[INFO] fetching crate async_fn 0.0.2...
[INFO] checking async_fn-0.0.2 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate async_fn 0.0.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate async_fn 0.0.2 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate async_fn 0.0.2
[INFO] finished tweaking crates.io crate async_fn 0.0.2
[INFO] tweaked toml for crates.io crate async_fn 0.0.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async_fn-proc_macros v0.0.2
[INFO] [stderr]   Downloaded extreme v666.666.666666
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f25ba9984a73213f67646826a2edd7572112ca46262f3892a4ef9e14fcd705b5
[INFO] running `Command { std: "docker" "start" "-a" "f25ba9984a73213f67646826a2edd7572112ca46262f3892a4ef9e14fcd705b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f25ba9984a73213f67646826a2edd7572112ca46262f3892a4ef9e14fcd705b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f25ba9984a73213f67646826a2edd7572112ca46262f3892a4ef9e14fcd705b5", kill_on_drop: false }`
[INFO] [stdout] f25ba9984a73213f67646826a2edd7572112ca46262f3892a4ef9e14fcd705b5
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cf3a56d6c21c20d72db5ece4ebe00fa28d533063b3a68c0f8bbe8013cc809f6
[INFO] running `Command { std: "docker" "start" "-a" "8cf3a56d6c21c20d72db5ece4ebe00fa28d533063b3a68c0f8bbe8013cc809f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking extreme v666.666.666666
[INFO] [stderr]    Compiling async_fn-proc_macros v0.0.2
[INFO] [stderr]     Checking async_fn v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> tests/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         drop(it);
[INFO] [stdout]    |         ^^^^^--^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `&()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` 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]   --> tests/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         drop(it);
[INFO] [stdout]    |         ^^^^^--^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `&()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "8cf3a56d6c21c20d72db5ece4ebe00fa28d533063b3a68c0f8bbe8013cc809f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cf3a56d6c21c20d72db5ece4ebe00fa28d533063b3a68c0f8bbe8013cc809f6", kill_on_drop: false }`
[INFO] [stdout] 8cf3a56d6c21c20d72db5ece4ebe00fa28d533063b3a68c0f8bbe8013cc809f6
