[INFO] fetching crate argopt 0.3.0...
[INFO] checking argopt-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate argopt 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate argopt 0.3.0
[INFO] finished tweaking crates.io crate argopt 0.3.0
[INFO] tweaked toml for crates.io crate argopt 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate argopt 0.3.0 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 argopt 0.3.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 922e16890a6fe56074e427b45886f2a68d2138ded1c0529364ecf8cc78c0f2cf
[INFO] running `Command { std: "docker" "start" "-a" "922e16890a6fe56074e427b45886f2a68d2138ded1c0529364ecf8cc78c0f2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "922e16890a6fe56074e427b45886f2a68d2138ded1c0529364ecf8cc78c0f2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "922e16890a6fe56074e427b45886f2a68d2138ded1c0529364ecf8cc78c0f2cf", kill_on_drop: false }`
[INFO] [stdout] 922e16890a6fe56074e427b45886f2a68d2138ded1c0529364ecf8cc78c0f2cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2459898bcfb39363ae2bbdf721652a3287a5d3abea1928ee36c5a11d1c4a34fb
[INFO] running `Command { std: "docker" "start" "-a" "2459898bcfb39363ae2bbdf721652a3287a5d3abea1928ee36c5a11d1c4a34fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling clap_derive v3.0.14
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]    Compiling darling v0.13.1
[INFO] [stderr]    Compiling argopt-impl v0.3.0
[INFO] [stderr]     Checking argopt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/attr.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Name of the person to greet
[INFO] [stdout] 12 | |     #[opt(short, long)]
[INFO] [stdout] 13 | |     name: 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 `argopt` (example "attr") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]   --> examples/structopt-example.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// Output file
[INFO] [stdout] 24 | |     #[opt(short, long)]
[INFO] [stdout] 25 | |     output: PathBuf,
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/structopt-example.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | /     /// admin_level to consider
[INFO] [stdout] 34 | |     #[opt(short, long)]
[INFO] [stdout] 35 | |     level: Vec<String>,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]   --> examples/structopt-example.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | /     /// Files to process
[INFO] [stdout] 38 | |     #[opt(name = "FILE")]
[INFO] [stdout] 39 | |     files: Vec<PathBuf>,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argopt` (example "structopt-example") due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> examples/subcmd.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | /     /// greeting message
[INFO] [stdout] 7 | |     #[opt(short, long, default_value = "Hello")]
[INFO] [stdout] 8 | |     greet: String,
[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<String, Infallible>
[INFO] [stdout]   --> examples/subcmd.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Your name
[INFO] [stdout] 13 | |     #[opt(name = "NAME")]
[INFO] [stdout] 14 | |     name: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/subcmd.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     /// host name
[INFO] [stdout] 29 | |     #[opt(long, default_value = "localhost")]
[INFO] [stdout] 30 | |     host: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/subcmd.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 | /         /// output filename
[INFO] [stdout] 46 | |         #[opt(short, long, default_value = "stdout")]
[INFO] [stdout] 47 | |         output: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/subcmd.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         /// input filename
[INFO] [stdout] 49 | |         #[opt(short = 'c', default_value = "stdin")]
[INFO] [stdout] 50 | |         input: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::path::PathBuf, Infallible>
[INFO] [stdout]   --> examples/subcmd.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 | /         /// library directory
[INFO] [stdout] 52 | |         #[opt(short = 'L', long)]
[INFO] [stdout] 53 | |         libdir: PathBuf,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argopt` (example "subcmd") due to 6 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> examples/simple.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | /     /// greeting message
[INFO] [stdout] 5 | |     #[opt(short, long, default_value = "Hello")]
[INFO] [stdout] 6 | |     message: String,
[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<String, Infallible>
[INFO] [stdout]  --> examples/simple.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | /     /// your name
[INFO] [stdout] 8 | |     name: String,
[INFO] [stdout]   | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argopt` (example "simple") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2459898bcfb39363ae2bbdf721652a3287a5d3abea1928ee36c5a11d1c4a34fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2459898bcfb39363ae2bbdf721652a3287a5d3abea1928ee36c5a11d1c4a34fb", kill_on_drop: false }`
[INFO] [stdout] 2459898bcfb39363ae2bbdf721652a3287a5d3abea1928ee36c5a11d1c4a34fb
