[INFO] fetching crate preexplorer 0.5.2...
[INFO] checking preexplorer-0.5.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate preexplorer 0.5.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate preexplorer 0.5.2
[INFO] finished tweaking crates.io crate preexplorer 0.5.2
[INFO] tweaked toml for crates.io crate preexplorer 0.5.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate preexplorer 0.5.2 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 preexplorer 0.5.2 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] 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] f4272fd459e90d10b09572f046744aa5ed3698ed310ab7e3b44f97fd18ae0920
[INFO] running `Command { std: "docker" "start" "-a" "f4272fd459e90d10b09572f046744aa5ed3698ed310ab7e3b44f97fd18ae0920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4272fd459e90d10b09572f046744aa5ed3698ed310ab7e3b44f97fd18ae0920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4272fd459e90d10b09572f046744aa5ed3698ed310ab7e3b44f97fd18ae0920", kill_on_drop: false }`
[INFO] [stdout] f4272fd459e90d10b09572f046744aa5ed3698ed310ab7e3b44f97fd18ae0920
[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] a6abf20c2de76b67e40a6abcff1c6d7aceefc168e8383556d83a3d9a14c0e690
[INFO] running `Command { std: "docker" "start" "-a" "a6abf20c2de76b67e40a6abcff1c6d7aceefc168e8383556d83a3d9a14c0e690", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking average v0.10.6
[INFO] [stderr]     Checking chrono v0.4.35
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling getset v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking preexplorer v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ron v0.6.6
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, &mut configuration::Configuration>
[INFO] [stdout]    --> src/configuration.rs:456:9
[INFO] [stdout]     |
[INFO] [stdout] 456 |         config.set_style(9)?;
[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<&mut configuration::Configuration, Infallible>
[INFO] [stdout]    --> src/configuration.rs:456:9
[INFO] [stdout]     |
[INFO] [stdout] 456 |         config.set_style(9)?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `preexplorer` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a6abf20c2de76b67e40a6abcff1c6d7aceefc168e8383556d83a3d9a14c0e690", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6abf20c2de76b67e40a6abcff1c6d7aceefc168e8383556d83a3d9a14c0e690", kill_on_drop: false }`
[INFO] [stdout] a6abf20c2de76b67e40a6abcff1c6d7aceefc168e8383556d83a3d9a14c0e690