[INFO] fetching crate structopt-derive 0.4.18...
[INFO] testing structopt-derive-0.4.18 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate structopt-derive 0.4.18 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate structopt-derive 0.4.18 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: v2.0.117)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22b81163433a3357b4b65f3145e16729cb6b52f0adcc3ccb634e0af851a1a521
[INFO] running `Command { std: "docker" "start" "-a" "22b81163433a3357b4b65f3145e16729cb6b52f0adcc3ccb634e0af851a1a521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22b81163433a3357b4b65f3145e16729cb6b52f0adcc3ccb634e0af851a1a521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22b81163433a3357b4b65f3145e16729cb6b52f0adcc3ccb634e0af851a1a521", kill_on_drop: false }`
[INFO] [stdout] 22b81163433a3357b4b65f3145e16729cb6b52f0adcc3ccb634e0af851a1a521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbc6e88e0a00a966067ab71b4aafa26f1331dd260b51bb6e778ae4c9a18b9ff0
[INFO] running `Command { std: "docker" "start" "-a" "cbc6e88e0a00a966067ab71b4aafa26f1331dd260b51bb6e778ae4c9a18b9ff0", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 2.38s
[INFO] running `Command { std: "docker" "inspect" "cbc6e88e0a00a966067ab71b4aafa26f1331dd260b51bb6e778ae4c9a18b9ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc6e88e0a00a966067ab71b4aafa26f1331dd260b51bb6e778ae4c9a18b9ff0", kill_on_drop: false }`
[INFO] [stdout] cbc6e88e0a00a966067ab71b4aafa26f1331dd260b51bb6e778ae4c9a18b9ff0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca83088a776354da820b35ea30cfd21e06301cabcc78993af4705fd82a8c91fa
[INFO] running `Command { std: "docker" "start" "-a" "ca83088a776354da820b35ea30cfd21e06301cabcc78993af4705fd82a8c91fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "ca83088a776354da820b35ea30cfd21e06301cabcc78993af4705fd82a8c91fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca83088a776354da820b35ea30cfd21e06301cabcc78993af4705fd82a8c91fa", kill_on_drop: false }`
[INFO] [stdout] ca83088a776354da820b35ea30cfd21e06301cabcc78993af4705fd82a8c91fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5b2d89be9fbc43e76ef169dd5a6a11e2c098dc82a632ec72d4ff83757d3d9596
[INFO] running `Command { std: "docker" "start" "-a" "5b2d89be9fbc43e76ef169dd5a6a11e2c098dc82a632ec72d4ff83757d3d9596", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around match arm expression
[INFO] [stderr]    --> src/parse.rs:177:28
[INFO] [stderr]     |
[INFO] [stderr] 177 |                 "about" => (Ok(About(name, None))),
[INFO] [stderr]     |                            ^                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 177 -                 "about" => (Ok(About(name, None))),
[INFO] [stderr] 177 +                 "about" => Ok(About(name, None)) ,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around match arm expression
[INFO] [stderr]    --> src/parse.rs:178:29
[INFO] [stderr]     |
[INFO] [stderr] 178 |                 "author" => (Ok(Author(name, None))),
[INFO] [stderr]     |                             ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 178 -                 "author" => (Ok(Author(name, None))),
[INFO] [stderr] 178 +                 "author" => Ok(Author(name, None)) ,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/parse.rs:30:18
[INFO] [stderr]    |
[INFO] [stderr] 30 |     RenameAllEnv(Ident, LitStr),
[INFO] [stderr]    |     ------------ ^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 30 -     RenameAllEnv(Ident, LitStr),
[INFO] [stderr] 30 +     RenameAllEnv((), LitStr),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/parse.rs:31:15
[INFO] [stderr]    |
[INFO] [stderr] 31 |     RenameAll(Ident, LitStr),
[INFO] [stderr]    |     --------- ^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 31 -     RenameAll(Ident, LitStr),
[INFO] [stderr] 31 +     RenameAll((), LitStr),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `eq_token` is never read
[INFO] [stderr]    --> src/parse.rs:198:9
[INFO] [stderr]     |
[INFO] [stderr] 196 | pub struct ParserSpec {
[INFO] [stderr]     |            ---------- field in this struct
[INFO] [stderr] 197 |     pub kind: Ident,
[INFO] [stderr] 198 |     pub eq_token: Option<Token![=]>,
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ParserSpec` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:777:15
[INFO] [stderr]     |
[INFO] [stderr] 777 |     generics: &Generics,
[INFO] [stderr]     |               ^^^^^^^^^ the lifetime is elided here
[INFO] [stderr] 778 | ) -> (ImplGenerics, TypeGenerics, TokenStream) {
[INFO] [stderr]     |       ^^^^^^^^^^^^  ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |       |
[INFO] [stderr]     |       the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 778 | ) -> (ImplGenerics<'_>, TypeGenerics<'_>, TokenStream) {
[INFO] [stderr]     |                   ++++              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `structopt-derive` (lib) generated 6 warnings (run `cargo fix --lib -p structopt-derive` to apply 3 suggestions)
[INFO] [stderr] warning: `structopt-derive` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/structopt_derive-02117e457b074422)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests structopt_derive
[INFO] [stderr] warning: unnecessary parentheses around match arm expression
[INFO] [stderr]    --> src/parse.rs:177:28
[INFO] [stderr]     |
[INFO] [stderr] 177 |                 "about" => (Ok(About(name, None))),
[INFO] [stderr]     |                            ^                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 177 -                 "about" => (Ok(About(name, None))),
[INFO] [stderr] 177 +                 "about" => Ok(About(name, None)) ,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around match arm expression
[INFO] [stderr]    --> src/parse.rs:178:29
[INFO] [stderr]     |
[INFO] [stderr] 178 |                 "author" => (Ok(Author(name, None))),
[INFO] [stderr]     |                             ^                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 178 -                 "author" => (Ok(Author(name, None))),
[INFO] [stderr] 178 +                 "author" => Ok(Author(name, None)) ,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5b2d89be9fbc43e76ef169dd5a6a11e2c098dc82a632ec72d4ff83757d3d9596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b2d89be9fbc43e76ef169dd5a6a11e2c098dc82a632ec72d4ff83757d3d9596", kill_on_drop: false }`
[INFO] [stdout] 5b2d89be9fbc43e76ef169dd5a6a11e2c098dc82a632ec72d4ff83757d3d9596
