[INFO] fetching crate corwake 0.1.0...
[INFO] checking corwake-0.1.0 against master#42f4793e5a514858221b07ac379029d90353913e for pr-148952
[INFO] extracting crate corwake 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate corwake 0.1.0
[INFO] finished tweaking crates.io crate corwake 0.1.0
[INFO] tweaked toml for crates.io crate corwake 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate corwake 0.1.0 on toolchain 42f4793e5a514858221b07ac379029d90353913e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate corwake 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" "+42f4793e5a514858221b07ac379029d90353913e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded externref-macro v0.2.0
[INFO] [stderr]   Downloaded externref v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f845e853269e8faff367e234c06c1dfe535ef00cb748af545df3f713301e4f4
[INFO] running `Command { std: "docker" "start" "-a" "8f845e853269e8faff367e234c06c1dfe535ef00cb748af545df3f713301e4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f845e853269e8faff367e234c06c1dfe535ef00cb748af545df3f713301e4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f845e853269e8faff367e234c06c1dfe535ef00cb748af545df3f713301e4f4", kill_on_drop: false }`
[INFO] [stdout] 8f845e853269e8faff367e234c06c1dfe535ef00cb748af545df3f713301e4f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd17daec0452843e52f0cf06808549d9747df75862ff7ba8ce6cde1685ae1952
[INFO] running `Command { std: "docker" "start" "-a" "bd17daec0452843e52f0cf06808549d9747df75862ff7ba8ce6cde1685ae1952", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling externref-macro v0.2.0
[INFO] [stderr]     Checking externref v0.2.0
[INFO] [stderr]     Checking corwake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let w = unsafe { core::task::Waker::new(p0, p1) };
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `core::task::RawWakerVTable`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:25:49
[INFO] [stdout]    |
[INFO] [stdout] 25 |             pub fn new_waker(p0: *const (), p1: &'static RawWakerVTable) -> Resource<Waker>;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let w = unsafe { core::task::Waker::new(p0, p1) };
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `core::task::RawWakerVTable`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:25:49
[INFO] [stdout]    |
[INFO] [stdout] 25 |             pub fn new_waker(p0: *const (), p1: &'static RawWakerVTable) -> Resource<Waker>;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.51s
[INFO] running `Command { std: "docker" "inspect" "bd17daec0452843e52f0cf06808549d9747df75862ff7ba8ce6cde1685ae1952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd17daec0452843e52f0cf06808549d9747df75862ff7ba8ce6cde1685ae1952", kill_on_drop: false }`
[INFO] [stdout] bd17daec0452843e52f0cf06808549d9747df75862ff7ba8ce6cde1685ae1952