[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, NoError> [INFO] [stdout] --> examples/no_std.rs:62:59 [INFO] [stdout] | [INFO] [stdout] 62 | fn read(&mut self) -> Result, 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, 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, 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, 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