[INFO] updating cached repository Dylan-DPC/thread-lifetime-experiment [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Dylan-DPC/thread-lifetime-experiment [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Dylan-DPC/thread-lifetime-experiment" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Dylan-DPC/thread-lifetime-experiment"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Dylan-DPC/thread-lifetime-experiment'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Dylan-DPC/thread-lifetime-experiment" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Dylan-DPC/thread-lifetime-experiment"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Dylan-DPC/thread-lifetime-experiment'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] e8a4f3f52d9fb0400d8eb2ba5f57911ceef3ba11 [INFO] sha for GitHub repo Dylan-DPC/thread-lifetime-experiment: e8a4f3f52d9fb0400d8eb2ba5f57911ceef3ba11 [INFO] validating manifest of Dylan-DPC/thread-lifetime-experiment on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of Dylan-DPC/thread-lifetime-experiment on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing Dylan-DPC/thread-lifetime-experiment [INFO] finished frobbing Dylan-DPC/thread-lifetime-experiment [INFO] frobbed toml for Dylan-DPC/thread-lifetime-experiment written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Dylan-DPC/thread-lifetime-experiment/Cargo.toml [INFO] started frobbing Dylan-DPC/thread-lifetime-experiment [INFO] finished frobbing Dylan-DPC/thread-lifetime-experiment [INFO] frobbed toml for Dylan-DPC/thread-lifetime-experiment written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Dylan-DPC/thread-lifetime-experiment/Cargo.toml [INFO] crate Dylan-DPC/thread-lifetime-experiment already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] checking Dylan-DPC/thread-lifetime-experiment against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Dylan-DPC/thread-lifetime-experiment:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] c1f2d6b163abfe0ee6daee0b77e77aeff0a94d6d0f2458db178eeb39477bae4e [INFO] running `"docker" "start" "-a" "c1f2d6b163abfe0ee6daee0b77e77aeff0a94d6d0f2458db178eeb39477bae4e"` [INFO] [stderr] Compiling syn v0.15.30 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking page_size v0.4.1 [INFO] [stderr] Compiling serde_derive v1.0.90 [INFO] [stderr] Compiling rental-impl v0.5.2 [INFO] [stderr] Checking serde v1.0.90 [INFO] [stderr] Checking rental v0.5.3 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking hashbrown v0.2.0 [INFO] [stderr] Checking simdjson v0.1.0 (https://github.com/Licenser/simdjson-rs#4d53c41a) [INFO] [stderr] Checking thread-lifetime-experiment v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:62:25 [INFO] [stderr] | [INFO] [stderr] 62 | let mut content = line.unwrap(); [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/main.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | / thread::scope(|t| { [INFO] [stderr] 29 | | let (s1, r1): (Sender, Receiver) = bounded(5); [INFO] [stderr] 30 | | let (s2, r2): (Sender, Receiver) = bounded(5); [INFO] [stderr] 31 | | t.spawn(move |_| { [INFO] [stderr] ... | [INFO] [stderr] 70 | | }); [INFO] [stderr] 71 | | }); [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 `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:53:17 [INFO] [stderr] | [INFO] [stderr] 53 | s2.send(data); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:67:21 [INFO] [stderr] | [INFO] [stderr] 67 | s1.send(value); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:62:25 [INFO] [stderr] | [INFO] [stderr] 62 | let mut content = line.unwrap(); [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/main.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | / thread::scope(|t| { [INFO] [stderr] 29 | | let (s1, r1): (Sender, Receiver) = bounded(5); [INFO] [stderr] 30 | | let (s2, r2): (Sender, Receiver) = bounded(5); [INFO] [stderr] 31 | | t.spawn(move |_| { [INFO] [stderr] ... | [INFO] [stderr] 70 | | }); [INFO] [stderr] 71 | | }); [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 `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:53:17 [INFO] [stderr] | [INFO] [stderr] 53 | s2.send(data); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:67:21 [INFO] [stderr] | [INFO] [stderr] 67 | s1.send(value); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 10s [INFO] running `"docker" "inspect" "c1f2d6b163abfe0ee6daee0b77e77aeff0a94d6d0f2458db178eeb39477bae4e"` [INFO] running `"docker" "rm" "-f" "c1f2d6b163abfe0ee6daee0b77e77aeff0a94d6d0f2458db178eeb39477bae4e"` [INFO] [stdout] c1f2d6b163abfe0ee6daee0b77e77aeff0a94d6d0f2458db178eeb39477bae4e