[INFO] fetching crate ron 0.11.0...
[INFO] checking ron-0.11.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ron 0.11.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ron 0.11.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ron 0.11.0
[INFO] tweaked toml for crates.io crate ron 0.11.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ron 0.11.0 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 ron 0.11.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 50fdaddd36ccf0b00b2c978768313c5b4f59d336371bfd5cdd0ea6e31631b319
[INFO] running `Command { std: "docker" "start" "-a" "50fdaddd36ccf0b00b2c978768313c5b4f59d336371bfd5cdd0ea6e31631b319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50fdaddd36ccf0b00b2c978768313c5b4f59d336371bfd5cdd0ea6e31631b319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50fdaddd36ccf0b00b2c978768313c5b4f59d336371bfd5cdd0ea6e31631b319", kill_on_drop: false }`
[INFO] [stdout] 50fdaddd36ccf0b00b2c978768313c5b4f59d336371bfd5cdd0ea6e31631b319
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4eaa726ad732febf05f5b3ad1764a7a8fed7653182d6e6cdadbedcbb7086c44a
[INFO] running `Command { std: "docker" "start" "-a" "4eaa726ad732febf05f5b3ad1764a7a8fed7653182d6e6cdadbedcbb7086c44a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]     Checking inventory v0.3.21
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling typetag-impl v0.2.20
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking bitflags v2.9.3
[INFO] [stderr]     Checking erased-serde v0.4.6
[INFO] [stderr]     Checking option_set v0.3.0
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking serde_bytes v0.11.17
[INFO] [stderr]     Checking ron v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking typetag v0.2.20
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> examples/file_read_write_vec.rs:119:16
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let path = PathBuf::from_str("vec-example.ron").unwrap();
[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 `ron` (example "file_read_write_vec") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4eaa726ad732febf05f5b3ad1764a7a8fed7653182d6e6cdadbedcbb7086c44a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eaa726ad732febf05f5b3ad1764a7a8fed7653182d6e6cdadbedcbb7086c44a", kill_on_drop: false }`
[INFO] [stdout] 4eaa726ad732febf05f5b3ad1764a7a8fed7653182d6e6cdadbedcbb7086c44a