[INFO] cloning repository https://github.com/dcb9/dead-simple-counter-win-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dcb9/dead-simple-counter-win-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcb9%2Fdead-simple-counter-win-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcb9%2Fdead-simple-counter-win-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f59c53c86729e8840694a304aa1a6e597be21682 [INFO] checking dcb9/dead-simple-counter-win-rs against master#fce0e74720d199eb7839fdb51af35ac5226da178 for pr-145262 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcb9%2Fdead-simple-counter-win-rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/dcb9/dead-simple-counter-win-rs [INFO] finished tweaking git repo https://github.com/dcb9/dead-simple-counter-win-rs [INFO] tweaked toml for git repo https://github.com/dcb9/dead-simple-counter-win-rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/dcb9/dead-simple-counter-win-rs on toolchain fce0e74720d199eb7839fdb51af35ac5226da178 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/dcb9/dead-simple-counter-win-rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dd356dbe9bb1a0b200ce98aec3fa30ed71df744a8069b82d637c181b5c92c51b [INFO] running `Command { std: "docker" "start" "-a" "dd356dbe9bb1a0b200ce98aec3fa30ed71df744a8069b82d637c181b5c92c51b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dd356dbe9bb1a0b200ce98aec3fa30ed71df744a8069b82d637c181b5c92c51b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd356dbe9bb1a0b200ce98aec3fa30ed71df744a8069b82d637c181b5c92c51b", kill_on_drop: false }` [INFO] [stdout] dd356dbe9bb1a0b200ce98aec3fa30ed71df744a8069b82d637c181b5c92c51b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 66e51d2a4f313db801542c746d8acf11f2d29516e92c484004701ad934e870ff [INFO] running `Command { std: "docker" "start" "-a" "66e51d2a4f313db801542c746d8acf11f2d29516e92c484004701ad934e870ff", kill_on_drop: false }` [INFO] [stderr] Compiling windows_x86_64_gnu v0.52.0 [INFO] [stderr] Checking windows-targets v0.52.0 [INFO] [stderr] Checking windows-core v0.52.0 [INFO] [stderr] Checking windows v0.52.0 [INFO] [stderr] Checking counter v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `Vec` will be dropped [INFO] [stdout] --> src/main.rs:85:84 [INFO] [stdout] | [INFO] [stdout] 85 | let lpstr = s.encode_utf16().chain(::std::iter::once(0)).collect::>().as_mut_ptr(); [INFO] [stdout] | ------------------------------------------------------------------ ^^^^^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `Vec` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_mut_ptr` the `Vec` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: you must make sure that the variable you bind the `Vec` to lives at least as long as the pointer returned by the call to `as_mut_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `Vec` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `Vec` will be dropped [INFO] [stdout] --> src/main.rs:85:84 [INFO] [stdout] | [INFO] [stdout] 85 | let lpstr = s.encode_utf16().chain(::std::iter::once(0)).collect::>().as_mut_ptr(); [INFO] [stdout] | ------------------------------------------------------------------ ^^^^^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `Vec` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_mut_ptr` the `Vec` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: you must make sure that the variable you bind the `Vec` to lives at least as long as the pointer returned by the call to `as_mut_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `Vec` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.44s [INFO] running `Command { std: "docker" "inspect" "66e51d2a4f313db801542c746d8acf11f2d29516e92c484004701ad934e870ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "66e51d2a4f313db801542c746d8acf11f2d29516e92c484004701ad934e870ff", kill_on_drop: false }` [INFO] [stdout] 66e51d2a4f313db801542c746d8acf11f2d29516e92c484004701ad934e870ff