[INFO] updating cached repository laopo001/hello_rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/laopo001/hello_rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/laopo001/hello_rust" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/laopo001/hello_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/laopo001/hello_rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/laopo001/hello_rust" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/laopo001/hello_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/laopo001/hello_rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b09992161269335840609a50692ae5bf716f359f [INFO] sha for GitHub repo laopo001/hello_rust: b09992161269335840609a50692ae5bf716f359f [INFO] validating manifest of laopo001/hello_rust on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of laopo001/hello_rust on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing laopo001/hello_rust [INFO] finished frobbing laopo001/hello_rust [INFO] frobbed toml for laopo001/hello_rust written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/laopo001/hello_rust/Cargo.toml [INFO] started frobbing laopo001/hello_rust [INFO] finished frobbing laopo001/hello_rust [INFO] frobbed toml for laopo001/hello_rust written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/laopo001/hello_rust/Cargo.toml [INFO] crate laopo001/hello_rust already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking laopo001/hello_rust against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-0/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/laopo001/hello_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 495dc89e8d7d8f787d8362897f788b1e5a6e19ac8149a7cce8a6ade299b6c2f1 [INFO] running `"docker" "start" "-a" "495dc89e8d7d8f787d8362897f788b1e5a6e19ac8149a7cce8a6ade299b6c2f1"` [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.16 [INFO] [stderr] Checking parking_lot_core v0.4.0 [INFO] [stderr] Checking tokio-threadpool v0.1.14 [INFO] [stderr] Checking h2 v0.1.21 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.16 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.16 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.16 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.16 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio v0.1.21 [INFO] [stderr] Checking hyper v0.12.29 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.16 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.16 [INFO] [stderr] Checking hello_rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:13:17 [INFO] [stderr] | [INFO] [stderr] 13 | type Task = Box; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib2.rs:52:16 [INFO] [stderr] | [INFO] [stderr] 52 | type Job = Box; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib.rs:13:17 [INFO] [stderr] | [INFO] [stderr] 13 | type Task = Box; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lib2.rs:52:16 [INFO] [stderr] | [INFO] [stderr] 52 | type Job = Box; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'static` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sender` [INFO] [stderr] --> src/lib.rs:29:8 [INFO] [stderr] | [INFO] [stderr] 29 | let (sender, receiver) = mpsc::channel::(); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_sender` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `receiver` [INFO] [stderr] --> src/lib.rs:46:20 [INFO] [stderr] | [INFO] [stderr] 46 | fn new(id: usize, receiver: Arc>>) -> Self { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_receiver` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/lib2.rs:36:7 [INFO] [stderr] | [INFO] [stderr] 36 | for i in 0..s { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `NewJob` [INFO] [stderr] --> src/lib.rs:16:2 [INFO] [stderr] | [INFO] [stderr] 16 | NewJob(Task), [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Terminate` [INFO] [stderr] --> src/lib.rs:17:2 [INFO] [stderr] | [INFO] [stderr] 17 | Terminate, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `size` [INFO] [stderr] --> src/lib.rs:22:2 [INFO] [stderr] | [INFO] [stderr] 22 | size: usize, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `workers` [INFO] [stderr] --> src/lib.rs:23:2 [INFO] [stderr] | [INFO] [stderr] 23 | workers: Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `id` [INFO] [stderr] --> src/lib.rs:42:2 [INFO] [stderr] | [INFO] [stderr] 42 | id: usize, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `id` [INFO] [stderr] --> src/lib2.rs:55:2 [INFO] [stderr] | [INFO] [stderr] 55 | id: usize, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib2.rs:68:6 [INFO] [stderr] | [INFO] [stderr] 68 | sender.lock().unwrap().send(()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sender` [INFO] [stderr] --> src/lib.rs:29:8 [INFO] [stderr] | [INFO] [stderr] 29 | let (sender, receiver) = mpsc::channel::(); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_sender` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `receiver` [INFO] [stderr] --> src/lib.rs:46:20 [INFO] [stderr] | [INFO] [stderr] 46 | fn new(id: usize, receiver: Arc>>) -> Self { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_receiver` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/lib2.rs:36:7 [INFO] [stderr] | [INFO] [stderr] 36 | for i in 0..s { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `NewJob` [INFO] [stderr] --> src/lib.rs:16:2 [INFO] [stderr] | [INFO] [stderr] 16 | NewJob(Task), [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Terminate` [INFO] [stderr] --> src/lib.rs:17:2 [INFO] [stderr] | [INFO] [stderr] 17 | Terminate, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `size` [INFO] [stderr] --> src/lib.rs:22:2 [INFO] [stderr] | [INFO] [stderr] 22 | size: usize, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `workers` [INFO] [stderr] --> src/lib.rs:23:2 [INFO] [stderr] | [INFO] [stderr] 23 | workers: Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `id` [INFO] [stderr] --> src/lib.rs:42:2 [INFO] [stderr] | [INFO] [stderr] 42 | id: usize, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `id` [INFO] [stderr] --> src/lib2.rs:55:2 [INFO] [stderr] | [INFO] [stderr] 55 | id: usize, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib2.rs:68:6 [INFO] [stderr] | [INFO] [stderr] 68 | sender.lock().unwrap().send(()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Arc`, `Mutex` [INFO] [stderr] --> src/bin/main3.rs:2:17 [INFO] [stderr] | [INFO] [stderr] 2 | use std::sync::{Arc, mpsc, Mutex}; [INFO] [stderr] | ^^^ ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/bin/main4.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `receiver` [INFO] [stderr] --> src/bin/main4.rs:8:10 [INFO] [stderr] | [INFO] [stderr] 8 | let (s, receiver) = mpsc::channel::(); [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_receiver` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sender` [INFO] [stderr] --> src/bin/main4.rs:10:6 [INFO] [stderr] | [INFO] [stderr] 10 | let sender = s.clone(); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_sender` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/main4.rs:16:7 [INFO] [stderr] | [INFO] [stderr] 16 | let mut c_v = Arc::clone(&vec); [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 `std::result::Result` that must be used [INFO] [stderr] --> src/bin/main4.rs:22:4 [INFO] [stderr] | [INFO] [stderr] 22 | sender.send(i.to_string()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/bin/main4.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `receiver` [INFO] [stderr] --> src/bin/main4.rs:8:10 [INFO] [stderr] | [INFO] [stderr] 8 | let (s, receiver) = mpsc::channel::(); [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_receiver` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sender` [INFO] [stderr] --> src/bin/main4.rs:10:6 [INFO] [stderr] | [INFO] [stderr] 10 | let sender = s.clone(); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_sender` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/main4.rs:16:7 [INFO] [stderr] | [INFO] [stderr] 16 | let mut c_v = Arc::clone(&vec); [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 `std::result::Result` that must be used [INFO] [stderr] --> src/bin/main4.rs:22:4 [INFO] [stderr] | [INFO] [stderr] 22 | sender.send(i.to_string()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Arc`, `Mutex` [INFO] [stderr] --> src/bin/main3.rs:2:17 [INFO] [stderr] | [INFO] [stderr] 2 | use std::sync::{Arc, mpsc, Mutex}; [INFO] [stderr] | ^^^ ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: the feature `futures_api` has been stable since 1.36.0 and no longer requires an attribute to enable [INFO] [stderr] --> src/bin/main2.rs:1:38 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(async_await, await_macro, futures_api)] [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(stable_features)] on by default [INFO] [stderr] [INFO] [stderr] warning: the feature `futures_api` has been stable since 1.36.0 and no longer requires an attribute to enable [INFO] [stderr] --> src/bin/main2.rs:1:38 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(async_await, await_macro, futures_api)] [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(stable_features)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 27.57s [INFO] running `"docker" "inspect" "495dc89e8d7d8f787d8362897f788b1e5a6e19ac8149a7cce8a6ade299b6c2f1"` [INFO] running `"docker" "rm" "-f" "495dc89e8d7d8f787d8362897f788b1e5a6e19ac8149a7cce8a6ade299b6c2f1"` [INFO] [stdout] 495dc89e8d7d8f787d8362897f788b1e5a6e19ac8149a7cce8a6ade299b6c2f1