[INFO] fetching crate serde-lwjson 0.2.1...
[INFO] checking serde-lwjson-0.2.1 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate serde-lwjson 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate serde-lwjson 0.2.1
[INFO] finished tweaking crates.io crate serde-lwjson 0.2.1
[INFO] tweaked toml for crates.io crate serde-lwjson 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde-lwjson 0.2.1 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding prettyplease v0.1.25 (available: v0.2.37)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded schemafy_core v0.6.0
[INFO] [stderr]   Downloaded schemafy_lib v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e763695be5d31369eae82828dfe2e370ae2d41792de5796d959eee08decb495
[INFO] running `Command { std: "docker" "start" "-a" "5e763695be5d31369eae82828dfe2e370ae2d41792de5796d959eee08decb495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e763695be5d31369eae82828dfe2e370ae2d41792de5796d959eee08decb495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e763695be5d31369eae82828dfe2e370ae2d41792de5796d959eee08decb495", kill_on_drop: false }`
[INFO] [stdout] 5e763695be5d31369eae82828dfe2e370ae2d41792de5796d959eee08decb495
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7e93fa88d2214bf9c165302f02f4d070742c852e79c2286dd007b512adcf5c4
[INFO] running `Command { std: "docker" "start" "-a" "d7e93fa88d2214bf9c165302f02f4d070742c852e79c2286dd007b512adcf5c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling uriparse v0.6.4
[INFO] [stderr]    Compiling prettyplease v0.1.25
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling schemafy_core v0.6.0
[INFO] [stderr]    Compiling schemafy_lib v0.6.0
[INFO] [stderr]    Compiling serde-lwjson v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lwjson.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for repositories in &self.repositories {
[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] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         while let Some(repositories) = &self.repositories {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         if let Some(repositories) = &self.repositories {
[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/lwjson.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for artifacts in &self.artifacts {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         while let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         if let Some(artifacts) = &self.artifacts {
[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/lwjson.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         for repositories in &self.repositories {
[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] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         while let Some(repositories) = &self.repositories {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 13 -         for repositories in &self.repositories {
[INFO] [stdout] 13 +         if let Some(repositories) = &self.repositories {
[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/lwjson.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |         for artifacts in &self.artifacts {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         while let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 23 -         for artifacts in &self.artifacts {
[INFO] [stdout] 23 +         if let Some(artifacts) = &self.artifacts {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.89s
[INFO] running `Command { std: "docker" "inspect" "d7e93fa88d2214bf9c165302f02f4d070742c852e79c2286dd007b512adcf5c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7e93fa88d2214bf9c165302f02f4d070742c852e79c2286dd007b512adcf5c4", kill_on_drop: false }`
[INFO] [stdout] d7e93fa88d2214bf9c165302f02f4d070742c852e79c2286dd007b512adcf5c4