[INFO] fetching crate ffi-convert-derive 0.6.2...
[INFO] checking ffi-convert-derive-0.6.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate ffi-convert-derive 0.6.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate ffi-convert-derive 0.6.2
[INFO] finished tweaking crates.io crate ffi-convert-derive 0.6.2
[INFO] tweaked toml for crates.io crate ffi-convert-derive 0.6.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ffi-convert-derive 0.6.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ffi-convert-derive 0.6.2 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ef40bec05a48ec37b878196c4b789c522faae02f9157a544146e345291c9063
[INFO] running `Command { std: "docker" "start" "-a" "6ef40bec05a48ec37b878196c4b789c522faae02f9157a544146e345291c9063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ef40bec05a48ec37b878196c4b789c522faae02f9157a544146e345291c9063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef40bec05a48ec37b878196c4b789c522faae02f9157a544146e345291c9063", kill_on_drop: false }`
[INFO] [stdout] 6ef40bec05a48ec37b878196c4b789c522faae02f9157a544146e345291c9063
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7fa4f050d3cf36bac2ea23b851cbb21a9d331f2e2040331feb3ab6fed11c652
[INFO] running `Command { std: "docker" "start" "-a" "e7fa4f050d3cf36bac2ea23b851cbb21a9d331f2e2040331feb3ab6fed11c652", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking ffi-convert-derive v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/utils.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn parse_struct_fields(data: &syn::Data) -> Vec<Field> {
[INFO] [stdout]    |                                  ^^^^^^^^^^         ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn parse_struct_fields(data: &syn::Data) -> Vec<Field<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/utils.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn parse_struct_fields(data: &syn::Data) -> Vec<Field> {
[INFO] [stdout]    |                                  ^^^^^^^^^^         ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn parse_struct_fields(data: &syn::Data) -> Vec<Field<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/utils.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn parse_field(field: &syn::Field) -> Field {
[INFO] [stdout]    |                           ^^^^^^^^^^^     ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn parse_field(field: &syn::Field) -> Field<'_> {
[INFO] [stdout]    |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/utils.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn parse_field(field: &syn::Field) -> Field {
[INFO] [stdout]    |                           ^^^^^^^^^^^     ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn parse_field(field: &syn::Field) -> Field<'_> {
[INFO] [stdout]    |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "e7fa4f050d3cf36bac2ea23b851cbb21a9d331f2e2040331feb3ab6fed11c652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7fa4f050d3cf36bac2ea23b851cbb21a9d331f2e2040331feb3ab6fed11c652", kill_on_drop: false }`
[INFO] [stdout] e7fa4f050d3cf36bac2ea23b851cbb21a9d331f2e2040331feb3ab6fed11c652