[INFO] fetching crate isbn 0.4.0...
[INFO] checking isbn-0.4.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate isbn 0.4.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate isbn 0.4.0
[INFO] finished tweaking crates.io crate isbn 0.4.0
[INFO] tweaked toml for crates.io crate isbn 0.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate isbn 0.4.0 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 15 packages to latest compatible versions
[INFO] [stderr]       Adding codegen v0.1.3 (available: v0.2.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.10.0)
[INFO] [stderr]       Adding quick-xml v0.22.0 (available: v0.38.0)
[INFO] [stderr]       Adding roxmltree v0.14.1 (available: v0.20.0)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 391cbf32f9033f1cd70d159273566267841f1ea98a29a2319d23c3b360f65645
[INFO] running `Command { std: "docker" "start" "-a" "391cbf32f9033f1cd70d159273566267841f1ea98a29a2319d23c3b360f65645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "391cbf32f9033f1cd70d159273566267841f1ea98a29a2319d23c3b360f65645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "391cbf32f9033f1cd70d159273566267841f1ea98a29a2319d23c3b360f65645", kill_on_drop: false }`
[INFO] [stdout] 391cbf32f9033f1cd70d159273566267841f1ea98a29a2319d23c3b360f65645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4696e47fa59be0ac82f8e07db422462b68c58547f9e4e8a5aabd4a2d38b3a8c7
[INFO] running `Command { std: "docker" "start" "-a" "4696e47fa59be0ac82f8e07db422462b68c58547f9e4e8a5aabd4a2d38b3a8c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling xmlparser v0.13.6
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]    Compiling roxmltree v0.14.1
[INFO] [stderr]    Compiling codegen v0.1.3
[INFO] [stderr]    Compiling isbn v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:48:22
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn ean_ucc_group(&self) -> Result<Group, IsbnError> {
[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] 48 |     fn ean_ucc_group(&self) -> Result<Group<'_>, IsbnError> {
[INFO] [stdout]    |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:48:22
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn ean_ucc_group(&self) -> Result<Group, IsbnError> {
[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] 48 |     fn ean_ucc_group(&self) -> Result<Group<'_>, IsbnError> {
[INFO] [stdout]    |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "4696e47fa59be0ac82f8e07db422462b68c58547f9e4e8a5aabd4a2d38b3a8c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4696e47fa59be0ac82f8e07db422462b68c58547f9e4e8a5aabd4a2d38b3a8c7", kill_on_drop: false }`
[INFO] [stdout] 4696e47fa59be0ac82f8e07db422462b68c58547f9e4e8a5aabd4a2d38b3a8c7