[INFO] fetching crate r2u2_cli 4.1.0...
[INFO] checking r2u2_cli-4.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate r2u2_cli 4.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate r2u2_cli 4.1.0
[INFO] finished tweaking crates.io crate r2u2_cli 4.1.0
[INFO] tweaked toml for crates.io crate r2u2_cli 4.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate r2u2_cli 4.1.0 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 r2u2_cli 4.1.0 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-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] 83635f39518c5fadefa8f2cf680fb54e26ab6ffe6fa519092db75199af9461cd
[INFO] running `Command { std: "docker" "start" "-a" "83635f39518c5fadefa8f2cf680fb54e26ab6ffe6fa519092db75199af9461cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83635f39518c5fadefa8f2cf680fb54e26ab6ffe6fa519092db75199af9461cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83635f39518c5fadefa8f2cf680fb54e26ab6ffe6fa519092db75199af9461cd", kill_on_drop: false }`
[INFO] [stdout] 83635f39518c5fadefa8f2cf680fb54e26ab6ffe6fa519092db75199af9461cd
[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] a7a58938d7bfddc583322ecbbb792746190709351475a48c5bac436545b7c626
[INFO] running `Command { std: "docker" "start" "-a" "a7a58938d7bfddc583322ecbbb792746190709351475a48c5bac436545b7c626", kill_on_drop: false }`
[INFO] [stderr]    Compiling verus_prettyplease v0.0.0-2025-08-12-1837
[INFO] [stderr]    Compiling vstd v0.0.0-2025-08-12-1837
[INFO] [stderr]     Checking verus_builtin v0.0.0-2025-08-12-1837
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling pyo3-build-config v0.27.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling verus_syn v0.0.0-2025-08-12-1837
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking clap_builder v4.5.46
[INFO] [stderr]    Compiling const_env_impl v0.1.2
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking fixedstr v0.5.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling const_env v0.1.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking srfng v1.0.1
[INFO] [stderr]    Compiling pyo3-macros-backend v0.27.0
[INFO] [stderr]    Compiling pyo3-ffi v0.27.0
[INFO] [stderr]    Compiling pyo3 v0.27.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling clap_derive v4.5.45
[INFO] [stderr]     Checking clap v4.5.46
[INFO] [stderr]    Compiling verus_state_machines_macros v0.0.0-2025-08-12-1837
[INFO] [stderr]    Compiling verus_builtin_macros v0.0.0-2025-08-12-1837
[INFO] [stderr]    Compiling pyo3-macros v0.27.0
[INFO] [stderr]     Checking r2u2_core v4.1.0
[INFO] [stderr]     Checking r2u2_cli v4.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:92:26
[INFO] [stdout]    |
[INFO] [stdout] 92 |       let file : PathBuf = s
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 93 | |         .parse()
[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<PathBuf, Infallible>
[INFO] [stdout]    --> src/main.rs:112:26
[INFO] [stdout]     |
[INFO] [stdout] 112 |       let file : PathBuf = s
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 113 | |         .parse()
[INFO] [stdout]     | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/main.rs:131:26
[INFO] [stdout]     |
[INFO] [stdout] 131 |       let file : PathBuf = s
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 132 | |         .parse()
[INFO] [stdout]     | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/main.rs:149:26
[INFO] [stdout]     |
[INFO] [stdout] 149 |       let file : PathBuf = s
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 150 | |         .parse()
[INFO] [stdout]     | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/main.rs:168:26
[INFO] [stdout]     |
[INFO] [stdout] 168 |       let path : PathBuf = s
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 169 | |         .parse()
[INFO] [stdout]     | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `r2u2_cli` (bin "r2u2_cli") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "a7a58938d7bfddc583322ecbbb792746190709351475a48c5bac436545b7c626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a58938d7bfddc583322ecbbb792746190709351475a48c5bac436545b7c626", kill_on_drop: false }`
[INFO] [stdout] a7a58938d7bfddc583322ecbbb792746190709351475a48c5bac436545b7c626