[INFO] fetching crate io-arg 0.2.2...
[INFO] checking io-arg-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate io-arg 0.2.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate io-arg 0.2.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate io-arg 0.2.2
[INFO] tweaked toml for crates.io crate io-arg 0.2.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate io-arg 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] crate crates.io crate io-arg 0.2.2 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] [stderr]     Blocking waiting for file lock on package cache
[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] b8c7e514fd5a0ea7f8d9c6652713557608c6ece76e576443dc372a6e8572b231
[INFO] running `Command { std: "docker" "start" "-a" "b8c7e514fd5a0ea7f8d9c6652713557608c6ece76e576443dc372a6e8572b231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8c7e514fd5a0ea7f8d9c6652713557608c6ece76e576443dc372a6e8572b231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8c7e514fd5a0ea7f8d9c6652713557608c6ece76e576443dc372a6e8572b231", kill_on_drop: false }`
[INFO] [stdout] b8c7e514fd5a0ea7f8d9c6652713557608c6ece76e576443dc372a6e8572b231
[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] c75a9519de5f13e8994d6469c918c5533fca9cb2f5c5431e7a89789572c92ef7
[INFO] running `Command { std: "docker" "start" "-a" "c75a9519de5f13e8994d6469c918c5533fca9cb2f5c5431e7a89789572c92ef7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]     Checking anstyle-query v1.1.3
[INFO] [stderr]     Checking colorchoice v1.0.4
[INFO] [stderr]    Compiling portable-atomic v1.11.1
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]     Checking clap_lex v0.7.5
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking unit-prefix v0.5.1
[INFO] [stderr]     Checking io-arg v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking anstyle-parse v0.2.7
[INFO] [stdout] error: this type will no longer be must used: Result<IoArg, Infallible>
[INFO] [stdout]   --> src/io_arg.rs:60:53
[INFO] [stdout]    |
[INFO] [stdout] 60 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 61 | |         let out = match s {
[INFO] [stdout] 62 | |             "-" => IoArg::StdStream,
[INFO] [stdout] 63 | |             other => IoArg::File(other.into()),
[INFO] [stdout] 64 | |         };
[INFO] [stdout] 65 | |         Ok(out)
[INFO] [stdout] 66 | |     }
[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<IoArg, Infallible>
[INFO] [stdout]   --> src/io_arg.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         Ok(out)
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `io-arg` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c75a9519de5f13e8994d6469c918c5533fca9cb2f5c5431e7a89789572c92ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c75a9519de5f13e8994d6469c918c5533fca9cb2f5c5431e7a89789572c92ef7", kill_on_drop: false }`
[INFO] [stdout] c75a9519de5f13e8994d6469c918c5533fca9cb2f5c5431e7a89789572c92ef7
