[INFO] fetching crate kurisu 0.1.6...
[INFO] checking kurisu-0.1.6 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate kurisu 0.1.6 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate kurisu 0.1.6
[INFO] finished tweaking crates.io crate kurisu 0.1.6
[INFO] tweaked toml for crates.io crate kurisu 0.1.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kurisu 0.1.6 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 52 packages to latest compatible versions
[INFO] [stderr]       Adding float-cmp v0.9.0 (available: v0.10.0)
[INFO] [stderr]       Adding textwrap v0.12.1 (available: v0.16.2)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.9.8)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4ded1a8fd7069e3307d204304795acb7db425d7378ccf8648bf7853f360ca8d4
[INFO] running `Command { std: "docker" "start" "-a" "4ded1a8fd7069e3307d204304795acb7db425d7378ccf8648bf7853f360ca8d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ded1a8fd7069e3307d204304795acb7db425d7378ccf8648bf7853f360ca8d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ded1a8fd7069e3307d204304795acb7db425d7378ccf8648bf7853f360ca8d4", kill_on_drop: false }`
[INFO] [stdout] 4ded1a8fd7069e3307d204304795acb7db425d7378ccf8648bf7853f360ca8d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3fb1962491502ad93951ead4ce9d3b388912dfa785ca22ff7be4c988a46e18d3
[INFO] running `Command { std: "docker" "start" "-a" "3fb1962491502ad93951ead4ce9d3b388912dfa785ca22ff7be4c988a46e18d3", kill_on_drop: false }`
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]    Compiling kurisu-derive v0.1.6
[INFO] [stderr]     Checking kurisu v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:168:32
[INFO] [stdout]     |
[INFO] [stdout] 168 |     assert_eq!(yargs.path_buf, PathBuf::from_str("").unwrap());
[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]    --> tests/struct_args.rs:235:32
[INFO] [stdout]     |
[INFO] [stdout] 235 |     assert_eq!(yargs.path_buf, PathBuf::from_str("/dir/file.txt").unwrap());
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:249:28
[INFO] [stdout]     |
[INFO] [stdout] 249 |     assert_eq!(yargs.file, PathBuf::from_str("/dir/file.txt").unwrap());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 |             PathBuf::from_str("/dir1/file1.txt").unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:318:13
[INFO] [stdout]     |
[INFO] [stdout] 318 |             PathBuf::from_str("/dir2/file2.txt").unwrap()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:353:13
[INFO] [stdout]     |
[INFO] [stdout] 353 |             PathBuf::from_str("/dir1/file1.txt").unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:354:13
[INFO] [stdout]     |
[INFO] [stdout] 354 |             PathBuf::from_str("/dir1/file2.txt").unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:355:13
[INFO] [stdout]     |
[INFO] [stdout] 355 |             PathBuf::from_str("/dir1/file3.txt").unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> tests/struct_args.rs:356:13
[INFO] [stdout]     |
[INFO] [stdout] 356 |             PathBuf::from_str("/dir1/file4.txt").unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kurisu` (test "struct_args") due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "3fb1962491502ad93951ead4ce9d3b388912dfa785ca22ff7be4c988a46e18d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb1962491502ad93951ead4ce9d3b388912dfa785ca22ff7be4c988a46e18d3", kill_on_drop: false }`
[INFO] [stdout] 3fb1962491502ad93951ead4ce9d3b388912dfa785ca22ff7be4c988a46e18d3