[INFO] fetching crate atsamd-usb-host 0.2.1... [INFO] checking atsamd-usb-host-0.2.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate atsamd-usb-host 0.2.1 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate atsamd-usb-host 0.2.1 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate atsamd-usb-host 0.2.1 [INFO] finished tweaking crates.io crate atsamd-usb-host 0.2.1 [INFO] tweaked toml for crates.io crate atsamd-usb-host 0.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 34 packages to latest compatible versions [INFO] [stderr] Adding aligned v0.3.5 (available: v0.4.2) [INFO] [stderr] Adding as-slice v0.1.5 (available: v0.2.1) [INFO] [stderr] Adding atsamd-hal v0.7.4 (available: v0.17.0) [INFO] [stderr] Adding atsamd21e18a v0.6.0 (available: v0.7.1) [INFO] [stderr] Adding atsamd21g18a v0.6.0 (available: v0.7.1) [INFO] [stderr] Adding atsamd51g19a v0.6.0 (available: v0.7.1) [INFO] [stderr] Adding atsamd51j19a v0.6.0 (available: v0.7.1) [INFO] [stderr] Adding atsamd51j20a v0.6.0 (available: v0.7.1) [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 cortex-m v0.6.7 (available: v0.7.7) [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 paste v0.1.18 (available: v1.0.15) [INFO] [stderr] Adding rand_core v0.5.1 (available: v0.6.4) [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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 88d170c8022615e1a29f49e1c14edb91b123cbf6ee194ebd31ab191f545a9f67 [INFO] running `Command { std: "docker" "start" "-a" "88d170c8022615e1a29f49e1c14edb91b123cbf6ee194ebd31ab191f545a9f67", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "88d170c8022615e1a29f49e1c14edb91b123cbf6ee194ebd31ab191f545a9f67", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "88d170c8022615e1a29f49e1c14edb91b123cbf6ee194ebd31ab191f545a9f67", kill_on_drop: false }` [INFO] [stdout] 88d170c8022615e1a29f49e1c14edb91b123cbf6ee194ebd31ab191f545a9f67 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 67db4eae2fec28003e60ba367b6dcef3b3fb375be00825cb3c2046656dd47e0a [INFO] running `Command { std: "docker" "start" "-a" "67db4eae2fec28003e60ba367b6dcef3b3fb375be00825cb3c2046656dd47e0a", kill_on_drop: false }` [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Compiling cortex-m v0.7.7 [INFO] [stderr] Compiling proc-macro-hack v0.5.20+deprecated [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking vcell v0.1.3 [INFO] [stderr] Checking bitfield v0.13.2 [INFO] [stderr] Compiling cortex-m v0.6.7 [INFO] [stderr] Compiling atsamd21e18a v0.6.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking starb v0.3.1 [INFO] [stderr] Checking usb-host v0.1.3 [INFO] [stderr] Checking generic-array v0.13.3 [INFO] [stderr] Checking generic-array v0.12.4 [INFO] [stderr] Checking nb v0.1.3 [INFO] [stderr] Checking volatile-register v0.2.2 [INFO] [stderr] Checking embedded-hal v0.2.7 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling bare-metal v0.2.5 [INFO] [stderr] Checking as-slice v0.1.5 [INFO] [stderr] Checking aligned v0.3.5 [INFO] [stderr] Compiling paste-impl v0.1.18 [INFO] [stderr] Checking paste v0.1.18 [INFO] [stderr] Checking atsamd-hal v0.7.4 [INFO] [stderr] Checking atsamd-usb-host v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/pipe.rs:647:62 [INFO] [stdout] | [INFO] [stdout] 646 | impl<'a> PipeRegs<'a> { [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] 647 | pub(crate) fn from(host: &'a mut usb::HOST, i: usize) -> PipeRegs { [INFO] [stdout] | ^^^^^^^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/pipe.rs:647:62 [INFO] [stdout] | [INFO] [stdout] 646 | impl<'a> PipeRegs<'a> { [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] 647 | pub(crate) fn from(host: &'a mut usb::HOST, i: usize) -> PipeRegs { [INFO] [stdout] | ^^^^^^^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `bank1` is never read [INFO] [stdout] --> src/pipe.rs:722:9 [INFO] [stdout] | [INFO] [stdout] 720 | pub(crate) struct PipeDesc { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 721 | pub bank0: BankDesc, [INFO] [stdout] 722 | pub bank1: BankDesc, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:171:45 [INFO] [stdout] | [INFO] [stdout] 171 | let (eventr, mut eventw) = unsafe { EVENTS.split() }; [INFO] [stdout] | ^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:289:21 [INFO] [stdout] | [INFO] [stdout] 289 | LAST_TASK_STATE, [INFO] [stdout] | ^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:171:45 [INFO] [stdout] | [INFO] [stdout] 171 | let (eventr, mut eventw) = unsafe { EVENTS.split() }; [INFO] [stdout] | ^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:289:21 [INFO] [stdout] | [INFO] [stdout] 289 | LAST_TASK_STATE, [INFO] [stdout] | ^^^^^^^^^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.19s [INFO] running `Command { std: "docker" "inspect" "67db4eae2fec28003e60ba367b6dcef3b3fb375be00825cb3c2046656dd47e0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "67db4eae2fec28003e60ba367b6dcef3b3fb375be00825cb3c2046656dd47e0a", kill_on_drop: false }` [INFO] [stdout] 67db4eae2fec28003e60ba367b6dcef3b3fb375be00825cb3c2046656dd47e0a