[INFO] cloning repository https://github.com/lefth/md5sum-uring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lefth/md5sum-uring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flefth%2Fmd5sum-uring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flefth%2Fmd5sum-uring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c1522e680648aceff3a2cfef6d392dbecbda449
[INFO] checking lefth/md5sum-uring 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%2Flefth%2Fmd5sum-uring" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lefth/md5sum-uring
[INFO] finished tweaking git repo https://github.com/lefth/md5sum-uring
[INFO] tweaked toml for git repo https://github.com/lefth/md5sum-uring written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lefth/md5sum-uring 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 git repo https://github.com/lefth/md5sum-uring 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-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] faeee2a267f8ed842912e19ed54163c3c94f3641364955e568b9618027afffa3
[INFO] running `Command { std: "docker" "start" "-a" "faeee2a267f8ed842912e19ed54163c3c94f3641364955e568b9618027afffa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "faeee2a267f8ed842912e19ed54163c3c94f3641364955e568b9618027afffa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faeee2a267f8ed842912e19ed54163c3c94f3641364955e568b9618027afffa3", kill_on_drop: false }`
[INFO] [stdout] faeee2a267f8ed842912e19ed54163c3c94f3641364955e568b9618027afffa3
[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] 49cac517f9f8b3f107a581fbe746f5b97e41504624f4fdf3d8a482101d4e3308
[INFO] running `Command { std: "docker" "start" "-a" "49cac517f9f8b3f107a581fbe746f5b97e41504624f4fdf3d8a482101d4e3308", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling io-uring v0.5.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking block-buffer v0.10.0
[INFO] [stderr]     Checking crypto-common v0.1.1
[INFO] [stderr]     Checking memmap2 v0.5.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking digest v0.10.1
[INFO] [stderr]     Checking md-5 v0.10.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking md5sum-uring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/simple_uring.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut buffer = shared_buffers
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/with_register_files.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let mut buffer = shared_buffers
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     #[structopt()]
[INFO] [stdout] 25 | |     /// The files to be checksummed.
[INFO] [stdout] 26 | |     pub files: Vec<PathBuf>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/simple_uring.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let mut buffer = shared_buffers
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `md5sum-uring` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/with_register_files.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let mut buffer = shared_buffers
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     #[structopt()]
[INFO] [stdout] 25 | |     /// The files to be checksummed.
[INFO] [stdout] 26 | |     pub files: Vec<PathBuf>,
[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: ControlFlow<Result<Infallible, Infallible>, [u8; 16]>
[INFO] [stdout]    --> src/lib.rs:194:38
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let checksum: [u8; 16] = hasher.finalize_reset().try_into()?;
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 16], Infallible>
[INFO] [stdout]    --> src/lib.rs:194:38
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let checksum: [u8; 16] = hasher.finalize_reset().try_into()?;
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, [u8; 16]>
[INFO] [stdout]    --> src/lib.rs:231:42
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 let checksum: [u8; 16] = result?.finalize().try_into()?;
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 16], Infallible>
[INFO] [stdout]    --> src/lib.rs:231:42
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 let checksum: [u8; 16] = result?.finalize().try_into()?;
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `md5sum-uring` (lib test) due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "49cac517f9f8b3f107a581fbe746f5b97e41504624f4fdf3d8a482101d4e3308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49cac517f9f8b3f107a581fbe746f5b97e41504624f4fdf3d8a482101d4e3308", kill_on_drop: false }`
[INFO] [stdout] 49cac517f9f8b3f107a581fbe746f5b97e41504624f4fdf3d8a482101d4e3308
