[INFO] cloning repository https://github.com/cashmere53/ReverseBits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cashmere53/ReverseBits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcashmere53%2FReverseBits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcashmere53%2FReverseBits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa54e502228dff0ba659fd7dc8b5af0e9a4e9a0c
[INFO] checking cashmere53/ReverseBits against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcashmere53%2FReverseBits" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cashmere53/ReverseBits
[INFO] finished tweaking git repo https://github.com/cashmere53/ReverseBits
[INFO] tweaked toml for git repo https://github.com/cashmere53/ReverseBits written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cashmere53/ReverseBits 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 19 packages to latest Rust 1.93.0-nightly compatible versions
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4d13018b94e4dffc9a62843ce0b19c10596857d5a764bbbbde05dc2168629ed2
[INFO] running `Command { std: "docker" "start" "-a" "4d13018b94e4dffc9a62843ce0b19c10596857d5a764bbbbde05dc2168629ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d13018b94e4dffc9a62843ce0b19c10596857d5a764bbbbde05dc2168629ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d13018b94e4dffc9a62843ce0b19c10596857d5a764bbbbde05dc2168629ed2", kill_on_drop: false }`
[INFO] [stdout] 4d13018b94e4dffc9a62843ce0b19c10596857d5a764bbbbde05dc2168629ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f4a6b521ca1777be4c416eb775f706616b5844a1978658397f37185d4d2260e4
[INFO] running `Command { std: "docker" "start" "-a" "f4a6b521ca1777be4c416eb775f706616b5844a1978658397f37185d4d2260e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling indoc v2.0.7
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling pyo3-build-config v0.27.1
[INFO] [stderr]    Compiling pyo3-macros-backend v0.27.1
[INFO] [stderr]    Compiling pyo3-ffi v0.27.1
[INFO] [stderr]    Compiling pyo3 v0.27.1
[INFO] [stderr]    Compiling pyo3-macros v0.27.1
[INFO] [stderr]     Checking revbits v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]   --> src/lib.rs:39:31
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn inverse_byte(value: u8) -> u8 {
[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<u16, Infallible>
[INFO] [stdout]   --> src/lib.rs:52:32
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn inverse_word(value: u16) -> u16 {
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]   --> src/lib.rs:67:33
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn inverse_dword(value: u32) -> u32 {
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:84:33
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn inverse_qword(value: u64) -> u64 {
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<pyo3::Bound<'_, PyBytes>, Infallible>
[INFO] [stdout]    --> src/lib.rs:104:57
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn inverse_bytes<'py>(py: Python<'py>, value: &[u8]) -> Bound<'py, PyBytes> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `revbits` (lib test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]   --> src/lib.rs:39:31
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn inverse_byte(value: u8) -> u8 {
[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<u16, Infallible>
[INFO] [stdout]   --> src/lib.rs:52:32
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn inverse_word(value: u16) -> u16 {
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]   --> src/lib.rs:67:33
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn inverse_dword(value: u32) -> u32 {
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:84:33
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn inverse_qword(value: u64) -> u64 {
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<pyo3::Bound<'_, PyBytes>, Infallible>
[INFO] [stdout]    --> src/lib.rs:104:57
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn inverse_bytes<'py>(py: Python<'py>, value: &[u8]) -> Bound<'py, PyBytes> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `revbits` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "f4a6b521ca1777be4c416eb775f706616b5844a1978658397f37185d4d2260e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a6b521ca1777be4c416eb775f706616b5844a1978658397f37185d4d2260e4", kill_on_drop: false }`
[INFO] [stdout] f4a6b521ca1777be4c416eb775f706616b5844a1978658397f37185d4d2260e4