[INFO] fetching crate embedded-async-timer 0.1.0... [INFO] checking embedded-async-timer-0.1.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate embedded-async-timer 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate embedded-async-timer 0.1.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate embedded-async-timer 0.1.0 [INFO] finished tweaking crates.io crate embedded-async-timer 0.1.0 [INFO] tweaked toml for crates.io crate embedded-async-timer 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 36 packages to latest compatible versions [INFO] [stderr] Adding aligned v0.3.5 (available: v0.4.2) [INFO] [stderr] Adding arraydeque v0.4.5 (available: v0.5.1) [INFO] [stderr] Adding as-slice v0.1.5 (available: v0.2.1) [INFO] [stderr] Adding bare-metal v0.2.5 (available: v1.0.0) [INFO] [stderr] Adding bitfield v0.13.2 (available: v0.17.0) [INFO] [stderr] Adding cast v0.2.7 (available: v0.3.0) [INFO] [stderr] Adding cortex-m v0.6.7 (available: v0.7.7) [INFO] [stderr] Adding cortex-m-rt v0.6.15 (available: v0.7.3) [INFO] [stderr] Adding cortex-m-rt-macros v0.6.15 (available: v0.7.0) [INFO] [stderr] Adding embedded-hal v0.2.7 (available: v1.0.0) [INFO] [stderr] Adding generic-array v0.12.4 (available: v1.1.0) [INFO] [stderr] Adding generic-array v0.13.3 (available: v1.1.0) [INFO] [stderr] Adding generic-array v0.14.7 (available: v1.1.0) [INFO] [stderr] Adding nb v0.1.3 (available: v1.1.0) [INFO] [stderr] Adding r0 v0.2.2 (available: v1.0.0) [INFO] [stderr] Adding rustc_version v0.2.3 (available: v0.4.1) [INFO] [stderr] Adding semver v0.9.0 (available: v1.0.23) [INFO] [stderr] Adding semver-parser v0.7.0 (available: v0.10.2) [INFO] [stderr] Adding stm32f1 v0.9.0 (available: v0.15.1) [INFO] [stderr] Adding stm32f1xx-hal v0.5.3 (available: v0.10.0) [INFO] [stderr] Adding stm32l4 v0.8.0 (available: v0.15.1) [INFO] [stderr] Adding stm32l4xx-hal v0.5.0 (available: v0.7.1) [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.77) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c773230a98ebf9bfd08a367a661eacb8cc5e9efb1b36147b8ea922c80b657e21 [INFO] running `Command { std: "docker" "start" "-a" "c773230a98ebf9bfd08a367a661eacb8cc5e9efb1b36147b8ea922c80b657e21", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c773230a98ebf9bfd08a367a661eacb8cc5e9efb1b36147b8ea922c80b657e21", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c773230a98ebf9bfd08a367a661eacb8cc5e9efb1b36147b8ea922c80b657e21", kill_on_drop: false }` [INFO] [stdout] c773230a98ebf9bfd08a367a661eacb8cc5e9efb1b36147b8ea922c80b657e21 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5b41191fe56dd06313ab9147db350d03b7503e66ad24037a585bf1e097a0e2be [INFO] running `Command { std: "docker" "start" "-a" "5b41191fe56dd06313ab9147db350d03b7503e66ad24037a585bf1e097a0e2be", kill_on_drop: false }` [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling bare-metal v0.2.5 [INFO] [stderr] Compiling cortex-m v0.7.7 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking generic-array v0.12.4 [INFO] [stderr] Checking generic-array v0.13.3 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling cortex-m-rt v0.6.15 [INFO] [stderr] Checking nb v0.1.3 [INFO] [stderr] Checking vcell v0.1.3 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking volatile-register v0.2.2 [INFO] [stderr] Checking embedded-hal v0.2.7 [INFO] [stderr] Compiling cortex-m v0.6.7 [INFO] [stderr] Checking bitfield v0.13.2 [INFO] [stderr] Compiling cast v0.2.7 [INFO] [stderr] Compiling stm32f1 v0.9.0 [INFO] [stderr] Checking r0 v0.2.2 [INFO] [stderr] Compiling arraydeque v0.4.5 [INFO] [stderr] Checking as-slice v0.1.5 [INFO] [stderr] Checking aligned v0.3.5 [INFO] [stderr] Compiling cortex-m-rt-macros v0.6.15 [INFO] [stderr] Checking stm32f1xx-hal v0.5.3 [INFO] [stderr] Checking embedded-async-timer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `Ordering` and `self` [INFO] [stdout] --> src/impls/stm32f103_rtc.rs:4:26 [INFO] [stdout] | [INFO] [stdout] 4 | use core::sync::atomic::{self, Ordering}; [INFO] [stdout] | ^^^^ ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Ordering` and `self` [INFO] [stdout] --> src/impls/stm32f103_rtc.rs:4:26 [INFO] [stdout] | [INFO] [stdout] 4 | use core::sync::atomic::{self, Ordering}; [INFO] [stdout] | ^^^^ ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:83:34 [INFO] [stdout] | [INFO] [stdout] 83 | let result = self.awoken.compare_and_swap(false, true, Ordering::SeqCst); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:181:17 [INFO] [stdout] | [INFO] [stdout] 181 | drop(inner); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut AsyncTimerInner` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 181 - drop(inner); [INFO] [stdout] 181 + let _ = inner; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/util/packed_slab.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | drop(unsafe { &mut *self.buffer[i].as_mut_ptr() }); [INFO] [stdout] | ^^^^^--------------------------------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut T` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 110 - drop(unsafe { &mut *self.buffer[i].as_mut_ptr() }); [INFO] [stdout] 110 + let _ = unsafe { &mut *self.buffer[i].as_mut_ptr() }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead [INFO] [stdout] --> src/lib.rs:83:34 [INFO] [stdout] | [INFO] [stdout] 83 | let result = self.awoken.compare_and_swap(false, true, Ordering::SeqCst); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:181:17 [INFO] [stdout] | [INFO] [stdout] 181 | drop(inner); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut AsyncTimerInner` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 181 - drop(inner); [INFO] [stdout] 181 + let _ = inner; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/util/packed_slab.rs:110:13 [INFO] [stdout] | [INFO] [stdout] 110 | drop(unsafe { &mut *self.buffer[i].as_mut_ptr() }); [INFO] [stdout] | ^^^^^--------------------------------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut T` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 110 - drop(unsafe { &mut *self.buffer[i].as_mut_ptr() }); [INFO] [stdout] 110 + let _ = unsafe { &mut *self.buffer[i].as_mut_ptr() }; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.37s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: stm32f1xx-hal v0.5.3 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "5b41191fe56dd06313ab9147db350d03b7503e66ad24037a585bf1e097a0e2be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5b41191fe56dd06313ab9147db350d03b7503e66ad24037a585bf1e097a0e2be", kill_on_drop: false }` [INFO] [stdout] 5b41191fe56dd06313ab9147db350d03b7503e66ad24037a585bf1e097a0e2be