[INFO] fetching crate rfdups 0.0.1...
[INFO] checking rfdups-0.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rfdups 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rfdups 0.0.1
[INFO] finished tweaking crates.io crate rfdups 0.0.1
[INFO] tweaked toml for crates.io crate rfdups 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rfdups 0.0.1 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 rfdups 0.0.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 423a0e0039ea09781f5c032688f9695e84a63a00202389f5fabd1cc374d63707
[INFO] running `Command { std: "docker" "start" "-a" "423a0e0039ea09781f5c032688f9695e84a63a00202389f5fabd1cc374d63707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "423a0e0039ea09781f5c032688f9695e84a63a00202389f5fabd1cc374d63707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "423a0e0039ea09781f5c032688f9695e84a63a00202389f5fabd1cc374d63707", kill_on_drop: false }`
[INFO] [stdout] 423a0e0039ea09781f5c032688f9695e84a63a00202389f5fabd1cc374d63707
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2ed943a5f6fa5e6670aa6b0cb1e0e715da1dc50abc6236d55a28d02e5bb96bf9
[INFO] running `Command { std: "docker" "start" "-a" "2ed943a5f6fa5e6670aa6b0cb1e0e715da1dc50abc6236d55a28d02e5bb96bf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking crossterm v0.23.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking rfdups v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     #[clap(min_values = 1, multiple_values = true, required = true)]
[INFO] [stdout] 24 | |     pub dirs: Vec<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rfdups` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     #[clap(min_values = 1, multiple_values = true, required = true)]
[INFO] [stdout] 24 | |     pub dirs: Vec<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rfdups` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2ed943a5f6fa5e6670aa6b0cb1e0e715da1dc50abc6236d55a28d02e5bb96bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed943a5f6fa5e6670aa6b0cb1e0e715da1dc50abc6236d55a28d02e5bb96bf9", kill_on_drop: false }`
[INFO] [stdout] 2ed943a5f6fa5e6670aa6b0cb1e0e715da1dc50abc6236d55a28d02e5bb96bf9
