[INFO] fetching crate structopt-derive 0.4.18...
[INFO] checking structopt-derive-0.4.18 against master#fce0e74720d199eb7839fdb51af35ac5226da178 for pr-145262
[INFO] extracting crate structopt-derive 0.4.18 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate structopt-derive 0.4.18
[INFO] finished tweaking crates.io crate structopt-derive 0.4.18
[INFO] tweaked toml for crates.io crate structopt-derive 0.4.18 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate structopt-derive 0.4.18 on toolchain fce0e74720d199eb7839fdb51af35ac5226da178
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "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" "+fce0e74720d199eb7839fdb51af35ac5226da178" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding heck v0.3.3 (available: v0.5.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.105)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fce0e74720d199eb7839fdb51af35ac5226da178" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+fce0e74720d199eb7839fdb51af35ac5226da178" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ca47d1a9175f280c46d95e6900a3c1215f533b4ac8de98a2756db9da58f9cdb
[INFO] running `Command { std: "docker" "start" "-a" "2ca47d1a9175f280c46d95e6900a3c1215f533b4ac8de98a2756db9da58f9cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ca47d1a9175f280c46d95e6900a3c1215f533b4ac8de98a2756db9da58f9cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ca47d1a9175f280c46d95e6900a3c1215f533b4ac8de98a2756db9da58f9cdb", kill_on_drop: false }`
[INFO] [stdout] 2ca47d1a9175f280c46d95e6900a3c1215f533b4ac8de98a2756db9da58f9cdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+fce0e74720d199eb7839fdb51af35ac5226da178" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab7e04c10a5e99cf5bf85174b2dd8741d5aea153a7d940e45f6b0e8cb7bae361
[INFO] running `Command { std: "docker" "start" "-a" "ab7e04c10a5e99cf5bf85174b2dd8741d5aea153a7d940e45f6b0e8cb7bae361", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking structopt-derive v0.4.18 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parse.rs:177:28
[INFO] [stdout]     |
[INFO] [stdout] 177 |                 "about" => (Ok(About(name, None))),
[INFO] [stdout]     |                            ^                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 177 -                 "about" => (Ok(About(name, None))),
[INFO] [stdout] 177 +                 "about" => Ok(About(name, None)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parse.rs:178:29
[INFO] [stdout]     |
[INFO] [stdout] 178 |                 "author" => (Ok(Author(name, None))),
[INFO] [stdout]     |                             ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 178 -                 "author" => (Ok(Author(name, None))),
[INFO] [stdout] 178 +                 "author" => Ok(Author(name, None)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parse.rs:177:28
[INFO] [stdout]     |
[INFO] [stdout] 177 |                 "about" => (Ok(About(name, None))),
[INFO] [stdout]     |                            ^                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 177 -                 "about" => (Ok(About(name, None))),
[INFO] [stdout] 177 +                 "about" => Ok(About(name, None)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parse.rs:178:29
[INFO] [stdout]     |
[INFO] [stdout] 178 |                 "author" => (Ok(Author(name, None))),
[INFO] [stdout]     |                             ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 178 -                 "author" => (Ok(Author(name, None))),
[INFO] [stdout] 178 +                 "author" => Ok(Author(name, None)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parse.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     RenameAllEnv(Ident, LitStr),
[INFO] [stdout]    |     ------------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 30 -     RenameAllEnv(Ident, LitStr),
[INFO] [stdout] 30 +     RenameAllEnv((), LitStr),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parse.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     RenameAll(Ident, LitStr),
[INFO] [stdout]    |     --------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -     RenameAll(Ident, LitStr),
[INFO] [stdout] 31 +     RenameAll((), LitStr),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `eq_token` is never read
[INFO] [stdout]    --> src/parse.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 196 | pub struct ParserSpec {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 197 |     pub kind: Ident,
[INFO] [stdout] 198 |     pub eq_token: Option<Token![=]>,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParserSpec` has a derived impl for the trait `Clone`, 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/lib.rs:777:15
[INFO] [stdout]     |
[INFO] [stdout] 777 |     generics: &Generics,
[INFO] [stdout]     |               ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 778 | ) -> (ImplGenerics, TypeGenerics, TokenStream) {
[INFO] [stdout]     |       ------------  ------------ the same lifetime is hidden here
[INFO] [stdout]     |       |
[INFO] [stdout]     |       the same lifetime is hidden 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] 778 | ) -> (ImplGenerics<'_>, TypeGenerics<'_>, TokenStream) {
[INFO] [stdout]     |                   ++++              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parse.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     RenameAllEnv(Ident, LitStr),
[INFO] [stdout]    |     ------------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 30 -     RenameAllEnv(Ident, LitStr),
[INFO] [stdout] 30 +     RenameAllEnv((), LitStr),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parse.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     RenameAll(Ident, LitStr),
[INFO] [stdout]    |     --------- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -     RenameAll(Ident, LitStr),
[INFO] [stdout] 31 +     RenameAll((), LitStr),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `eq_token` is never read
[INFO] [stdout]    --> src/parse.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 196 | pub struct ParserSpec {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 197 |     pub kind: Ident,
[INFO] [stdout] 198 |     pub eq_token: Option<Token![=]>,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParserSpec` has a derived impl for the trait `Clone`, 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/lib.rs:777:15
[INFO] [stdout]     |
[INFO] [stdout] 777 |     generics: &Generics,
[INFO] [stdout]     |               ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 778 | ) -> (ImplGenerics, TypeGenerics, TokenStream) {
[INFO] [stdout]     |       ------------  ------------ the same lifetime is hidden here
[INFO] [stdout]     |       |
[INFO] [stdout]     |       the same lifetime is hidden 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] 778 | ) -> (ImplGenerics<'_>, TypeGenerics<'_>, TokenStream) {
[INFO] [stdout]     |                   ++++              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.93s
[INFO] running `Command { std: "docker" "inspect" "ab7e04c10a5e99cf5bf85174b2dd8741d5aea153a7d940e45f6b0e8cb7bae361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7e04c10a5e99cf5bf85174b2dd8741d5aea153a7d940e45f6b0e8cb7bae361", kill_on_drop: false }`
[INFO] [stdout] ab7e04c10a5e99cf5bf85174b2dd8741d5aea153a7d940e45f6b0e8cb7bae361
