[INFO] fetching crate ts-rs-macros 9.0.1...
[INFO] checking ts-rs-macros-9.0.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate ts-rs-macros 9.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate ts-rs-macros 9.0.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ts-rs-macros 9.0.1
[INFO] finished tweaking crates.io crate ts-rs-macros 9.0.1
[INFO] tweaked toml for crates.io crate ts-rs-macros 9.0.1 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c21fbf6340985b8074f440bf1d85d1ea4a334ad9a92672341178d018d9d39bd9
[INFO] running `Command { std: "docker" "start" "-a" "c21fbf6340985b8074f440bf1d85d1ea4a334ad9a92672341178d018d9d39bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c21fbf6340985b8074f440bf1d85d1ea4a334ad9a92672341178d018d9d39bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c21fbf6340985b8074f440bf1d85d1ea4a334ad9a92672341178d018d9d39bd9", kill_on_drop: false }`
[INFO] [stdout] c21fbf6340985b8074f440bf1d85d1ea4a334ad9a92672341178d018d9d39bd9
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74c5d3b46fc6663e7cc4475fccd50aac79a74ed98ee96fd0502b2f0dfb5f93ee
[INFO] running `Command { std: "docker" "start" "-a" "74c5d3b46fc6663e7cc4475fccd50aac79a74ed98ee96fd0502b2f0dfb5f93ee", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking ts-rs-macros v9.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/attr/field.rs:268:26
[INFO] [stdout]     |
[INFO] [stdout] 268 |                 for g in &mut assoc_ty.generics {
[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] 268 |                 while let Some(g) = &mut assoc_ty.generics {
[INFO] [stdout]     |                 ~~~~~~~~~~~~~~~ ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 268 |                 if let Some(g) = &mut assoc_ty.generics {
[INFO] [stdout]     |                 ~~~~~~~~~~~~ ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/attr/field.rs:268:26
[INFO] [stdout]     |
[INFO] [stdout] 268 |                 for g in &mut assoc_ty.generics {
[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] 268 |                 while let Some(g) = &mut assoc_ty.generics {
[INFO] [stdout]     |                 ~~~~~~~~~~~~~~~ ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 268 |                 if let Some(g) = &mut assoc_ty.generics {
[INFO] [stdout]     |                 ~~~~~~~~~~~~ ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.75s
[INFO] running `Command { std: "docker" "inspect" "74c5d3b46fc6663e7cc4475fccd50aac79a74ed98ee96fd0502b2f0dfb5f93ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74c5d3b46fc6663e7cc4475fccd50aac79a74ed98ee96fd0502b2f0dfb5f93ee", kill_on_drop: false }`
[INFO] [stdout] 74c5d3b46fc6663e7cc4475fccd50aac79a74ed98ee96fd0502b2f0dfb5f93ee