[INFO] fetching crate oo-bindgen 0.8.7...
[INFO] checking oo-bindgen-0.8.7 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate oo-bindgen 0.8.7 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate oo-bindgen 0.8.7 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 oo-bindgen 0.8.7
[INFO] finished tweaking crates.io crate oo-bindgen 0.8.7
[INFO] tweaked toml for crates.io crate oo-bindgen 0.8.7 written to /workspace/builds/worker-4-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 59 packages to latest compatible versions
[INFO] [stderr]       Adding heck v0.4.1 (available: v0.5.0)
[INFO] [stderr]       Adding platforms v2.0.0 (available: v3.4.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ad481bc63f36b0f34c030315cbf195e9fcd9aeab00e2b470dd23f8873372e2a1
[INFO] running `Command { std: "docker" "start" "-a" "ad481bc63f36b0f34c030315cbf195e9fcd9aeab00e2b470dd23f8873372e2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad481bc63f36b0f34c030315cbf195e9fcd9aeab00e2b470dd23f8873372e2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad481bc63f36b0f34c030315cbf195e9fcd9aeab00e2b470dd23f8873372e2a1", kill_on_drop: false }`
[INFO] [stdout] ad481bc63f36b0f34c030315cbf195e9fcd9aeab00e2b470dd23f8873372e2a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 804d2a01df8f22c07d7fa8e8909fbc39c2818534992735d18029fe87fef1d320
[INFO] running `Command { std: "docker" "start" "-a" "804d2a01df8f22c07d7fa8e8909fbc39c2818534992735d18029fe87fef1d320", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling platforms v2.0.0
[INFO] [stderr]     Checking object v0.36.4
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking heck v0.4.1
[INFO] [stderr]     Checking dunce v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking oo-bindgen v0.8.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/backend/c/cpp/implementation.rs:480:24
[INFO] [stdout]     |
[INFO] [stdout] 480 |     for constructor in &handle.constructor {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 480 |     while let Some(constructor) = &handle.constructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~           ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 480 |     if let Some(constructor) = &handle.constructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~           ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/backend/c/cpp/implementation.rs:494:23
[INFO] [stdout]     |
[INFO] [stdout] 494 |     for destructor in &handle.destructor {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 494 |     while let Some(destructor) = &handle.destructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~          ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 494 |     if let Some(destructor) = &handle.destructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~          ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/backend/c/cpp/implementation.rs:480:24
[INFO] [stdout]     |
[INFO] [stdout] 480 |     for constructor in &handle.constructor {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 480 |     while let Some(constructor) = &handle.constructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~           ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 480 |     if let Some(constructor) = &handle.constructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~           ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/backend/c/cpp/implementation.rs:494:23
[INFO] [stdout]     |
[INFO] [stdout] 494 |     for destructor in &handle.destructor {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 494 |     while let Some(destructor) = &handle.destructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~          ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 494 |     if let Some(destructor) = &handle.destructor {
[INFO] [stdout]     |     ~~~~~~~~~~~~          ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.09s
[INFO] running `Command { std: "docker" "inspect" "804d2a01df8f22c07d7fa8e8909fbc39c2818534992735d18029fe87fef1d320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804d2a01df8f22c07d7fa8e8909fbc39c2818534992735d18029fe87fef1d320", kill_on_drop: false }`
[INFO] [stdout] 804d2a01df8f22c07d7fa8e8909fbc39c2818534992735d18029fe87fef1d320