[INFO] fetching crate json-streaming 1.0.3...
[INFO] checking json-streaming-1.0.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate json-streaming 1.0.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate json-streaming 1.0.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate json-streaming 1.0.3
[INFO] tweaked toml for crates.io crate json-streaming 1.0.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json-streaming 1.0.3 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 json-streaming 1.0.3 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a02e7ba2dd0f45d144fc060d21aa1550ca3ab79e10ef91844b6efa8298b692cc
[INFO] running `Command { std: "docker" "start" "-a" "a02e7ba2dd0f45d144fc060d21aa1550ca3ab79e10ef91844b6efa8298b692cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a02e7ba2dd0f45d144fc060d21aa1550ca3ab79e10ef91844b6efa8298b692cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a02e7ba2dd0f45d144fc060d21aa1550ca3ab79e10ef91844b6efa8298b692cc", kill_on_drop: false }`
[INFO] [stdout] a02e7ba2dd0f45d144fc060d21aa1550ca3ab79e10ef91844b6efa8298b692cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 77217e0bc510f885b23d20f34dd4d0087ed8cde23953588b5d3f955d69a64dda
[INFO] running `Command { std: "docker" "start" "-a" "77217e0bc510f885b23d20f34dd4d0087ed8cde23953588b5d3f955d69a64dda", kill_on_drop: false }`
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling rstest_macros v0.26.1
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling regex v1.11.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking json-streaming v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rstest v0.26.1
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, NoError>
[INFO] [stdout]   --> examples/no_std.rs:62:59
[INFO] [stdout]    |
[INFO] [stdout] 62 |       fn read(&mut self) -> Result<Option<u8>, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 63 | |         let result = if self.index < self.data.len() {
[INFO] [stdout] 64 | |             Some(self.data[self.index])
[INFO] [stdout] ...  |
[INFO] [stdout] 70 | |         Ok(result)
[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: Result<Option<u8>, NoError>
[INFO] [stdout]   --> examples/no_std.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         Ok(result)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, NoError>, json_streaming::blocking::JsonObject<'_, '_, FixedWriteBuffer, PrettyFormatter, DefaultFloatFormat>>
[INFO] [stdout]   --> examples/no_std.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut obj = JsonObject::new(&mut json_writer)?;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<json_streaming::blocking::JsonObject<'_, '_, FixedWriteBuffer, PrettyFormatter, DefaultFloatFormat>, NoError>
[INFO] [stdout]   --> examples/no_std.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut obj = JsonObject::new(&mut json_writer)?;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json-streaming` (example "no_std") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "77217e0bc510f885b23d20f34dd4d0087ed8cde23953588b5d3f955d69a64dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77217e0bc510f885b23d20f34dd4d0087ed8cde23953588b5d3f955d69a64dda", kill_on_drop: false }`
[INFO] [stdout] 77217e0bc510f885b23d20f34dd4d0087ed8cde23953588b5d3f955d69a64dda
