[INFO] fetching crate winflip 0.1.0... [INFO] checking winflip-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] extracting crate winflip 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate winflip 0.1.0 [INFO] finished tweaking crates.io crate winflip 0.1.0 [INFO] tweaked toml for crates.io crate winflip 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate winflip 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate winflip 0.1.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d559f0c64531c357e23b567cd42f04e16c4568e02f38a0fc216e4f9d88bee19d [INFO] running `Command { std: "docker" "start" "-a" "d559f0c64531c357e23b567cd42f04e16c4568e02f38a0fc216e4f9d88bee19d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d559f0c64531c357e23b567cd42f04e16c4568e02f38a0fc216e4f9d88bee19d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d559f0c64531c357e23b567cd42f04e16c4568e02f38a0fc216e4f9d88bee19d", kill_on_drop: false }` [INFO] [stdout] d559f0c64531c357e23b567cd42f04e16c4568e02f38a0fc216e4f9d88bee19d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e1a91d6973d7d1ea258cae9a5f3971bc1c6f7fa52590ef00e2fbbed9056aefaa [INFO] running `Command { std: "docker" "start" "-a" "e1a91d6973d7d1ea258cae9a5f3971bc1c6f7fa52590ef00e2fbbed9056aefaa", kill_on_drop: false }` [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling x11-dl v2.18.4 [INFO] [stderr] Checking winflip v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/x11.rs:561:14 [INFO] [stdout] | [INFO] [stdout] 561 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/x11.rs:561:14 [INFO] [stdout] | [INFO] [stdout] 561 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `window_title` [INFO] [stdout] --> src/x11.rs:367:13 [INFO] [stdout] | [INFO] [stdout] 367 | let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_window_title` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `window_title` [INFO] [stdout] --> src/x11.rs:367:13 [INFO] [stdout] | [INFO] [stdout] 367 | let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_window_title` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `xl` [INFO] [stdout] --> src/x11.rs:1021:13 [INFO] [stdout] | [INFO] [stdout] 1021 | let xl = xlib::Xlib::open().unwrap(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_xl` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `glx` [INFO] [stdout] --> src/x11.rs:1027:13 [INFO] [stdout] | [INFO] [stdout] 1027 | let glx = glx::Glx::open().unwrap(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_glx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `CString` will be dropped [INFO] [stdout] --> src/x11.rs:367:82 [INFO] [stdout] | [INFO] [stdout] 367 | let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr(); [INFO] [stdout] | --------------------------------- ^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `CString` 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_ptr` the `CString` 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 `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` 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 `CString` will be dropped [INFO] [stdout] --> src/x11.rs:367:82 [INFO] [stdout] | [INFO] [stdout] 367 | let window_title: *const raw::c_char = ffi::CString::new(title).unwrap().as_ptr(); [INFO] [stdout] | --------------------------------- ^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `CString` 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_ptr` the `CString` 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 `CString` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `CString` 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 1.96s [INFO] running `Command { std: "docker" "inspect" "e1a91d6973d7d1ea258cae9a5f3971bc1c6f7fa52590ef00e2fbbed9056aefaa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1a91d6973d7d1ea258cae9a5f3971bc1c6f7fa52590ef00e2fbbed9056aefaa", kill_on_drop: false }` [INFO] [stdout] e1a91d6973d7d1ea258cae9a5f3971bc1c6f7fa52590ef00e2fbbed9056aefaa