[INFO] cloning repository https://github.com/sunkit02/fp-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunkit02/fp-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunkit02%2Ffp-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunkit02%2Ffp-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d41dd31bada3a37dd1593f15d3d361e8f49724b
[INFO] checking sunkit02/fp-rs 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%2Fsunkit02%2Ffp-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sunkit02/fp-rs
[INFO] finished tweaking git repo https://github.com/sunkit02/fp-rs
[INFO] tweaked toml for git repo https://github.com/sunkit02/fp-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sunkit02/fp-rs 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/sunkit02/fp-rs 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0ad47735f602d2d6de0ca0f609b3f5b3d1057fc764ba57e07d6f7c8edfea88e5
[INFO] running `Command { std: "docker" "start" "-a" "0ad47735f602d2d6de0ca0f609b3f5b3d1057fc764ba57e07d6f7c8edfea88e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ad47735f602d2d6de0ca0f609b3f5b3d1057fc764ba57e07d6f7c8edfea88e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad47735f602d2d6de0ca0f609b3f5b3d1057fc764ba57e07d6f7c8edfea88e5", kill_on_drop: false }`
[INFO] [stdout] 0ad47735f602d2d6de0ca0f609b3f5b3d1057fc764ba57e07d6f7c8edfea88e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9d38643e61958db57839f7180579f872225a4bffd4f0a1420feac430d11429e4
[INFO] running `Command { std: "docker" "start" "-a" "9d38643e61958db57839f7180579f872225a4bffd4f0a1420feac430d11429e4", kill_on_drop: false }`
[INFO] [stderr]     Checking anyhow v1.0.79
[INFO] [stderr]     Checking fp-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, PathBuf>
[INFO] [stdout]   --> src/main.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut config_file_path = PathBuf::from_str(env::var("XDG_CONFIG_HOME")?.as_str())?;
[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:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut config_file_path = PathBuf::from_str(env::var("XDG_CONFIG_HOME")?.as_str())?;
[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:139:24
[INFO] [stdout]     |
[INFO] [stdout] 139 |             let path = PathBuf::from_str(path).ok()?;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fp-rs` (bin "fp-rs" test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, PathBuf>
[INFO] [stdout]   --> src/main.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut config_file_path = PathBuf::from_str(env::var("XDG_CONFIG_HOME")?.as_str())?;
[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:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut config_file_path = PathBuf::from_str(env::var("XDG_CONFIG_HOME")?.as_str())?;
[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:139:24
[INFO] [stdout]     |
[INFO] [stdout] 139 |             let path = PathBuf::from_str(path).ok()?;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fp-rs` (bin "fp-rs") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "9d38643e61958db57839f7180579f872225a4bffd4f0a1420feac430d11429e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d38643e61958db57839f7180579f872225a4bffd4f0a1420feac430d11429e4", kill_on_drop: false }`
[INFO] [stdout] 9d38643e61958db57839f7180579f872225a4bffd4f0a1420feac430d11429e4
