[INFO] fetching crate nom-xml-derive 0.1.0...
[INFO] building nom-xml-derive-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate nom-xml-derive 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate nom-xml-derive 0.1.0
[INFO] finished tweaking crates.io crate nom-xml-derive 0.1.0
[INFO] tweaked toml for crates.io crate nom-xml-derive 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nom-xml-derive 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2369304be1c1de50fd7e9b1b7f7e7c5fd050198264b111da2e9f6825503d98ca
[INFO] running `Command { std: "docker" "start" "-a" "2369304be1c1de50fd7e9b1b7f7e7c5fd050198264b111da2e9f6825503d98ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2369304be1c1de50fd7e9b1b7f7e7c5fd050198264b111da2e9f6825503d98ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2369304be1c1de50fd7e9b1b7f7e7c5fd050198264b111da2e9f6825503d98ca", kill_on_drop: false }`
[INFO] [stdout] 2369304be1c1de50fd7e9b1b7f7e7c5fd050198264b111da2e9f6825503d98ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff171b7e4d8b3548e4d50fd7b357c7c7448d5d26b313a786efc8eac52431d1c1
[INFO] running `Command { std: "docker" "start" "-a" "ff171b7e4d8b3548e4d50fd7b357c7c7448d5d26b313a786efc8eac52431d1c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling nom-xml-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `std_types` is never read
[INFO] [stdout]    --> src/utils/update_field.rs:857:9
[INFO] [stdout]     |
[INFO] [stdout] 840 | pub struct FieldsContextRefs<'a> {
[INFO] [stdout]     |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 857 |     pub std_types: &'a HashSet<Ident>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FieldsContextRefs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/update_field.rs:813:24
[INFO] [stdout]     |
[INFO] [stdout] 813 |     pub fn as_mut_refs(&mut self) -> FieldsContextRefs {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 813 |     pub fn as_mut_refs(&mut self) -> FieldsContextRefs<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OptionField` is never constructed
[INFO] [stdout]   --> src/utils/fields_extraction.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct OptionField;
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "ff171b7e4d8b3548e4d50fd7b357c7c7448d5d26b313a786efc8eac52431d1c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff171b7e4d8b3548e4d50fd7b357c7c7448d5d26b313a786efc8eac52431d1c1", kill_on_drop: false }`
[INFO] [stdout] ff171b7e4d8b3548e4d50fd7b357c7c7448d5d26b313a786efc8eac52431d1c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 827a86b67c6e86c5f7c3ba64f88553fe42f8fabf5be255fd2fbc1ce44b1dabe6
[INFO] running `Command { std: "docker" "start" "-a" "827a86b67c6e86c5f7c3ba64f88553fe42f8fabf5be255fd2fbc1ce44b1dabe6", kill_on_drop: false }`
[INFO] [stderr]    Compiling nom-xml-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `OptionField` is never constructed
[INFO] [stdout]   --> src/utils/fields_extraction.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct OptionField;
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/update_field.rs:813:24
[INFO] [stdout]     |
[INFO] [stdout] 813 |     pub fn as_mut_refs(&mut self) -> FieldsContextRefs {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 813 |     pub fn as_mut_refs(&mut self) -> FieldsContextRefs<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `std_types` is never read
[INFO] [stdout]    --> src/utils/update_field.rs:857:9
[INFO] [stdout]     |
[INFO] [stdout] 840 | pub struct FieldsContextRefs<'a> {
[INFO] [stdout]     |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 857 |     pub std_types: &'a HashSet<Ident>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FieldsContextRefs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OptionField` is never constructed
[INFO] [stdout]   --> src/utils/fields_extraction.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct OptionField;
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `std_types` is never read
[INFO] [stdout]    --> src/utils/update_field.rs:857:9
[INFO] [stdout]     |
[INFO] [stdout] 840 | pub struct FieldsContextRefs<'a> {
[INFO] [stdout]     |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 857 |     pub std_types: &'a HashSet<Ident>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FieldsContextRefs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/update_field.rs:813:24
[INFO] [stdout]     |
[INFO] [stdout] 813 |     pub fn as_mut_refs(&mut self) -> FieldsContextRefs {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 813 |     pub fn as_mut_refs(&mut self) -> FieldsContextRefs<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "827a86b67c6e86c5f7c3ba64f88553fe42f8fabf5be255fd2fbc1ce44b1dabe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827a86b67c6e86c5f7c3ba64f88553fe42f8fabf5be255fd2fbc1ce44b1dabe6", kill_on_drop: false }`
[INFO] [stdout] 827a86b67c6e86c5f7c3ba64f88553fe42f8fabf5be255fd2fbc1ce44b1dabe6
