[INFO] fetching crate serde-double-tag-derive 0.0.4...
[INFO] checking serde-double-tag-derive-0.0.4 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate serde-double-tag-derive 0.0.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate serde-double-tag-derive 0.0.4
[INFO] finished tweaking crates.io crate serde-double-tag-derive 0.0.4
[INFO] tweaked toml for crates.io crate serde-double-tag-derive 0.0.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde-double-tag-derive 0.0.4 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1ebafd49d3e8bd37c3edb6fa91626a327292ec1143b7e1a69fb5d77fd1f6a039
[INFO] running `Command { std: "docker" "start" "-a" "1ebafd49d3e8bd37c3edb6fa91626a327292ec1143b7e1a69fb5d77fd1f6a039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ebafd49d3e8bd37c3edb6fa91626a327292ec1143b7e1a69fb5d77fd1f6a039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ebafd49d3e8bd37c3edb6fa91626a327292ec1143b7e1a69fb5d77fd1f6a039", kill_on_drop: false }`
[INFO] [stdout] 1ebafd49d3e8bd37c3edb6fa91626a327292ec1143b7e1a69fb5d77fd1f6a039
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 3dcced031ef0a5c6a66b25d6f5b9cf57fd663613b9d21c267963690726fad8f8
[INFO] running `Command { std: "docker" "start" "-a" "3dcced031ef0a5c6a66b25d6f5b9cf57fd663613b9d21c267963690726fad8f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.104
[INFO] [stderr]     Checking serde-double-tag-derive v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/util/rename_rule.rs:45:25
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn from_str(input: &str) -> Result<Self, ParseError> {
[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] 45 |     pub fn from_str(input: &str) -> Result<Self, ParseError<'_>> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/util/rename_rule.rs:45:25
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn from_str(input: &str) -> Result<Self, ParseError> {
[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] 45 |     pub fn from_str(input: &str) -> Result<Self, ParseError<'_>> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "3dcced031ef0a5c6a66b25d6f5b9cf57fd663613b9d21c267963690726fad8f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dcced031ef0a5c6a66b25d6f5b9cf57fd663613b9d21c267963690726fad8f8", kill_on_drop: false }`
[INFO] [stdout] 3dcced031ef0a5c6a66b25d6f5b9cf57fd663613b9d21c267963690726fad8f8