[INFO] fetching crate pessimize 3.0.0...
[INFO] checking pessimize-3.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate pessimize 3.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate pessimize 3.0.0
[INFO] finished tweaking crates.io crate pessimize 3.0.0
[INFO] tweaked toml for crates.io crate pessimize 3.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pessimize 3.0.0 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 pessimize 3.0.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ed1634e74e35c28e2ba58cb43e5b8fe12f59dac681f1eac063eeac1c225e4c6f
[INFO] running `Command { std: "docker" "start" "-a" "ed1634e74e35c28e2ba58cb43e5b8fe12f59dac681f1eac063eeac1c225e4c6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed1634e74e35c28e2ba58cb43e5b8fe12f59dac681f1eac063eeac1c225e4c6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed1634e74e35c28e2ba58cb43e5b8fe12f59dac681f1eac063eeac1c225e4c6f", kill_on_drop: false }`
[INFO] [stdout] ed1634e74e35c28e2ba58cb43e5b8fe12f59dac681f1eac063eeac1c225e4c6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d04b656d85aa612b27b08ea3c4b32e3605d0ea75d1c6a9f822afc641fbf01b01
[INFO] running `Command { std: "docker" "start" "-a" "d04b656d85aa612b27b08ea3c4b32e3605d0ea75d1c6a9f822afc641fbf01b01", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking linux-raw-sys v0.11.0
[INFO] [stderr]     Checking bitflags v2.9.4
[INFO] [stderr]     Checking fastrand v2.3.0
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking safe_arch v0.9.2
[INFO] [stderr]     Checking pessimize v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stdout] error: this type will no longer be must used: Result<std::ffi::OsString, Infallible>
[INFO] [stdout]   --> src/ffi.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             OsString::from_str("a").unwrap(),
[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<std::ffi::OsString, Infallible>
[INFO] [stdout]   --> src/ffi.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             OsString::from_str("Z").unwrap(),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]   --> src/path.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             PathBuf::from_str("a").unwrap(),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]   --> src/path.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             PathBuf::from_str("Z").unwrap(),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pessimize` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "d04b656d85aa612b27b08ea3c4b32e3605d0ea75d1c6a9f822afc641fbf01b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d04b656d85aa612b27b08ea3c4b32e3605d0ea75d1c6a9f822afc641fbf01b01", kill_on_drop: false }`
[INFO] [stdout] d04b656d85aa612b27b08ea3c4b32e3605d0ea75d1c6a9f822afc641fbf01b01
