[INFO] fetching crate typespec 0.10.1...
[INFO] checking typespec-0.10.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate typespec 0.10.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate typespec 0.10.1
[INFO] finished tweaking crates.io crate typespec 0.10.1
[INFO] tweaked toml for crates.io crate typespec 0.10.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate typespec 0.10.1 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 typespec 0.10.1 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 36920b6fd19bfa4cbd5f44279ec7c3273925719f371a91b5bd6fee236282e489
[INFO] running `Command { std: "docker" "start" "-a" "36920b6fd19bfa4cbd5f44279ec7c3273925719f371a91b5bd6fee236282e489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36920b6fd19bfa4cbd5f44279ec7c3273925719f371a91b5bd6fee236282e489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36920b6fd19bfa4cbd5f44279ec7c3273925719f371a91b5bd6fee236282e489", kill_on_drop: false }`
[INFO] [stdout] 36920b6fd19bfa4cbd5f44279ec7c3273925719f371a91b5bd6fee236282e489
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1d2bcc3c7e99323f1097d80cf7c88e7809d67dee2f4f8b8cbd780028765b80a0
[INFO] running `Command { std: "docker" "start" "-a" "1d2bcc3c7e99323f1097d80cf7c88e7809d67dee2f4f8b8cbd780028765b80a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking zerovec v0.11.4
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]     Checking tinystr v0.8.1
[INFO] [stderr]     Checking potential_utf v0.1.2
[INFO] [stderr]     Checking icu_collections v2.0.0
[INFO] [stderr]     Checking icu_locale_core v2.0.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking icu_properties v2.0.1
[INFO] [stderr]     Checking icu_normalizer v2.0.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking typespec v0.10.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::vec::IntoIter<(HeaderName, HeaderValue)>, Infallible>
[INFO] [stdout]   --> src/http/headers.rs:69:61
[INFO] [stdout]    |
[INFO] [stdout] 69 |       fn as_headers(&self) -> Result<Self::Iter, Self::Error> {
[INFO] [stdout]    |  _____________________________________________________________^
[INFO] [stdout] 70 | |         Ok(vec![(self.name(), self.value())].into_iter())
[INFO] [stdout] 71 | |     }
[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<std::vec::IntoIter<(HeaderName, HeaderValue)>, Infallible>
[INFO] [stdout]   --> src/http/headers.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         Ok(vec![(self.name(), self.value())].into_iter())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `typespec` (lib) 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: std::result::Result<std::vec::IntoIter<(HeaderName, HeaderValue)>, Infallible>
[INFO] [stdout]   --> src/http/headers.rs:69:61
[INFO] [stdout]    |
[INFO] [stdout] 69 |       fn as_headers(&self) -> Result<Self::Iter, Self::Error> {
[INFO] [stdout]    |  _____________________________________________________________^
[INFO] [stdout] 70 | |         Ok(vec![(self.name(), self.value())].into_iter())
[INFO] [stdout] 71 | |     }
[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<std::vec::IntoIter<(HeaderName, HeaderValue)>, Infallible>
[INFO] [stdout]   --> src/http/headers.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         Ok(vec![(self.name(), self.value())].into_iter())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<HasTwoHeaders>, Infallible>
[INFO] [stdout]    --> src/http/headers.rs:540:79
[INFO] [stdout]     |
[INFO] [stdout] 540 |               fn from_headers(_: &Headers) -> Result<Option<Self>, Self::Error> {
[INFO] [stdout]     |  _______________________________________________________________________________^
[INFO] [stdout] 541 | |                 Ok(None)
[INFO] [stdout] 542 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::option::Option<HasTwoHeaders>, Infallible>
[INFO] [stdout]    --> src/http/headers.rs:541:17
[INFO] [stdout]     |
[INFO] [stdout] 541 |                 Ok(None)
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `typespec` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "1d2bcc3c7e99323f1097d80cf7c88e7809d67dee2f4f8b8cbd780028765b80a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2bcc3c7e99323f1097d80cf7c88e7809d67dee2f4f8b8cbd780028765b80a0", kill_on_drop: false }`
[INFO] [stdout] 1d2bcc3c7e99323f1097d80cf7c88e7809d67dee2f4f8b8cbd780028765b80a0
