[INFO] fetching crate structopt 0.3.26...
[INFO] checking structopt-0.3.26 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate structopt 0.3.26 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate structopt 0.3.26
[INFO] finished tweaking crates.io crate structopt 0.3.26
[INFO] tweaked toml for crates.io crate structopt 0.3.26 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate structopt 0.3.26 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate structopt 0.3.26 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7
[INFO] running `Command { std: "docker" "start" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.61
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling trybuild v1.0.41
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]     Checking dissimilar v1.0.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking structopt v0.3.26 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stdout] warning: field `foos` is never read
[INFO] [stdout]   --> examples/at_least_two.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 23 |     #[structopt(required = true, min_values = 2)]
[INFO] [stdout] 24 |     foos: Vec<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: fields `api_url` and `retries` are never read
[INFO] [stdout]   --> examples/env.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Opt {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     api_url: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     retries: u32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: fields `method`, `get`, `head`, `post`, `put`, and `delete` are never read
[INFO] [stdout]   --> examples/group.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Opt {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     method: Option<String>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     get: bool,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     head: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     post: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     put: bool,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     delete: bool,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: field `debug` is never read
[INFO] [stdout]   --> examples/gen_completions.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     debug: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: field `format` is never read
[INFO] [stdout]   --> examples/enum_in_args_with_strum.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     format: Format,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: fields `first_flag`, `second_flag`, `third_flag`, and `sub_command` are never read
[INFO] [stdout]    --> examples/doc_comments.rs:63:5
[INFO] [stdout]     |
[INFO] [stdout]  59 | struct Opt {
[INFO] [stdout]     |        --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout]  63 |     first_flag: bool,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     second_flag: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     third_flag: bool,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     sub_command: SubCommand,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Opt` 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] error: useless conversion to the same type: `Vec<u32>`
[INFO] [stdout]    --> tests/skip.rs:136:21
[INFO] [stdout]     |
[INFO] [stdout] 136 |         #[structopt(skip = vec![1, 2, 3])]
[INFO] [stdout]     |                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `structopt` (test "skip") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `foo` is never read
[INFO] [stdout]   --> tests/doc-comments-help.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     struct LoremIpsum {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 94 |         #[structopt(subcommand)]
[INFO] [stdout] 95 |         foo: SubCommand,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LoremIpsum` 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: field `bars` is never read
[INFO] [stdout]    --> tests/doc-comments-help.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         Foo {
[INFO] [stdout]     |         --- field in this variant
[INFO] [stdout] 104 |             #[structopt(help = "foo")]
[INFO] [stdout] 105 |             bars: Vec<String>,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SubCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `foo` is never read
[INFO] [stdout]    --> tests/doc-comments-help.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |     struct SeeFigure1 {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 139 |         #[structopt(long)]
[INFO] [stdout] 140 |         foo: bool,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SeeFigure1` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `foo` and `bar` are never read
[INFO] [stdout]    --> tests/doc-comments-help.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |     struct App {
[INFO] [stdout]     |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 170 |         foo: bool,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 173 |         bar: bool,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `App` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> examples/basic.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Opt {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 39 |     debug: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     verbose: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     speed: f64,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     output: PathBuf,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     nb_cars: Option<i32>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     level: Vec<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     files: Vec<PathBuf>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: field `subcommand` is never read
[INFO] [stdout]   --> tests/privacy.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub struct Options {
[INFO] [stdout]    |                ------- field in this struct
[INFO] [stdout] 16 |         #[structopt(subcommand)]
[INFO] [stdout] 17 |         pub subcommand: super::subcommands::SubCommand,
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Options` 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: field `bars` is never read
[INFO] [stdout]   --> tests/privacy.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Foo {
[INFO] [stdout]    |         --- field in this variant
[INFO] [stdout] 28 |             /// foo
[INFO] [stdout] 29 |             bars: Vec<String>,
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SubCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dragon` is never read
[INFO] [stdout]   --> examples/after_help.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 37 |     dragon: bool,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: fields `foo` and `bar` are never read
[INFO] [stdout]   --> tests/issues.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     struct Opt {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 15 |         #[structopt(long, group = "verb")]
[INFO] [stdout] 16 |         foo: bool,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 17 |         #[structopt(long, group = "verb")]
[INFO] [stdout] 18 |         bar: bool,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: field `a` is never read
[INFO] [stdout]   --> tests/issues.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     struct Cli {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 23 |         #[structopt(flatten)]
[INFO] [stdout] 24 |         a: Opt,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cli` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `command` is never read
[INFO] [stdout]    --> tests/issues.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     struct Opts {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 127 |         command: Command,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Opts` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `num_splines` is never read
[INFO] [stdout]    --> tests/issues.rs:136:13
[INFO] [stdout]     |
[INFO] [stdout] 134 |         Reticulate {
[INFO] [stdout]     |         ---------- field in this variant
[INFO] [stdout] 135 |             /// How many splines
[INFO] [stdout] 136 |             num_splines: u8,
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `opt_vec` and `opt_opt_vec` are never read
[INFO] [stdout]    --> tests/issues.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |     struct Opt {
[INFO] [stdout]     |            --- fields in this struct
[INFO] [stdout] 168 |         opt_vec: Vec<u16>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 169 |         #[structopt(long)]
[INFO] [stdout] 170 |         opt_opt_vec: Option<Vec<u16>>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7", kill_on_drop: false }`
[INFO] [stdout] 38bcc6719ed591428bb79756e74534519f835263c17b486fa7bebb14874666b7
