[INFO] fetching crate flaggy 0.2.2...
[INFO] checking flaggy-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate flaggy 0.2.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate flaggy 0.2.2
[INFO] finished tweaking crates.io crate flaggy 0.2.2
[INFO] tweaked toml for crates.io crate flaggy 0.2.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flaggy 0.2.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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 thiserror v1.0.69 (available: v2.0.17)
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d50a3f7f0d6eb37f13e6406832b7f800f18b6da3724ba24dd00c42991960ecf1
[INFO] running `Command { std: "docker" "start" "-a" "d50a3f7f0d6eb37f13e6406832b7f800f18b6da3724ba24dd00c42991960ecf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d50a3f7f0d6eb37f13e6406832b7f800f18b6da3724ba24dd00c42991960ecf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d50a3f7f0d6eb37f13e6406832b7f800f18b6da3724ba24dd00c42991960ecf1", kill_on_drop: false }`
[INFO] [stdout] d50a3f7f0d6eb37f13e6406832b7f800f18b6da3724ba24dd00c42991960ecf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] dcd7aa6b505e69aa58651c787cbadd221bd2434d7499089effa1986399985f3e
[INFO] running `Command { std: "docker" "start" "-a" "dcd7aa6b505e69aa58651c787cbadd221bd2434d7499089effa1986399985f3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling flaggy-codegen v0.1.2
[INFO] [stderr]     Checking flaggy-values v0.2.1
[INFO] [stderr]     Checking flaggy v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, Vec<PathBuf>>
[INFO] [stdout]   --> src/tests/codegen.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     #[command_callback]
[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: std::result::Result<Vec<PathBuf>, Infallible>
[INFO] [stdout]   --> src/tests/codegen.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     #[command_callback]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `command_callback` (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: ControlFlow<std::result::Result<Infallible, Infallible>, Vec<String>>
[INFO] [stdout]   --> src/tests/codegen.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     #[command_callback]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<String>, Infallible>
[INFO] [stdout]   --> src/tests/codegen.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     #[command_callback]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `command_callback` (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: ControlFlow<std::result::Result<Infallible, Infallible>, Vec<String>>
[INFO] [stdout]   --> src/tests/codegen.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     #[command_callback]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, Vec<PathBuf>>
[INFO] [stdout]   --> src/tests/codegen.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     #[command_callback]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tests/parse_and_execute.rs:50:37
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn build_trivial_test_command(name: &str) -> Command<()> {
[INFO] [stdout]    |                                     ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     the lifetime is elided 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] 50 | fn build_trivial_test_command(name: &str) -> Command<'_, ()> {
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tests/parse_and_execute.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn build_test_command(name: &str, specs: Specs, expected_vs: Values) -> Command<()> {
[INFO] [stdout]    |                             ^^^^ the lifetime is elided here            ^^^^^^^^^^^ 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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn build_test_command(name: &str, specs: Specs, expected_vs: Values) -> Command<'_, ()> {
[INFO] [stdout]    |                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flaggy` (lib test) due to 6 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "dcd7aa6b505e69aa58651c787cbadd221bd2434d7499089effa1986399985f3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcd7aa6b505e69aa58651c787cbadd221bd2434d7499089effa1986399985f3e", kill_on_drop: false }`
[INFO] [stdout] dcd7aa6b505e69aa58651c787cbadd221bd2434d7499089effa1986399985f3e