[INFO] fetching crate gumdrop 0.8.1... [INFO] checking gumdrop-0.8.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate gumdrop 0.8.1 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate gumdrop 0.8.1 [INFO] finished tweaking crates.io crate gumdrop 0.8.1 [INFO] tweaked toml for crates.io crate gumdrop 0.8.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate gumdrop 0.8.1 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 gumdrop 0.8.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 320ee75c8bf743cc6097aeca42a7b126bb1f0475cecc7f4359f82a44737a881c [INFO] running `Command { std: "docker" "start" "-a" "320ee75c8bf743cc6097aeca42a7b126bb1f0475cecc7f4359f82a44737a881c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "320ee75c8bf743cc6097aeca42a7b126bb1f0475cecc7f4359f82a44737a881c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "320ee75c8bf743cc6097aeca42a7b126bb1f0475cecc7f4359f82a44737a881c", kill_on_drop: false }` [INFO] [stdout] 320ee75c8bf743cc6097aeca42a7b126bb1f0475cecc7f4359f82a44737a881c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c9d6f44e7223fd0fbb781ef7dd4edfd4b04558ef5001fedc0da20bed2925bf8d [INFO] running `Command { std: "docker" "start" "-a" "c9d6f44e7223fd0fbb781ef7dd4edfd4b04558ef5001fedc0da20bed2925bf8d", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Checking assert_matches v1.3.0 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Compiling gumdrop_derive v0.8.1 [INFO] [stderr] Checking gumdrop v0.8.1 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/commands.rs:38:17 [INFO] [stdout] | [INFO] [stdout] 38 | #[derive(Debug, Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/commands.rs:49:17 [INFO] [stdout] | [INFO] [stdout] 49 | #[derive(Debug, Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `gumdrop` (example "commands") due to 2 previous errors [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] --> examples/options.rs:10:17 [INFO] [stdout] | [INFO] [stdout] 10 | #[derive(Debug, Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `gumdrop` (example "options") due to 1 previous error [INFO] [stdout] warning: struct `Opts` is never constructed [INFO] [stdout] --> tests/options.rs:42:12 [INFO] [stdout] | [INFO] [stdout] 42 | struct Opts { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Cmd` is never used [INFO] [stdout] --> tests/options.rs:56:10 [INFO] [stdout] | [INFO] [stdout] 56 | enum Cmd { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FooOpts` is never constructed [INFO] [stdout] --> tests/options.rs:62:12 [INFO] [stdout] | [INFO] [stdout] 62 | struct FooOpts { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `BarOpts` is never constructed [INFO] [stdout] --> tests/options.rs:69:12 [INFO] [stdout] | [INFO] [stdout] 69 | struct BarOpts { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:41:14 [INFO] [stdout] | [INFO] [stdout] 41 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:61:14 [INFO] [stdout] | [INFO] [stdout] 61 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:68:14 [INFO] [stdout] | [INFO] [stdout] 68 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:100:21 [INFO] [stdout] | [INFO] [stdout] 100 | #[derive(Debug, Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:105:21 [INFO] [stdout] | [INFO] [stdout] 105 | #[derive(Debug, Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:314:14 [INFO] [stdout] | [INFO] [stdout] 314 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:355:14 [INFO] [stdout] | [INFO] [stdout] 355 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:398:14 [INFO] [stdout] | [INFO] [stdout] 398 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:488:14 [INFO] [stdout] | [INFO] [stdout] 488 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:523:14 [INFO] [stdout] | [INFO] [stdout] 523 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:562:14 [INFO] [stdout] | [INFO] [stdout] 562 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:591:14 [INFO] [stdout] | [INFO] [stdout] 591 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:936:14 [INFO] [stdout] | [INFO] [stdout] 936 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:943:14 [INFO] [stdout] | [INFO] [stdout] 943 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: std::result::Result [INFO] [stdout] --> tests/options.rs:1082:14 [INFO] [stdout] | [INFO] [stdout] 1082 | #[derive(Options)] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Options` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `gumdrop` (test "options") due to 15 previous errors; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "c9d6f44e7223fd0fbb781ef7dd4edfd4b04558ef5001fedc0da20bed2925bf8d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9d6f44e7223fd0fbb781ef7dd4edfd4b04558ef5001fedc0da20bed2925bf8d", kill_on_drop: false }` [INFO] [stdout] c9d6f44e7223fd0fbb781ef7dd4edfd4b04558ef5001fedc0da20bed2925bf8d