[INFO] fetching crate nom-xml-derive 0.1.0...
[INFO] checking nom-xml-derive-0.1.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate nom-xml-derive 0.1.0 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nom-xml-derive 0.1.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d96ee0ad67dbe49b5dd80fa54b6f2d05909e7a79ff454b9cdbe49294e77213d
[INFO] running `Command { std: "docker" "start" "-a" "2d96ee0ad67dbe49b5dd80fa54b6f2d05909e7a79ff454b9cdbe49294e77213d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d96ee0ad67dbe49b5dd80fa54b6f2d05909e7a79ff454b9cdbe49294e77213d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d96ee0ad67dbe49b5dd80fa54b6f2d05909e7a79ff454b9cdbe49294e77213d", kill_on_drop: false }`
[INFO] [stdout] 2d96ee0ad67dbe49b5dd80fa54b6f2d05909e7a79ff454b9cdbe49294e77213d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb43f6b76679bee98350c8734b2308af07baa7c81a7c6e0c268b68ba9596e97f
[INFO] running `Command { std: "docker" "start" "-a" "fb43f6b76679bee98350c8734b2308af07baa7c81a7c6e0c268b68ba9596e97f", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.106
[INFO] [stderr]     Checking 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)]` 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] [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)]` 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 `dev` profile [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "fb43f6b76679bee98350c8734b2308af07baa7c81a7c6e0c268b68ba9596e97f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb43f6b76679bee98350c8734b2308af07baa7c81a7c6e0c268b68ba9596e97f", kill_on_drop: false }`
[INFO] [stdout] fb43f6b76679bee98350c8734b2308af07baa7c81a7c6e0c268b68ba9596e97f