[INFO] fetching crate fastsend 1.2.3...
[INFO] checking fastsend-1.2.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate fastsend 1.2.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate fastsend 1.2.3
[INFO] finished tweaking crates.io crate fastsend 1.2.3
[INFO] tweaked toml for crates.io crate fastsend 1.2.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fastsend 1.2.3 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] 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 97 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding md5 v0.7.0 (available: v0.8.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_chacha v0.3.1 (available: v0.9.0)
[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] faae397aa937267dc805fc9aa315ebd70a27f43a67b43df70646daf9bf347f6b
[INFO] running `Command { std: "docker" "start" "-a" "faae397aa937267dc805fc9aa315ebd70a27f43a67b43df70646daf9bf347f6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "faae397aa937267dc805fc9aa315ebd70a27f43a67b43df70646daf9bf347f6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faae397aa937267dc805fc9aa315ebd70a27f43a67b43df70646daf9bf347f6b", kill_on_drop: false }`
[INFO] [stdout] faae397aa937267dc805fc9aa315ebd70a27f43a67b43df70646daf9bf347f6b
[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] b6ce91f4e308280a2dd94cdb01fc545acfcd4031e8dd46a813d98d7ece6b6643
[INFO] running `Command { std: "docker" "start" "-a" "b6ce91f4e308280a2dd94cdb01fc545acfcd4031e8dd46a813d98d7ece6b6643", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-locks v0.7.1
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking fastsend v1.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `to_string_radix` is never used
[INFO] [stdout]    --> src/serial/mod.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn to_string_radix(mut n: usize, radix: usize, size: usize, digit_first: bool) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_string_radix` is never used
[INFO] [stdout]    --> src/serial/mod.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn to_string_radix(mut n: usize, radix: usize, size: usize, digit_first: bool) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/serial/mod.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 |   ...   Box::pin(async move {
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 124 | | ...       loop {
[INFO] [stdout] 125 | | ...           // 时间不仅要用来构建序列号，还需要用来定位序列号生成的时间，用于定时清空全局 HashMap 的元素
[INFO] [stdout] 126 | | ...           let now = Local::now();
[INFO] [stdout] ...   |
[INFO] [stdout] 256 | | ...   })
[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<String, Infallible>
[INFO] [stdout]    --> src/serial/mod.rs:254:24
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 return Ok(serial);
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/serial/mod.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 |   ...   Box::pin(async move {
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 124 | | ...       loop {
[INFO] [stdout] 125 | | ...           // 时间不仅要用来构建序列号，还需要用来定位序列号生成的时间，用于定时清空全局 HashMap 的元素
[INFO] [stdout] 126 | | ...           let now = Local::now();
[INFO] [stdout] ...   |
[INFO] [stdout] 256 | | ...   })
[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<String, Infallible>
[INFO] [stdout]    --> src/serial/mod.rs:254:24
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 return Ok(serial);
[INFO] [stdout]     |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fastsend` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `fastsend` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b6ce91f4e308280a2dd94cdb01fc545acfcd4031e8dd46a813d98d7ece6b6643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ce91f4e308280a2dd94cdb01fc545acfcd4031e8dd46a813d98d7ece6b6643", kill_on_drop: false }`
[INFO] [stdout] b6ce91f4e308280a2dd94cdb01fc545acfcd4031e8dd46a813d98d7ece6b6643