[INFO] fetching crate structopt 0.3.26... [INFO] checking structopt-0.3.26 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [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 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5345f2e81d5cce876991c5f60b79149653a6ca806ddbacf13c7e1b3db874fe5c [INFO] running `Command { std: "docker" "start" "-a" "5345f2e81d5cce876991c5f60b79149653a6ca806ddbacf13c7e1b3db874fe5c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5345f2e81d5cce876991c5f60b79149653a6ca806ddbacf13c7e1b3db874fe5c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5345f2e81d5cce876991c5f60b79149653a6ca806ddbacf13c7e1b3db874fe5c", kill_on_drop: false }` [INFO] [stdout] 5345f2e81d5cce876991c5f60b79149653a6ca806ddbacf13c7e1b3db874fe5c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9126f73efa049bba51fcabd7d3481848060ce78a70af47f30f4fea272111ef24 [INFO] running `Command { std: "docker" "start" "-a" "9126f73efa049bba51fcabd7d3481848060ce78a70af47f30f4fea272111ef24", kill_on_drop: false }` [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 libc v0.2.87 [INFO] [stderr] Compiling serde v1.0.123 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling rustversion v1.0.4 [INFO] [stderr] Compiling trybuild v1.0.41 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Checking dissimilar v1.0.2 [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] 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 structopt v0.3.26 (/opt/rustwide/workdir) [INFO] [stderr] Checking strum v0.21.0 [INFO] [stderr] Checking toml v0.5.8 [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: 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] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/env.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | / /// URL for the API server [INFO] [stdout] 30 | | #[structopt(long, env = "API_URL")] [INFO] [stdout] 31 | | api_url: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [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] [stderr] error: could not compile `structopt` (example "env") due to 1 previous error; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/deny-warnings.rs:13:65 [INFO] [stdout] | [INFO] [stdout] 13 | fn try_str(s: &str) -> Result { [INFO] [stdout] | _________________________________________________________________^ [INFO] [stdout] 14 | | Ok(s.into()) [INFO] [stdout] 15 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/deny-warnings.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | Ok(s.into()) [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/deny-warnings.rs:21:42 [INFO] [stdout] | [INFO] [stdout] 21 | #[structopt(parse(try_from_str = try_str))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/deny-warnings.rs:37:46 [INFO] [stdout] | [INFO] [stdout] 37 | #[structopt(parse(try_from_str = try_str))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `i` is never read [INFO] [stdout] --> examples/enum_in_args.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 31 | struct Opt { [INFO] [stdout] | --- field in this struct [INFO] [stdout] ... [INFO] [stdout] 34 | i: Baz, [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] [stderr] error: could not compile `structopt` (test "deny-warnings") due to 4 previous errors [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/nested-subcommands.rs:115:9 [INFO] [stdout] | [INFO] [stdout] 115 | file: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/nested-subcommands.rs:157:11 [INFO] [stdout] | [INFO] [stdout] 157 | Add { name: String, url: String }, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/nested-subcommands.rs:157:25 [INFO] [stdout] | [INFO] [stdout] 157 | Add { name: String, url: String }, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/nested-subcommands.rs:158:14 [INFO] [stdout] | [INFO] [stdout] 158 | Remove { name: String }, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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, [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: 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, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 169 | #[structopt(long)] [INFO] [stdout] 170 | opt_opt_vec: Option>, [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] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/doc-comments-help.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | / #[structopt(help = "foo")] [INFO] [stdout] 105 | | bars: Vec, [INFO] [stdout] | |_____________________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `structopt` (test "nested-subcommands") due to 4 previous errors [INFO] [stderr] error: could not compile `structopt` (test "doc-comments-help") due to 1 previous error; 4 warnings emitted [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/options.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | / #[structopt(short, default_value = "")] [INFO] [stdout] 122 | | arg: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/options.rs:187:9 [INFO] [stdout] | [INFO] [stdout] 187 | / #[structopt(long)] [INFO] [stdout] 188 | | field: Option>, [INFO] [stdout] | |_____________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `structopt` (test "options") due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "9126f73efa049bba51fcabd7d3481848060ce78a70af47f30f4fea272111ef24", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9126f73efa049bba51fcabd7d3481848060ce78a70af47f30f4fea272111ef24", kill_on_drop: false }` [INFO] [stdout] 9126f73efa049bba51fcabd7d3481848060ce78a70af47f30f4fea272111ef24