyncRead, [INFO] [stderr] 29 | | T: AsMut<[u8]>, [INFO] [stderr] ... | [INFO] [stderr] 36 | | })) [INFO] [stderr] 37 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/tokio_io_read8.rs:16:17 [INFO] [stderr] | [INFO] [stderr] 16 | let mut buf = vec![0; 8]; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/bin/tokio_spawn_cout_bytes_read.rs:88:57 [INFO] [stderr] | [INFO] [stderr] 88 | ... tx.send(buf.len()).map_err(|e| io::ErrorKind::Other.into()) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/bin/tokio_spawn_cout_bytes_read.rs:88:57 [INFO] [stderr] | [INFO] [stderr] 88 | ... tx.send(buf.len()).map_err(|e| io::ErrorKind::Other.into()) [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "b39e7e0aba28b0419c375e894ad8bea3557f120ee46fb77c7d50d17068220b42"` [INFO] running `"docker" "rm" "-f" "b39e7e0aba28b0419c375e894ad8bea3557f120ee46fb77c7d50d17068220b42"` [INFO] [stdout] b39e7e0aba28b0419c375e894ad8bea3557f120ee46fb77c7d50d17068220b42